[CLSTR]
< Back to situation

[REVISION HISTORY]

Heavy rainfall and relief efforts in Japan

Updated 5 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-21 08:09 UTC → 2026-09-23 03:54 UTC · added removed

Following heavy rainfall in August 2026 that caused significant damage in Chiba and Fukui prefectures, relief and reconstruction initiatives were launched. In Chiba, Chiiki Shinbun Co., Ltd. began a crowdfunding project to raise 1 million yen for the Chiba Heavy Rain Disaster Relief Fund. In Fukui, First Innovation Co., Ltd. and the Tsunagari Ouen association established a website to provide consultation and crowdfunding support for affected businesses and local communities. By late September 2026, weather concerns intensified across the Kanto region. In Saitama Prefecture, a Level 3 heavy rain warning was issued for Yoshikawa City, alongside Level 3 warnings for Yashio and Misato. Other municipalities, including Saitama, Kawagoe, and Kumagaya, remained under Level 2 heavy rain advisories. In Chiba Prefecture, officials in Funabashi City warned of significant flood risks, particularly in areas south of the Sobu Line and within the Eborigawa river system. Residents were advised to use hazard maps to assess personal risk, as previous heavy rainfall has resulted in floor-level flooding in various districts. As of the morning of September 21, 2026, meteorological authorities issued Level 4 landslide disaster danger warnings for several municipalities in Chiba, including Togane, Oamishirasato, Narita, Sakura, Kashiwa, and Yachiyo. Additionally, Level 4 heavy rain danger warnings were issued for Chiba City and Mobara. A Level 3 heavy rain warning was issued for Sodegaura City, with residents advised to remain vigilant against rising river levels and flooding in low-lying areas. Other cities, including Funabashi, Ichikawa, Kisarazu, Matsudo, Narita, and Sakura, were placed under Level 3 warnings, while several other municipalities remained under Level 2 advisories. Typhoon 25 has further exacerbated conditions in the Chiba and Kanto regions, bringing heavy rain and high waves. By September 23, Typhoon 25 caused widespread power outages across Chiba Prefecture, affecting approximately 24,000 households, with major outages reported in Ichihara and Kimitsu. In Ichihara, a residential fire near Ooke on the evening of September 21 injured two people in their 70s; residents believe the blaze was caused by a candle used during the blackout. In Kimitsu, power failures disrupted water pumping stations, resulting in water outages in certain areas.

Versions

  1. 2026-09-23 03:54 UTC Heavy rainfall and relief efforts in Japan
  2. 2026-09-21 08:09 UTC Heavy rainfall and relief efforts in Japan
  3. 2026-09-20 22:33 UTC Heavy rainfall and relief efforts in Japan
  4. 2026-09-20 18:23 UTC Heavy rainfall and relief efforts in Japan
  5. 2026-09-20 16:08 UTC Heavy rainfall and relief efforts in Japan
  6. 2026-09-20 12:55 UTC Heavy rainfall and relief efforts in Japan

Only revisions since CLSTR began indexing content versions appear here. Select a version to see what changed compared to the one before it.