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Typhoon Koppu

December 03, 2023

This article is about the 2015 typhoon. For other storms of the same name, see List of storms named Koppu.

Typhoon Koppu, known in the Philippines as Super Typhoon Lando, was a powerful and devastating tropical cyclone that struck Luzon in October 2015. It was the twenty-fourth named storm and the fifteenth typhoon of the annual typhoon season. Similar to Goni earlier in the year, Koppu originated from a tropical disturbance east of the Mariana Islands on October 10. Moving briskly west, the system consolidated into a tropical depression the following day and further into a tropical storm on October 13. Situated over the warm waters of the Philippine Sea, Koppu quickly deepened. The storm reached its peak intensity on October 17 with ten-minute sustained winds of 185 km/h (115 mph) according to the Japan Meteorological Agency (JMA). The Joint Typhoon Warning Center assessed Koppu to have been a Category 4-equivalent super typhoon with one-minute sustained winds of 240 km/h (150 mph). The storm subsequently made landfall at this strength near Casiguran, Philippines. Rapid weakening ensued due to interaction with the mountainous terrain of Luzon and the disheveled core of Koppu emerged over the South China Sea on October 19. Unfavorable environmental conditions inhibited reorganization and the system diminished to a tropical depression on October 21.

Typhoon Koppu (Lando)
Koppu approaching the Philippines prior to peak strength on October 17
Meteorological history
FormedOctober 12, 2015
DissipatedOctober 21, 2015
Very strong typhoon
10-minute sustained (JMA)
Highest winds185 km/h (115 mph)
Lowest pressure925 hPa (mbar); 27.32 inHg
Category 4-equivalent super typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds240 km/h (150 mph)
Lowest pressure926 hPa (mbar); 27.34 inHg
Overall effects
Fatalities62 total
Damage$948 million (2015 USD)
Areas affected
IBTrACS
Part of the 2015 Pacific typhoon season

Prior to Koppu's landfall, PAGASA raised Public Storm Warning Signals for numerous provinces; nearly 24,000 people evacuated accordingly. The storm caused tremendous structural damage in coastal provinces, with thousands of structures damaged or destroyed. Prolonged, heavy rains—peaking at 1,077.8 mm (42.43 in) in Baguio—exacerbated the storm's effects and resulted in widespread flooding. 62 people were killed across the country and more than 100,000 others were displaced. Preliminary damage totals amount to ₱14.4 billion (US$313 million).

Meteorological history edit

 
Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
  Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

A tropical disturbance formed in a monsoon trough late on October 10, over Enewetak Atoll.[1] One day later, the Japan Meteorological Agency (JMA) upgraded the low-pressure area to a tropical depression, yet the low-level circulation center was exposed owing to strong vertical wind shear.[2][3] On October 12, as the system kept consolidating with convection sheared to the west, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert;[4] half a day after, the JMA started to issue tropical cyclone warnings about the tropical depression.[5] The JTWC upgraded the system to a tropical depression early on October 13, although fragmented convective bands were wrapping tighter into a broad LLCC which remained exposed.[6] At noon, tracking westward along the southern periphery of the deep-layered subtropical ridge, the system intensified into a tropical storm and was named Koppu by the JMA.[7][8]

Early on October 14, the storm entered the Philippine Area of Responsibility and received the name Lando from PAGASA, and deepened convection finally obscured the LLCC late on the same day, shortly before being upgraded to a severe tropical storm by the JMA.[9][10][11] Under a favorable environment of low vertical wind shear and radial outflow, Koppu deepened rapidly and intensified into a typhoon in the afternoon of October 15, when a tightly curved convective band was wrapping into an eye revealed by a microwave imagery.[12][13] Intensification slowed down until an apparent but ragged eye formed one day later, as sea surface temperature was over 31 °C (88 °F) in the Philippine Sea.[14] The 35 km (22 mi) eye became sharper on October 17, prompting the JTWC upgrading Koppu to a super typhoon with one-minute maximum sustained winds at 240 km/h (150 mph) in the afternoon, equivalent to Category 4 of the Saffir–Simpson hurricane wind scale.[15] Around 01:00 PHT on October 18 (17:00 UTC on October 17), Koppu made landfall over Casiguran, Aurora in the Philippines;[16] however, the JMA then reported that Koppu reached its peak intensity with ten-minute maximum sustained winds at 185 km/h (115 mph) and the central pressure at 920 hPa (27 inHg).[17]

