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2004 Pacific hurricane season

The 2004 Pacific hurricane season was an overall below-average Pacific hurricane season in which there were 12 named tropical storms, all of which formed in the eastern Pacific basin (east of 140°W and north of the equator). Of these, 6 became hurricanes, and 3 of those intensified into major hurricanes. No storms made landfall in 2004, the first such occurrence since 1991. In addition to the season's 12 named storms, there were five tropical depressions that did not reach tropical storm status. One of them, Sixteen-E, made landfall in northwestern Sinaloa. The season officially began on May 15 in the eastern Pacific, and on June 1 in the central Pacific basin (between140°W and the International Date Line, north of the equator). It officially ended in both basins on November 30. These dates conventionally delimit the period during each year when most tropical cyclones form in each respective basin.[1] These dates conventionally delimit the period during each year when a majority of tropical cyclones form. The season was reflected by an accumulated cyclone energy (ACE) index of 71 units.

2004 Pacific hurricane season
Season summary map
Seasonal boundaries
First system formedMay 22, 2004
Last system dissipatedOctober 26, 2004
Strongest storm
NameJavier
 • Maximum winds150 mph (240 km/h)
(1-minute sustained)
 • Lowest pressure930 mbar (hPa; 27.46 inHg)
Seasonal statistics
Total depressions17, 1 unofficial
Total storms12
Hurricanes6
Major hurricanes
(Cat. 3+)
3
Total fatalitiesNone, 3 missing
Total damageNone
Related articles
Pacific hurricane seasons
2002, 2003, 2004, 2005, 2006

Impact throughout the season was minimal and no deaths were recorded. In early August, the remnants of Hurricane Darby contributed to localized heavy rainfall in Hawaii, causing minor street and stream flooding; coffee and macadamia trees were damaged as well. In early September, Hurricane Howard resulted in significant flooding across the Baja California peninsula that damaged agricultural land and 393 homes. Large swells also resulted in about 1,000 lifeguard rescues in California. In mid-September, Javier, the strongest hurricane of the season, caused three fishermen to go missing and helped alleviate a multi-year drought across the Southwest United States. It produced record rainfall in the state of Wyoming. In mid- to late October, Tropical Storm Lester and Tropical Depression Sixteen-E each dumped heavy rain upon parts of Mexico, resulting in minor flood and mudslide damage.

Seasonal forecasts edit

Predictions of tropical activity in the 2004 season
Source Date Named
storms
Hurricanes Major
hurricanes
Ref
Average (1966–2003) 16 9 3
Record high activity 27 16 (tie) 11
Record low activity 8 (tie) 3 0(tie)

SMN January 2004 15 6 3 [2]
SMN May 17, 2004 14 7 2 [3]
NOAA May 21, 2004 13–15 6-8 2-4 [4]
SMN August 2004 13 6 3 [5]

Actual activity
12 6 3

In January 2004, the Servicio Meteorológico Nacional (SMN) released their first prediction for tropical cyclone activity throughout the Northeast Pacific. Based on a Neutral El Niño Southern Oscillation (ENSO), a total of 15 named storms, 6 hurricanes, and 3 major hurricanes was forecast.[2] These values were slightly altered in May to 14 named storms, 7 hurricanes, and 2 major hurricanes,[3] and again in August to 13 named storms, 6 hurricanes, and 3 major hurricanes.[5]

On May 17, the National Oceanic and Atmospheric Administration issued its seasonal forecast for the 2004 central Pacific season, predicting four or five tropical cyclones to form or cross into the basin. Likewise to the SMN, near average activity was expected largely as a result of a Neutral ENSO.[6] The organization issued its experimental eastern Pacific outlook on May 21, highlighting a 45 percent change of below-average activity, 45 percent chance of near-average activity, and only a 10 percent chance of above-average activity in the basin. A total of 13 to 15 named storms, 6 to 8 hurricanes, and 2 to 4 major hurricanes was forecast.[4]

Seasonal summary edit

Tropical Depression Sixteen-E (2004)Tropical Storm Lester (2004)Hurricane Javier (2004)Hurricane Howard (2004)Hurricane Darby (2004)Saffir–Simpson hurricane wind scale
Least intense Pacific hurricane seasons[7]
Rank Season ACE value
1 1977 22.3
2 2010 51.2
3 2007 51.6
4 1996 53.9
5 2003 56.6
6 1979 57.4
7 2004 71.1
8 1981 72.8
9 2013 74.8
10 2020 77.3

Activity was below average throughout the season. Altogether there were 12 named storms, 6 of which became hurricanes, and 3 of those intensified into major hurricanes, compared to the long-term average of 16 named storms, 9 hurricanes, and 3 major hurricanes.[8]

The season's first storm, Agatha, developed on May 22.[9] No tropical cyclones developed during June, below the average of 2 named storms and 1 hurricane, and also the first time since 1969 that the month was cyclone-free.[10] The first hurricane of the season was Celia, which briefly reached Category 1 strength on July 22.[11] It was soon followed by Darby, the first major Hurricane of the season and the first in the Eastern Pacific since Kenna in 2002.[12] Later, on September 14, Javier attained sustained winds of 150 mph (240 km/h), making it the strongest hurricane of the season.[13]

Overall wind energy output was reflected with an ACE index value of 71 units for the season.[14] Although vertical wind shear was near average and ocean temperatures were slightly warmer than average south of Mexico, anomalously cool waters and drier than average air mass existed in the central portions of the eastern Pacific. Anomalously strong mid-level ridging extending from the Atlantic to northern Mexico steered a majority of the season's cyclones toward this inhospitable region and also acted to steer all the system of tropical storm intensity or stronger away from land.[15]

Systems edit

Tropical Storm Agatha edit

Tropical storm (SSHWS)
   
DurationMay 22 – May 24
Peak intensity60 mph (95 km/h) (1-min);
997 mbar (hPa)

A nearly stationary trough stretched from the eastern Pacific into the eastern Caribbean Sea during mid-May. An ill-defined tropical wave crossed Central America on May 17 and interacted with the trough, eventually leading to the formation of a tropical depression at 00:00 UTC on May 22. The newly formed cyclone moved northwest parallel to the coastline of Mexico while steadily organizing in a low wind shear regime, intensifying into Tropical Storm Agatha by 12:00 UTC that day and attaining peak winds of 60 mph (97 km/h) twelve hours later. Increasingly cool ocean temperatures and a drier air mass caused Agatha to weaken quickly thereafter, and it degenerated into a remnant low by 12:00 UTC on May 24. The post-tropical cyclone drifted aimlessly before dissipating well south of the Baja California Peninsula on May 26.[9]

Tropical Depression Two-E edit

Tropical depression (SSHWS)
   
DurationJuly 2 – July 3
Peak intensity35 mph (55 km/h) (1-min);
1007 mbar (hPa)

A westward-moving tropical wave from Africa crossed Central America into the eastern Pacific in late June, coalescing into a tropical depression at 12:00 UTC on July 2 well southwest of the southern tip of the Baja California Peninsula.[16] Steered westward by low-level flow, the depression failed to organize amid wind shear and cooler sea surface temperatures,[17] instead degenerating into a remnant low at 00:00 UTC on July 4. The post-tropical cyclone dissipated a day later.[16]

Tropical Depression One-C edit

Tropical depression (SSHWS)
   
DurationJuly 5 – July 5
Peak intensity30 mph (45 km/h) (1-min);
1007 mbar (hPa)

An organized region of convection within the Intertropical Convergence Zone developed into a tropical depression at 03:00 UTC on July 5 while located roughly 700 mi (1,100 km) south-southeast of Johnston Atoll, becoming the farthest-south-forming central Pacific tropical cyclone since Tropical Storm Hali (1992). Steered westward, the depression failed to intensify due to its quick forward motion despite a seemingly favorable environment, and it quickly dissipated at 00:00 UTC on July 6.[18]

Tropical Storm Blas edit

Tropical storm (SSHWS)
   
DurationJuly 12 – July 15
Peak intensity65 mph (100 km/h) (1-min);
991 mbar (hPa)

A tropical wave crossed Central America on July 8, developing into a tropical depression at 12:00 UTC on July 12 while located about 335 mi (539 km) southwest of Zihuatanejo, Mexico; six hours later, the depression intensified into Tropical Storm Blas. Steered swiftly northwestward around a mid-level ridge over the southwestern United States, the cyclone steadily intensified and reached peak winds of 65 mph (105 km/h) early on July 13 as a large and robust convective canopy became evident. Blas began a steady weakening trend as it tracked over increasingly cool sea surface temperatures, weakening to a tropical depression at 18:00 UTC on July 14 and degenerating into a large remnant low twelve hours later. The post-tropical cyclone decelerated and curved northeastward, dissipating well west of central Baja California early on July 19.[19]

Hurricane Celia edit

Category 1 hurricane (SSHWS)
   
