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Educational guide, not an alert service: no live data. Always follow official instructions from JMA, your municipality, police, fire and staff. In an emergency, protect yourself first. Full disclaimer

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Japan alert decoder · レベル3氾濫警報

Level 3 Warning (Flood) · Level 3

Elderly / slow evacuees go now; others get ready · official rules as of 2026-10-17

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Level 3Elderly / slow evacuees go now; others get ready

レベル3氾濫警報

Level 3 Warning (Flood)

Red, Alert Level 3 equivalent: danger is rising. People who need time to evacuate (elderly, disabled, small children) should start evacuating; everyone else gets ready. Hazard: a named major river overflowing (the alert names the river).

What to do now

  1. Elderly people and those who need help: evacuate now.
  2. Everyone else: check the hazard map, pack, and be ready to leave.
  3. Check KIKIKURU and your municipality's notices.
  4. Stay away from riverbanks and land near the named river.

Issued by: JMA with MLIT or the prefecture (river flood forecasts). Live status: JMA warnings map (English)JMA earthquake information (English)JMA tsunami information (English)

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Educational guide, not an alert service: no live data. Always follow official instructions from JMA, your municipality, police, fire and staff. In an emergency, protect yourself first.

Data as of 2026-10-17 from official JMA, Cabinet Office, Cabinet Secretariat (J-ALERT) and Ministry of the Environment pages, with official names from the JMA multilingual dictionary (2026-03-26). Not affiliated with JMA or any government agency.

Educational guide, not an alert service: no live data. Always follow official instructions from JMA, your municipality, police, fire and staff. In an emergency, protect yourself first. Data as of 2026-10-17 from official JMA, Cabinet Office, Cabinet Secretariat (J-ALERT) and Ministry of the Environment pages, with official names from the JMA multilingual dictionary (2026-03-26). Not affiliated with JMA or any government agency.