Frictional effects from land interaction with Luzon started to erode the typhoon rapidly after landfall, despite excellent dual outflow channels.[18] Before noon or in the afternoon on October 18, Koppu emerged into the South China Sea as a disorganized system which had begun to encounter with stronger easterly vertical wind shear.[19] Tracking northward very slowly along the western periphery of an extension of the deep-layered subtropical ridge to the east-northeast, the proximity to Luzon was inhibiting the system from consolidating, leading the JMA to downgrade Koppu to a severe tropical storm when main convection had been sheared to the west early on October 19.[20][21] Both the JTWC and then the JMA downgraded the highly unorganized system with a ragged LLCC to a tropical storm in the afternoon.[22][23] Continuing hugging the coast of Luzon on October 20, Koppu drifted northeastward and then east-northeastward due to embedded within a weak complex steering environment with a near-equatorial ridge to the south and an induced ridge between Typhoon Champi and Koppu; convective organization was also hampered by being embedded in a mid-level trough along the western periphery of the subtropical ridge.[24]

Preparations and impact edit

 
Highest PSWS raised by PAGASA across the Philippines in relation to Typhoon Koppu

PAGASA began issuing Public Storm Warning Signals (PSWS) for the Philippines starting on October 15, at which time Koppu was situated 755 km (469 mi) east of Baler, Aurora. The advised areas were initially concentrated around east-central Luzon.[25] As the typhoon intensified, the PSWS levels were raised and expanded.[26] At 09:00 UTC on October 17, PSWS #4—the second-highest level—was issued for Aurora Province as winds of 171 to 220 km/h (106 to 137 mph) were anticipated in the province within 12 hours;[27] this was expanded to include southern Isabela Province hours later.[28] Following the storm's landfall, PSWS were gradually lowered over the subsequent several days.[29] Nearly 24,000 people evacuated ahead of the typhoon's arrival while numerous schools, businesses, and government offices closed. A total of 88 flights were canceled.[30]

 
Downed trees and street flooding in Moncada, Tarlac, following Typhoon Koppu

Powerful winds caused widespread damage and disruption across Luzon. Nine provinces suffered total power outages and throughout the affected regions of Luzon, approximately 9 million people—roughly 10 percent of the entire nation—lost electricity. Aurora Province sustained a direct hit from the typhoon. Nearly every structure in Casiguran was damaged or destroyed. The nearby towns of Dinalungan and Dilasag were rendered inaccessible.[31] Torrential rains fell across much of region, with western coastal areas seeing the highest accumulations.[32] A storm total of 1,077.8 mm (42.43 in) was observed in Baguio, with 800 mm (31 in) falling in a 24-hour span.[33] Just south of Baguio at the San Roque Dam, an unconfirmed 24-hour accumulation of 1,317 mm (51.9 in), including 717 mm (28.2 in) in 12 hours, was reported. If verified, these would be the greatest 12- and 24-hour rainfall totals on record in the Philippines.[32] The heaviest rains were fairly concentrated, with Quezon City in Metro Manila to the south recording only 97.8 mm (3.85 in). Along the northwestern coast, Vigan saw 200.2 mm (7.88 in) accumulate.[33]

Approximately 1.24 million people were directly affected by the storm; at one point, 113,584 people moved to evacuation centers. Throughout the affected regions, 17,254 homes were damaged and 1,504 were destroyed. 62 people were killed, and total damage reached ₱14.4 billion (US$313 million).[34][35]

In the central Philippines, two motorboats capsized in separate incidents resulting in a collective ten fatalities.[31] Virac and Daet saw 179.4 and 152.3 mm (7.06 and 6.00 in) of rain, respectively, as Koppu passed to the north.[33]

Highest Public Storm Warning Signal edit

PSWS# Luzon Visayas Mindanao
4 Aurora, Southern portion of Isabela None None
3 Ilocos Norte, Ilocos Sur, Abra, Kalinga, Mountain Province, Rest of Isabela, La Union, Ifugao, Benguet, Nueva Vizcaya, Quirino, Pangasinan, Nueva Ecija, Zambales, Northern portion of Quezon including Polillo Islands None None
2 Metro Manila, Batanes, Babuyan Islands, Apayao, Cagayan, Tarlac, Pampanga, Bataan, Bulacan, Rizal, Rest of Quezon, Camarines Norte, Catanduanes None None
1 Cavite, Laguna, Batangas, Lubang Island, Northern portion of Oriental Mindoro, Marinduque, Camarines Sur, Albay None None

Aftermath edit

 
Flooding and sediment caused by Koppu was seen over Pampanga River and Manila Bay on October 21

The Philippines' National Disaster Risk Reduction and Management Council (NDRRMC) has provided ₱122.8 million (US$2.67 million) worth of assistance.[34] On October 18, Australia was the first foreign government to offer support to typhoon relief.[36] On 22 October Australian Foreign Minister Julie Bishop announced A$1 million (US$726,000) in support to families affected by the typhoon.[37]

