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2004–05 South-West Indian Ocean cyclone season

The 2004–05 South-West Indian Ocean cyclone season was a near average season, despite beginning unusually early on August 30 with the formation of an early-season tropical depression. Météo-France's meteorological office in Réunion (MFR) ultimately monitored 18 tropical disturbances during the season, of which 15 became tropical depressions. Two storms – Arola and Bento – formed in November, and the latter became the most intense November cyclone on record. Bento attained its peak intensity at a low latitude, and weakened before threatening land. Tropical Cyclone Chambo was the only named storm in December. In January, Severe Tropical Storm Daren and Cyclone Ernest existed simultaneously. The latter storm struck southern Madagascar, and five days later, Moderate Tropical Storm Felapi affected the same area; the two storms killed 78 people and left over 32,000 people homeless. At the end of January, Severe Tropical Storm Gerard existed as an unnamed tropical storm for 18 hours due to discrepancies between warning centers.

2004–05 South-West Indian Ocean cyclone season
Season summary map
Seasonal boundaries
First system formedAugust 30, 2004
Last system dissipatedApril 11, 2005
Strongest storm
NameJuliet
 • Maximum winds220 km/h (140 mph)
(10-minute sustained)
 • Lowest pressure905 hPa (mbar)
Seasonal statistics
Total disturbances18, 1 unofficial
Total depressions15, 1 unofficial
Total storms10, 1 unofficial
Tropical cyclones4
Intense tropical cyclones3
Very intense tropical cyclones1
Total fatalities78 total
Total damageUnknown
Related articles
South-West Indian Ocean tropical cyclone seasons
2002–03, 2003–04, 2004–05, 2005–06, 2006–07

After a series of weak tropical systems in February, there were two storms in March. Severe Tropical Storm Hennie brought heavy rainfall to the Mascarene Islands, and Severe Tropical Storm Isang remained away from land. The season's strongest storm originated in the neighboring Australian basin, developing in early April near the Cocos Islands. After being named Adeline by the Australian Bureau of Meteorology (BoM), the MFR renamed the storm Juliet once the storm crossed 90°E. Juliet would reach maximum sustained winds of 220 km/h (135 mph), making it a very intense tropical cyclone. Juliet damaged corn plantations on the island of Rodrigues before becoming an extratropical cyclone on April 11, thus ending the season.

Seasonal summary edit

Cyclone ErnestTropical cyclone scales#Comparisons across basins

Météo-France's meteorological office in Réunion (MFR) is the official Regional Specialized Meteorological Center for the South-West Indian Ocean, tracking all tropical cyclones from the east coast of Africa to 90° E.[1] The agency tracked 18 tropical disturbances, including one zone of disturbed weather that lasted for one advisory, which was higher than normal. The agency assessed that 15 disturbances reached tropical depression intensity.[2][3] Ten of these weather systems intensified into named storms, which was one higher than normal. There were 44 days in which a named storm was active, lower than the average of 53. There was an unusual period of inactivity across much of the basin from January to March, typically the most active months. During this time, the Intertropical Convergence Zone was located farther south than usual, causing any developing storms to reach their peak intensity at higher latitudes. The exception was southern Madagascar, which was affected by Cyclone Ernest and Tropical Storm Felapi in a five-day span in late January. Four of the named storms attained maximum sustained winds of at least 120 km/h (75 mph), the threshold for tropical cyclone intensity; this was also near normal. Three tropical cyclones strengthened into intense tropical cyclones, including Very Intense Tropical Cyclone Juliet.[2]

In addition to the MFR, the American-based Joint Typhoon Warning Center issued warnings for cyclones in the basin, as well as the entire southern hemisphere. The agency did not track Tropical Storm Felapi, and it estimated that a tropical depression in October attained tropical storm status.[4]

Systems edit

Severe Tropical Storm Arola edit

Severe tropical storm (MFR)
Category 1 tropical cyclone (SSHWS)
   
DurationNovember 6 – November 18
Peak intensity110 km/h (70 mph) (10-min);
978 hPa (mbar)

The near-equatorial trough spawned an area of convection east of Diego Garcia on November 6, which the MFR classified as a tropical disturbance. The system slowly organized amid favorable conditions, including low to moderate wind shear. On November 8, the MFR upgraded the system to a tropical depression and later Moderate Tropical Storm Arola, and the JTWC classified it as Tropical Cyclone 03S. Steered by a ridge to the south, Arola moved southwestward at first while quickly intensifying. Late on November 8, the MFR estimated peak winds of 110 km/h (70 mph), making Arola a severe tropical storm. Early the next day, the JTWC upgraded the storm to the equivalent of a minimal hurricane, estimating peak winds of 120 km/h (75 mph). The storm turned to a westward drift, entering an area of higher wind shear and cooler waters, which caused Arola to weaken. On November 12, the MFR downgraded the storm to a tropical depression, by which time the storm was moving southwestward again, passing south of Diego Garcia. The JTWC discontinued advisories the next day. The MFR tracked Arola until November 18.[5][6][4][7]

Intense Tropical Cyclone Bento edit

Intense tropical cyclone (MFR)
Category 5 tropical cyclone (SSHWS)
   
DurationNovember 19 – December 3
Peak intensity215 km/h (130 mph) (10-min);
915 hPa (mbar)

On the same day that Arola dissipated, the near-equatorial trough spawned another area of convection east of Diego Garcia.[5] A day later, the MFR classified the system as a tropical disturbance as the thunderstorms organized and consolidated, amid favorable conditions. On November 20, the MFR upgraded the system to Tropical Storm Bento, and the JTWC initiated advisories as Tropical Cyclone 04S. At first, Bento drifted to the southeast, but turned to the west two days later. The MFR upgraded the storm to tropical cyclone status on November 22, the same day that the storm began a rapid intensification phase. On November 23, the MFR estimated peak 10 minute winds of 215 km/h (135 mph), and the JTWC estimated peak 1 minute winds of 260 km/h (160 mph), equivalent to a Category 5 on the Saffir–Simpson scale. This made Bento among the most intense tropical cyclones in the basin within 10º of the equator, only surpassed by Cyclone Fantala in April 2016.[4][8][7][9] It also made Bento the strongest cyclone in the basin in the month of November, surpassing Cyclone Agnielle in 1995.[2]

Around its time of peak intensity, Bento was located far away from land – about 325 km (200 mi) east-southeast of Diego Garcia. It was also moving southwestward due to a ridge to its southeast. On November 24, the cyclone began weakening due to an eyewall replacement cycle, as well as the presence of drier air and increased wind shear. A day later, Bento turned to the southeast, steered by a passing trough. The MFR downgraded the cyclone to tropical storm status on November 26, but upgraded it back to tropical cyclone status a day later. By late on November 27, the circulation was exposed from the convection. Bento turned to the west and failed to reintensify due to cooler waters. The JTWC discontinued advisories on November 29, but the MFR continued tracking the system as a tropical disturbance until December 3, when Bento was passing north of the Mascarene Islands.[5][4][8][7]

Tropical Cyclone Chambo edit

Tropical cyclone (MFR)
Category 3 tropical cyclone (SSHWS)
   
DurationDecember 22 – December 30
Peak intensity155 km/h (100 mph) (10-min);
950 hPa (mbar)

