Typhoon Champi transforms into extratropical cyclone
- The typhoon Champi transformed into an extratropical cyclone in the East China Sea late on Sunday, bringing rains, winds, and high waves to Japan, according to the Japan...
- Meteorological authorities noted that Champi had registered sustained winds approaching 300 kilometers per hour over the Philippine Sea earlier in the week, earning a classification by the United...
- Atmospheric conditions remained unstable across southern and central Japan, prompting weather authorities to issue warnings for potential landslides and lowland flooding.
The typhoon Champi transformed into an extratropical cyclone in the East China Sea late on Sunday, bringing rains, winds, and high waves to Japan, according to the Japan Meteorological Agency. The storm previously left at least one person dead and half a thousand injured during its passage through Taiwan.
Meteorological authorities noted that Champi had registered sustained winds approaching 300 kilometers per hour over the Philippine Sea earlier in the week, earning a classification by the United States Joint Typhoon Warning Center as one of the most powerful storms recorded globally in what is so far this year. By 21:00 local time on Sunday, the Japan Meteorological Agency tracked the system moving northeast at 20 kilometers per hour after its structural transition.
Typhoon Champi Transition and Regional Weather Impact
Atmospheric conditions remained unstable across southern and central Japan, prompting weather authorities to issue warnings for potential landslides and lowland flooding. In the city of Goto, located within the southern prefecture of Nagasaki, precipitation exceeded 300 millimeters over a 48-hour window, marking the highest October rainfall total since record-keeping began, based on data from Japanese public broadcaster NHK.
The storm’s expansive reach also affected neighboring regions before reaching the Japanese archipelago. Champi’s earlier trajectory through Taiwan resulted in one fatality and approximately 500 injuries.
Precipitation Totals and Island Weather Disruptions
Reporting provided additional metrics on the storm’s periphery as it passed south of Jeju Island. Champi weakened to an extratropical cyclone about 230 kilometers south-southeast of Seogwipo, where Jeju experienced cumulative rainfall exceeding 415 millimeters over a four-day period starting October 23.
Mountainous terrain on Jeju recorded the heaviest downpours, with Samgakbong peak at Mount Halla measuring 415.5 millimeters of rain, followed by Jindalaebat with 370.5 mm, Seongpanak with 366 mm, Sancheondan with 364 mm, and Eorimok with 355 mm. In areas outside the mountainous zone, rainfall reached 314 mm in Wasan, 309 mm in Songdang, 300 mm in Daeheul, 291.5 mm in Odeung, 275 mm in Gasiri, 274.5 mm in Pyoseon, 254.4 mm in Seongsan, and 215.5 mm in Jeju. Strong winds associated with the weakening system knocked down trees, flooded agricultural greenhouses, forced the cancellation of ferry routes, and restricted public access to Mount Halla.