A state of calamity was declared for the provinces of Aurora, Cagayan, Isabela, Nueva Ecija, Nueva Vizcaya, Tarlac, Pangasinan, Quirino, three cities namely Dagupan, Ilagan and Tuguegarao, and to nine towns specifically Arayat, Baler, Cabatuan, Calumpit, Camiling, General Nakar, Infanta, Ramos and Sugpon owing to widespread flooding.[38][39][40]

Retirement edit

See also: List of retired Pacific typhoon names

Due to the typhoon's destructive effects in the Philippines, the name Koppu was retired at the Fourth Joint Session of the ESCAP/WMO Typhoon Committee and WMO/ESCAP Panel on Tropical Cyclones during 2016. In February 2017, they chose the name Koguma to replace Koppu. The name Koguma was first used in the 2021 Pacific typhoon season.[41] PAGASA also announced that Lando will be removed from their naming lists and will never be used again. Its replacement name will be Liwayway which was first used in the 2019 Pacific typhoon season.[42][43]

See also edit

References edit

  1. ^ "Index of /tcdat/tc15/WPAC/24W.KOPPU/ir/geo/1km". US Naval Research Laboratory, Marine Meteorology. Retrieved October 18, 2015.
  2. ^ "WWJP25 RJTD 111800". Japan Meteorological Agency. Archived from the original on October 12, 2015. Retrieved October 18, 2015.
  3. ^ "Significant Tropical Weather Advisory for the Western and South Pacific Oceans Reissued 111830Z-120600Z Oct 2015". Joint Typhoon Warning Center. Archived from the original on October 12, 2015. Retrieved October 18, 2015.
  4. ^ "Tropical Cyclone Formation Alert". Joint Typhoon Warning Center. Archived from the original on October 12, 2015. Retrieved October 18, 2015.
  5. ^ "RSMC Tropical Cyclone Advisory 121800". Japan Meteorological Agency. Archived from the original on October 13, 2015. Retrieved October 18, 2015.
  6. ^ "Prognostic Reasoning for Tropical Depression 24W (Twentyfour) Warning Nr 01". Joint Typhoon Warning Center. Archived from the original on October 13, 2015. Retrieved October 18, 2015.
  7. ^ "RSMC Tropical Cyclone Advisory 131200". Japan Meteorological Agency. Archived from the original on October 13, 2015. Retrieved October 18, 2015.
  8. ^ "Prognostic Reasoning for Tropical Storm 24W (Koppu) Warning Nr 03". Joint Typhoon Warning Center. Archived from the original on October 13, 2015. Retrieved October 18, 2015.
  9. ^ . PAGASA. Archived from the original on October 18, 2015. Retrieved October 18, 2015.
  10. ^ "Prognostic Reasoning for Tropical Storm 24W (Koppu) Warning Nr 09". Joint Typhoon Warning Center. Archived from the original on October 15, 2015. Retrieved October 18, 2015.
  11. ^ "RSMC Tropical Cyclone Advisory 150600". Japan Meteorological Agency. Archived from the original on October 15, 2015. Retrieved October 18, 2015.
  12. ^ "RSMC Tropical Cyclone Advisory 151500". Japan Meteorological Agency. Archived from the original on October 16, 2015. Retrieved October 18, 2015.
  13. ^ "Prognostic Reasoning for Typhoon 24W (Koppu) Warning Nr 12". Joint Typhoon Warning Center. Archived from the original on October 16, 2015. Retrieved October 18, 2015.
  14. ^ "Prognostic Reasoning for Typhoon 24W (Koppu) Warning Nr 17". Joint Typhoon Warning Center. Archived from the original on October 17, 2015. Retrieved October 18, 2015.
  15. ^ "Prognostic Reasoning for Super Typhoon 24W (Koppu) Warning Nr 19". Joint Typhoon Warning Center. Archived from the original on October 17, 2015. Retrieved October 18, 2015.
  16. ^ "TC Update: as of 01AM today 18Oct2015, TY #LandoPH has made landfall over Casiguran, Aurora (16.2°N, 122.2°E)". Facebook. PAGASA. Retrieved October 18, 2015.
  17. ^ "RSMC Tropical Cyclone Advisory 171800". Japan Meteorological Agency. Archived from the original on October 18, 2015. Retrieved October 21, 2015.
  18. ^ "Prognostic Reasoning for Typhoon 24W (Koppu) Warning Nr 21". Joint Typhoon Warning Center. Archived from the original on October 18, 2015. Retrieved October 21, 2015.
  19. ^ "Prognostic Reasoning for Typhoon 24W (Koppu) Warning Nr 23". Joint Typhoon Warning Center. Archived from the original on October 18, 2015. Retrieved October 21, 2015.
