Key Facts
• On August 10, 2025, Saga Prefecture experienced torrential rain of 110mm in one hour.
• The Japan Meteorological Agency issued a ‘Record-Breaking Short-Term Heavy Rainfall Information’ alert.
• The rainfall occurred near Takeo City at approximately 8:30 PM.
• Such alerts are issued for rain exceeding 80mm per hour, occurring once every few years.
• Increased risks of landslides and river flooding have been reported in surrounding areas.
• Residents are advised to remain vigilant against potential disasters.
Summary
On August 10, 2025, Saga Prefecture faced a record-breaking rainfall of 110mm within an hour near Takeo City, prompting the Japan Meteorological Agency to issue a ‘Record-Breaking Short-Term Heavy Rainfall Information’ alert. This type of alert is reserved for extreme rainfall events that occur only once every few years, with over 80mm of rain per hour. The heavy rain has heightened the risk of landslides and river flooding in the region, necessitating caution among residents. Authorities urge vigilance to prevent potential disasters.