In the middle of December, the near-equatorial trough spawned an area of convection to the west of Indonesia. For several days, the system drifted westward through an area of minimal wind shear. On December 22, the MFR classified the system as Tropical Disturbance 6 to the northwest of the Cocos Islands. By that time, the thunderstorms were increasing and consolidating. The JTWC classified the system as Tropical Cyclone 06S on December 23. On the next day, the MFR upgraded the system to Moderate Tropical Storm Chambo. The storm quickly intensified as it moved southwestward, steered by a ridge to its southeast. On December 25, the MFR upgraded Chambo to tropical cyclone status, and the next day estimated peak 10 minute winds of 155 km/h (95 mph). The JTWC meanwhile estimated peak 1 minute winds of 195 km/h (120 mph). Cooler waters and stronger wind shear caused Chambo to begin weakening on December 27. By the next day, the circulation became exposed from the thunderstorms, and the JTWC discontinued advisories. On December 30, the MFR reclassified Chambo as an extratropical cyclone. The storm turned to the south and later southeast, and was last mentioned by the MFR on January 2.[10][11][12]

Intense Tropical Cyclone Ernest edit

Intense tropical cyclone (MFR)
Category 3 tropical cyclone (SSHWS)
   
DurationJanuary 16 – January 23
Peak intensity165 km/h (105 mph) (10-min);
950 hPa (mbar)

An area of convection developed west of Diego Garcia on January 16, prompting the MFR to classify it as Tropical Disturbance 8. A day later, the agency briefly discontinued advisories, only to resume them on January 19 as the disturbance passed north of Madagascar. That day, the JTWC classified the system as Tropical Cyclone 12S. On January 20, the MFR upgraded the system to Tropical Storm Ernest to the east of the Comoros. The storm quickly intensified, and within 12 hours of being named, the MFR upgraded Ernest to tropical cyclone status. The cyclone turned to the south through the Mozambique Channel, attaining peak winds of 165 km/h (105 mph) on January 22, according to the MFR. The JTWC estimated peak 1 minute winds of 185 km/h (115 mph). On the next day, Ernest turned southeast and made landfall in extreme southern Madagascar, near Itampolo. It quickly emerged over open waters and weakened. On January 24, the MFR reclassified Ernest as an extratropical cyclone, tracking it for one more day.[3][4][2][13]

In southern Madagascar, Ernest produced high wind gusts, reaching 180 km/h (110 mph) in Toliara. The same town recorded heavy rainfall during the storm's passage, totaling 237.2 mm (9.34 in) over 24 hours. Ernest's Madagascar impacts were followed by Tropical Storm Felapi five days later.[2] Ernest killed 78 people in Madagascar.[14] Collectively, Ernest and Felapi damaged 5,792 buildings, which left 32,191 people homeless.[2] Madagascar's National Emergency Centre deployed workers to do search and rescue missions and provide water to storm victims.[15] The World Food Programme provided 45 tons of rice to affected residents, although persistent flooding disrupted relief work.[16]

Severe Tropical Storm Daren edit

Severe tropical storm (MFR)
Tropical storm (SSHWS)
   
DurationJanuary 17 – January 23
Peak intensity95 km/h (60 mph) (10-min);
985 hPa (mbar)

An area of thunderstorms formed on January 13 to the northwest of the Cocos Islands in the Australian basin. The system moved westward and organized gradually, hampered by strong wind shear. On January 17, the MFR classified the system as Tropical Disturbance 9 to the east of Diego Garcia. On the next day, the JTWC classified the disturbance as Tropical Cyclone 11S. The nascent system intensified into Tropical Storm Daren on January 19, reaching peak 10 minute winds of 95 km/h (60 mph) that day according to the MFR. The JTWC meanwhile estimated peak 1 minute winds of 85 km/h (55 mph). Steered by a ridge to its southeast, Daren moved southwestward and failed to intensify further. After encountering stronger wind shear, Daren weakened, and its circulation became exposed from the thunderstorms. The JTWC discontinued advisories on January 20. On the next day, the MFR downgraded Daren to a tropical depression while the system was passing north of Rodrigues. The MFR continued tracking Daren until January 23, when the disturbance was passing north of Mauritius.[3][17]

Moderate Tropical Storm Felapi edit

Moderate tropical storm (MFR)
   
DurationJanuary 26 – February 3
Peak intensity65 km/h (40 mph) (10-min);
995 hPa (mbar)

Three days after Cyclone Ernest exited the Mozambique Channel, an area of convection developed in the region, which the MFR classified as a tropical disturbance on January 26. The system organized while moving toward western Madagascar. On January 27, the MFR upgraded it to Moderate Tropical Storm Felapi, estimating peak winds of 65 km/h (40 mph). That day, Felapi moved ashore near Toliara, and quickly weakened back to tropical depression status. The system emerged near the southeast coast of Madagascar and turned to the northeast, transitioning into a subtropical cyclone. On January 31, Felapi turned to the south, and re-intensified to its former peak intensity as a subtropical depression. The storm weakened again and accelerated to the southeast. The MFR continued tracking Felapi until February 3.[3][18] The JTWC did not issue advisories on the storm.[3]

In southern Madagascar, Felapi dropped additional rainfall following Cyclone Ernest. Rainfall in Morondava reached 157.2 mm (6.19 in). Winds on the island reached 61 km/h (38 mph) inland at Ranohira.[2]

Severe Tropical Storm Gerard edit

Severe tropical storm (MFR)
Tropical storm (SSHWS)
   
DurationJanuary 29 – February 5
Peak intensity110 km/h (70 mph) (10-min);
973 hPa (mbar)

An area of convection persisted east of Diego Garcia on January 27. The system moved west-southwestward, with its circulation displaced from the thunderstorms due to strong wind shear and cooler air. The MFR classified the system as a tropical disturbance on January 29 and upgraded it to a tropical depression the next day, only to downgrade it again to a disturbance on January 31, after nearly all thunderstorms diminished. For several days, the weak system drifted southwestward toward the Mascarene Islands, steered by a ridge to the southeast. On February 2, thunderstorm activity increased as the system passed over Rodrigues, although the structure resembled a monsoon depression more commonly found in the Western Pacific Ocean. Over the next day, the structure became more akin to a tropical cyclone, with increasing convection and an eye-like feature near the center.[19][2][20]

On February 3, the JTWC initiated advisories on Tropical Cyclone 14S, and the MFR upgraded the depression to a moderate tropical storm. Ordinarily, this would result in the system being named; however, the Mauritius Meteorological Services responsible for naming believed it had not yet attained such intensity. For about 15 hours, the unnamed tropical storm intensified while accelerating to the south due to a passing trough. At 03:00 UTC on February 4, the Mauritius Meteorological Services named the storm Gerard. Shortly thereafter, the MFR estimated peak winds of 115 km/h (70 mph), just shy of tropical cyclone status, and similar to the JTWC estimate of 110 km/h (70 mph). The MFR noted uncertainty in the peak winds, due to the fast forward speed and small size. On February 5, Gerard rapidly weakened as it transitioned into an extratropical cyclone.[19][4][2] In the report to the WMO, the MFR noted that "for a tropical depression system of such intensity not to be named is unprecedented in the recent history of the basin."[2]

Severe Tropical Storm Hennie edit

Severe tropical storm (MFR)
Category 1 tropical cyclone (SSHWS)
   
DurationMarch 19 – March 26
Peak intensity100 km/h (65 mph) (10-min);
978 hPa (mbar)

