Key Facts
• By 6 PM on April 10, strong rain is falling in the Tokai region.
• A low-pressure system and front cause heavy rain from Kyushu to Tokai.
• Early morning saw over 50 mm/hour very heavy rain in Kyushu and Shikoku.
• As of 6 PM, active rain and thunderclouds cover Tokai with heavy localized rain.
• 24-hour rainfall totals (until 5 PM): Hirugano (Gifu) 164.0 mm, Haruno (Shizuoka) 151.5 mm, Chausuyama (Aichi) 151.0 mm.
• Heavy rain warnings are issued in parts of Shizuoka Prefecture; landslide caution needed.
• Tonight, thunderstorms and heavy rain expected in Tokai and southern Kanto.
• Flooding risk in underpasses due to rapidly rising water; carry large umbrellas when going out.
• Rain will mostly stop late tonight in Tokai and Kanto.
• Hokuriku and Tohoku will see rain tapering off late night; Hokkaido rain continues through night.
Summary
On April 10, a low-pressure system moving over the Sea of Japan and its associated front have brought heavy rain across western to central Japan. By early morning, Kyushu and Shikoku experienced very intense rainfall exceeding 50 mm per hour. As of 6 PM, the Tokai region is under active rain and thunderclouds, with 24-hour rainfall totals surpassing 150 mm in several locations, including Gifu, Shizuoka, and Aichi prefectures. Heavy rain warnings remain in effect in parts of Shizuoka, with a heightened risk of landslides. Tonight, thunderstorms and heavy rain will continue in Tokai and southern Kanto, raising concerns about road flooding, especially in underpasses where water can accumulate rapidly. Residents are advised to carry large umbrellas even if rain is not currently heavy. Rain is expected to ease late tonight in these areas. Meanwhile, rain will gradually stop late at night in Hokuriku and Tohoku, but Hokkaido will continue to experience rain through the night. Caution is urged for flooding and landslides during this period.
