Typhoon Tokage

Last updated
  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
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

From Typhoon Meari and Ma-on, the Intertropical Convergence Zone became active since September 28. A large area of convection persisted on October 10. On October 12, the area of convection separated into two systems, with the other one becoming Typhoon Nock-ten, which existed 480 miles east-southeast of Guam within the ITCZ. The system developed into Tropical Depression 27W at late that day, moving in a west-northwesterly at 15 kn about 200 miles east of Guam. On the October 13, the system developed into a tropical storm, and was named Tokage, subsequently moving very close to the islands of Rota and Guam. Typhoon intensity was achieved early on October 14 when centered 970 miles southeast of Okinawa. Later that day, Tokage briefly turned to the west-southwest. The storm's path curved back to a northwesterly heading by the October 15. The storm curled towards the north as a major shortwave over weakened the subtropical ridge and by October 17 Tokage reached its peak intensity of 125 kn/145 mph. Weakening began later that day as the storm turned back to a more northwesterly heading towards Okinawa and Japan. On October 18, Typhoon Tokage was 290 miles south of Kadena Air Base, Okinawa. Recurvature back to the north-northeast towards Japan ensued while the typhoon slowly weakened. Tokage made its closest approach to Okinawa late on October 19 when it was passed just to the south-southeast. The storm turned to the northeast as continued to accelerate as its extratropical transition began. Tokage made landfall over Tosa-Shimizu, near the southern tip of Shikoku, Japan still at typhoon strength. [2] [3] By October 21, the cyclone weakened into a tropical storm 130 nm west of Tokyo, and later that day, the system completed the transition to a nontropical low. The extratropical remains of Tokage moved rapidly northeastward, crossing the International Dateline around midday on October 23.

Impact and aftermath

Typhoon Tokage (Siony)
Tokage 2004-10-16 1706Z.jpg
Typhoon Tokage near peak intensity on October 16
Costliest known Pacific typhoons (adjusted for inflation)
RankTyphoonSeasonDamage
(2024 USD)
1 4  Doksuri 2023 $29.4 billion
2 4  Mireille 1991 $23.1 billion
3 5  Hagibis 2019 $21.3 billion
4 5  Saomai 2000 $16.9 billion
5 5  Jebi 2018 $16.3 billion
7 4  Songda 2004 $15.5 billion
 5  Yagi 2024 $14.7 billion
8 2  Fitow 2013 $14 billion
9 4  Faxai 2019$12.3 billion
10 4  Tokage 2004$11.8 billion
Source:

Japan

2004Nian Tai Feng 23Hao (1).jpg
flood damage by Tokage
2004Nian Tai Feng 23Hao (2).jpg

Tokage came ashore over southern or southeastern Japan on 01:35 (UTC) of October 20. [5] The highest measured wind gust was 142 mph/63.7 m/s at Unzendake, Nagasaki on October 20. The lowest pressure from a land station was 949.4 mb at Okinoerabu, Kagoshima late on October 19. The highest rainfall amount noted in Japan was 550 mm at Fukuharaasahi between late on October 17 and October 21, with 470 mm falling within a 24-hour period.

A total of 18,000 people were forced to evacuate their homes. [6] Damages of the typhoon reached JPY771 billion (US$7.11 billion). [7] A total of 95 deaths were attributed to high winds, flooding and mudslides caused by Tokage, with an additional three people reported missing. [8]

See also

References

  1. ↑ "平成16年台風23号（2004年10月20日）". Yahoo!天気・災害 (in Japanese). Retrieved 2022-10-30.
  2. 1 2 "台風第23号・前線（2004年10月）". www.data.jma.go.jp (in Japanese). 気象庁 . Retrieved 2022-10-30.
  3. 1 2 台風23号 - MLIT
  4. ↑ "上陸数". www.data.jma.go.jp (in Japanese). 気象庁. Retrieved 2022-12-02.
  5. ↑ "Typhoon Tokage". NASA. 21 October 2004.
  6. ↑ Monthly Global Tropical Cyclone Summary October 2004
  7. ↑ "平成１６年の水害被害額（全国・都道府県別）について" (pdf) (Press release) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. May 8, 2006. Archived (PDF) from the original on March 24, 2013. Retrieved March 24, 2013.
  8. ↑ "Typhoon 200423 (Tokage) Disaster Info". National Institute of Informatics. 2004. Retrieved July 15, 2018.
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