Recorded event
Meteorological case report published
The Japan Meteorological Agency published a consolidated account of the August rainfall.
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This later documentation joins the same timeline without moving the storm into September.
All timelines From the beginning
Chiba rainfall: the storm and the later report
Separate the August rainfall event from the meteorological agency's September publication.
Reviewed 9/20/2026
August 13-14 rainfall and the September 16 report. Meteorological records only; not a complete account of damage or recovery.
Dates without a time use the local date of the event.
Through 9/16/2026
August 13-14 rainfall and the September 16 report. Meteorological records only; not a complete account of damage or recovery.