DurationJuly 19 – July 25
Peak intensity85 mph (140 km/h) (1-min);
981 mbar (hPa)

A vigorous tropical wave entered the East Pacific on July 13, acquiring sufficient organization to be declared a tropical depression at 00:00 UTC on July 19 while located about 620 mi (1,000 km) south-southwest of the southern tip of the Baja California Peninsula. Directed west-northwest around a subtropical ridge, the cyclone steadily intensified amongst a favorable environment, becoming Tropical Storm Celia at 12:00 UTC that same day and further strengthening into a Category 1 hurricane on the Saffir–Simpson hurricane wind scale, the season's first, at 00:00 UTC on July 22. After attaining peak winds of 85 mph (137 km/h) six hours later, an increasingly unfavorable environment began to hinder the system. Celia weakened to a tropical storm at 18:00 UTC on July 22 and eventually degenerated into a remnant low at 00:00 UTC on July 26. The post-tropical cyclone dissipated about 1,740 mi (2,800 km) west-southwest of the southern tip of the Baja California Peninsula later that morning.[20]

Hurricane Darby edit

Category 3 hurricane (SSHWS)
   
DurationJuly 26 – August 1
Peak intensity120 mph (195 km/h) (1-min);
957 mbar (hPa)

A tropical depression formed at 12:00 UTC on July 26 while positioned about 760 mi (1,220 km) south-southwest of Cabo San Lucas, Mexico from a tropical wave that entered the eastern Pacific nearly a week prior. The system quickly intensified as it curved west-northwest around a subtropical ridge, becoming Tropical Storm Darby at 00:00 UTC on July 27 and strengthening into a Category 1 hurricane early the next day. After attaining its peak as the season's first major hurricane with winds of 120 mph (190 km/h), increasing wind shear and cooler sea surface temperatures begin to weaken the cyclone. It weakened to a tropical storm at 12:00 UTC on July 30 and further to a tropical depression a day later as it entered the jurisdiction of the Central Pacific Hurricane Center.[12] At 12:00 UTC on August 1, Darby dissipated about 850 mi (1,370 km) east of the Hawaiian Islands.[18]

Although Darby produced no impacts to land as a tropical cyclone, its remnant moisture field combined with an upper-level trough over Hawaii to produce an unstable atmosphere. General rainfall amounts of 2–5 in (51–127 mm) were recorded across the Big Island and Oahu, with a localized peak of 9.04 in (230 mm) in Kaneohe; this led to flooding and several road closures. Minor stream flooding was observed on the southeast flank of Mount Haleakalā. A rainfall total of 3.06 in (78 mm) was recorded at the Honolulu International Airport, contributing to the wettest August on record in the city.[21] Some coffee and macadamia nut trees were damaged.[22]

Tropical Depression Six-E edit

Tropical depression (SSHWS)
   
DurationAugust 1 – August 2
Peak intensity30 mph (45 km/h) (1-min);
1008 mbar (hPa)

Operationally, an area of disturbed weather was thought to have coalesced into a tropical depression at 09:00 UTC on July 29 while located well southwest of the Baja California Peninsula. The depression was only expected to intensify slightly before entering cooler waters and interacting with outflow from nearby Hurricane Darby.[23] By late that evening, however, its presentation on satellite imagery more resembled a trough, and the NHC discontinued advisories.[24] In post-season analysis, the organization determined that the depression did not form until 06:00 UTC on August 1 and lasted but 24 hours.[25]

Tropical Storm Estelle edit

Tropical storm (SSHWS)
   
DurationAugust 19 – August 24
Peak intensity70 mph (110 km/h) (1-min);
989 mbar (hPa)

A tropical wave interacted with a disturbance embedded in the ITCZ in mid-August, leading to the designation of a tropical depression at 06:00 UTC on August 19 while located 1,440 mi (2,320 km) east-southeast of Hilo, Hawaii. The cyclone moved west-northwest following formation, steered around a subtropical ridge. It intensified into Tropical Storm Estelle at 06:00 UTC on August 20 and attained peak winds of 70 mph (110 km/h) at 12:00 UTC the next morning as it crossed into the central Pacific.[26] Thereafter, increasing wind shear caused Estelle to a steady weakening trend. At 00:00 UTC on August 23, the cyclone decelerated to a tropical depression while turning west-southwest, and at 18:00 UTC the following day, it further degenerated into a remnant low. The post-tropical cyclone continued on a west-southwest trajectory prior to dissipating south-southeast of the Big Island at 00:00 UTC on August 26.[18]

Hurricane Frank edit

Category 1 hurricane (SSHWS)
   
DurationAugust 23 – August 26
Peak intensity85 mph (140 km/h) (1-min);
979 mbar (hPa)

A tropical wave, the remnants of Tropical Storm Earl in the Atlantic, crossed into the eastern Pacific in mid-August and steadily organized to become a tropical depression at 06:00 UTC on August 23 well south of the coastline of Mexico. The depression intensified into Tropical Storm Frank six hours later as banding features and central convection increased. Steered northwest within a favorable environment, the cyclone rapidly intensified into a Category 1 hurricane by 18:00 UTC and ultimately attained peak winds of 85 mph (137 km/h) twelve hours later. Frank steadily weakened thereafter as it entered cooler ocean temperatures, degenerating into a remnant low at 06:00 UTC on August 26. The remnant low drifted southwest before diffusing into a trough well south of the Baja California Peninsula the following day.[27]

Tropical Depression Nine-E edit

Tropical depression (SSHWS)
   
DurationAugust 23 – August 26
Peak intensity35 mph (55 km/h) (1-min);
1005 mbar (hPa)

A tropical wave crossed Central America on August 15, only slowing organizing into a tropical depression at 18:00 UTC on August 23 while located about 920 mi (1,480 km) west-southwest of Cabo San Lucas, Mexico. Steered north-northwest and eventually west, the cyclone failed to intensify further into a tropical storm amid cool sea surface temperatures and southerly wind shear, and it instead degenerated into a remnant low at 18:00 UTC on August 26. The post-tropical cyclone turned west-southwest before dissipating about 1,095 mi (1,762 km) east of Hilo, Hawaii early on August 28.[28]

Tropical Storm Georgette edit

Tropical storm (SSHWS)
   
DurationAugust 26 – August 30
Peak intensity65 mph (100 km/h) (1-min);
995 mbar (hPa)

A westward-moving tropical wave entered the eastern Pacific in late August, acquiring sufficient organization to be declared a tropical depression at 12:00 UTC on August 26 about 605 miles (974 km) south-southeast of the Baja California Peninsula. The depression intensified into Tropical Storm Georgette six hours later as its satellite presentation improved, and it reached peak winds of 65 mph (105 km/h) at 12:00 UTC on August 27. Increasingly hostile upper-level winds began to impinge on the west-northwest-moving tropical cyclone shortly thereafter, ultimately causing it to degenerate into a remnant low by 18:00 UTC on August 30. The post-tropical cyclone continued its forward course until dissipating early on September 3.[29]

Hurricane Howard edit

Category 4 hurricane (SSHWS)
   
DurationAugust 30 – September 5
Peak intensity140 mph (220 km/h) (1-min);
943 mbar (hPa)

A westward-moving tropical wave from Africa entered the eastern Pacific in late August, organizing into a tropical depression at 12:00 UTC on August 30 south of the coastline of Mexico. The depression intensified into Tropical Storm Howard twelve hours later and further developed into a hurricane at 06:00 UTC on September 1. On its northwest track, a favorable environment regime prompted the cyclone to begin a period of rapid intensification, and it attained its peak as a Category 4 hurricane with winds of 140 mph (230 km/h) at 12:00 UTC on September 2. Cooler ocean temperatures led to a steady weakening trend thereafter, and Howard degenerated into a remnant low at 18:00 UTC on September 5. The low turned southwest before dissipating over open waters on September 10.[30]

Although the storm remained offshore, the outer bands of the storm produced significant flooding across the Baja California peninsula,[31] which damaged agricultural land and at least 393 homes.[32] Swells reached 18 ft (5.5 m) along the Baja California coastline and 12 ft (3.7 m) along the California coastline; about 1,000 lifeguard rescues took place in California due to the waves.[33][34] Moisture from the storm enhanced rainfall in parts of Arizona, leading to minor accumulations.[35]

Hurricane Isis edit

Category 1 hurricane (SSHWS)
   
DurationSeptember 8 – September 16
Peak intensity75 mph (120 km/h) (1-min);
987 mbar (hPa)

