USGS Volcano Notice - DOI-USGS-YVO-2022-05-11T08:00:59-07:00

The University of Utah, a YVO member agency, sent out the following press release about a magnitude 4.2 earthquake on the east side of Yellowstone National Park at 7:32 AM MDT.

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PRESS RELEASE
University of Utah Seismograph Stations

Released: May 11, 2022 08:35 AM MDT

The University of Utah Seismograph Stations reports that a light earthquake of magnitude 4.2 occurred at 07:32 AM on May 11, 2022 (MDT).  The epicenter of the shock was located 23 mi NE of the East Entrance of Yellowstone National Park.  A total of 5 earthquakes of magnitude 3.0 or greater have occurred within 16 mi of the epicenter of this event since 1962.  The largest of these events was a magnitude 4.2 on March 25, 2008, 20 mi NE of Fishing Bridge, WY.

Anyone who felt the earthquake is encouraged to fill out a survey form on the US Geological Survey website for this event: https://earthquake.usgs.gov/earthquakes/eventpage/uu60497322/executive

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As of 9 AM MDT, 15 felt reports had been submitted for the earthquake, with shaking described as "light" to "weak."  Earthquakes like this are common in the Yellowstone region, where over 30 earthquakes of M4 or greater have occurred since 1973.  Today’s earthquake, which took place at a depth of 14 km (8.7 miles), is the largest to occur in Yellowstone National Park since a M4.5 event on June 15, 2017 (part of a long-lived swarm of small earthquakes in the area between Hebgen Lake and Norris Geyser Basin, northeast of West Yellowstone, MT).