Volcano Hazards

U.S. Volcanoes and Current Activity Alerts

Activity Alerts:
Zoom to Region:
Volcano Status:
Elevated | Normal | Unassigned


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 13, 2021

Photo and Video Chronology – Kīlauea – April 13, 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 13. 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 12, 2021

Yellowstone’s caldera, resurgent domes, and lava flows—volcanic giants hiding in plain sight

While geysers and hot springs are relatively easy to find in Yellowstone, what about the caldera, and the lava flows and the two massive resurgent domes that formed after the caldera erupted?  They’re there.  You just need to know where to look.

Date published: April 9, 2021

New USGS Data Release — Crater geometry data for Puʻuʻōʻō, on Kīlauea Volcano’s East Rift Zone, in May 2018

The USGS recently published a data release that includes a three-dimensional model of Puʻuʻōʻō, on Kīlauea's East Rift Zone, and the collapse crater, constructed from aerial thermal images collected on 11 May 2018.  Structure-from-motion processing was used to create the model from the sequence of oblique images, and ground control using kinematic GPS was used to georegister the model.   

Find a U.S. Volcano