A tropical wave, possibly responsible for the formation of Hurricane Frances in the Atlantic, entered the eastern Pacific in early September, gaining sufficient organization to be declared a tropical depression at 06:00 UTC on September 8 about 530 miles (850 km) south of Cabo San Lucas, Mexico. The system tracked west, intensifying into Tropical Storm Isis twelve hours after being designated, but weakening back to a tropical depression early on September 10, amid persistent wind shear. Upper-level winds decreased by September 12, allowing Isis to regain tropical storm intensity by 00:00 UTC, and eventually peak as a Category 1 hurricane with winds of 75 mph (121 km/h), at 12:00 UTC on September 15. After conducting a clockwise loop, the hurricane entered cooler waters and began to weaken; it degenerated into a remnant low at 18:00 UTC on the next day. The low drifted southwest and then west, before dissipating well east of Hawaii on September 21.[36]

Hurricane Javier edit

Category 4 hurricane (SSHWS)
   
DurationSeptember 10 – September 19
Peak intensity150 mph (240 km/h) (1-min);
930 mbar (hPa)

A tropical wave entered the eastern Pacific in early September, organizing into a tropical depression at 18:00 UTC on September 10 south of the Gulf of Tehuantepec. Under light shear, the depression intensified into Tropical Storm Javier at 12:00 UTC the next morning and into a hurricane at 18:00 UTC on September 12. The cyclone soon began a period of rapid intensification as it alternated on a west-northwest to northwest course, ultimately peaking as a Category 4 hurricane with winds of 150 mph (240 km/h) at 00:00 UTC on September 14 as a distinct pinhole eye became evident on satellite imagery. Cooler waters, strong southwesterly shear, and an eyewall replacement cycle all weakened Javier thereafter; it fell to tropical depression intensity early on September 19 before crossing Baja California and degenerated into a remnant low at 18:00 UTC that day over the Gulf of California. The low crossed the state of Sonora before dissipating over mountainous terrain on September 20.[13]

As a tropical cyclone, Javier produced moderate rainfall peaking at 3.14 in (80 mm) in Bacanuchi, Mexico.[37] Three fishermen went missing offshore the coastline due to high surf.[38] As a post-tropical cyclone, the storm's remnant moisture overspread the Southwest United States, alleviating a multi-year drought.[39] Accumulations peaked at 7 in (180 mm) in Walnut Creek, Arizona, with lighter totals across the Four Corners and upper Midwest.[40] The remnants of Javier produced 2 in (51 mm) of rain in Wyoming, cementing its status as the wettest tropical cyclone in the reliable record there.[41]

Tropical Storm Kay edit

Tropical storm (SSHWS)
   
DurationOctober 4 – October 6
Peak intensity45 mph (75 km/h) (1-min);
1004 mbar (hPa)

An area of disturbed weather developed within the ITCZ well southwest of mainland Mexico, coalescing into a tropical depression at 18:00 UTC on October 4. The depression strengthened into Tropical Storm Kay twelve hours later, and it attained peak winds of 45 mph (72 km/h) at 12:00 UTC the next morning as suggested by satellite intensity estimates. Moderate northerly shear caused core convection to decrease as the system moved west-northwest, resulting in Kay degenerating into a remnant low at 12:00 UTC on October 6 over open ocean. The low-level swirl curved southwestward and dissipated the next day.[42]

Tropical Storm Lester edit

Tropical storm (SSHWS)
   
DurationOctober 11 – October 13
Peak intensity50 mph (85 km/h) (1-min);
1000 mbar (hPa)

An area of disturbed weather south of the Gulf of Tehuantepec organized into a tropical depression at 18:00 UTC on October 11. Steered northwest to west-northwest by a mid-level ridge to its north and a broad cyclonic circulation to its southwest, the depression intensified into Tropical Storm Lester at 18:00 UTC the next day. The system was initially forecast to become a hurricane amid light shear; however, interaction with the coastline of Mexico and the nearby cyclonic circulation instead caused Lester to weaken. Observations from a reconnaissance aircraft indicated the storm degenerated into a trough at 18:00 UTC on October 13.[43]

As the cyclone paralleled the coastline of Mexico, a tropical storm warning was hoisted from Punta Maldonado, Guerrero, to Lázaro Cárdenas, Michoacán. Rainfall accumulations of 3–5 in (76–127 mm) were observed across Oaxaca and Guerrero, leading to localized flooding.[43]

Tropical Depression Sixteen-E edit

Tropical depression (SSHWS)
   
DurationOctober 25 – October 26
Peak intensity35 mph (55 km/h) (1-min);
1004 mbar (hPa)

A tropical wave entered the eastern Pacific in mid-October, interacting with two previous tropical waves that resulted in a large area of disturbed weather. The system organized into a tropical depression at 00:00 UTC on October 25 about 315 miles (507 km) south-southeast of the Baja California Peninsula. Initially, the cyclone was characterized by a large area of deep convection enhanced from an upper-level trough. This same trough soon imparted strong wind shear, preventing intensification. The depression moved into Sinaloa early that same day and dissipated over the Sierra Madre Occidental at 18:00 UTC on October 26.[44]

The depression produced locally heavy rainfall across western Mexico, resulting in some localized flooding.[44] Culiacán International Airport recorded a peak wind gust of 80 mph (130 km/h), suggesting a tornado may have occurred nearby.[45] The remnant mid-level circulation associated with the cyclone interacted with a frontal system to produce strong thunderstorms across the southern Great Plains.[44]

Other system edit

On August 14, the Japan Meteorological Agency had stated that Tropical Storm Malakas had briefly exited the West Pacific basin and entered the Central Pacific basin, as a weakening tropical depression.[46]

Storm names edit

The following list of names was used for named storms that formed in the North Pacific east of 140°W in 2004.[47] This is the same list used for the 1998 season.[48] No names were retired from this list by the World Meteorological Organization following the season, and it was used again for the 2010 season.[49]

  • Agatha
  • Blas
  • Celia
  • Darby*
  • Estelle*
  • Frank
  • Georgette
  • Howard
  • Isis
  • Javier
  • Kay
  • Lester
  • Madeline (unused)
  • Newton (unused)
  • Orlene (unused)
  • Paine (unused)
  • Roslyn (unused)
  • Seymour (unused)
  • Tina (unused)
  • Virgil (unused)
  • Winifred (unused)
  • Xavier (unused)
  • Yolanda (unused)
  • Zeke (unused)

For storms that form in the North Pacific between 140°W and the International Date Line, the names come from a series of four rotating lists. Names are used one after the other without regard to year, and when the bottom of one list is reached, the next named storm receives the name at the top of the next list.[47] No named storms formed within the region in 2004. Named storms in the table above that crossed into the area during the year are noted (*).[18]

Season effects edit

This is a table of all of the storms that formed in the 2004 Pacific hurricane season. It includes their name, duration, peak classification and intensities, areas affected, damage, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a wave, or a low, and all of the damage figures are in 2004 USD.

Saffir–Simpson scale
TD TS C1 C2 C3 C4 C5
2004 Pacific hurricane season statistics
Storm
name
Dates active Storm category
at peak intensity
Max 1-min
wind
mph (km/h)
Min.
press.
(mbar)
Areas affected Damage
(USD)
Deaths Ref(s)
Agatha May 22–24 Tropical storm 60 (95) 997 Revillagigedo Islands, Clarion Island, Southwestern Mexico None None
Two-E July 2–3 Tropical depression 35 (55) 1007 None None None
One-C July 5 Tropical depression 30 (45) 1007 None None None
Blas July 12–15 Tropical storm 65 (100) 991 Northwestern Mexico, Baja California Peninsula, Southwestern United States None None
Celia July 19–25 Category 1 hurricane 85 (140) 981 None None None
Darby July 26 – August 1 Category 3 hurricane 120 (195) 957 None Minimal None
Six-E August 1–2 Tropical depression 30 (45) 1008 None None None
Estelle August 19–24 Tropical storm 70 (110) 989 None None None
Frank August 23–26 Category 1 hurricane 85 (140) 979 Baja California Peninsula None None
Nine-E August 23–26 Tropical depression 35 (55) 1005 None None None
Georgette August 26–30 Tropical storm 65 (100) 995 None None None
Howard August 30 – September 5 Category 4 hurricane 140 (220) 943 Baja California Peninsula, Western United States, California, Arizona Minimal None
Isis September 8–16 Category 1 hurricane 75 (120) 987 None None None
Javier September 10–19 Category 4 hurricane 150 (240) 930 Baja California Peninsula, Northwestern Mexico, Southwestern United States, Arizona, Texas Minimal 3 missing
Kay October 4–6 Tropical storm 45 (75) 1004 None None None
Lester October 11–13 Tropical storm 50 (85) 1000 Southwestern Mexico None None
Sixteen-E October 25–26 Tropical depression 35 (55) 1004 Baja California Peninsula, Northwestern Mexico, Southwestern United States, Texas, California None None
Season aggregates
17 systems May 22 – October 26   150 (240) 930 Minimal None  

