Severe Thunderstorms and Hail Disrupt Japan. Warnings Extended Through May 14
Volatile weather patterns triggered widespread disruptions across Japan on May 13, 2026, as a series of violent thunderstorms and hail caused power outages and urban flooding in multiple regions.
The impact was particularly acute in the Hyogo region, where lightning and hail struck southern areas. In the city of Kobe—specifically within the Chuo and Kita wards—as well as in Nishinomiya, approximately 300 homes experienced power outages. Residents in Takarazuka reported a sudden onset of intense weather, with witnesses describing large hailstones striking balconies with significant force. The Japan Meteorological Agency had issued warnings for thunderclouds and hail continuing through the late night of May 13.
The disruption extended to the capital, where heavy rain accompanied by thunder struck Tokyo’s 23 wards, leading to official warnings regarding potential road flooding.
The instability is expected to persist into the following day. Weather officials have issued thunderstorm warnings for a broad region spanning from Tohoku to Kyushu through May 14, 2026. While some areas are expected to see temperatures climb toward 30°C, Okinawa remains under alert for heavy rain.
These sudden, intense bursts of precipitation, often characterized as “guerrilla rainstorms,” highlight the ongoing challenges of managing urban infrastructure and public safety during Japan’s volatile spring weather transitions.
