Chiba Rainfall Tops 360 mm, Deaths Rise

A record-breaking rainfall event in the Chiba region near Tokyo in mid-August 2026 caused widespread flooding, with official tallies showing more than 360 millimeters of rain in 24 hours. The deluge left at least five to eight people dead across multiple cities, submerged vehicles, and extensive property damage, while power outages affected tens of thousands of households. Tens of thousands of travelers and commuters were stranded, with about 7,000 staying inside Narita Airport terminals as rail and road links were severed and many routes flooded. Emergency responders and the Self-Defense Forces distributed supplies, conducted rescues, and ferried evacuees from flooded areas as infrastructure, including roads and rail lines, struggled to cope. Authorities warned that the situation remained dangerous, urged residents to stay off flooded routes, and emphasized the scale and rarity of the event as officials sought to restore services and assess the damage. The incidents disrupted Japan’s Bon holiday travel period, prompting safety advisories and reminders to monitor official channels for weather updates and evacuation guidance.