See also edit

References edit

  1. ^ "Frequently Asked Questions". Central Pacific Hurricane Center. May 12, 2016. Retrieved December 31, 2016.
  2. ^ a b (Report) (in Spanish). Servicio Meteorológico Nacional. January 2004. Archived from the original on April 14, 2005. Retrieved December 31, 2016.{{cite report}}: CS1 maint: bot: original URL status unknown (link)
  3. ^ a b (Report) (in Spanish). Servicio Meteorológico Nacional. May 2004. Archived from the original on April 14, 2005. Retrieved December 31, 2016.{{cite report}}: CS1 maint: bot: original URL status unknown (link)
  4. ^ a b (Report). National Oceanic and Atmospheric Administration. May 21, 2004. Archived from the original on 2016-12-09. Retrieved October 16, 2016.
  5. ^ a b (Report) (in Spanish). Servicio Meteorológico Nacional. August 2004. Archived from the original on April 14, 2005. Retrieved December 31, 2016.{{cite report}}: CS1 maint: bot: original URL status unknown (link)
  6. ^ (Report). National Oceanic and Atmospheric Administration. May 17, 2004. Archived from the original on 2016-12-09. Retrieved October 16, 2016.
  7. ^ "Basin Archives: Northeast Pacific Ocean Historical Tropical Cyclone Statistics". Fort Collins, Colorado: Colorado State University. Retrieved July 8, 2022.
  8. ^ Hurricane Specialist Unit (December 1, 2004). Tropical Weather Summary: November (Report). National Hurricane Center. Retrieved October 16, 2016.
  9. ^ a b Lixion A. Avila (June 2, 2004). Tropical Cyclone Report: Tropical Storm Agatha (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  10. ^ Lixion A. Avila; Stacy R. Stewart (July 1, 2004). Tropical Weather Summary: July (Report). National Hurricane Center. Retrieved October 16, 2016.
  11. ^ "Hurricane Celia". Earth Observatory, NASA Goddard Space Flight Center. 23 July 2004. Retrieved August 1, 2022.
  12. ^ a b Jack L. Beven II (December 17, 2004). Tropical Cyclone Report: Hurricane Darby (PDF) (Report). National Hurricane Center. p. 1. Retrieved May 26, 2015.
  13. ^ a b Lixion A. Avila (November 15, 2004). Tropical Cyclone Report: Hurricane Javier (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  14. ^ National Hurricane Center; Hurricane Research Division; Central Pacific Hurricane Center (April 4, 2023). "The Northeast and North Central Pacific hurricane database 1949–2022". United States National Oceanic and Atmospheric Administration's National Weather Service. A guide on how to read the database is available here.   This article incorporates text from this source, which is in the public domain.
  15. ^ Hurricane Specialist Unit (August 2, 2005). "Eastern North Pacific Hurricane Season of 2004". National Hurricane Center. 137 (3). American Meteorological Society: 1026. Bibcode:2006MWRv..134.1026A. doi:10.1175/MWR3095.1.
  16. ^ a b Miles B. Lawrence (July 17, 2004). Tropical Cyclone Report: Tropical Depression Two-E (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  17. ^ Lixion A. Avila (July 2, 2004). "Tropical Depression Two-E Discussion Number 2". National Hurricane Center. Retrieved October 16, 2016.
  18. ^ a b c d Nash, Andy; Craig, Tim; Matsuda, Roy; Powell, Jeffrey (February 2005). 2004 Tropical Cyclones Central North Pacific (PDF) (Report). Honolulu, Hawaii: Central Pacific Hurricane Center. Retrieved January 30, 2024.
  19. ^ Richard J. Pasch (August 5, 2004). Tropical Cyclone Report: Tropical Storm Blas (PDF) (Report). Miami, Florida: National Hurricane Center. pp. 1–3. Retrieved May 26, 2015.
  20. ^ Stacy R. Stewart (October 12, 2004). Tropical Cyclone Report: Hurricane Celia (PDF) (Report). Miami, Florida: National Hurricane Center. pp. 1, 2. Retrieved May 26, 2015.
  21. ^ Excessive Rainfall from the Remnants of Darby (Report). National Weather Service Weather Forecast Office in Honolulu, Hawaii. Retrieved October 16, 2016.
  22. ^ Howard Dicus (August 5, 2004). "Rains flood some farmlands but most manage well". American City Business Journals. Retrieved October 16, 2016.
  23. ^ Stacy R. Stewart. Tropical Depression Six-E Discussion Number 1 (Report). July 29, 2004. Retrieved October 16, 2016.
  24. ^ James L. Franklin. Tropical Depression Six-E Discussion Number 4 (Report). July 29, 2004. Retrieved October 16, 2016.
  25. ^ James L. Franklin; Richard D. Knabb (November 16, 2004). Abbreviated Tropical Cyclone Report: Tropical Depression Six-E (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  26. ^ Lixion A. Avila (November 3, 2004). Tropical Cyclone Report: Tropical Storm Estelle (PDF) (Report). Miami, Florida: National Hurricane Center. pp. 1, 4. Retrieved May 28, 2015.
  27. ^ David P. Roberts; Miles B. Lawrence (November 19, 2004). Tropical Cyclone Report: Hurricane Frank (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  28. ^ Richard J. Pasch (November 12, 2004). Tropical Cyclone Report: Tropical Depression Nine-E (PDF) (Report). Miami, Florida: National Hurricane Center. p. 1. Retrieved June 9, 2015.
  29. ^ Stacy R. Stewart (October 14, 2004). Tropical Cyclone Report: Tropical Storm Georgette (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  30. ^ Jack L. Beven II (December 13, 2004). Tropical Cyclone Report: Hurricane Howard (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  31. ^ Luciano Garcia Valenzuela (September 4, 2004). "Decretan alerta por "Howard"". El Siglo de Durango (in Spanish). Retrieved October 16, 2016.
  32. ^ (in Spanish). Navajoa. September 9, 2004. Archived from the original on July 5, 2007. Retrieved October 16, 2016.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  33. ^ Yi-Wyn Wen (September 13, 2004). "The Perfect Storms". Sports Illustrated Vault. Retrieved October 16, 2016.
  34. ^ Storm Event: California High Surf (Report). National Centers for Environmental Information. 2004. Retrieved October 16, 2016.
  35. ^ Chuck George (September 3, 2004). "Rainy Start To Tucson's Labor Day Weekend". KOLD News. Archived from the original on January 3, 2013. Retrieved October 16, 2016.
  36. ^ James L. Franklin; David P. Roberts (November 17, 2004). Tropical Cyclone Report: Hurricane Isis (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  37. ^ (PDF) (Report) (in Spanish). Servicio Meteorológico Nacional. December 1, 2004. Archived from the original (PDF) on October 18, 2016. Retrieved October 16, 2016.
  38. ^ . Nacion Internacionales. September 15, 2004. Archived from the original on 2016-10-18. Retrieved October 16, 2016.
  39. ^ Weekly Weather and Crop Bulletin (Report). National Agricultural Statistics Service. September 21, 2004. Retrieved October 16, 2016.
  40. ^ David M. Roth. Hurricane Javier – September 18–21, 2004 (Report). Weather Prediction Center. Retrieved October 16, 2016.
  41. ^ David M. Roth. "Maximum Rainfall caused by Tropical Cyclones and their remnants per state (1950–2012)" (GIF). Weather Prediction Center. Retrieved October 16, 2016.
  42. ^ David P. Roberts; Miles B. Lawrence (November 20, 2004). Tropical Cyclone Report: Tropical Storm Kay (PDF) (Report). National Hurricane Center. p. 1. Retrieved October 16, 2016.
  43. ^ a b Richard J. Pasch; David P. Roberts (December 10, 2004). Tropical Cyclone Report: Tropical Storm Lester (PDF) (Report). National Hurricane Center. pp. 1, 2. Retrieved October 16, 2016.
  44. ^ a b c Stacy R. Stewart (November 18, 2004). Tropical Cyclone Report: Tropical Depression Sixteen-E (PDF) (Report). National Hurricane Center. pp. 1–3. Retrieved October 16, 2016.
  45. ^ Hurricane Specialist Unit (November 1, 2004). Tropical Weather Summary: October (Report). National Hurricane Center. Retrieved October 16, 2016.
  46. ^ "Digital Typhoon: List of weather charts on August 14, 2004 (Sat)". Digital Typhoon. Retrieved December 30, 2016.
  47. ^ a b National Hurricane Operations Plan (PDF) (Report). Washington, D.C.: NOAA Office of the Federal Coordinator for Meteorological Services and Supporting Research. May 2004. p. 3-10–11. Retrieved March 5, 2024.
  48. ^ National Hurricane Operations Plan (PDF) (Report). Washington, D.C.: NOAA Office of the Federal Coordinator for Meteorological Services and Supporting Research. May 1998. p. 3-8. Retrieved January 30, 2024.
  49. ^ National Hurricane Operations Plan (PDF) (Report). Washington, D.C.: NOAA Office of the Federal Coordinator for Meteorological Services and Supporting Research. May 2010. p. 3-8. Retrieved January 30, 2024.