  20. ^ "Prognostic Reasoning for Typhoon 24W (Koppu) Warning Nr 25". Joint Typhoon Warning Center. Archived from the original on October 19, 2015. Retrieved October 21, 2015.
  21. ^ "RSMC Tropical Cyclone Advisory 190000". Japan Meteorological Agency. Archived from the original on October 19, 2015. Retrieved October 21, 2015.
  22. ^ "Prognostic Reasoning for Tropical Storm 24W (Koppu) Warning Nr 27". Joint Typhoon Warning Center. Archived from the original on October 19, 2015. Retrieved October 21, 2015.
  23. ^ "RSMC Tropical Cyclone Advisory 191800". Japan Meteorological Agency. Archived from the original on October 20, 2015. Retrieved October 21, 2015.
  24. ^ "Prognostic Reasoning for Tropical Storm 24W (Koppu) Warning Nr 30". Joint Typhoon Warning Center. Archived from the original on October 20, 2015. Retrieved October 21, 2015.
  25. ^ Severe Weather Bulletin No. 04 re Severe Tropical Storm "Lando" (PDF). Philippine Atmospheric, Geophysical and Astronomical Services Administration (Report). National Disaster Risk Reduction and Management Council. October 15, 2015. Retrieved October 21, 2015.
  26. ^ Severe Weather Bulletin No. 08 re Typhoon "Lando" (PDF). Philippine Atmospheric, Geophysical and Astronomical Services Administration (Report). National Disaster Risk Reduction and Management Council. October 16, 2015. Retrieved October 21, 2015.
  27. ^ Severe Weather Bulletin No. 11 re Typhoon "Lando" (PDF). Philippine Atmospheric, Geophysical and Astronomical Services Administration (Report). National Disaster Risk Reduction and Management Council. October 17, 2015. Retrieved October 21, 2015.
  28. ^ Severe Weather Bulletin No. 12 re Typhoon "Lando" (PDF). Philippine Atmospheric, Geophysical and Astronomical Services Administration (Report). National Disaster Risk Reduction and Management Council. October 17, 2015. Retrieved October 21, 2015.
  29. ^ Severe Weather Bulletin No. 23 re Tropical Storm "Lando" (PDF). Philippine Atmospheric, Geophysical and Astronomical Services Administration (Report). National Disaster Risk Reduction and Management Council. October 20, 2015. Retrieved October 21, 2015.
  30. ^ SitRep No. 12 re Preparedness Measures and Effects of Typhoon "Landee" (Koppu) (PDF) (Report). National Disaster Risk Reduction and Management Council. October 21, 2015. Retrieved October 21, 2015.
  31. ^ a b Sean Breslin (October 21, 2015). "Typhoon Koppu Death Toll Rises; More Flooding Ahead for Philippines, Government Warns". The Weather Channel. Retrieved October 21, 2015.
  32. ^ a b Bob Henson and Jeff Masters (October 20, 2015). "Koppu Pulling Away from Philippines; TD 20-E May Threaten Mexico". Weather Underground. Retrieved October 20, 2015.
  33. ^ a b c Nick Wiltgen (October 21, 2015). "Former Super Typhoon Koppu (Lando) Weakens to Remnant Low over Northern Philippines". The Weather Channel. Retrieved October 21, 2015.
  34. ^ a b "FINAL_REPORT_re_Preparedness_Measures_and_Effects_of_Typhoon_LANDO" (PDF). July 5, 2016.
  35. ^ October 2015 Global Catastrophe Recap
  36. ^ "Bill Tweddell on Twitter". Twitter. Retrieved 2015-10-18.
  37. ^ "Australia supports Philippines after Typhoon Koppu". foreignminister.gov.au.
  38. ^ Eva Visperas (October 22, 2015). "Pangasinan in state of calamity". The Philippine Star. Dagupan, Philippines. Retrieved October 22, 2015.
  39. ^ Freddie G. Lazaro (October 21, 2015). "Cagayan placed under state of calamity". Manila Bulletin. Tuguegarao, Philippines. Retrieved October 22, 2015.
  40. ^ Michael Bueva (October 23, 2015). "Typhoon Lando: 19 areas under state of calamity". Manila, Philippines. Retrieved October 24, 2015.
  41. ^ http://www.typhooncommittee.org/48th/docs/final/TC48FINAL.pdf[bare URL PDF]
  42. ^ Philippine News Agency (October 22, 2015). "PAGASA plans to decommission 'Lando' from list of typhoon names". Manila Bulletin. Retrieved October 22, 2015.
  43. ^ Helen Flores (October 29, 2015). "Pagasa delists Lando". Philippine Star. Retrieved October 29, 2015.

