Key Facts
• August 11, 2025, 11:36 AM: Severe rainfall warning issued for Kumamoto.
• Over 400 mm of rain fell in 12 hours, equivalent to a month’s rainfall.
• Areas affected: Tamana, Nagomi, Yatsushiro, Uki, Hikawa, Kami-Amakusa, Amakusa.
• Rain clouds slightly weakened near noon due to reduced southwest winds.
• New low-pressure system expected near Goto Islands, intensifying rain and wind.
• Forecast: Over 50 mm of rain per hour possible by early afternoon.
• Landslide and flood risks remain extremely high in affected regions.
• Fukuoka and Nagasaki also face potential heavy rain and disaster risks.
• Authorities urge maximum caution against landslides, flooding, and river overflows.
Summary
Kumamoto remains under a severe rainfall warning as active rain clouds persist, with over 400 mm of rain recorded in 12 hours-equivalent to a month’s rainfall. While rain clouds slightly weakened near noon, the overall weather pattern remains unchanged, and heavy rain is expected to continue. A new low-pressure system near the Goto Islands may bring over 50 mm of rain per hour by early afternoon, increasing risks of landslides and flooding. Fukuoka and Nagasaki are also at risk, with authorities urging maximum vigilance in areas already experiencing record rainfall. Residents in affected regions should remain alert to potential disasters, including river overflows and further landslides.
