Japan Volcano Alerts
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Image: Katsushika Hokusai · Public domainJapan volcanic alert levels today
Last updated:
Eruption warnings in effect
| Volcano | Status | Issued | Change |
|---|---|---|---|
| Tokachidake | Level 3 (Do not approach the volcano) | Sep 12, 2026 09:30 JST | raised |
| Sakurajima | Level 3 (Do not approach the volcano) | Jul 27, 2022 20:00 JST | lowered |
| Beyonesu Rocks | Marine warning | Oct 8, 2026 11:00 JST | lowered |
| Nishinoshima | Near-crater warning (danger near the crater) | Sep 8, 2026 11:00 JST | lowered |
| Sumisujima | Marine warning (danger in surrounding waters) | Sep 19, 2024 11:00 JST | raised |
| Fukutoku-Oka-no-Ba | Marine warning (danger in surrounding waters) | Aug 16, 2021 14:00 JST | continued |
| Ioto | Near-crater warning (danger near the crater) | Dec 1, 2007 10:01 JST | continued |
| Hokkaido-Komagatake | Level 2 (Do not approach the crater) | Oct 2, 2026 07:30 JST | raised |
| Asosan | Level 2 (Do not approach the crater) | Sep 1, 2026 16:00 JST | lowered |
| Kirishimayama (Shinmoedake) | Level 2 (Do not approach the crater) | Oct 17, 2025 11:00 JST | lowered |
| Meakandake | Level 2 (Do not approach the crater) | Sep 15, 2025 15:20 JST | raised |
| Suwanosejima | Level 2 (Do not approach the crater) | Mar 27, 2024 11:00 JST | continued |
| Satsuma-Iojima | Level 2 (Do not approach the crater) | Mar 8, 2021 14:00 JST | continued |
What the alert levels mean
Level 5 (Evacuate) and Level 4 (Evacuation of elderly people etc.) concern residential areas; Level 3 (Do not approach the volcano) and Level 2 (Do not approach the crater) restrict access to the mountain or crater area; Level 1 means ‘Note that this is an active volcano’. Volcanoes without alert levels receive warnings such as ‘danger near the crater’ instead.
All active volcanoes in Japan →
Method
We read JMA’s current volcanic warning data and list of active volcanoes. For each volcano we show the latest item of the type ‘eruption warning/forecast (target volcano)’. Volcanoes not present in that data are shown with an eruption forecast (Level 1 where alert levels are operated). Warning names are translated by this site; the Japanese original is authoritative.
About this page
Japan has 111 active volcanoes. The Japan Meteorological Agency (JMA) issues eruption warnings and, for about 50 volcanoes, volcanic alert levels from 1 to 5. This page shows which warnings are in effect now.