External links edit

 
Wikimedia Commons has media related to Typhoon Koppu (2015).
  • JMA General Information of Typhoon Koppu (1524) from Digital Typhoon
  • JMA Best Track Data of Typhoon Koppu (1524) (in Japanese)
  • 24W.KOPPU from the U.S. Naval Research Laboratory

December 03, 2023
typhoon, koppu, this, article, about, 2015, typhoon, other, storms, same, name, list, storms, named, koppu, known, philippines, super, typhoon, lando, powerful, devastating, tropical, cyclone, that, struck, luzon, october, 2015, twenty, fourth, named, storm, f. This article is about the 2015 typhoon For other storms of the same name see List of storms named Koppu Typhoon Koppu known in the Philippines as Super Typhoon Lando was a powerful and devastating tropical cyclone that struck Luzon in October 2015 It was the twenty fourth named storm and the fifteenth typhoon of the annual typhoon season Similar to Goni earlier in the year Koppu originated from a tropical disturbance east of the Mariana Islands on October 10 Moving briskly west the system consolidated into a tropical depression the following day and further into a tropical storm on October 13 Situated over the warm waters of the Philippine Sea Koppu quickly deepened The storm reached its peak intensity on October 17 with ten minute sustained winds of 185 km h 115 mph according to the Japan Meteorological Agency JMA The Joint Typhoon Warning Center assessed Koppu to have been a Category 4 equivalent super typhoon with one minute sustained winds of 240 km h 150 mph The storm subsequently made landfall at this strength near Casiguran Philippines Rapid weakening ensued due to interaction with the mountainous terrain of Luzon and the disheveled core of Koppu emerged over the South China Sea on October 19 Unfavorable environmental conditions inhibited reorganization and the system diminished to a tropical depression on October 21 Typhoon Koppu Lando Koppu approaching the Philippines prior to peak strength on October 17Meteorological historyFormedOctober 12 2015DissipatedOctober 21 2015Very strong typhoon10 minute sustained JMA Highest winds185 km h 115 mph Lowest pressure925 hPa mbar 27 32 inHgCategory 4 equivalent super typhoon1 minute sustained SSHWS JTWC Highest winds240 km h 150 mph Lowest pressure926 hPa mbar 27 34 inHgOverall effectsFatalities62 totalDamage 948 million 2015 USD Areas affectedNorthern Mariana IslandsPhilippinesTaiwanRyukyu IslandsIBTrACSPart of the 2015 Pacific typhoon seasonPrior to Koppu s landfall PAGASA raised Public Storm Warning Signals for numerous provinces nearly 24 000 people evacuated accordingly The storm caused tremendous structural damage in coastal provinces with thousands of structures damaged or destroyed Prolonged heavy rains peaking at 1 077 8 mm 42 43 in in Baguio exacerbated the storm s effects and resulted in widespread flooding 62 people were killed across the country and more than 100 000 others were displaced Preliminary damage totals amount to 14 4 billion US 313 million Contents 1 Meteorological history 2 Preparations and impact 2 1 Highest Public Storm Warning Signal 3 Aftermath 3 1 Retirement 4 See also 5 References 6 External linksMeteorological history edit nbsp Map plotting the storm s track and intensity according to the Saffir Simpson scaleMap keySaffir Simpson scale Tropical depression 38 mph 62 km h Tropical storm 39 73 mph 63 118 km h Category 1 74 95 mph 119 153 km h Category 2 96 110 mph 154 177 km h Category 3 111 129 mph 178 208 km h Category 4 130 156 mph 209 251 km h Category 5 157 mph 252 km h Unknown Storm type nbsp Tropical cyclone nbsp Subtropical cyclone nbsp Extratropical cyclone remnant low tropical disturbance or monsoon depressionA tropical disturbance formed in a monsoon trough late on October 10 over Enewetak Atoll 1 One day later the Japan Meteorological Agency JMA upgraded the low pressure area to a tropical depression yet the low level circulation center was exposed owing to strong vertical wind shear 2 3 On October 12 as the system kept consolidating with convection sheared to the west the Joint Typhoon Warning Center JTWC issued a Tropical Cyclone Formation Alert 4 half a day after the JMA started to issue tropical cyclone warnings about the tropical depression 5 The JTWC upgraded the system to a tropical depression early on October 13 although fragmented convective bands were wrapping tighter into a broad LLCC which remained exposed 6 At noon tracking westward along the southern periphery of the deep layered subtropical ridge the system intensified into a tropical storm and was named Koppu by the JMA 7 8 Early on October 14 the storm entered the Philippine Area of Responsibility