May 20, 2022

May 21, 2019 – Heavy rain lashed Japan’s main island earlier today, disrupting rush-hour transport and prompting one city to advise residents to evacuate.

The western city of Wakayama was deluged by a May record 55.5 millimeters of rain per hour in early morning, while central Tokyo and central Nagoya respectively recorded 13.5 mm per hour and 23 mm per hour.

The city of Hamamatsu in the central prefecture of Shizuoka urged some residents to evacuate as river levels rose. The prefectural government issued a mudslide warning for a wider area including Fujinomiya, Shimada, Kakegawa and Fujieda.

The Japan Meteorological Agency said a cold weather front passing the main island of Honshu, and an inflow of warm and humid air mass, brought the heavy rain. It also warned of high waves, strong winds, lightning and tornados along the Pacific coast of eastern Japan.

Trains in the Kanto region covering the Tokyo metropolitan area were delayed or suspended, and a ferry service in Tokyo Bay was cancelled.

The agency expects 180 mm of rain in the 24 hours through 6 a.m. Wednesday in parts of Kanto, the Izu island chain off Tokyo, and the Tokai region that includes Shizuoka.