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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 · 噴火警戒レベル3（入山規制）

Volcanic Alert Level 3 (Restriction on proximity to the volcano)

Prepare and check your route · official rules as of 2026-10-17

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Volcanic level 3Prepare and check your route

噴火警戒レベル3（入山規制）

Volcanic Alert Level 3 (Restriction on proximity to the volcano)

Climbing and entry to dangerous parts of the mountain are banned. The restricted area depends on the volcano; check the municipality's notice.

What to do now

  1. Do not enter the restricted zone; hiking routes and ropeways may be closed.

Issued by: JMA (with the local volcano disaster council). 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.