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Volcano Alerts

U.S. volcanoes above normal background activity, from the USGS Volcano Hazards Program.

Collected automatically and may be delayed. Not an official warning. In an emergency, call 911.

Elevated volcanoes

Volcano data temporarily unavailable

We could not reach the USGS. Check volcanoes.usgs.gov.

Alert levels

  • ADVISORY Signs of elevated unrest above known background levels.
  • WATCH Heightened or escalating unrest, or a minor eruption with limited hazards.
  • WARNING A hazardous eruption is imminent, underway or suspected.