Key Facts
• A tropical depression in the East China Sea became Typhoon No. 12 on August 21 at 9:00 AM.
• As of noon, the typhoon’s center was 50 km southwest of Satsumasendai City, Kagoshima.
• Central pressure: 1004 hPa; maximum wind speed: 18 m/s; peak gusts: 25 m/s.
• Most of Satsuma and Osumi regions are experiencing winds over 15 m/s.
• The typhoon is expected to make landfall in Kagoshima on the night of August 21.
• It will weaken into a tropical depression by the morning of August 22 in Miyazaki.
• Linear rainbands may cause heavy rain from August 21 evening to August 22 evening.
• South Satsuma City recorded 82 mm of rain in one hour by 1:40 PM on August 21.
• Total rainfall since August 20 has exceeded 200 mm in some areas.
• Landslide warnings issued for multiple cities, including Kagoshima and Satsumasendai.
• Predicted 24-hour rainfall (Aug 21-22): Satsuma 250 mm, Osumi 180 mm, Tanegashima/Yakushima 200 mm.
• Additional 24-hour rainfall (Aug 22-23): Satsuma/Osumi 150 mm, Tanegashima/Yakushima 100 mm.
• Risks include landslides, flooding, river overflow, strong winds, high waves, lightning, and tornadoes.
Summary
Typhoon No. 12 formed unexpectedly on August 21 due to high sea temperatures in the East China Sea. It is currently moving slowly eastward and is expected to make landfall in Kagoshima Prefecture by the night of August 21, weakening into a tropical depression by the morning of August 22 in Miyazaki. The typhoon brings risks of heavy rain, particularly from linear rainbands, with some areas already experiencing over 200 mm of rainfall. Landslide warnings and heavy rain alerts have been issued across Kagoshima, with predicted rainfall reaching up to 250 mm in Satsuma. Residents are advised to remain vigilant against landslides, flooding, and other severe weather conditions, including strong winds, high waves, and lightning.
