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Level 5 warning as Chiba floods kill eight, rescue thousands

8/14/2026

Summary

Agency Issues Warning

Record-breaking rainfall in Chiba Prefecture on August 14, 2026 killed at least eight people and stranded thousands.
The Japan Meteorological Agency issued a Level 5 warning for heavy rain and landslides, with hourly totals of 115 mm in Chiba City and 9.7 cm in Sakura.
Evacuation orders affected over 400,000 residents in Chiba and Ibaraki, and Ground Self-Defense Force buses rescued roughly 4,000 people at Soga station.

Summary

Chiba Floods

Chiba recorded a record rain event that triggered flooding, which meteorologists said stemmed from a mix of cold air, warm moist air and converging winds.
The floods followed two weeks of severe weather that featured typhoons and a heat wave that killed three zoo lions and produced Japan’s “cruelly hot day.”
Experts warned the atmosphere remained unstable and could produce further intense thunderstorms, highlighting growing challenges for Japan’s disaster-risk planning.

Summary

Chiba Recovery

Inzai lifted its evacuation measure at 17:10 LT, Ichihara at 16:48 LT and Oamishirasato at 15:35 LT on August 14.
Tokyo Electric Power Grid reported the Soga substation was submerged, leaving about 19,600 premises without electricity.
Fifty-eight post offices in Chiba Prefecture suspended counter services as of 10:00 LT, halting deliveries in several areas.
Roughly 6,000 people stayed inside Narita International Airport after a coordination meeting on August 13, receiving water, food and sleeping bags.

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Agency Issues Warning

Record-breaking rainfall in Chiba Prefecture on August 14, 2026 killed at least eight people and stranded thousands.
The Japan Meteorological Agency issued a Level 5 warning for heavy rain and landslides, with hourly totals of 115 mm in Chiba City and 9.7 cm in Sakura.
Evacuation orders affected over 400,000 residents in Chiba and Ibaraki, and Ground Self-Defense Force buses rescued roughly 4,000 people at Soga station.

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