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16 clusters · 73 sources · 63 days · First seen · Last updated

Severe weather and volcanic activity in Japan

Overview

By early September 2026, Typhoon 24 and linear precipitation zones brought extreme weather to Japan. In Aomori Prefecture, record-breaking rainfall continued, with Ajigasawa recording 260 mm. In Aomori City, a Level 5 emergency safety assurance was issued for the Asuka and Setoko districts following the flooding of the Setoko River, impacting 892 people across 456 households. In the Tsugaru region, a linear precipitation zone formed in the early hours of September 2, causing residential flooding, road inundation, and landslides in Hirosaki and Ajigasawa. In central Japan, unprecedented torrential rainfall triggered mass evacuation orders for hundreds of thousands of residents in Ishikawa, Toyama, and Fukui prefectures. As the weather persisted, heavy rainfall from Typhoon Krovanh and a tropical depression triggered a Level 5 special landslide warning for Yakushima, Kagoshima Prefecture, on September 4. The Onoaida district recorded a record 24-hour rainfall of 490.5 mm. Although the Level 5 warning was later downgraded to a Level 4 danger warning, authorities warned of imminent landslide danger. Infrastructure damage in Yakushima included a broken water intake in the Nagamine settlement, causing water outages, and fallen trees in Nishinoomote City. In the Kagoshima region, an elementary school student was rescued after being swept into a swollen drainage ditch. In Miyazaki Prefecture, intense rainfall led to Level 4 landslide warnings and evacuation orders for approximately 7,800 households, with reports of field flooding, fallen trees, and the closure of sections of National Route 10. By September 6, Typhoon 24 and associated low-pressure systems continued to threaten the country. Authorities issued warnings for heavy rainfall in the Kinki region—including Kyoto, Osaka, and Shiga—as well as the Kanto and Tokai regions. On September 7, heavy rain warnings were issued for the Yamagata region and the Hokuriku area. By late September, severe weather persisted across various regions.

Entities

Japan Meteorological Agency · Toyama Prefecture · Sanae Takaichi · Ishikawa Prefecture · Aomori Prefecture

Claims

What the coverage asserts, and how many sources carry each claim.

Coverage disagrees

Sources make claims that cannot both be true. CLSTR reports the disagreement; it does not decide who is right.

  • "Heavy rains in Aomori caused damage to 59 buildings." www.aba-net.com

    vs

    "69 buildings, including schools and medical facilities, suffered flooding damage." www.toonippo.co.jp

    The claims report different numbers of buildings damaged in Aomori (59 vs 69).

  • "Ajigasawa recorded 260.0 mm of rainfall between 7:00 PM on September 1 and 5:00 AM on September 3." mutsushimpo.com · www.aba-net.com · www.toonippo.co.jp

    vs

    "Ajigasawa recorded 225 mm of rainfall within 24 hours, the highest in its observed history." www.aba-net.com · mutsushimpo.com · www.toonippo.co.jp

    The claims report different rainfall amounts for Ajigasawa (225 mm vs 260.0 mm).

Timeline

  1. [INTERNATIONAL] 2 sources
    Iwaki City issues evacuation advisory due to Typhoon 25

    Iwaki City, Japan, has issued Level 3 evacuation advisories for elderly residents as Typhoon 25 approaches, bringing risks of flooding, landslides, and preemptive road closures in Fukushima Prefecture.

  2. [INTERNATIONAL] 2 sources
    Toyama Prefecture expands flood relief aid for Himi residents

    Toyama Prefecture is expanding financial aid to all households with above-floor flooding following heavy rains, while volunteer groups organize recovery efforts in Himi.

  3. [INTERNATIONAL] 9 sources
    Mount Tokachidake volcanic alert raised to Level 3 in Hokkaido

    Japan's Meteorological Agency raised the volcanic alert for Mount Tokachidake in Hokkaido to Level 3, banning mountain entry and ordering evacuations in Fukiage Onsen due to increased seismic activity.

  4. [INTERNATIONAL] 4 sources
    Japan floods and landslides cause fatalities and mass evacuations

    Heavy rains and tropical depression Krovanh have caused landslides and flooding in Japan, killing two people and injuring dozens. Thousands have been evacuated as authorities issue high-level alerts.

  5. [INTERNATIONAL] 2 sources
    Japan: Heavy rain forces closure of 3,600 schools

    Heavy rain in eastern Japan has closed over 3,600 schools across 11 prefectures, caused one death, and disrupted rail services for over 140,000 people. High-level landslide warnings are in effect.

  6. [INTERNATIONAL] 6 sources
    Yakushima issued Level 5 landslide warning due to Typhoon Krovanh

    Typhoon Krovanh triggered a Level 5 emergency landslide warning for Yakushima, Japan. Record rainfall and heavy storms have caused widespread landslide risks across Kagoshima and Miyazaki prefectures.