After a period of inactivity lasting about three weeks, a tropical disturbance formed on March 19 to the west of Diego Garcia. With low wind shear, the system developed a broad area of rotating thunderstorms. It moved southwestward, steered by a ridge to the southeast. The JTWC initiated advisories on the system late on March 21 as Tropical Cyclone 24S. On the next day, the MFR upgraded the disturbance to a tropical depression, and the Mauritius Meteorological Services named the system Hennie due to the threat to the Mascarene Islands. The MFR upgraded Hennie to a moderate tropical storm on March 23, and by that time the storm was moving southward. On March 24, Hennie passed about 140 km (85 mi) east of Mauritius. That day, the MFR estimated peak 10 minute winds of 100 km/h (60 mph), making Hennie a severe tropical storm. The JTWC estimated peak 1 minute winds of 120 km/h (75 mph), equivalent to a minimal hurricane. After passing the Mascarene Islands, Hennie turned to the southeast, entering an area of cooler, drier air. The circulation became exposed from the convection on March 26. On the next day, the MFR reclassified Hennie as an extratropical cyclone, and continued to track the storm for several more days as it accelerated southeastward. The MFR last mentioned the remnants of Hennie on April 1 when the storm was located over the far southeastern Indian Ocean.[21][4][22]

The storm dropped heavy rainfall in the Mascarene Islands, including a 24-hour precipitation total of 397 mm (15.6 in) in the mountainous peaks of Réunion. Rainfall on Mauritius reached 202.8 mm (7.98 in) at Sans-Souci.[21] The rains caused flooding on Mauritius,[2] resulting in the closure of airports and ports.[23]

Severe Tropical Storm Isang edit

Severe tropical storm (MFR)
Tropical storm (SSHWS)
   
DurationMarch 29 – April 6
Peak intensity110 km/h (70 mph) (10-min);
970 hPa (mbar)

On March 29, an area of convection formed east-southeast of Diego Garcia and consolidated around a broad developing circulation. That day, the MFR designated the system as Tropical Disturbance 17. For several days, the system waxed and waned in organization as it drifted to the west-southwest. On April 3, the thunderstorms increased and organized around the center, prompting the MFR to upgrade the system to Moderate Tropical Storm Isang. That day, the JTWC initiated advisories on Tropical Cyclone 25S, located south of Diego Garcia and northeast of Rodrigues. The storm moved around the ridge to its southeast, intensifying slowly due to dry air in the region. On April 5, Isang turned to the south-east, and the thunderstorms became more organized, developing an eye-like feature. On the next day, the MFR estimated peak 10 minute winds of 115 km/h (70 mph), and the JTWC estimated peak 1 minute winds of 100 km/h (60 mph). Soon after reaching peak intensity, Isang encountered stronger wind shear and cold, dry air, which resulted in weakening. The MFR re-classified the storm as an extratropical cyclone on April 7, and continued tracking Isang for another day.[24][25]

Very Intense Tropical Cyclone Adeline–Juliet edit

Very intense tropical cyclone (MFR)
Category 4 tropical cyclone (SSHWS)
   
DurationApril 5 (Entered basin) – April 11
Peak intensity220 km/h (140 mph) (10-min);
905 hPa (mbar)

The near-equatorial trough spawned a circulation in the Australian region on April 2 to the east of the Cocos Islands. The BoM upgraded the system to Tropical Cyclone Adeline on April 3 while the storm was passing south of the islands. Continuing westward, the storm intensified further, reaching the equivalent of tropical cyclone status on April 4. On the same day, the JTWC classified the storm as Tropical Cyclone 26S. On April 5, Adeline crossed 90°E into the South-West Indian Ocean, whereupon the Mauritius Meteorological Service renamed the storm Juliet. The cyclone intensified further to an intense tropical cyclone on April 6, reaching 10 minute winds of 185 km/h (115 mph) before weakening.[26][4][24][27]

Cyclone Juliet began re-intensifying on April 8, by which time the storm had begun moving to the west-southwest. On April 9, the MFR upgraded Juliet to a very intense tropical cyclone, estimating peak 10 minute winds of 220 km/h (135 mph).[24][27] This would be the last very intense tropical cyclone until Edzani in 2010.[28] The JTWC estimated slightly higher 1-minute winds of 230 km/h (145 mph). On April 10, Juliet turned toward the south, passing about 215 km (135 mi) east-southeast of Rodrigues.[24][27] On the island, the cyclone's strong winds heavily damaged 15 corn plantations.[29] After passing Rodrigues, the cyclone weakened due to drier air, cooler waters, and higher wind shear, causing the circulation to become exposed from the convection. Juliet weakened below tropical cyclone status on April 12 while accelerating to the southeast. On the same day, the MFR reclassified the storm as extratropical. The agency followed Juliet until April 16.[24][27]

Other storms edit

 
Satellite image of Tropical Depression 7 nearing western Madagascar

On August 30, an area of low pressure developed near the edge of Météo-France's area of responsibility within an unseasonably active monsoonal band which coincided with the Madden–Julian oscillation. Tracking towards the southeast, the low experienced strong deep-level wind shear which kept most of the convection displaced from the center of circulation. On August 31, convection managed to develop around the west and southwestern portions of the low,[30] and was designated as Tropical Depression 01.[31] The depression reached its peak intensity at this time with winds of 55 km/h (35 mph 10-minute winds) and a minimum pressure of 999 hPa (mbar).[32] Shortly after, the depression entered Australian Bureau of Meteorology in Perth's area of responsibility. The depression later intensified into a tropical cyclone and was named Phoebe.[30]

Toward the end of October, low-pressure areas developed on both sides of the equator in the west-central Indian Ocean. The system in the North Indian Ocean failed to develop, but the Southern Hemisphere system became Tropical Disturbance 02 on October 25. Moving westward, the disturbance had an organized area of thunderstorms near the center, with favorable conditions provided by the subtropical ridge. The MFR upgraded the disturbance to a depression on October 26, and briefly downgraded the system after the circulation became exposed, only to upgrade it again to a depression the next day. The JTWC initiated warnings on the system as Tropical Cyclone 02S on October 27, estimating 1-minute winds of 65 km/h (40 mph). That day, the system passed about 370 km (230 mi) north of Madagascar. Wind shear in the region caused the storm to weaken again. On October 29, the weak disturbance moved ashore in eastern Tanzania near Dar es Salaam, dropping heavy rainfall.[33]

In late November, the precursor low that would become Cyclone Agni in the North Indian Ocean briefly crossed the equator and entered the basin to reach approximately 0.5° S, keeping its counter-clockwise circulation. The JTWC assessed the low as remaining in the Northern Hemisphere, reaching as far south as 0.7° N. Its center later curved back north and developed into a tropical cyclone north of the equator, reaching the extremely low latitude of 1.5° N while tropical. [34]

On December 11, the MFR issued two bulletins for Subtropical Depression 05. The system formed about halfway between the southern tip of Madagascar, and failed to intensify.[10] On January 4, the MFR began issuing warnings on Tropical Depression 7 in the Mozambique Channel. The system moved southeastward, moving ashore western Madagascar between Morombe and Toliara on January 5, and quickly dissipated. Later in the month, the MFR issued one warning for Zone of Disturbed Weather 10, located well to the southeast of Diego Garcia.[3]

In February, there was a series of three week disturbances. Tropical Depression 13 formed on February 4 to the north of Mauritius. It moved southwestward and failed to intensify beyond winds of 55 km/h (35 mph). The depression passed just east of Mauritius on February 6, and became extratropical two days later. On the same day, Tropical Disturbance 14 formed to the northwest of Mauritius. For two days the system drifted westward before turning back to the east, reaching a point northeast of Mauritius on February 13. The disturbance then turned to the west-southwest, and was tracked by the MFR until February 17. On February 24, Tropical Disturbance 15 formed east of Diego Garcia. It drifted southward and intensified into a tropical depression on February 26, but dissipated two days later.[19]

