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.
News
Volcano Watch — A small but notable magma intrusion at Kīlauea’s summit
The 2018 lower East Rift Zone eruption and summit caldera collapse marked the end of the 35-year-long Puʻu ʻŌʻō and 10-year-long summit lava lake eruptions, and the beginning of a new chapter in Kīlauea Volcano activity. The volcano is continuing to behave in ways that are a response to the major events of 2018 and “the new normal” is yet to be defined.
USGS HVO Information Statement — Magnitude-4.4 Earthquake beneath northwest flank of Mauna Kea, Hawai‘i
The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.4 earthquake located beneath Mauna Kea's northwest flank on Monday, December 14, at 9:27 a.m., HST.
Natural Hazards Newsletter - Inaugural Issue - Vol. 1 | Issue 2021-Winter
We introduce the USGS Natural Hazards newsletter. In this issue: A new geonarrative about the 2019 Ridgecrest earthquake, Potential landslide in Alaska, Subduction Zone Science, Post-wildfire debris flow assessments, new @USGS_Quakes Twitter account, Mapping faults in Puerto Rico, Coastal Change Top Story, Photo Round Up and more!