# Typhoon 24 and heavy rain activity near Japan > Live situation record from CLSTR: https://clstr.news/situations/tropical-cyclone-activity-near-japan > Updated: 2026-09-08T14:16:44.000Z. Sources: 21. Developments: 5. Meteorological agencies have been monitoring multiple tropical systems in the Pacific and South China Sea. Initially, a tropical depression near Wake Island was expected to develop into Typhoon 23, with forecasts suggesting it would move north and pass far east of Japan. By late August, monitoring expanded to include two active tropical depressions, one near Hainan Island and another south of Japan. As of September 1, Typhoon 24, named Crovan, has formed south of Japan. The Japan Meteorological Agency reports the typhoon is nearly stationary with a central pressure of 996 hPa and maximum wind gusts of 25 m/s, with a projected path toward the Amami Islands and Kyushu. Concurrently, an active autumn rain front has been moving southward, bringing widespread heavy rain from Western to Eastern Japan. By September 4, the combined influence of Typhoon 24 and the rain front has triggered heavy rain warnings across various regions. Southern Kyushu faces expected rainfall of up to 250mm through Saturday, while Okinawa and surrounding islands experience stormy conditions with thunderstorms. Recent updates indicate that some areas in southern Kyushu have already recorded rainfall exceeding 500mm, resulting in high soil moisture levels and an increased risk of landslides. As the weather intensifies, the Japan Meteorological Agency has warned of the potential formation of ‘linear precipitation zones’ in prefectures including Aichi, Mie, Shizuoka, Ibaraki, Tochigi, and Gunma. Heavy rainfall is expected to peak on Monday, September 7, with some areas potentially receiving up to 300mm of rain within 24 hours. Local authorities have implemented several precautions. In Iwaki City, a Level 3 evacuation advisory was issued for the elderly and vulnerable, and local schools have closed. In Ichikawa City, all elementary and junior high schools were closed for the day, while multiple municipalities in Tochigi Prefecture have opened evacuation centers. ## Claims - A weather front is expected to move north toward Honshu through September 7. (corroborated by 6 sources) - The Japan Meteorological Agency warned of potential linear precipitation zones across multiple regions including Kanto, Tohoku, and Tokai. (corroborated by 6 sources) - Typhoon 24 is influencing weather patterns across Okinawa and the Kinki region. (corroborated by 5 sources) - Typhoon 24 may approach Okinawa Island. (corroborated by 4 sources) - JR East announced service suspensions on the Joban Line and other routes due to heavy rain. (corroborated by 3 sources) - The weather front is causing extremely unstable atmospheric conditions. (corroborated by 2 sources) - Tochigi Prefecture faces a high risk of heavy rain disasters from early Monday morning until noon. (corroborated by 2 sources) - Warning-level heavy rain is possible in the Kanto and Koshin regions. (single source) - Heavy rain may intensify in Kyoto Prefecture starting September 7 due to Typhoon 24. (single source) - Rainfall in southern Kyushu has exceeded 500mm in some areas. (single source) - Record-breaking short-term heavy rain was observed in Hachijojima, Tokyo, with approximately 110mm falling in one hour on September 6. (single source) ## Timeline ### 2026-09-08: Japan highways face closures and restrictions due to heavy rain and wind Heavy rain and strong winds in Japan are causing highway speed restrictions, motorcycle bans, and potential closures across several major expressways and regions through September 11. 4 sources. https://clstr.news/cluster/japan-highways-face-closures-and-restrictions-due-to-heavy-rain-and-wind ### 2026-09-04: Typhoon 24 approaches Okinawa and Daito Islands Typhoon 24 is expected to approach Okinawa and the Daito Islands by September 6-7, bringing heavy rain and wind following an unprecedented surge in typhoon activity this August. 2 sources. https://clstr.news/cluster/typhoon-24-approaches-okinawa-and-daito-islands ### 2026-09-04: Japan weather alert: Heavy rain and train disruptions expected Japan faces extreme heavy rain and potential linear precipitation zones on September 7. Authorities have issued evacuation advisories, closed schools in several prefectures, and announced major train service de 19 sources. https://clstr.news/cluster/typhoon-24-and-rain-front-threaten-heavy-rainfall-across-japan ### 2026-08-31: Japan weather alert: Typhoon 24 and heavy rain threats Typhoon 24 and an active autumn rain front are bringing heavy rain and storm risks to Japan, with significant impacts expected in Okinawa, Tohoku, and Kanto through the upcoming weekend. 3 sources. https://clstr.news/cluster/japan-monitors-two-tropical-depressions-expected-to-become-typhoons ### 2026-08-27: Typhoon 23 expected to develop near Wake Island A tropical depression near Wake Island is expected to become Typhoon 23. Forecasts indicate it will pass far east of Japan without direct impact, though swells may affect the Pacific coast. 3 sources. https://clstr.news/cluster/typhoon-23-expected-to-develop-near-wake-island --- Cite as: Typhoon 24 and heavy rain activity near Japan. CLSTR, https://clstr.news/situations/tropical-cyclone-activity-near-japan