Storm names edit

A tropical disturbance is named when it reaches moderate tropical storm strength. If a tropical disturbance reaches moderate tropical storm status west of 55°E, then the Sub-regional Tropical Cyclone Advisory Centre in Madagascar assigns the appropriate name to the storm. If a tropical disturbance reaches moderate tropical storm status between 55°E and 90°E, then the Sub-regional Tropical Cyclone Advisory Centre in Mauritius assigns the appropriate name to the storm. A new annual list is used every year so no names are retired.[35]

  • Arola
  • Bento
  • Chambo
  • Daren
  • Ernest
  • Felapi
  • Gerard
  • Hennie
  • Isang
  • Juliet
  • Kalo (unused)
  • Lilian (unused)
  • Madi (unused)
  • Neddy (unused)
  • Ouledi (unused)
  • Patricia (unused)
  • Qiqita (unused)
  • Ramon (unused)
  • Sopani (unused)
  • Tina (unused)
  • Ula (unused)
  • Vera (unused)
  • Willem (unused)
  • Xaoka (unused)
  • Yelda (unused)
  • Zuze (unused)

Seasonal effects edit

This table lists all of the tropical cyclones and subtropical cyclones that were monitored during the 2004–05 South-West Indian Ocean cyclone season. Information on their intensity, duration, name, areas affected, primarily comes from RSMC La Réunion. Death and damage reports come from either press reports or the relevant national disaster management agency while the damage totals are given in 2004 USD.

Name Dates Peak intensity Areas affected Damage
(USD)
Deaths Refs
Category Wind speed Pressure
Arola November 6–18 Severe tropical storm 110 (70) 978 Diego Garcia, Rodrigues, Madagascar None None
Bento November 19 – December 3 Intense tropical cyclone 215 (130) 915 Madagascar None None
Chambo December 22–30 Tropical cyclone 155 (100) 950 None None None
Ernest January 16–23 Intense tropical cyclone 165 (105) 950 Mayotte, Madagascar Unknown 78
Daren January 17–23 Severe tropical storm 95 (60) 985 None None None
Felapi January 26 – February 3 Moderate tropical storm 65 (40) 995 Madagascar None None
Gerard January 29 – February 5 Severe tropical storm 110 (70) 973 None None None
Hennie March 19–26 Severe tropical storm 100 (65) 978 None None None
Isang March 29 – April 6 Severe tropical storm 110 (70) 970 None None None
Adeline-Juliet April 5–11 Very intense tropical cyclone 220 (140) 905 None None None
Season aggregates
18 systems August 30 – April 11 220 km/h (135 mph) 905 hPa (26.72 inHg) Unknown 78

See also edit

Notes edit

References edit

  1. ^ Philippe Caroff; et al. (April 2011). Operational procedures of TC satellite analysis at RSMC La Réunion (PDF) (Report). World Meteorological Organization. pp. 4–5. Retrieved 2013-10-27.
  2. ^ a b c d e f g h i j k RA I Tropical Cyclone Committee for the South-West Indian Ocean Seventeenth Session (PDF) (Report). World Meteorological Organization. 2005. Retrieved January 16, 2019.
  3. ^ a b c d e f Gary Padgett (May 17, 2005). "Monthly Global Tropical Cyclone Summary January 2005". Retrieved January 16, 2019.
  4. ^ a b c d e f g h Annual Tropical Cyclone Report (PDF) (Report). Joint Typhoon Warning Center. Retrieved January 15, 2019.
  5. ^ a b c Darwin Regional Specialised Meteorological Centre (November 2004). (PDF). Bureau of Meteorology: 2. Archived from the original (PDF) on January 16, 2019. Retrieved January 15, 2019. {{cite journal}}: Cite journal requires |journal= (help)
  6. ^ Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 16, 2019. Retrieved January 15, 2019.
  7. ^ a b c Gary Padgett (May 17, 2005). "Monthly Global Tropical Cyclone Summary November 2004". Retrieved January 16, 2019.
  8. ^ a b Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 16, 2019. Retrieved January 15, 2019.
  9. ^ Review of the 2015/2016 and 2016/2017 Cyclone Seasons (DOCX) (Report). World Meteorological Organization. Retrieved January 15, 2019.
  10. ^ a b Gary Padgett (May 17, 2005). "Monthly Global Tropical Cyclone Summary December 2004". Retrieved January 16, 2019.
  11. ^ Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 17, 2019. Retrieved January 16, 2019.
  12. ^ Darwin Regional Specialised Meteorological Centre (December 2004). (PDF). Bureau of Meteorology: 2. Archived from the original (PDF) on January 16, 2019. Retrieved January 15, 2019. {{cite journal}}: Cite journal requires |journal= (help)
  13. ^ Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 17, 2019. Retrieved January 16, 2019.
  14. ^ Université Catholique de Louvain (2014). . Archived from the original on 2008-08-11. Retrieved 2014-03-04.
  15. ^ "Cyclone Ernest kills three in Madagascar". IOL News. Agence France-Presse. January 31, 2005. Retrieved August 14, 2012.
  16. ^ "Madagascar receives cyclone aid". Afrol News. 2005-02-01. Retrieved 2012-08-14.
  17. ^ Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 17, 2019. Retrieved January 16, 2019.
  18. ^ Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 23, 2019. Retrieved January 22, 2019.
  19. ^ a b c "Monthly Global Tropical Cyclone Summary February 2005". May 17, 2005. Retrieved January 22, 2019.
  20. ^ Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 23, 2019. Retrieved January 16, 2019.
  21. ^ a b Gary Padgett (2006-12-27). "Monthly Global Tropical Cyclone Summary March 2005". Retrieved December 13, 2018.
  22. ^ Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 23, 2019. Retrieved January 22, 2019.
  23. ^ "Mauritius sea, airports reopen". News 24. March 24, 2005. Retrieved January 22, 2019.
  24. ^ a b c d e Gary Padgett (June 1, 2005). "Monthly Global Tropical Cyclone Summary April 2005". Retrieved January 22, 2019.
  25. ^ Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 23, 2019. Retrieved January 22, 2019.
  26. ^ "Tropical Cyclone Adeline" (PDF). Australian Bureau of Meteorology. Retrieved January 22, 2019.
  27. ^ a b c d Kenneth R. Knapp; Michael C. Kruk; David H. Levinson; Howard J. Diamond; Charles J. Neumann (2010). . The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data (Report). Bulletin of the American Meteorological Society. Archived from the original on January 23, 2019. Retrieved January 22, 2019.
  28. ^ Cyclone Season South-West Indian Ocean 2009 -2010 (PDF) (Report). RSMC Météo-France. p. 38. Retrieved January 22, 2019.
  29. ^ Agricultural Cost of Production Survey 2005 (PDF) (Report). Republic of Mauritius Central Statistics Office. March 2008. p. 101. Retrieved December 13, 2018.
  30. ^ a b Gary Padgett (January 27, 2005). "Monthly Tropical Cyclone Summary for September 2004". Typhoon 2000. Retrieved February 12, 2009.
  31. ^ Gary Padgett (December 7, 2004). "Monthly Tropical Cyclone Summary for August 2004". Typhoon 2000. Retrieved February 12, 2009.
  32. ^ Gary Padgett (October 24, 2004). "Monthly Tropical Cyclone Tracks for September 2004". Typhoon 2000. Retrieved February 12, 2009.
  33. ^ Gary Padgett (May 17, 2005). "Monthly Global Tropical Cyclone Tracks October 2004". Retrieved January 15, 2019.
  34. ^ (PDF). Archived from the original (PDF) on 2011-07-16. Retrieved 2023-08-06.
  35. ^ "Fact Sheet Tropical Cyclone Names" (PDF). World Meteorological Organization. July 1, 2005. p. 4. Retrieved January 22, 2019.