and received the name Lando from PAGASA and deepened convection finally obscured the LLCC late on the same day shortly before being upgraded to a severe tropical storm by the JMA 9 10 11 Under a favorable environment of low vertical wind shear and radial outflow Koppu deepened rapidly and intensified into a typhoon in the afternoon of October 15 when a tightly curved convective band was wrapping into an eye revealed by a microwave imagery 12 13 Intensification slowed down until an apparent but ragged eye formed one day later as sea surface temperature was over 31 C 88 F in the Philippine Sea 14 The 35 km 22 mi eye became sharper on October 17 prompting the JTWC upgrading Koppu to a super typhoon with one minute maximum sustained winds at 240 km h 150 mph in the afternoon equivalent to Category 4 of the Saffir Simpson hurricane wind scale 15 Around 01 00 PHT on October 18 17 00 UTC on October 17 Koppu made landfall over Casiguran Aurora in the Philippines 16 however the JMA then reported that Koppu reached its peak intensity with ten minute maximum sustained winds at 185 km h 115 mph and the central pressure at 920 hPa 27 inHg 17 Frictional effects from land interaction with Luzon started to erode the typhoon rapidly after landfall despite excellent dual outflow channels 18 Before noon or in the afternoon on October 18 Koppu emerged into the South China Sea as a disorganized system which had begun to encounter with stronger easterly vertical wind shear 19 Tracking northward very slowly along the western periphery of an extension of the deep layered subtropical ridge to the east northeast the proximity to Luzon was inhibiting the system from consolidating leading the JMA to downgrade Koppu to a severe tropical storm when main convection had been sheared to the west early on October 19 20 21 Both the JTWC and then the JMA downgraded the highly unorganized system with a ragged LLCC to a tropical storm in the afternoon 22 23 Continuing hugging the coast of Luzon on October 20 Koppu drifted northeastward and then east northeastward due to embedded within a weak complex steering environment with a near equatorial ridge to the south and an induced ridge between Typhoon Champi and Koppu convective organization was also hampered by being embedded in a mid level trough along the western periphery of the subtropical ridge 24 Preparations and impact edit nbsp Highest PSWS raised by PAGASA across the Philippines in relation to Typhoon KoppuPAGASA began issuing Public Storm Warning Signals PSWS for the Philippines starting on October 15 at which time Koppu was situated 755 km 469 mi east of Baler Aurora The advised areas were initially concentrated around east central Luzon 25 As the typhoon intensified the PSWS levels were raised and expanded 26 At 09 00 UTC on October 17 PSWS 4 the second highest level was issued for Aurora Province as winds of 171 to 220 km h 106 to 137 mph were anticipated in the province within 12 hours 27 this was expanded to include southern Isabela Province hours later 28 Following the storm s landfall PSWS were gradually lowered over the subsequent several days 29 Nearly 24 000 people evacuated ahead of the typhoon s arrival while numerous schools businesses and government offices closed A total of 88 flights were canceled 30 nbsp Downed trees and street flooding in Moncada Tarlac following Typhoon KoppuPowerful winds caused widespread damage and disruption across Luzon Nine provinces suffered total power outages and throughout the affected regions of Luzon approximately 9 million people roughly 10 percent of the entire nation lost electricity Aurora Province sustained a direct hit from the typhoon Nearly every structure in Casiguran was damaged or destroyed The nearby towns of Dinalungan and Dilasag were rendered inaccessible 31 Torrential rains fell across much of region with western coastal areas seeing the highest accumulations 32 A storm total of 1 077 8 mm 42 43 in was observed in Baguio with 800 mm 31 in falling in a 24 hour span 33 Just south of Baguio at the San Roque Dam an unconfirmed 24 hour accumulation of 1 317 mm 51 9 in including 717 mm 28 2 in in 12 hours was reported If verified these would be the greatest 12 and 24 hour rainfall totals on record in the Philippines 32 The heaviest rains were fairly concentrated with Quezon City in Metro Manila to the south recording only 97 8 mm 3 85 in Along the northwestern coast Vigan saw 200 2 mm 7 88 in accumulate 33 Approximately 1 24 million people were directly affected by the storm at one point 113 584 people moved to evacuation centers Throughout the affected regions 17 254 homes were damaged and 1 504 were destroyed 