External links edit

  • National Hurricane Center's 2004 Pacific hurricane season archive
  • Central Pacific Hurricane Center's 2004 Pacific hurricane season summary

2004, pacific, hurricane, season, been, suggested, that, tropical, storm, lester, 2004, merged, into, this, article, discuss, proposed, since, february, 2024, overall, below, average, pacific, hurricane, season, which, there, were, named, tropical, storms, whi. It has been suggested that Tropical Storm Lester 2004 be merged into this article Discuss Proposed since February 2024 The 2004 Pacific hurricane season was an overall below average Pacific hurricane season in which there were 12 named tropical storms all of which formed in the eastern Pacific basin east of 140 W and north of the equator Of these 6 became hurricanes and 3 of those intensified into major hurricanes No storms made landfall in 2004 the first such occurrence since 1991 In addition to the season s 12 named storms there were five tropical depressions that did not reach tropical storm status One of them Sixteen E made landfall in northwestern Sinaloa The season officially began on May 15 in the eastern Pacific and on June 1 in the central Pacific basin between140 W and the International Date Line north of the equator It officially ended in both basins on November 30 These dates conventionally delimit the period during each year when most tropical cyclones form in each respective basin 1 These dates conventionally delimit the period during each year when a majority of tropical cyclones form The season was reflected by an accumulated cyclone energy ACE index of 71 units 2004 Pacific hurricane seasonSeason summary mapSeasonal boundariesFirst system formedMay 22 2004Last system dissipatedOctober 26 2004Strongest stormNameJavier Maximum winds150 mph 240 km h 1 minute sustained Lowest pressure930 mbar hPa 27 46 inHg Seasonal statisticsTotal depressions17 1 unofficialTotal storms12Hurricanes6Major hurricanes Cat 3 3Total fatalitiesNone 3 missingTotal damageNoneRelated articlesTimeline of the 2004 Pacific hurricane season 2004 Atlantic hurricane season 2004 Pacific typhoon season 2004 North Indian Ocean cyclone seasonPacific hurricane seasons2002 2003 2004 2005 2006 Impact throughout the season was minimal and no deaths were recorded In early August the remnants of Hurricane Darby contributed to localized heavy rainfall in Hawaii causing minor street and stream flooding coffee and macadamia trees were damaged as well In early September Hurricane Howard resulted in significant flooding across the Baja California peninsula that damaged agricultural land and 393 homes Large swells also resulted in about 1 000 lifeguard rescues in California In mid September Javier the strongest hurricane of the season caused three fishermen to go missing and helped alleviate a multi year drought across the Southwest United States It produced record rainfall in the state of Wyoming In mid to late October Tropical Storm Lester and Tropical Depression Sixteen E each dumped heavy rain upon parts of Mexico resulting in minor flood and mudslide damage Contents 1 Seasonal forecasts 2 Seasonal summary 3 Systems 3 1 Tropical Storm Agatha 3 2 Tropical Depression Two E 3 3 Tropical Depression One C 3 4 Tropical Storm Blas 3 5 Hurricane Celia 3 6 Hurricane Darby 3 7 Tropical Depression Six E 3 8 Tropical Storm Estelle 3 9 Hurricane Frank 3 10 Tropical Depression Nine E 3 11 Tropical Storm Georgette 3 12 Hurricane Howard 3 13 Hurricane Isis 3 14 Hurricane Javier 3 15 Tropical Storm Kay 3 16 Tropical Storm Lester 3 17 Tropical Depression Sixteen E 3 18 Other system 4 Storm names 5 Season effects 6 See also 7 References 8 External linksSeasonal forecasts editPredictions of tropical activity in the 2004 season Source Date Namedstorms Hurricanes Majorhurricanes Ref Average 1966 2003 16 9 3 Record high activity 27 16 tie 11 Record low activity 8 tie 3 0 tie SMN January 2004 15 6 3 2 SMN May 17 2004 14 7 2 3 NOAA May 21 2004 13 15 6 8 2 4 4 SMN August 2004 13 6 3 5 Actual activity 12 6 3 In January 2004 the Servicio Meteorologico Nacional SMN released their first prediction for tropical cyclone activity throughout the Northeast Pacific Based on a Neutral El Nino Southern Oscillation ENSO a total of 15 named storms 6 hurricanes and 3 major hurricanes was forecast 2 These values were slightly altered in May to 14 named storms 7 hurricanes and 2 major hurricanes 3 and again in August to 13 named storms 6 hurricanes and 3 major hurricanes 5 On May 17 the National Oceanic and Atmospheric Administration issued its seasonal forecast for the 2004 central Pacific season predicting four or five tropical cyclones to form or cross into the basin Likewise to the SMN near average activity was expected largely as a result of a Neutral ENSO 6 The organization issued its experimental eastern Pacific outlook on May 21 highlighting a 45 percent change of below average activity 45 percent chance of near average activity and only a 10 percent chance of above average activity in the basin A total of 13 to 15 named storms 6 to 8 hurricanes and 2 to 4 major hurricanes was forecast 4 Seasonal summary editLeast intense Pacific hurricane seasons 7 Rank Season ACE value 1 1977 22 3 2 2010 51 2 3 2007 51 6 4 1996 53 9 5 2003 56 6 6 1979 57 4 7 2004 71 1 8 1981 72 8 9 2013 74 8 10 2020 77 3 Activity was below average throughout the season Altogether there were 12 named storms 6 of which became hurricanes and 3 of those intensified into major hurricanes compared to the long term average of 16 named storms 9 hurricanes and 3 major hurricanes 8 The season s first storm Agatha developed on May 22 9 No tropical cyclones developed during June below the average of 2 named storms and 1 hurricane and also the first time since 1969 that the month was cyclone free 10 The first hurricane of the season was Celia which briefly reached Category 1 strength on July 22 11 It was soon followed by Darby the first major Hurricane of the season and the first in the Eastern Pacific since Kenna in 2002 12 Later on September 14 Javier attained sustained winds of 150 mph 240 km h making it the strongest hurricane of the season 13 Overall wind energy output was reflected with an ACE index value of 71 units for the season 14 Although vertical wind shear was near average and ocean temperatures were slightly warmer than average south of Mexico anomalously cool waters and drier than average air mass existed in the central portions of the eastern Pacific Anomalously strong mid level ridging extending from the Atlantic to northern Mexico steered a majority of the season s cyclones toward this inhospitable region and also acted to steer all the system of tropical storm intensity or stronger away from land 15 Systems editTropical Storm Agatha edit Tropical storm SSHWS nbsp nbsp DurationMay 22 May 24Peak intensity60 mph 95 km h 1 min 997 mbar hPa A nearly stationary trough stretched from the eastern Pacific into the eastern Caribbean Sea during mid May An ill defined tropical wave crossed Central America on May 17 and interacted with the trough eventually leading to the formation of a tropical depression at 00 00 UTC on May 22 The newly formed cyclone moved northwest parallel to the coastline of Mexico while steadily organizing in a low wind shear regime intensifying into Tropical Storm Agatha by 12 00 UTC that day and attaining peak winds of 60 mph 97 km h twelve hours later Increasingly cool ocean temperatures and a drier air mass caused Agatha to weaken quickly thereafter and it degenerated into a remnant low by 12 00 UTC on May 24 The post tropical cyclone drifted aimlessly before dissipating well south of the Baja California Peninsula on May 26 9 Tropical Depression Two E edit Tropical depression SSHWS nbsp nbsp DurationJuly 2 July 3Peak intensity35 mph 55 km h 1 min 1007 mbar hPa A westward moving tropical wave from Africa crossed Central America into the eastern Pacific in late June coalescing into a tropical depression at 12 00 UTC on July 2 well southwest of the southern tip of the Baja California Peninsula 16 Steered westward by low level flow the depression failed to organize amid wind shear and cooler sea surface temperatures 17 instead degenerating into a remnant low at 00 00 UTC on July 4 The post tropical cyclone dissipated a day later 16 Tropical Depression One C edit Tropical depression SSHWS nbsp nbsp DurationJuly 5 July 5Peak intensity30 mph 45 km h 1 min 1007 mbar hPa An organized region of convection within the Intertropical Convergence Zone developed into a tropical depression at 03 00 UTC on July 5 while located roughly 700 mi 1 100 km south southeast of Johnston Atoll becoming the farthest south forming central Pacific tropical cyclone since Tropical Storm Hali 1992 Steered westward the depression failed to intensify due to its quick forward motion despite a seemingly favorable environment and it quickly dissipated at 00 00 UTC on July 6 18 Tropical Storm Blas edit Tropical storm SSHWS nbsp nbsp DurationJuly 12 July 15Peak intensity65 mph 100 km h 1 min 991 mbar hPa A tropical wave crossed Central America on July 8 developing into a tropical depression at 12 00 UTC on July 12 while located about 335 mi 