External links edit

  • Joint Typhoon Warning Center (JTWC) 2010-03-01 at the Wayback Machine.
  • Météo France (RSMC La Réunion).
  • RA I Tropical Cyclone Committee for the South-West Indian Ocean - Seventeenth session

2004, south, west, indian, ocean, cyclone, season, near, average, season, despite, beginning, unusually, early, august, with, formation, early, season, tropical, depression, météo, france, meteorological, office, réunion, ultimately, monitored, tropical, distu. The 2004 05 South West Indian Ocean cyclone season was a near average season despite beginning unusually early on August 30 with the formation of an early season tropical depression Meteo France s meteorological office in Reunion MFR ultimately monitored 18 tropical disturbances during the season of which 15 became tropical depressions Two storms Arola and Bento formed in November and the latter became the most intense November cyclone on record Bento attained its peak intensity at a low latitude and weakened before threatening land Tropical Cyclone Chambo was the only named storm in December In January Severe Tropical Storm Daren and Cyclone Ernest existed simultaneously The latter storm struck southern Madagascar and five days later Moderate Tropical Storm Felapi affected the same area the two storms killed 78 people and left over 32 000 people homeless At the end of January Severe Tropical Storm Gerard existed as an unnamed tropical storm for 18 hours due to discrepancies between warning centers 2004 05 South West Indian Ocean cyclone seasonSeason summary mapSeasonal boundariesFirst system formedAugust 30 2004Last system dissipatedApril 11 2005Strongest stormNameJuliet Maximum winds220 km h 140 mph 10 minute sustained Lowest pressure905 hPa mbar Seasonal statisticsTotal disturbances18 1 unofficialTotal depressions15 1 unofficialTotal storms10 1 unofficialTropical cyclones4Intense tropical cyclones3Very intense tropical cyclones1Total fatalities78 totalTotal damageUnknownRelated articles2004 05 Australian region cyclone season 2004 05 South Pacific cyclone seasonSouth West Indian Ocean tropical cyclone seasons2002 03 2003 04 2004 05 2005 06 2006 07After a series of weak tropical systems in February there were two storms in March Severe Tropical Storm Hennie brought heavy rainfall to the Mascarene Islands and Severe Tropical Storm Isang remained away from land The season s strongest storm originated in the neighboring Australian basin developing in early April near the Cocos Islands After being named Adeline by the Australian Bureau of Meteorology BoM the MFR renamed the storm Juliet once the storm crossed 90 E Juliet would reach maximum sustained winds of 220 km h 135 mph making it a very intense tropical cyclone Juliet damaged corn plantations on the island of Rodrigues before becoming an extratropical cyclone on April 11 thus ending the season Contents 1 Seasonal summary 2 Systems 2 1 Severe Tropical Storm Arola 2 2 Intense Tropical Cyclone Bento 2 3 Tropical Cyclone Chambo 2 4 Intense Tropical Cyclone Ernest 2 5 Severe Tropical Storm Daren 2 6 Moderate Tropical Storm Felapi 2 7 Severe Tropical Storm Gerard 2 8 Severe Tropical Storm Hennie 2 9 Severe Tropical Storm Isang 2 10 Very Intense Tropical Cyclone Adeline Juliet 2 11 Other storms 3 Storm names 4 Seasonal effects 5 See also 6 Notes 7 References 8 External linksSeasonal summary editMeteo France s meteorological office in Reunion MFR is the official Regional Specialized Meteorological Center for the South West Indian Ocean tracking all tropical cyclones from the east coast of Africa to 90 E 1 The agency tracked 18 tropical disturbances including one zone of disturbed weather that lasted for one advisory which was higher than normal The agency assessed that 15 disturbances reached tropical depression intensity 2 3 Ten of these weather systems intensified into named storms which was one higher than normal There were 44 days in which a named storm was active lower than the average of 53 There was an unusual period of inactivity across much of the basin from January to March typically the most active months During this time the Intertropical Convergence Zone was located farther south than usual causing any developing storms to reach their peak intensity at higher latitudes The exception was southern Madagascar which was affected by Cyclone Ernest and Tropical Storm Felapi in a five day span in late January Four of the named storms attained maximum sustained winds of at least 120 km h 75 mph the threshold for tropical cyclone intensity this was also near normal Three tropical cyclones strengthened into intense tropical cyclones including Very Intense Tropical Cyclone Juliet 2 In addition to the MFR the American based Joint Typhoon Warning Center issued warnings for cyclones in the basin as well as the entire southern hemisphere The agency did not track Tropical Storm Felapi and it estimated that a tropical depression in October attained tropical storm status 4 Systems editSevere Tropical Storm Arola edit Severe tropical storm MFR Category 1 tropical cyclone SSHWS nbsp nbsp DurationNovember 6 November 18Peak intensity110 km h 70 mph 10 min 978 hPa mbar The near equatorial trough spawned an area of convection east of Diego Garcia on November 6 which the MFR classified as a tropical disturbance The system slowly organized amid favorable conditions including low to moderate wind shear On November 8 the MFR upgraded the system to a tropical depression and later Moderate Tropical Storm Arola and the JTWC classified it as Tropical Cyclone 03S Steered by a ridge to the south Arola moved southwestward at first while quickly intensifying Late on November 8 the MFR estimated peak winds of 110 km h 70 mph making Arola a severe tropical storm Early the next day the JTWC upgraded the storm to the equivalent of a minimal hurricane estimating peak winds of 120 km h 75 mph The storm turned to a westward drift entering an area of higher wind shear and cooler waters which caused Arola to weaken On November 12 the MFR downgraded the storm to a tropical depression by which time the storm was moving southwestward again passing south of Diego Garcia The JTWC discontinued advisories the next day The MFR tracked Arola until November 18 5 6 4 7 Intense Tropical Cyclone Bento edit Intense tropical cyclone MFR Category 5 tropical cyclone SSHWS nbsp nbsp DurationNovember 19 December 3Peak intensity215 km h 130 mph 10 min 915 hPa mbar On the same day that Arola dissipated the near equatorial trough spawned another area of convection east of Diego Garcia 5 A day later the MFR classified the system as a tropical disturbance as the thunderstorms organized and consolidated amid favorable conditions On November 20 the MFR upgraded the system to Tropical Storm Bento and the JTWC initiated advisories as Tropical Cyclone 04S At first Bento drifted to the southeast but turned to the west two days later The MFR upgraded the storm to tropical cyclone status on November 22 the same day that the storm began a rapid intensification phase On November 23 the MFR estimated peak 10 minute winds of 215 km h 135 mph and the JTWC estimated peak 1 minute winds of 260 km h 160 mph equivalent to a Category 5 on the Saffir Simpson scale This made Bento among the most intense tropical cyclones in the basin within 10º of the equator only surpassed by Cyclone Fantala in April 2016 4 8 7 9 It also made Bento the strongest cyclone in the basin in the month of November surpassing Cyclone Agnielle in 1995 2 Around its time of peak intensity Bento was located far away from land about 325 km 200 mi east southeast of Diego Garcia It was also moving southwestward due to a ridge to its southeast On November 24 the cyclone began weakening due to an eyewall replacement cycle as well as the presence of drier air and increased wind shear A day later Bento turned to the southeast steered by a passing trough The MFR downgraded the cyclone to tropical storm status on November 26 but upgraded it back to tropical cyclone status a day later By late on November 27 the circulation was exposed from the convection Bento turned to the west and failed