Volcano Hazards

U.S. Volcanoes and Current Activity Alerts

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There are 169 potentially active volcanoes in the U.S. The mission of the USGS Volcano Hazards Program is to enhance public safety and minimize social and economic disruption from volcanic unrest and eruption. We accomplish this by delivering effective forecasts, warnings, and information about volcano hazards based on scientific understanding of volcanic processes.


Date published: April 19, 2021

Photo and Video Chronology – Kīlauea – April 19, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 226 m (741 ft) deep this morning, April 19. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission...

Date published: April 19, 2021

The Queen’s Laundry—the oldest historic building in Yellowstone National Park

Yellowstone is dotted with historic places.  But did you know that the oldest building that is still standing, built 140 years ago, was constructed because of a thermal spring? 

Date published: April 15, 2021

Volcano Watch — Kīlauea’s other rift zone—Young activity in the Southwest Rift Zone

It is no secret that the Island of Hawaiʻi is home to fantastic volcanic features, many of which have been created during eruptions of Kīlauea, Mauna Loa, and Hualalai since 1800. 

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