Key Facts
• August 11, 2025: Emergency heavy rain alert issued for Kumamoto Prefecture.
• Record-breaking rainfall of over 300 mm in 24 hours in Kumamoto.
• Areas under special alert include Yatsushiro, Tamana, Uki, Nagasu, and Hikawa.
• Rainfall forecast (Aug 11-12): Northern Kyushu 250 mm, Shikoku 200 mm, Tokai 200 mm.
• Rainfall forecast (Aug 12-13): Northern Kyushu 80 mm, Kanto-Koshin 100 mm, Okinawa 80 mm.
• Linear rainbands causing prolonged heavy rain in Northern Kyushu and Southern Kyushu.
• Risk of landslides, flooding, and river overflows remains critically high.
• Evacuation advised to upper floors or rooms farthest from rivers and cliffs.
• Transportation disruptions reported; monitor weather and traffic updates.
• Level 5 alert: Immediate action required to ensure safety.
Summary
Northern Kyushu is experiencing unprecedented rainfall due to linear rainbands, prompting a Level 5 emergency alert. Kumamoto Prefecture has recorded over 300 mm of rain in 24 hours, with additional heavy rainfall expected through August 13. Areas under special alert include Yatsushiro, Tamana, Uki, Nagasu, and Hikawa, where risks of landslides, flooding, and river overflows are critically high. Residents are urged to evacuate to safer locations, such as upper floors or rooms farthest from rivers and cliffs. Transportation networks are significantly affected, and authorities recommend staying updated on weather and traffic conditions. Immediate action is necessary to protect lives as the extreme weather persists.