to reintensify due to cooler waters The JTWC discontinued advisories on November 29 but the MFR continued tracking the system as a tropical disturbance until December 3 when Bento was passing north of the Mascarene Islands 5 4 8 7 Tropical Cyclone Chambo edit Tropical cyclone MFR Category 3 tropical cyclone SSHWS nbsp nbsp DurationDecember 22 December 30Peak intensity155 km h 100 mph 10 min 950 hPa mbar In the middle of December the near equatorial trough spawned an area of convection to the west of Indonesia For several days the system drifted westward through an area of minimal wind shear On December 22 the MFR classified the system as Tropical Disturbance 6 to the northwest of the Cocos Islands By that time the thunderstorms were increasing and consolidating The JTWC classified the system as Tropical Cyclone 06S on December 23 On the next day the MFR upgraded the system to Moderate Tropical Storm Chambo The storm quickly intensified as it moved southwestward steered by a ridge to its southeast On December 25 the MFR upgraded Chambo to tropical cyclone status and the next day estimated peak 10 minute winds of 155 km h 95 mph The JTWC meanwhile estimated peak 1 minute winds of 195 km h 120 mph Cooler waters and stronger wind shear caused Chambo to begin weakening on December 27 By the next day the circulation became exposed from the thunderstorms and the JTWC discontinued advisories On December 30 the MFR reclassified Chambo as an extratropical cyclone The storm turned to the south and later southeast and was last mentioned by the MFR on January 2 10 11 12 Intense Tropical Cyclone Ernest edit Intense tropical cyclone MFR Category 3 tropical cyclone SSHWS nbsp nbsp DurationJanuary 16 January 23Peak intensity165 km h 105 mph 10 min 950 hPa mbar Main article Cyclone Ernest An area of convection developed west of Diego Garcia on January 16 prompting the MFR to classify it as Tropical Disturbance 8 A day later the agency briefly discontinued advisories only to resume them on January 19 as the disturbance passed north of Madagascar That day the JTWC classified the system as Tropical Cyclone 12S On January 20 the MFR upgraded the system to Tropical Storm Ernest to the east of the Comoros The storm quickly intensified and within 12 hours of being named the MFR upgraded Ernest to tropical cyclone status The cyclone turned to the south through the Mozambique Channel attaining peak winds of 165 km h 105 mph on January 22 according to the MFR The JTWC estimated peak 1 minute winds of 185 km h 115 mph On the next day Ernest turned southeast and made landfall in extreme southern Madagascar near Itampolo It quickly emerged over open waters and weakened On January 24 the MFR reclassified Ernest as an extratropical cyclone tracking it for one more day 3 4 2 13 In southern Madagascar Ernest produced high wind gusts reaching 180 km h 110 mph in Toliara The same town recorded heavy rainfall during the storm s passage totaling 237 2 mm 9 34 in over 24 hours Ernest s Madagascar impacts were followed by Tropical Storm Felapi five days later 2 Ernest killed 78 people in Madagascar 14 Collectively Ernest and Felapi damaged 5 792 buildings which left 32 191 people homeless 2 Madagascar s National Emergency Centre deployed workers to do search and rescue missions and provide water to storm victims 15 The World Food Programme provided 45 tons of rice to affected residents although persistent flooding disrupted relief work 16 Severe Tropical Storm Daren edit Severe tropical storm MFR Tropical storm SSHWS nbsp nbsp DurationJanuary 17 January 23Peak intensity95 km h 60 mph 10 min 985 hPa mbar An area of thunderstorms formed on January 13 to the northwest of the Cocos Islands in the Australian basin The system moved westward and organized gradually hampered by strong wind shear On January 17 the MFR classified the system as Tropical Disturbance 9 to the east of Diego Garcia On the next day the JTWC classified the disturbance as Tropical Cyclone 11S The nascent system intensified into Tropical Storm Daren on January 19 reaching peak 10 minute winds of 95 km h 60 mph that day according to the MFR The JTWC meanwhile estimated peak 1 minute winds of 85 km h 55 mph Steered by a ridge to its southeast Daren moved southwestward and failed to intensify further After encountering stronger wind shear Daren weakened and its circulation became exposed from the thunderstorms The JTWC discontinued advisories on January 20 On the next day the MFR downgraded Daren to a tropical depression while the system was passing north of Rodrigues The MFR continued tracking Daren until January 23 when the disturbance was passing north of Mauritius 3 17 Moderate Tropical Storm Felapi edit Moderate tropical storm MFR nbsp nbsp DurationJanuary 26 February 3Peak intensity65 km h 40 mph 10 min 995 hPa mbar Three days after Cyclone Ernest exited the Mozambique Channel an area of convection developed in the region which the MFR classified as a tropical disturbance on January 26 The system organized while moving toward western Madagascar On January 27 the MFR upgraded it to Moderate Tropical Storm Felapi estimating peak winds of 65 km h 40 mph That day Felapi moved ashore near Toliara and quickly weakened back to tropical depression status The system emerged near the southeast coast of Madagascar and turned to the northeast transitioning into a subtropical cyclone On January 31 Felapi turned to the south and re intensified to its former peak intensity as a subtropical depression The storm weakened again and accelerated to the southeast The MFR continued tracking Felapi until February 3 3 18 The JTWC did not issue advisories on the storm 3 In southern Madagascar Felapi dropped additional rainfall following Cyclone Ernest Rainfall in Morondava reached 157 2 mm 6 19 in Winds on the island reached 61 km h 38 mph inland at Ranohira 2 Severe Tropical Storm Gerard edit Severe tropical storm MFR Tropical storm SSHWS nbsp nbsp DurationJanuary 29 February 5Peak intensity110 km h 70 mph 10 min 973 hPa mbar An area of convection persisted east of Diego Garcia on January 27 The system moved west southwestward with its circulation displaced from the thunderstorms due to strong wind shear and cooler air The MFR classified the system as a tropical disturbance on January 29 and upgraded it to a tropical depression the next day only to downgrade it again to a disturbance on January 31 after nearly all thunderstorms diminished For several days the weak system drifted southwestward toward the Mascarene Islands steered by a ridge to the southeast On February 2 thunderstorm activity increased as the system passed over Rodrigues although the structure resembled a monsoon depression more commonly found in the Western Pacific Ocean Over the next day the structure became more akin to a tropical cyclone with increasing convection and an eye like feature near the center 19 2 20 On February 3 the JTWC initiated advisories on Tropical Cyclone 14S and the MFR upgraded the depression to a moderate tropical storm Ordinarily this would result in the system being named however the Mauritius Meteorological Services responsible for naming believed it had not yet attained such intensity For about 15 hours the unnamed tropical storm intensified while accelerating to the south due to a passing trough At 03 00 UTC on February 4 the Mauritius Meteorological Services named the storm Gerard Shortly thereafter the MFR estimated peak winds of 115 km h 70 mph just shy of tropical cyclone status and similar to the JTWC estimate of 110 km h 70 mph The MFR noted uncertainty in the peak winds due to the fast forward speed and small size On February 5 Gerard rapidly weakened as it transitioned into an extratropical cyclone 19 4 2 In the report to the WMO the MFR noted that for a tropical depression system of such intensity not to be named is unprecedented in the recent history of the basin 2 Severe Tropical Storm Hennie edit Severe tropical storm MFR Category 1 tropical cyclone SSHWS nbsp nbsp DurationMarch 19 March 26Peak intensity100 km h 65 mph 10 min 978 hPa mbar After a period of inactivity lasting about three