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Typhoon Usagi (2024)

From Wikipedia, the free encyclopedia
For other storms of the same name, see List of storms named Usagi and List of storms named Ofel.
Typhoon Usagi (Ofel)
Typhoon Usagi nearing landfall at peak intensity early on November 14
Meteorological history
FormedNovember 9, 2024
Very strong typhoon
10-minute sustained (JMA)
Highest winds175 km/h (110 mph)
Lowest pressure940 hPa (mbar); 27.76 inHg
Category 4-equivalent super typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds240 km/h (150 mph)
Lowest pressure915 hPa (mbar); 27.02 inHg
Overall effects
InjuriesNone
DamageNone
Areas affectedPhilippines
Part of the 2024 Pacific typhoon season

Typhoon Usagi, known in the Philippines as Super Typhoon Ofel, is a currently active tropical cyclone nearing landfall in the Philippines. The tropical disturbance, which was initially spotted south of the Marianas on November 9, is currently forecast to become the fifth tropical cyclone to affect the Philippines within a month, closely following the heels of Typhoon Toraji and occurring just a few weeks after Tropical Storm Trami and Typhoons Kong-rey and Yinxing.

Meteorological history

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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
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

Typhoon Usagi emerged from an area of convection 494 km (307 mi) east of Chuuk, with satellite imagery showing a broad area of persistent convection that began to consolidate on November 8.[1] At 12:00 UTC the following day, the JMA classified the system as a tropical depression, citing a favorable environment for development, with low to moderate vertical wind shear, moderate divergence aloft, and warm sea surface temperatures.[2][3] By 13:00 UTC on November 10, the United States Joint Typhoon Warning Center (JTWC) issued a tropical cyclone formation alert, citing increasing curved convective banding around the periphery and convection building over the center of the system, indicating an intensifying tropical system.[4] The next day, the JTWC designated the system as 27W, as it developed at the southeast end of an active zone extending from the Philippine Sea off the northeast coast of Luzon.[5] As it moved westward along the southern periphery of a mid-level subtropical high, the system exhibited formative convective banding wrapping cyclonically around the northern and western quadrants, signaling intensification,[6] and at 18:00 UTC on the same day, the JMA upgraded the system to a tropical storm and named it Usagi;[7] it then moved into the Philippine Area of Responsibility, where PAGASA named it Ofel.[8] Early the next day, the JMA upgraded the system to a severe tropical storm, as improved convective banding wrapped around the western periphery.[9] A few hours later, the JTWC upgraded the storm to a Category 1 typhoon.[10] Soon after, it rapidly intensified into a Category 4 strength typhoon.[11]

Preparations and impact

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Beginning November 12, PAGASA issued Tropical Cyclone Wind Signal No. 1 for Cagayan, the Babuyan Islands and parts of Apayao and Isabela.[12] The next day, Signal No. 2 was raised over Cagayan (including Babuyan Islands) and parts of Isabela and Apayao, while Signal No. 1 was raised in Abra, Batanes, Ifugao, Ilocos Norte, Kalinga, Mountain Province, Quirino and parts of Aurora and Nueva Vizcaya.[13] On November 12, Signal No. 3 was raised in northeastern Cagayan, while Signal No. 1 was extended to parts of Ilocos Sur.[14] PAGASA also warned of storm surges and torrential rainfall affecting northern Luzon and Aurora.[15]

The DSWD said that it had spent ₱1 billion (US$20.3 million) in funds to respond to Usagi and previous storms Tropical Storm Trami (Kristine), Typhoon Kong-rey (Leon), Yinxing (Marce) and Toraji (Nika).[16] Two spillways in the Magat Dam were left open as a precaution.[17] Authorities advised people evacuated due to previous typhoons Yinxing (Marce) and Toraji (Nika) not to return home.[18] The DILG advised officials in the Ilocos Region, Cagayan Valley, and Cordillera Administrative Region to prepare resources for the storm.[19] Evacuations were also ordered in Cagayan,[20] where a red alert status was retained.[21]

