Volcano Alerts in Japan
Volcano Alerts for Japan (East Asia) come from Japan Meteorological Agency (JMA), Fire and Disaster Management Agency (FDMA). This page explains what these warnings mean, which authority publishes them, and how to check the current status for Tokyo.
Check live eruptions, status for TokyoBrowse all warnings
At a glance
- countryJapan · Asia
- reference cityTokyo (35.68, 139.69)
- emergencyPrimary emergency number110 / 119
- risk profilestorm, flood, heat, cold, wildfire, earthquake, volcano, tsunami, landslide, coastal, radiation
What counts as a volcano alerts
Volcano alerts use colour codes or alert levels set by the local volcano observatory, from green (normal) to red (eruption imminent or in progress). Ash fall affects aviation, water supplies and lungs; pyroclastic flows and lahars move fast along valleys. Exclusion zones are set by civil protection and must be followed literally.
Who issues volcano alerts in Japan
Warning levels, colours and terminology are set nationally. Always read the warning text of the issuing authority: it names the affected districts, the expected time window and the recommended action.
If a warning is active in Japan
- Stay outside the exclusion zone at all times.
- Protect airways with a mask and seal windows against ash.
- Clear ash from roofs only when it is safe - wet ash is heavy and roofs collapse.
Where the data comes from
Waarning reads public, key-free sources for Japan: Smithsonian GVP, NASA EONET, national volcano observatories, VAAC ash advisories. Measurements and official warnings are shown separately, and official warnings always keep the name of the authority that issued them.
Frequently asked questions
Who issues volcano alerts in Japan?
Japan Meteorological Agency (JMA), Fire and Disaster Management Agency (FDMA). Waarning does not issue warnings; it aggregates the public feeds of these bodies and links back to the original source.
What is the emergency number in Japan?
The primary emergency number is 110 / 119. Use it for a life-threatening situation; for non-urgent reports use the local police station number.
Does Waarning show live volcano alerts for Japan?
Yes. The dashboard loads the current values for Tokyo from Smithsonian GVP, NASA EONET, national volcano observatories, VAAC ash advisories. You can open it with one click and the location is already set.
More warnings for Japan
- Severe Weather Warnings
- Flood Warnings
- Heat Warnings
- Cold and Snow Warnings
- Wildfire Warnings
- Air Quality Warnings
Volcano Alerts in nearby countries
Generated 2026-10-14. Waarning is not an official warning service; in an emergency follow local authorities and emergency services.