539 km southwest of Zihuatanejo Mexico six hours later the depression intensified into Tropical Storm Blas Steered swiftly northwestward around a mid level ridge over the southwestern United States the cyclone steadily intensified and reached peak winds of 65 mph 105 km h early on July 13 as a large and robust convective canopy became evident Blas began a steady weakening trend as it tracked over increasingly cool sea surface temperatures weakening to a tropical depression at 18 00 UTC on July 14 and degenerating into a large remnant low twelve hours later The post tropical cyclone decelerated and curved northeastward dissipating well west of central Baja California early on July 19 19 Hurricane Celia edit Category 1 hurricane SSHWS nbsp nbsp DurationJuly 19 July 25Peak intensity85 mph 140 km h 1 min 981 mbar hPa A vigorous tropical wave entered the East Pacific on July 13 acquiring sufficient organization to be declared a tropical depression at 00 00 UTC on July 19 while located about 620 mi 1 000 km south southwest of the southern tip of the Baja California Peninsula Directed west northwest around a subtropical ridge the cyclone steadily intensified amongst a favorable environment becoming Tropical Storm Celia at 12 00 UTC that same day and further strengthening into a Category 1 hurricane on the Saffir Simpson hurricane wind scale the season s first at 00 00 UTC on July 22 After attaining peak winds of 85 mph 137 km h six hours later an increasingly unfavorable environment began to hinder the system Celia weakened to a tropical storm at 18 00 UTC on July 22 and eventually degenerated into a remnant low at 00 00 UTC on July 26 The post tropical cyclone dissipated about 1 740 mi 2 800 km west southwest of the southern tip of the Baja California Peninsula later that morning 20 Hurricane Darby edit Main article Hurricane Darby 2004 Category 3 hurricane SSHWS nbsp nbsp DurationJuly 26 August 1Peak intensity120 mph 195 km h 1 min 957 mbar hPa A tropical depression formed at 12 00 UTC on July 26 while positioned about 760 mi 1 220 km south southwest of Cabo San Lucas Mexico from a tropical wave that entered the eastern Pacific nearly a week prior The system quickly intensified as it curved west northwest around a subtropical ridge becoming Tropical Storm Darby at 00 00 UTC on July 27 and strengthening into a Category 1 hurricane early the next day After attaining its peak as the season s first major hurricane with winds of 120 mph 190 km h increasing wind shear and cooler sea surface temperatures begin to weaken the cyclone It weakened to a tropical storm at 12 00 UTC on July 30 and further to a tropical depression a day later as it entered the jurisdiction of the Central Pacific Hurricane Center 12 At 12 00 UTC on August 1 Darby dissipated about 850 mi 1 370 km east of the Hawaiian Islands 18 Although Darby produced no impacts to land as a tropical cyclone its remnant moisture field combined with an upper level trough over Hawaii to produce an unstable atmosphere General rainfall amounts of 2 5 in 51 127 mm were recorded across the Big Island and Oahu with a localized peak of 9 04 in 230 mm in Kaneohe this led to flooding and several road closures Minor stream flooding was observed on the southeast flank of Mount Haleakala A rainfall total of 3 06 in 78 mm was recorded at the Honolulu International Airport contributing to the wettest August on record in the city 21 Some coffee and macadamia nut trees were damaged 22 Tropical Depression Six E edit Tropical depression SSHWS nbsp nbsp DurationAugust 1 August 2Peak intensity30 mph 45 km h 1 min 1008 mbar hPa Operationally an area of disturbed weather was thought to have coalesced into a tropical depression at 09 00 UTC on July 29 while located well southwest of the Baja California Peninsula The depression was only expected to intensify slightly before entering cooler waters and interacting with outflow from nearby Hurricane Darby 23 By late that evening however its presentation on satellite imagery more resembled a trough and the NHC discontinued advisories 24 In post season analysis the organization determined that the depression did not form until 06 00 UTC on August 1 and lasted but 24 hours 25 Tropical Storm Estelle edit Tropical storm SSHWS nbsp nbsp DurationAugust 19 August 24Peak intensity70 mph 110 km h 1 min 989 mbar hPa A tropical wave interacted with a disturbance embedded in the ITCZ in mid August leading to the designation of a tropical depression at 06 00 UTC on August 19 while located 1 440 mi 2 320 km east southeast of Hilo Hawaii The cyclone moved west northwest following formation steered around a subtropical ridge It intensified into Tropical Storm Estelle at 06 00 UTC on August 20 and attained peak winds of 70 mph 110 km h at 12 00 UTC the next morning as it crossed into the central Pacific 26 Thereafter increasing wind shear caused Estelle to a steady weakening trend At 00 00 UTC on August 23 the cyclone decelerated to a tropical depression while turning west southwest and at 18 00 UTC the following day it further degenerated into a remnant low The post tropical cyclone continued on a west southwest trajectory prior to dissipating south southeast of the Big Island at 00 00 UTC on August 26 18 Hurricane Frank edit Category 1 hurricane SSHWS nbsp nbsp DurationAugust 23 August 26Peak intensity85 mph 140 km h 1 min 979 mbar hPa A tropical wave the remnants of Tropical Storm Earl in the Atlantic crossed into the eastern Pacific in mid August and steadily organized to become a tropical depression at 06 00 UTC on August 23 well south of the coastline of Mexico The depression intensified into Tropical Storm Frank six hours later as banding features and central convection increased Steered northwest within a favorable environment the cyclone rapidly intensified into a Category 1 hurricane by 18 00 UTC and ultimately attained peak winds of 85 mph 137 km h twelve hours later Frank steadily weakened thereafter as it entered cooler ocean temperatures degenerating into a remnant low at 06 00 UTC on August 26 The remnant low drifted southwest before diffusing into a trough well south of the Baja California Peninsula the following day 27 Tropical Depression Nine E edit Tropical depression SSHWS nbsp nbsp DurationAugust 23 August 26Peak intensity35 mph 55 km h 1 min 1005 mbar hPa A tropical wave crossed Central America on August 15 only slowing organizing into a tropical depression at 18 00 UTC on August 23 while located about 920 mi 1 480 km west southwest of Cabo San Lucas Mexico Steered north northwest and eventually west the cyclone failed to intensify further into a tropical storm amid cool sea surface temperatures and southerly wind shear and it instead degenerated into a remnant low at 18 00 UTC on August 26 The post tropical cyclone turned west southwest before dissipating about 1 095 mi 1 762 km east of Hilo Hawaii early on August 28 28 Tropical Storm Georgette edit Tropical storm SSHWS nbsp nbsp DurationAugust 26 August 30Peak intensity65 mph 100 km h 1 min 995 mbar hPa A westward moving tropical wave entered the eastern Pacific in late August acquiring sufficient organization to be declared a tropical depression at 12 00 UTC on August 26 about 605 miles 974 km south southeast of the Baja California Peninsula The depression intensified into Tropical Storm Georgette six hours later as its satellite presentation improved and it reached peak winds of 65 mph 105 km h at 12 00 UTC on August 27 Increasingly hostile upper level winds began to impinge on the west northwest moving tropical cyclone shortly thereafter ultimately causing it to degenerate into a remnant low by 18 00 UTC on August 30 The post tropical cyclone continued its forward course until dissipating early on September 3 29 Hurricane Howard edit Category 4 hurricane SSHWS nbsp nbsp DurationAugust 30 September 5Peak intensity140 mph 220 km h 1 min 943 mbar hPa Main article Hurricane Howard 2004 A westward moving tropical wave from Africa entered the eastern Pacific in late August organizing into a tropical depression at 12 00 UTC on August 30 south of the coastline of Mexico The depression intensified into Tropical Storm Howard twelve hours later and further developed into a hurricane at 06 00 UTC on September 1 On its northwest track a favorable environment regime prompted the cyclone to begin a period of rapid intensification and it attained its peak as a Category 4 hurricane with winds of 140 mph 230 km h at 12 00 UTC on September 2 Cooler ocean temperatures led to a steady weakening trend thereafter and Howard degenerated into a remnant low at 18 00 UTC on September 5 The low turned southwest before dissipating over open waters on September 10 30 Although the storm remained offshore the outer bands of the storm produced significant flooding across the Baja California peninsula 31 which damaged agricultural land and at least 393 homes 32 Swells reached 18 ft 5 5 m along the Baja California coastline and 12 ft 3 7 m along the California coastline about 1 000 lifeguard rescues took place in California due to the waves 33 34 Moisture from the storm enhanced rainfall in parts of Arizona leading to minor accumulations 35 Hurricane Isis