weeks a tropical disturbance formed on March 19 to the west of Diego Garcia With low wind shear the system developed a broad area of rotating thunderstorms It moved southwestward steered by a ridge to the southeast The JTWC initiated advisories on the system late on March 21 as Tropical Cyclone 24S On the next day the MFR upgraded the disturbance to a tropical depression and the Mauritius Meteorological Services named the system Hennie due to the threat to the Mascarene Islands The MFR upgraded Hennie to a moderate tropical storm on March 23 and by that time the storm was moving southward On March 24 Hennie passed about 140 km 85 mi east of Mauritius That day the MFR estimated peak 10 minute winds of 100 km h 60 mph making Hennie a severe tropical storm The JTWC estimated peak 1 minute winds of 120 km h 75 mph equivalent to a minimal hurricane After passing the Mascarene Islands Hennie turned to the southeast entering an area of cooler drier air The circulation became exposed from the convection on March 26 On the next day the MFR reclassified Hennie as an extratropical cyclone and continued to track the storm for several more days as it accelerated southeastward The MFR last mentioned the remnants of Hennie on April 1 when the storm was located over the far southeastern Indian Ocean 21 4 22 The storm dropped heavy rainfall in the Mascarene Islands including a 24 hour precipitation total of 397 mm 15 6 in in the mountainous peaks of Reunion Rainfall on Mauritius reached 202 8 mm 7 98 in at Sans Souci 21 The rains caused flooding on Mauritius 2 resulting in the closure of airports and ports 23 Severe Tropical Storm Isang edit Severe tropical storm MFR Tropical storm SSHWS nbsp nbsp DurationMarch 29 April 6Peak intensity110 km h 70 mph 10 min 970 hPa mbar On March 29 an area of convection formed east southeast of Diego Garcia and consolidated around a broad developing circulation That day the MFR designated the system as Tropical Disturbance 17 For several days the system waxed and waned in organization as it drifted to the west southwest On April 3 the thunderstorms increased and organized around the center prompting the MFR to upgrade the system to Moderate Tropical Storm Isang That day the JTWC initiated advisories on Tropical Cyclone 25S located south of Diego Garcia and northeast of Rodrigues The storm moved around the ridge to its southeast intensifying slowly due to dry air in the region On April 5 Isang turned to the south east and the thunderstorms became more organized developing an eye like feature On the next day the MFR estimated peak 10 minute winds of 115 km h 70 mph and the JTWC estimated peak 1 minute winds of 100 km h 60 mph Soon after reaching peak intensity Isang encountered stronger wind shear and cold dry air which resulted in weakening The MFR re classified the storm as an extratropical cyclone on April 7 and continued tracking Isang for another day 24 25 Very Intense Tropical Cyclone Adeline Juliet edit Very intense tropical cyclone MFR Category 4 tropical cyclone SSHWS nbsp nbsp DurationApril 5 Entered basin April 11Peak intensity220 km h 140 mph 10 min 905 hPa mbar The near equatorial trough spawned a circulation in the Australian region on April 2 to the east of the Cocos Islands The BoM upgraded the system to Tropical Cyclone Adeline on April 3 while the storm was passing south of the islands Continuing westward the storm intensified further reaching the equivalent of tropical cyclone status on April 4 On the same day the JTWC classified the storm as Tropical Cyclone 26S On April 5 Adeline crossed 90 E into the South West Indian Ocean whereupon the Mauritius Meteorological Service renamed the storm Juliet The cyclone intensified further to an intense tropical cyclone on April 6 reaching 10 minute winds of 185 km h 115 mph before weakening 26 4 24 27 Cyclone Juliet began re intensifying on April 8 by which time the storm had begun moving to the west southwest On April 9 the MFR upgraded Juliet to a very intense tropical cyclone estimating peak 10 minute winds of 220 km h 135 mph 24 27 This would be the last very intense tropical cyclone until Edzani in 2010 28 The JTWC estimated slightly higher 1 minute winds of 230 km h 145 mph On April 10 Juliet turned toward the south passing about 215 km 135 mi east southeast of Rodrigues 24 27 On the island the cyclone s strong winds heavily damaged 15 corn plantations 29 After passing Rodrigues the cyclone weakened due to drier air cooler waters and higher wind shear causing the circulation to become exposed from the convection Juliet weakened below tropical cyclone status on April 12 while accelerating to the southeast On the same day the MFR reclassified the storm as extratropical The agency followed Juliet until April 16 24 27 Other storms edit nbsp Satellite image of Tropical Depression 7 nearing western MadagascarOn August 30 an area of low pressure developed near the edge of Meteo France s area of responsibility within an unseasonably active monsoonal band which coincided with the Madden Julian oscillation Tracking towards the southeast the low experienced strong deep level wind shear which kept most of the convection displaced from the center of circulation On August 31 convection managed to develop around the west and southwestern portions of the low 30 and was designated as Tropical Depression 01 31 The depression reached its peak intensity at this time with winds of 55 km h 35 mph 10 minute winds and a minimum pressure of 999 hPa mbar 32 Shortly after the depression entered Australian Bureau of Meteorology in Perth s area of responsibility The depression later intensified into a tropical cyclone and was named Phoebe 30 Toward the end of October low pressure areas developed on both sides of the equator in the west central Indian Ocean The system in the North Indian Ocean failed to develop but the Southern Hemisphere system became Tropical Disturbance 02 on October 25 Moving westward the disturbance had an organized area of thunderstorms near the center with favorable conditions provided by the subtropical ridge The MFR upgraded the disturbance to a depression on October 26 and briefly downgraded the system after the circulation became exposed only to upgrade it again to a depression the next day The JTWC initiated warnings on the system as Tropical Cyclone 02S on October 27 estimating 1 minute winds of 65 km h 40 mph That day the system passed about 370 km 230 mi north of Madagascar Wind shear in the region caused the storm to weaken again On October 29 the weak disturbance moved ashore in eastern Tanzania near Dar es Salaam dropping heavy rainfall 33 In late November the precursor low that would become Cyclone Agni in the North Indian Ocean briefly crossed the equator and entered the basin to reach approximately 0 5 S keeping its counter clockwise circulation The JTWC assessed the low as remaining in the Northern Hemisphere reaching as far south as 0 7 N Its center later curved back north and developed into a tropical cyclone north of the equator reaching the extremely low latitude of 1 5 N while tropical 34 On December 11 the MFR issued two bulletins for Subtropical Depression 05 The system formed about halfway between the southern tip of Madagascar and failed to intensify 10 On January 4 the MFR began issuing warnings on Tropical Depression 7 in the Mozambique Channel The system moved southeastward moving ashore western Madagascar between Morombe and Toliara on January 5 and quickly dissipated Later in the month the MFR issued one warning for Zone of Disturbed Weather 10 located well to the southeast of Diego Garcia 3 In February there was a series of three week disturbances Tropical Depression 13 formed on February 4 to the north of Mauritius It moved southwestward and failed to intensify beyond winds of 55 km h 35 mph The depression passed just east of Mauritius on February 6 and became extratropical two days later On the same day Tropical Disturbance 14 formed to the northwest of Mauritius For two days the system drifted westward before turning back to the east reaching a point northeast of Mauritius on February 13 The