See also

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References

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  1. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 01Z 8 November 2024 (Report). United States Joint Typhoon Warning Center. 8 November 2024. Archived from the original on November 8, 2024. Retrieved 8 November 2024.
  2. ^ Warning and Summary 091200 (Report). Tokyo, Japan: Japan Meteorological Agency. November 9, 2024. Archived from the original on November 9, 2024. Retrieved November 9, 2024.
  3. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 03Z 9 November 2024 (Report). United States Joint Typhoon Warning Center. 9 November 2024. Archived from the original on November 9, 2024. Retrieved 9 November 2024.
  4. ^ Tropical Cyclone Formation Alert (Invest 94W) (Report). United States Joint Typhoon Warning Center. 10 November 2024. Archived from the original on November 10, 2024. Retrieved 10 November 2024.
  5. ^ Prognostic Reasoning for Tropical Depression 27W (Twenty-Seven) Warning No. 1 (Report). United States Joint Typhoon Warning Center. 11 November 2024. Retrieved 11 November 2024.
  6. ^ Prognostic Reasoning for Tropical Storm 27W (Twenty-Seven) Warning No. 3 (Report). United States Joint Typhoon Warning Center. 11 November 2024. Retrieved 11 November 2024.
  7. ^ Prognostic Reasoning No. 8 for TS Usagi (2425) (Report). Tokyo, Japan: Japan Meteorological Agency. November 4, 2024. Archived from the original on November 11, 2024. Retrieved November 11, 2024.
  8. ^ "Tropical Cyclone Bulletin #1 for Tropical Storm 'Ofel' (Usagi)" (PDF). PAGASA. 12 November 2024. Retrieved 12 November 2024.
  9. ^ Tropical Cyclone Advisory for STS Usagi (2423) (Report). Tokyo, Japan: Japan Meteorological Agency. November 12, 2024. Archived from the original on November 12, 2024. Retrieved November 12, 2024.
  10. ^ "SUBJ/PROGNOSTIC REASONING FOR TYPHOON 27W (USAGI) WARNING NR 009//". JTWC. November 13, 2024. Retrieved November 13, 2024.
  11. ^ "SUBJ/PROGNOSTIC REASONING FOR TYPHOON 27W (USAGI) WARNING NR 011//". JTWC. November 13, 2024. Retrieved November 13, 2024.
  12. ^ "Tropical Cyclone Bulletin #4 for Severe Tropical Storm 'Ofel'" (PDF). PAGASA. 12 November 2024. Retrieved 12 November 2024.
  13. ^ "Tropical Cyclone Bulletin #7 for Typhoon 'Ofel' (Usagi)" (PDF). PAGASA. 13 November 2024. Retrieved 13 November 2024.
  14. ^ "Tropical Cyclone Bulletin #9 for Typhoon 'Ofel' (Usagi)" (PDF). PAGASA. 13 November 2024. Retrieved 13 November 2024.
  15. ^ "Cagayan, Isabela to see torrential rain as Typhoon Ofel strengthens". Rappler. Retrieved November 13, 2024.
  16. ^ "DSWD: 5 last cyclones depleted P1B quick response fund". GMA News. Retrieved November 13, 2024.
  17. ^ "Still recovering from Nika, Isabela braces for Typhoon Ofel". GMA News. Retrieved November 13, 2024.
  18. ^ "Typhoon Nika evacuees in Cordillera told to stay put ahead of Ofel". ABS-CBN. Retrieved November 12, 2024.
  19. ^ "DILG asks northern Luzon LGUs to prepare resources for Ofel". GMA News. Retrieved November 12, 2024.
  20. ^ "Evacuations, call for aid as Typhoon Ofel approaches Philippines". ABS-CBN. Retrieved November 13, 2024.
  21. ^ "Epekto ng Bagyong Ofel aasahan na sa Isabela at Cagayan". Bombo Radyo (in Filipino). Retrieved November 13, 2024.
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