edit Category 1 hurricane SSHWS nbsp nbsp DurationSeptember 8 September 16Peak intensity75 mph 120 km h 1 min 987 mbar hPa A tropical wave possibly responsible for the formation of Hurricane Frances in the Atlantic entered the eastern Pacific in early September gaining sufficient organization to be declared a tropical depression at 06 00 UTC on September 8 about 530 miles 850 km south of Cabo San Lucas Mexico The system tracked west intensifying into Tropical Storm Isis twelve hours after being designated but weakening back to a tropical depression early on September 10 amid persistent wind shear Upper level winds decreased by September 12 allowing Isis to regain tropical storm intensity by 00 00 UTC and eventually peak as a Category 1 hurricane with winds of 75 mph 121 km h at 12 00 UTC on September 15 After conducting a clockwise loop the hurricane entered cooler waters and began to weaken it degenerated into a remnant low at 18 00 UTC on the next day The low drifted southwest and then west before dissipating well east of Hawaii on September 21 36 Hurricane Javier edit Category 4 hurricane SSHWS nbsp nbsp DurationSeptember 10 September 19Peak intensity150 mph 240 km h 1 min 930 mbar hPa Main article Hurricane Javier 2004 A tropical wave entered the eastern Pacific in early September organizing into a tropical depression at 18 00 UTC on September 10 south of the Gulf of Tehuantepec Under light shear the depression intensified into Tropical Storm Javier at 12 00 UTC the next morning and into a hurricane at 18 00 UTC on September 12 The cyclone soon began a period of rapid intensification as it alternated on a west northwest to northwest course ultimately peaking as a Category 4 hurricane with winds of 150 mph 240 km h at 00 00 UTC on September 14 as a distinct pinhole eye became evident on satellite imagery Cooler waters strong southwesterly shear and an eyewall replacement cycle all weakened Javier thereafter it fell to tropical depression intensity early on September 19 before crossing Baja California and degenerated into a remnant low at 18 00 UTC that day over the Gulf of California The low crossed the state of Sonora before dissipating over mountainous terrain on September 20 13 As a tropical cyclone Javier produced moderate rainfall peaking at 3 14 in 80 mm in Bacanuchi Mexico 37 Three fishermen went missing offshore the coastline due to high surf 38 As a post tropical cyclone the storm s remnant moisture overspread the Southwest United States alleviating a multi year drought 39 Accumulations peaked at 7 in 180 mm in Walnut Creek Arizona with lighter totals across the Four Corners and upper Midwest 40 The remnants of Javier produced 2 in 51 mm of rain in Wyoming cementing its status as the wettest tropical cyclone in the reliable record there 41 Tropical Storm Kay edit Tropical storm SSHWS nbsp nbsp DurationOctober 4 October 6Peak intensity45 mph 75 km h 1 min 1004 mbar hPa An area of disturbed weather developed within the ITCZ well southwest of mainland Mexico coalescing into a tropical depression at 18 00 UTC on October 4 The depression strengthened into Tropical Storm Kay twelve hours later and it attained peak winds of 45 mph 72 km h at 12 00 UTC the next morning as suggested by satellite intensity estimates Moderate northerly shear caused core convection to decrease as the system moved west northwest resulting in Kay degenerating into a remnant low at 12 00 UTC on October 6 over open ocean The low level swirl curved southwestward and dissipated the next day 42 Tropical Storm Lester edit Main article Tropical Storm Lester 2004 Tropical storm SSHWS nbsp nbsp DurationOctober 11 October 13Peak intensity50 mph 85 km h 1 min 1000 mbar hPa An area of disturbed weather south of the Gulf of Tehuantepec organized into a tropical depression at 18 00 UTC on October 11 Steered northwest to west northwest by a mid level ridge to its north and a broad cyclonic circulation to its southwest the depression intensified into Tropical Storm Lester at 18 00 UTC the next day The system was initially forecast to become a hurricane amid light shear however interaction with the coastline of Mexico and the nearby cyclonic circulation instead caused Lester to weaken Observations from a reconnaissance aircraft indicated the storm degenerated into a trough at 18 00 UTC on October 13 43 As the cyclone paralleled the coastline of Mexico a tropical storm warning was hoisted from Punta Maldonado Guerrero to Lazaro Cardenas Michoacan Rainfall accumulations of 3 5 in 76 127 mm were observed across Oaxaca and Guerrero leading to localized flooding 43 Tropical Depression Sixteen E edit Main article Tropical Depression Sixteen E 2004 Tropical depression SSHWS nbsp nbsp DurationOctober 25 October 26Peak intensity35 mph 55 km h 1 min 1004 mbar hPa A tropical wave entered the eastern Pacific in mid October interacting with two previous tropical waves that resulted in a large area of disturbed weather The system organized into a tropical depression at 00 00 UTC on October 25 about 315 miles 507 km south southeast of the Baja California Peninsula Initially the cyclone was characterized by a large area of deep convection enhanced from an upper level trough This same trough soon imparted strong wind shear preventing intensification The depression moved into Sinaloa early that same day and dissipated over the Sierra Madre Occidental at 18 00 UTC on October 26 44 The depression produced locally heavy rainfall across western Mexico resulting in some localized flooding 44 Culiacan International Airport recorded a peak wind gust of 80 mph 130 km h suggesting a tornado may have occurred nearby 45 The remnant mid level circulation associated with the cyclone interacted with a frontal system to produce strong thunderstorms across the southern Great Plains 44 Other system edit On August 14 the Japan Meteorological Agency had stated that Tropical Storm Malakas had briefly exited the West Pacific basin and entered the Central Pacific basin as a weakening tropical depression 46 Storm names editMain articles Tropical cyclone naming History of tropical cyclone naming and List of historic tropical cyclone names The following list of names was used for named storms that formed in the North Pacific east of 140 W in 2004 47 This is the same list used for the 1998 season 48 No names were retired from this list by the World Meteorological Organization following the season and it was used again for the 2010 season 49 Agatha Blas Celia Darby Estelle Frank Georgette Howard Isis Javier Kay Lester Madeline unused Newton unused Orlene unused Paine unused Roslyn unused Seymour unused Tina unused Virgil unused Winifred unused Xavier unused Yolanda unused Zeke unused For storms that form in the North Pacific between 140 W and the International Date Line the names come from a series of four rotating lists Names are used one after the other without regard to year and when the bottom of one list is reached the next named storm receives the name at the top of the next list 47 No named storms formed within the region in 2004 Named storms in the table above that crossed into the area during the year are noted 18 Season effects editThis is a table of all of the storms that formed in the 2004 Pacific hurricane season It includes their name duration peak classification and intensities areas affected damage and death totals Deaths in parentheses are additional and indirect an example of an indirect death would be a traffic accident but were still related to that storm Damage and deaths include totals while the storm was extratropical a wave or a low and all of the damage figures are in 2004 USD Saffir Simpson scale TD TS C1 C2 C3 C4 C52004 Pacific hurricane season statistics Stormname Dates active Storm categoryat peak intensity Max 1 minwindmph km h Min press mbar Areas affected Damage USD Deaths Ref s Agatha May 22 24 Tropical storm 60 95 997 Revillagigedo Islands Clarion Island Southwestern Mexico None None Two E July 2 3 Tropical depression 35 55 1007 None None None One C July 5 Tropical depression 30 45 1007 None None None Blas July 12 15 Tropical storm 65 100 991 Northwestern Mexico Baja California Peninsula Southwestern United States None None Celia July 19 25 Category 1 hurricane 85 140 981 None None None Darby July 26 August 1 Category 3 hurricane 120 195 957 None Minimal None Six E August 1 2 Tropical depression 30 45 1008 None None None Estelle August 19 24 Tropical storm 70 110 989 None None None Frank August 23 26 Category 1 hurricane 85 140 979 Baja California Peninsula None None Nine E August 23 26 Tropical depression 35 55 1005 None None None Georgette August 26 30 Tropical storm 65 100 995 None None None Howard August 30 September 5 Category 4 hurricane 140 220 943 Baja California Peninsula Western United States California Arizona Minimal None Isis September 8 16 Category 1 hurricane 75 120 987 None None None Javier September 10 19 Category 4 hurricane 150 240 930 Baja California Peninsula Northwestern Mexico Southwestern United States Arizona Texas Minimal 3 missing Kay October 4 6 Tropical storm 45 75 1004 None None None Lester October 11 13 Tropical storm 50 85 1000 Southwestern Mexico None None