62 people were killed and total damage reached 14 4 billion US 313 million 34 35 In the central Philippines two motorboats capsized in separate incidents resulting in a collective ten fatalities 31 Virac and Daet saw 179 4 and 152 3 mm 7 06 and 6 00 in of rain respectively as Koppu passed to the north 33 Highest Public Storm Warning Signal edit PSWS Luzon Visayas Mindanao4 Aurora Southern portion of Isabela None None3 Ilocos Norte Ilocos Sur Abra Kalinga Mountain Province Rest of Isabela La Union Ifugao Benguet Nueva Vizcaya Quirino Pangasinan Nueva Ecija Zambales Northern portion of Quezon including Polillo Islands None None2 Metro Manila Batanes Babuyan Islands Apayao Cagayan Tarlac Pampanga Bataan Bulacan Rizal Rest of Quezon Camarines Norte Catanduanes None None1 Cavite Laguna Batangas Lubang Island Northern portion of Oriental Mindoro Marinduque Camarines Sur Albay None NoneAftermath edit nbsp Flooding and sediment caused by Koppu was seen over Pampanga River and Manila Bay on October 21The Philippines National Disaster Risk Reduction and Management Council NDRRMC has provided 122 8 million US 2 67 million worth of assistance 34 On October 18 Australia was the first foreign government to offer support to typhoon relief 36 On 22 October Australian Foreign Minister Julie Bishop announced A 1 million US 726 000 in support to families affected by the typhoon 37 A state of calamity was declared for the provinces of Aurora Cagayan Isabela Nueva Ecija Nueva Vizcaya Tarlac Pangasinan Quirino three cities namely Dagupan Ilagan and Tuguegarao and to nine towns specifically Arayat Baler Cabatuan Calumpit Camiling General Nakar Infanta Ramos and Sugpon owing to widespread flooding 38 39 40 Retirement edit See also List of retired Pacific typhoon names Due to the typhoon s destructive effects in the Philippines the name Koppu was retired at the Fourth Joint Session of the ESCAP WMO Typhoon Committee and WMO ESCAP Panel on Tropical Cyclones during 2016 In February 2017 they chose the name Koguma to replace Koppu The name Koguma was first used in the 2021 Pacific typhoon season 41 PAGASA also announced that Lando will be removed from their naming lists and will never be used again Its replacement name will be Liwayway which was first used in the 2019 Pacific typhoon season 42 43 See also edit nbsp Tropical cyclones portalTropical cyclones in 2015 Typhoon Nancy 1982 Typhoon Nanmadol 2004 Typhoon Nari 2013 Typhoon Hagupit 2014 Typhoon Vamco 2020 References edit Index of tcdat tc15 WPAC 24W KOPPU ir geo 1km US Naval Research Laboratory Marine Meteorology Retrieved October 18 2015 WWJP25 RJTD 111800 Japan Meteorological Agency Archived from the original on October 12 2015 Retrieved October 18 2015 Significant Tropical Weather Advisory for the Western and South Pacific Oceans Reissued 111830Z 120600Z Oct 2015 Joint Typhoon Warning Center Archived from the original on October 12 2015 Retrieved October 18 2015 Tropical Cyclone Formation Alert Joint Typhoon Warning Center Archived from the original on October 12 2015 Retrieved October 18 2015 RSMC Tropical Cyclone Advisory 121800 Japan Meteorological Agency Archived from the original on October 13 2015 Retrieved October 18 2015 Prognostic Reasoning for Tropical Depression 24W Twentyfour Warning Nr 01 Joint Typhoon Warning Center Archived from the original on October 13 2015 Retrieved October 18 2015 RSMC Tropical Cyclone Advisory 131200 Japan Meteorological Agency Archived from the original on October 13 2015 Retrieved October 18 2015 Prognostic Reasoning for Tropical Storm 24W Koppu Warning Nr 03 Joint Typhoon Warning Center Archived from the original on October 13 2015 Retrieved October 18 2015 Tropical Cyclone Alert Tropical Storm Lando Severe Weather Bulletin 1 PAGASA Archived from the original on October 18 2015 Retrieved October 18 2015 Prognostic Reasoning for Tropical Storm 24W Koppu Warning Nr 09 Joint Typhoon Warning Center Archived from the original on October 15 2015 Retrieved October 18 2015 RSMC Tropical Cyclone Advisory 150600 Japan Meteorological Agency Archived from the original on October 15 2015 Retrieved October 18 2015 RSMC Tropical Cyclone Advisory 151500 Japan Meteorological Agency Archived from the original on October 16 2015 Retrieved October 18 2015 Prognostic Reasoning for Typhoon 24W Koppu Warning Nr 12 Joint Typhoon Warning Center Archived from the original on October 16 2015 Retrieved October 18 2015 Prognostic Reasoning for Typhoon 24W Koppu Warning Nr 17 Joint Typhoon Warning Center Archived from the original on October 17 2015 Retrieved October 18 2015 Prognostic Reasoning for Super Typhoon 24W Koppu Warning Nr 19 Joint Typhoon