Key Facts
• Typhoon 12 formed on August 21, 2025, at 9:00 AM near Satsumasendai City.
• Landfall occurred near Hioki City at 5:00 PM, with 182.5 mm of rain in 3 hours.
• Kagoshima experienced record-breaking rainfall: 270 mm in Hioki City on August 21.
• Transportation disruptions: JR local lines, Kagoshima City trams, and ferries suspended.
• JR Kyushu suspended operations on multiple lines until the evening of August 22.
• Flooding caused road closures, including 3.8 km of National Route 225.
• 23,000 households in 8 cities received evacuation orders; 298 people evacuated.
• Hourly rainfall reached 120 mm in Ichikikushikino City and 96.5 mm in Hioki City.
• Forecast: Up to 300 mm of rain in Satsuma and 200 mm in Osumi by August 22 evening.
• Typhoon 12 expected to weaken into a tropical depression by August 22.
Summary
Typhoon 12 caused significant disruptions in Kagoshima Prefecture on August 21, 2025, with record-breaking rainfall and widespread flooding. Hioki City recorded 182.5 mm of rain in just three hours, leading to transportation halts, including JR local lines, trams, and ferries. Roads were also closed due to flooding, and evacuation orders were issued to 23,000 households across eight cities. The typhoon is expected to weaken into a tropical depression by August 22, but heavy rainfall of up to 300 mm in Satsuma and 200 mm in Osumi remains a concern. Authorities continue to monitor the situation as the risk of linear rainbands persists.