  7. [INTERNATIONAL] 42 sources
    Japan weather: Typhoon 24 and heavy rain trigger emergency alerts

    Typhoon 24 and heavy rain have caused flooding and landslides in Japan, including a Level 5 emergency in Aomori City and damage in the Tsugaru region. Severe weather is expected to continue through September 7.

  8. [INTERNATIONAL] 4 sources
    Central Japan issues mass evacuations due to unprecedented rainfall

    Hundreds of thousands of people in central Japan face evacuation orders as unprecedented rainfall causes river overflows, flooding, and landslides in Ishikawa, Toyama, and Fukui prefectures.

  9. [INTERNATIONAL] 3 sources
    Toyama Prefecture announces relief measures for heavy rain victims

    Toyama Prefecture has announced relief measures, including financial aid and temporary housing, following heavy rains that caused hundreds of residential damages in Himi and surrounding areas.

  10. [INTERNATIONAL] 14 sources
    Japan heavy rain triggers level 5 warnings in Ishikawa and Toyama

    Extreme rainfall in Japan has triggered level 5 emergency warnings in Ishikawa and Toyama, causing widespread flooding, landslides, and evacuations for thousands, including over 1,800 people in Akita.

  11. [INTERNATIONAL] 4 sources
    Japan weather: Heavy rainstorms cause flooding in Kanto and warnings for Kinki

    Severe localized rainstorms have caused flooding and road damage in the Kanto region, with heavy rain warnings expected for the Kinki region, including Osaka and Kyoto, through August 24.

  12. [INTERNATIONAL] 3 sources
    Japan weather alerts: Tornado warnings in Hiroshima and heavy rain risks in Osaka

    Japan Meteorological Agency issues tornado advisories for Hiroshima and warns of heavy rain and flooding risks in Osaka starting August 22.

  13. [INTERNATIONAL] 2 sources
    Japan weather alert: Heavy rain and flooding risks in Kanto-Koshin and Tochigi

    Heavy rain warnings have been issued for Japan's Kanto-Koshin region and Tochigi Prefecture, with risks of flooding, landslides, and lightning expected through the early hours of the 22nd.

  14. [INTERNATIONAL] 4 sources
    Japan weather: Heavy rain alerts issued for Yuzawa and Kyoto

    Heavy rain alerts have been issued in Japan, with Yuzawa City seeing 100mm of rain in one hour and Kyoto Prefecture facing risks of warning-level storms and localized thunderstorms.

  15. [INTERNATIONAL] 2 sources
    Heavy rain warnings issued for Kanto-Koshin and Tochigi regions

    Heavy rain warnings are in effect for Japan's Kanto-Koshin and Tochigi regions due to unstable weather, with risks of flooding, landslides, and intense thunderstorms through the early hours of the 10th.

  16. [INTERNATIONAL] 5 sources
    Thunderstorm warnings issued for Kumamoto and Aomori prefectures in Japan

    Japan's weather agencies issued thunderstorm warnings for Kumamoto and a heavy‑rain/lighting advisory with farm safety guidance for Aomori on 21 July 2026.

Sources

aba-net.com · adnKronos.com · ahoradigital.net · akashi.goguynet.jp · anninhthudo.vn · asiainfonews.com · blogdoperrone.blogosfera.uol.com.br · ca.sports.yahoo.com · chinesepress.com · chofu-komae.goguynet.jp · cmjornal.pt · conexaomarilia.com.br · emisorasunidas.com · fnn.jp · fuji-fujinomiya.goguynet.jp · fukuishimbun.co.jp · fukuokaminami.goguynet.jp · funabashi.goguynet.jp · gurizuri0505.halfmoon.jp · hidakashimpo.co.jp · higashiosaka.goguynet.jp · hirosaki.goguynet.jp · hokkoku.co.jp · hoy.com.do · inazawa-shakyo.jp · ipc.digital · iwaki-minpo.co.jp · iwaki.goguynet.jp · japantimes.co.jp · jisin.jp · joetsu.yukiguni.town · jugem.jp · kawagoe.goguynet.jp · kobehigashinada.goguynet.jp · kusatsuritto.goguynet.jp · kyoto-np.co.jp · kyoto-np.jp · montecristinoticias.com · mutsushimpo.com · nagoyameito-chikusa.goguynet.jp · news.cube-soft.jp · newscentral.africa · neysoftballs.com · nyfights.com · okinawatimes.co.jp · prtimes.jp · saga.goguynet.jp · saitamaminami-sakura.goguynet.jp

This summary has been updated 47 times: see revision history