Sixteen E October 25 26 Tropical depression 35 55 1004 Baja California Peninsula Northwestern Mexico Southwestern United States Texas California None None Season aggregates 17 systems May 22 October 26 150 240 930 Minimal None See also edit nbsp Tropical cyclones portal List of Pacific hurricanes Pacific hurricane season Tropical cyclones in 2004 2004 Atlantic hurricane season 2004 Pacific typhoon season 2004 North Indian Ocean cyclone season South West Indian Ocean cyclone seasons 2003 04 2004 05 Australian region cyclone seasons 2003 04 2004 05 South Pacific cyclone seasons 2003 04 2004 05References edit Frequently Asked Questions Central Pacific Hurricane Center May 12 2016 Retrieved December 31 2016 a b Informe sobre el pronostico de la temporada de ciclones del 2004 Report in Spanish Servicio Meteorologico Nacional January 2004 Archived from the original on April 14 2005 Retrieved December 31 2016 a href Template Cite report html title Template Cite report cite report a CS1 maint bot original URL status unknown link a b Informe sobre el Pronostico de la Temporada de Ciclones del 2004 Report in Spanish Servicio Meteorologico Nacional May 2004 Archived from the original on April 14 2005 Retrieved December 31 2016 a href Template Cite report html title Template Cite report cite report a CS1 maint bot original URL status unknown link a b NOAA Issues 2004 Experimental Eastern Pacific Hurricane Outlook Report National Oceanic and Atmospheric Administration May 21 2004 Archived from the original on 2016 12 09 Retrieved October 16 2016 a b Informe sobre el Pronostico de la Temporada de Ciclones del 2004 Report in Spanish Servicio Meteorologico Nacional August 2004 Archived from the original on April 14 2005 Retrieved December 31 2016 a href Template Cite report html title Template Cite report cite report a CS1 maint bot original URL status unknown link NOAA Expects Near Average Central Pacific Hurricane Season Report National Oceanic and Atmospheric Administration May 17 2004 Archived from the original on 2016 12 09 Retrieved October 16 2016 Basin Archives Northeast Pacific Ocean Historical Tropical Cyclone Statistics Fort Collins Colorado Colorado State University Retrieved July 8 2022 Hurricane Specialist Unit December 1 2004 Tropical Weather Summary November Report National Hurricane Center Retrieved October 16 2016 a b Lixion A Avila June 2 2004 Tropical Cyclone Report Tropical Storm Agatha PDF Report National Hurricane Center p 1 Retrieved October 16 2016 Lixion A Avila Stacy R Stewart July 1 2004 Tropical Weather Summary July Report National Hurricane Center Retrieved October 16 2016 Hurricane Celia Earth Observatory NASA Goddard Space Flight Center 23 July 2004 Retrieved August 1 2022 a b Jack L Beven II December 17 2004 Tropical Cyclone Report Hurricane Darby PDF Report National Hurricane Center p 1 Retrieved May 26 2015 a b Lixion A Avila November 15 2004 Tropical Cyclone Report Hurricane Javier PDF Report National Hurricane Center p 1 Retrieved October 16 2016 National Hurricane Center Hurricane Research Division Central Pacific Hurricane Center April 4 2023 The Northeast and North Central Pacific hurricane database 1949 2022 United States National Oceanic and Atmospheric Administration s National Weather Service A guide on how to read the database is available here nbsp This article incorporates text from this source which is in the public domain Hurricane Specialist Unit August 2 2005 Eastern North Pacific Hurricane Season of 2004 National Hurricane Center 137 3 American Meteorological Society 1026 Bibcode 2006MWRv 134 1026A doi 10 1175 MWR3095 1 a b Miles B Lawrence July 17 2004 Tropical Cyclone Report Tropical Depression Two E PDF Report National Hurricane Center p 1 Retrieved October 16 2016 Lixion A Avila July 2 2004 Tropical Depression Two E Discussion Number 2 National Hurricane Center Retrieved October 16 2016 a b c d Nash Andy Craig Tim Matsuda Roy Powell Jeffrey February 2005 2004 Tropical Cyclones Central North Pacific PDF Report Honolulu Hawaii Central Pacific Hurricane Center Retrieved January 30 2024 Richard J Pasch August 5 2004 Tropical Cyclone Report Tropical Storm Blas PDF Report Miami Florida National Hurricane Center pp 1 3 Retrieved May 26 2015 Stacy R Stewart October 12 2004 Tropical Cyclone Report Hurricane Celia PDF Report Miami Florida National Hurricane Center pp 1 2 Retrieved May 26 2015 Excessive Rainfall from the Remnants of Darby Report National Weather Service Weather Forecast Office in Honolulu Hawaii Retrieved October 16 2016 Howard Dicus August 5 2004 Rains flood some farmlands but most manage well American City Business Journals Retrieved October 16 2016 Stacy R Stewart Tropical Depression Six E Discussion Number 1 Report July 29 2004 Retrieved October 16 2016 James L Franklin Tropical Depression Six E Discussion Number 4 Report July 29 2004 Retrieved October 16 2016 James L Franklin Richard D Knabb November 16 2004 Abbreviated Tropical Cyclone Report Tropical Depression Six E PDF Report National Hurricane Center p 1 Retrieved October 16 2016 Lixion A Avila November 3 2004 Tropical Cyclone Report Tropical Storm Estelle PDF Report Miami Florida National Hurricane Center pp 1 4 Retrieved May 28 2015 David P Roberts Miles B Lawrence November 19 2004 Tropical Cyclone Report Hurricane Frank PDF Report National Hurricane Center p 1 Retrieved October 16 2016 Richard J Pasch November 12 2004 Tropical Cyclone Report Tropical Depression Nine E PDF Report Miami Florida National Hurricane Center p 1 Retrieved June 9 2015 Stacy R Stewart October 14 2004 Tropical Cyclone Report Tropical Storm Georgette PDF Report National Hurricane Center p 1 Retrieved October 16 2016 Jack L Beven II December 13 2004 Tropical Cyclone Report Hurricane Howard PDF Report National Hurricane Center p 1 Retrieved October 16 2016 Luciano Garcia Valenzuela September 4 2004 Decretan alerta por Howard El Siglo de Durango in Spanish Retrieved October 16 2016 Apoyaran Para Rehabilitar Viviendas in Spanish Navajoa September 9 2004 Archived from the original on July 5 2007 Retrieved October 16 2016 a href Template Cite web html title Template Cite web cite web a CS1 maint bot original URL status unknown link Yi Wyn Wen September 13 2004 The Perfect Storms Sports Illustrated Vault Retrieved October 16 2016 Storm Event California High Surf Report National Centers for Environmental Information 2004 Retrieved October 16 2016 Chuck George September 3 2004 Rainy Start To Tucson s Labor Day Weekend KOLD News Archived from the original on January 3 2013 Retrieved October 16 2016 James L Franklin David P Roberts November 17 2004 Tropical Cyclone Report Hurricane Isis PDF Report National Hurricane Center p 1 Retrieved October 16 2016 Huracan Javier del Oceano Pacifico PDF Report in Spanish Servicio Meteorologico Nacional December 1 2004 Archived from the original PDF on October 18 2016 Retrieved October 16 2016 Huracan Javier acecha a la costa pacifica de Mexico Nacion Internacionales September 15 2004 Archived from the original on 2016 10 18 Retrieved October 16 2016 Weekly Weather and Crop Bulletin Report National Agricultural Statistics Service September 21 2004 Retrieved October 16 2016 David M Roth Hurricane Javier September 18 21 2004 Report Weather Prediction Center Retrieved October 16 2016 David M Roth Maximum Rainfall caused by Tropical Cyclones and their remnants per state 1950 2012 GIF Weather Prediction Center Retrieved October 16 2016 David P Roberts Miles B Lawrence November 20 2004 Tropical Cyclone Report Tropical Storm Kay PDF Report National Hurricane Center p 1 Retrieved October 16 2016 a b Richard J Pasch David P Roberts December 10 2004 Tropical Cyclone Report Tropical Storm Lester PDF Report National Hurricane Center pp 1 2 Retrieved October 16 2016 a b c Stacy R Stewart November 18 2004 Tropical Cyclone Report Tropical Depression Sixteen E PDF Report National Hurricane Center pp 1 3 Retrieved October 16 2016 Hurricane Specialist Unit November 1 2004 Tropical Weather Summary October Report National Hurricane Center Retrieved October 16 2016 Digital Typhoon List of weather charts on August 14 2004 Sat Digital Typhoon Retrieved December 30 2016 a b National Hurricane Operations Plan PDF Report Washington D C NOAA Office of the Federal Coordinator for Meteorological Services and Supporting Research May 2004 p 3 10 11 Retrieved March 5 2024 National Hurricane Operations Plan PDF Report Washington D C NOAA Office of the Federal Coordinator for Meteorological Services and Supporting Research May 1998 p 3 8 Retrieved January 30 2024 National Hurricane Operations Plan PDF Report Washington D C NOAA Office of the Federal Coordinator for Meteorological Services and Supporting Research May 2010 p 3 8 Retrieved January 30 2024 External links edit nbsp Wikimedia Commons has media related to 2004 Pacific hurricane season National Hurricane Center s 2004 Pacific hurricane season archive Central Pacific Hurricane Center s 2004 Pacific hurricane season summary Retrieved from https en wikipedia org w index php title 2004 Pacific hurricane season amp oldid 1212211449, wikipedia, wiki, book, books, library,

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