Warning Center Archived from the original on October 17 2015 Retrieved October 18 2015 TC Update as of 01AM today 18Oct2015 TY LandoPH has made landfall over Casiguran Aurora 16 2 N 122 2 E Facebook PAGASA Retrieved October 18 2015 RSMC Tropical Cyclone Advisory 171800 Japan Meteorological Agency Archived from the original on October 18 2015 Retrieved October 21 2015 Prognostic Reasoning for Typhoon 24W Koppu Warning Nr 21 Joint Typhoon Warning Center Archived from the original on October 18 2015 Retrieved October 21 2015 Prognostic Reasoning for Typhoon 24W Koppu Warning Nr 23 Joint Typhoon Warning Center Archived from the original on October 18 2015 Retrieved October 21 2015 Prognostic Reasoning for Typhoon 24W Koppu Warning Nr 25 Joint Typhoon Warning Center Archived from the original on October 19 2015 Retrieved October 21 2015 RSMC Tropical Cyclone Advisory 190000 Japan Meteorological Agency Archived from the original on October 19 2015 Retrieved October 21 2015 Prognostic Reasoning for Tropical Storm 24W Koppu Warning Nr 27 Joint Typhoon Warning Center Archived from the original on October 19 2015 Retrieved October 21 2015 RSMC Tropical Cyclone Advisory 191800 Japan Meteorological Agency Archived from the original on October 20 2015 Retrieved October 21 2015 Prognostic Reasoning for Tropical Storm 24W Koppu Warning Nr 30 Joint Typhoon Warning Center Archived from the original on October 20 2015 Retrieved October 21 2015 Severe Weather Bulletin No 04 re Severe Tropical Storm Lando PDF Philippine Atmospheric Geophysical and Astronomical Services Administration Report National Disaster Risk Reduction and Management Council October 15 2015 Retrieved October 21 2015 Severe Weather Bulletin No 08 re Typhoon Lando PDF Philippine Atmospheric Geophysical and Astronomical Services Administration Report National Disaster Risk Reduction and Management Council October 16 2015 Retrieved October 21 2015 Severe Weather Bulletin No 11 re Typhoon Lando PDF Philippine Atmospheric Geophysical and Astronomical Services Administration Report National Disaster Risk Reduction and Management Council October 17 2015 Retrieved October 21 2015 Severe Weather Bulletin No 12 re Typhoon Lando PDF Philippine Atmospheric Geophysical and Astronomical Services Administration Report National Disaster Risk Reduction and Management Council October 17 2015 Retrieved October 21 2015 Severe Weather Bulletin No 23 re Tropical Storm Lando PDF Philippine Atmospheric Geophysical and Astronomical Services Administration Report National Disaster Risk Reduction and Management Council October 20 2015 Retrieved October 21 2015 SitRep No 12 re Preparedness Measures and Effects of Typhoon Landee Koppu PDF Report National Disaster Risk Reduction and Management Council October 21 2015 Retrieved October 21 2015 a b Sean Breslin October 21 2015 Typhoon Koppu Death Toll Rises More Flooding Ahead for Philippines Government Warns The Weather Channel Retrieved October 21 2015 a b Bob Henson and Jeff Masters October 20 2015 Koppu Pulling Away from Philippines TD 20 E May Threaten Mexico Weather Underground Retrieved October 20 2015 a b c Nick Wiltgen October 21 2015 Former Super Typhoon Koppu Lando Weakens to Remnant Low over Northern Philippines The Weather Channel Retrieved October 21 2015 a b FINAL REPORT re Preparedness Measures and Effects of Typhoon LANDO PDF July 5 2016 October 2015 Global Catastrophe Recap Bill Tweddell on Twitter Twitter Retrieved 2015 10 18 Australia supports Philippines after Typhoon Koppu foreignminister gov au Eva Visperas October 22 2015 Pangasinan in state of calamity The Philippine Star Dagupan Philippines Retrieved October 22 2015 Freddie G Lazaro October 21 2015 Cagayan placed under state of calamity Manila Bulletin Tuguegarao Philippines Retrieved October 22 2015 Michael Bueva October 23 2015 Typhoon Lando 19 areas under state of calamity Manila Philippines Retrieved October 24 2015 http www typhooncommittee org 48th docs final TC48FINAL pdf bare URL PDF Philippine News Agency October 22 2015 PAGASA plans to decommission Lando from list of typhoon names Manila Bulletin Retrieved October 22 2015 Helen Flores October 29 2015 Pagasa delists Lando Philippine Star Retrieved October 29 2015 External links edit nbsp Wikimedia Commons has media related to Typhoon Koppu 2015 JMA General Information of Typhoon Koppu 1524 from Digital Typhoon JMA Best Track Data of Typhoon Koppu 1524 in Japanese 24W KOPPU from the U S Naval Research Laboratory Retrieved from https en wikipedia org w index php title Typhoon Koppu amp oldid 1172296965, wikipedia, wiki, book, books, library,

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