disturbance then turned to the west southwest and was tracked by the MFR until February 17 On February 24 Tropical Disturbance 15 formed east of Diego Garcia It drifted southward and intensified into a tropical depression on February 26 but dissipated two days later 19 Storm names editA tropical disturbance is named when it reaches moderate tropical storm strength If a tropical disturbance reaches moderate tropical storm status west of 55 E then the Sub regional Tropical Cyclone Advisory Centre in Madagascar assigns the appropriate name to the storm If a tropical disturbance reaches moderate tropical storm status between 55 E and 90 E then the Sub regional Tropical Cyclone Advisory Centre in Mauritius assigns the appropriate name to the storm A new annual list is used every year so no names are retired 35 Arola Bento Chambo Daren Ernest Felapi Gerard Hennie Isang Juliet Kalo unused Lilian unused Madi unused Neddy unused Ouledi unused Patricia unused Qiqita unused Ramon unused Sopani unused Tina unused Ula unused Vera unused Willem unused Xaoka unused Yelda unused Zuze unused Seasonal effects editThis table lists all of the tropical cyclones and subtropical cyclones that were monitored during the 2004 05 South West Indian Ocean cyclone season Information on their intensity duration name areas affected primarily comes from RSMC La Reunion Death and damage reports come from either press reports or the relevant national disaster management agency while the damage totals are given in 2004 USD Name Dates Peak intensity Areas affected Damage USD Deaths RefsCategory Wind speed PressureArola November 6 18 Severe tropical storm 110 70 978 Diego Garcia Rodrigues Madagascar None NoneBento November 19 December 3 Intense tropical cyclone 215 130 915 Madagascar None NoneChambo December 22 30 Tropical cyclone 155 100 950 None None NoneErnest January 16 23 Intense tropical cyclone 165 105 950 Mayotte Madagascar Unknown 78Daren January 17 23 Severe tropical storm 95 60 985 None None NoneFelapi January 26 February 3 Moderate tropical storm 65 40 995 Madagascar None NoneGerard January 29 February 5 Severe tropical storm 110 70 973 None None NoneHennie March 19 26 Severe tropical storm 100 65 978 None None NoneIsang March 29 April 6 Severe tropical storm 110 70 970 None None NoneAdeline Juliet April 5 11 Very intense tropical cyclone 220 140 905 None None NoneSeason aggregates18 systems August 30 April 11 220 km h 135 mph 905 hPa 26 72 inHg Unknown 78See also edit nbsp Tropical cyclones portalTropical cyclones in 2004 and 2005 Atlantic hurricane seasons 2004 2005 Pacific hurricane seasons 2004 2005 Pacific typhoon seasons 2004 2005 North Indian Ocean cyclone seasons 2004 2005Notes editReferences edit Philippe Caroff et al April 2011 Operational procedures of TC satellite analysis at RSMC La Reunion PDF Report World Meteorological Organization pp 4 5 Retrieved 2013 10 27 a b c d e f g h i j k RA I Tropical Cyclone Committee for the South West Indian Ocean Seventeenth Session PDF Report World Meteorological Organization 2005 Retrieved January 16 2019 a b c d e f Gary Padgett May 17 2005 Monthly Global Tropical Cyclone Summary January 2005 Retrieved January 16 2019 a b c d e f g h Annual Tropical Cyclone Report PDF Report Joint Typhoon Warning Center Retrieved January 15 2019 a b c Darwin Regional Specialised Meteorological Centre November 2004 Darwin Tropical Diagnostic Statement PDF Bureau of Meteorology 2 Archived from the original PDF on January 16 2019 Retrieved January 15 2019 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Arola 2004312S05085 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 16 2019 Retrieved January 15 2019 a b c Gary Padgett May 17 2005 Monthly Global Tropical Cyclone Summary November 2004 Retrieved January 16 2019 a b Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Bento 2004325S06078 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 16 2019 Retrieved January 15 2019 Review of the 2015 2016 and 2016 2017 Cyclone Seasons DOCX Report World Meteorological Organization Retrieved January 15 2019 a b Gary Padgett May 17 2005 Monthly Global Tropical Cyclone Summary December 2004 Retrieved January 16 2019 Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Chambo 2004357S06095 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 17 2019 Retrieved January 16 2019 Darwin Regional Specialised Meteorological Centre December 2004 Darwin Tropical Diagnostic Statement PDF Bureau of Meteorology 2 Archived from the original PDF on January 16 2019 Retrieved January 15 2019 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Ernest 2005017S09061 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 17 2019 Retrieved January 16 2019 Universite Catholique de Louvain 2014 EM DAT The OFDA CRED International Disaster Database for North America Archived from the original on 2008 08 11 Retrieved 2014 03 04 Cyclone Ernest kills three in Madagascar IOL News Agence France Presse January 31 2005 Retrieved August 14 2012 Madagascar receives cyclone aid Afrol News 2005 02 01 Retrieved 2012 08 14 Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Daren 2005015S06089 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 17 2019 Retrieved January 16 2019 Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Felapi 2005026S20040 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 23 2019 Retrieved January 22 2019 a b c Monthly Global Tropical Cyclone Summary February 2005 May 17 2005 Retrieved January 22 2019 Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Gerard 2005029S11072 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 23 2019 Retrieved January 16 2019 a b Gary Padgett 2006 12 27 Monthly Global Tropical Cyclone Summary March 2005 Retrieved December 13 2018 Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Hennie 2005079S10067 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 23 2019 Retrieved January 22 2019 Mauritius sea airports reopen News 24 March 24 2005 Retrieved January 22 2019 a b c d e Gary Padgett June 1 2005 Monthly Global Tropical Cyclone Summary April 2005 Retrieved January 22 2019 Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 2005 Isang 2005089S10085 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 23 2019 Retrieved January 22 2019 Tropical Cyclone Adeline PDF Australian Bureau of Meteorology Retrieved January 22 2019 a b c d Kenneth R Knapp Michael C Kruk David H Levinson Howard J Diamond Charles J Neumann 2010 005 Adeline Juliet 2005092S11102 The International Best Track Archive for Climate Stewardship IBTrACS Unifying tropical cyclone best track data Report Bulletin of the American Meteorological Society Archived from the original on January 23 2019 Retrieved January 22 2019 Cyclone Season South West Indian Ocean 2009 2010 PDF Report RSMC Meteo France p 38 Retrieved January 22 2019 Agricultural Cost of Production Survey 2005 PDF Report Republic of Mauritius Central Statistics Office March 2008 p 101 Retrieved December 13 2018 a b Gary Padgett January 27 2005 Monthly Tropical Cyclone Summary for September 2004 Typhoon 2000 Retrieved February 12 2009 Gary Padgett December 7 2004 Monthly Tropical Cyclone Summary for August 2004 Typhoon 2000 Retrieved February 12 2009 Gary Padgett October 24 2004 Monthly Tropical Cyclone Tracks for September 2004 Typhoon 2000 Retrieved February 12 2009 Gary Padgett May 17 2005 Monthly Global Tropical Cyclone Tracks October 2004 Retrieved January 15 2019 Wayback Machine PDF Archived from the original PDF on 2011 07 16 Retrieved 2023 08 06 Fact Sheet Tropical Cyclone Names PDF World Meteorological Organization July 1 2005 p 4 Retrieved January 22 2019 External links editJoint Typhoon Warning Center JTWC Archived 2010 03 01 at the Wayback Machine Meteo France RSMC La Reunion World Meteorological Organization 2004 05 season from Meteo France RA I Tropical Cyclone Committee for the South West Indian Ocean Seventeenth session Retrieved from https en wikipedia org w index php title 2004 05 South West Indian Ocean cyclone season amp oldid 1178151534, wikipedia, wiki, book, books, library,

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