Key Facts
• July 16: Sudden rain in Chiba City caused flooding as drainage systems failed.
• Roads were submerged, with visibility challenges differing between day and night.
• JAF advises avoiding flood-prone areas and rerouting when roads are submerged.
• July 14: Gifu City experienced severe rain and wind, damaging 24 buildings.
• Meteorological analysis suggests a tornado caused the Gifu damage.
• Similar tornado-like winds damaged homes in Shizuoka City.
• Downbursts and gust fronts, caused by cumulonimbus clouds, are common in July and August.
• Tokyo’s Nakano Station saw scaffolding collapse due to strong winds in 2023.
• May 2023: A pipe shed hit a train in Nagano, killing one and injuring two.
• Farmers in Hachioji City report crop damage from continuous rain since July 14.
• Corn crops were toppled, doubling harvest labor; 30-40% of tomatoes were discarded.
• July 17: Heavy rain expected in Tokai and Kinki regions, potentially disrupting transport.
Summary
Heavy rain and strong winds have caused significant damage across Japan. On July 16, Chiba City experienced rapid flooding due to overwhelmed drainage systems, with visibility challenges differing between day and night. The Japan Automobile Federation (JAF) advises avoiding flood-prone areas and rerouting when necessary. Severe weather on July 14 in Gifu City damaged 24 buildings, likely caused by a tornado. Similar tornado-like winds were reported in Shizuoka City. Downbursts and gust fronts, phenomena linked to cumulonimbus clouds, are peaking in July and August. Past incidents include scaffolding collapse near Tokyo’s Nakano Station in 2023 and a fatal train collision in Nagano in May 2023. Farmers in Hachioji City report extensive crop damage, with corn toppled and 30-40% of tomatoes discarded due to sudden rain. Heavy rain is forecasted for July 17 in the Tokai and Kinki regions, potentially affecting transportation.
