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 about 13 mi north 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: earthquake.usgs.gov.
University of Utah Seismograph Stations Released: July 16, 2021 08:15 PM MDT
The University of Utah Seismograph Stations reports that a minor earthquake of magnitude 3.6 occurred at 06:45 PM on July 16, 2021(MDT). The epicenter of the shock was located beneath Yellowstone Lake, 7.4 mi SSE of Fishing Bridge, WY. This earthquake is part of an intense sequence of small earthquakes, known as a swarm, that began yesterday afternoon (July 15). There have been approximately 200 earthquakes in this swarm so far, including three others of magnitude 3.0 or larger and approximately 40 in the magnitude range 2 to 3. Earthquake swarms are common in the Yellowstone National Park region, and account for roughly half of the total seismicity in the Yellowstone region. The current swarm is occurring in an area that has had swarm activity in the recent past, including the 2008-2009 Yellowstone Lake swarm that included over 800 earthquakes.
Anyone who felt the earthquake is encouraged to fill out a survey formon the US Geological Survey website: earthquake.usgs.gov.
Earthquake Summary: Date (UTC): July 17, 2021 Time (UTC): 00:45 Date (local): July 16, 2021 Time (local): 06:45 PM MDT Latitude: 44 27.64′ N Longitude: 110 20.83′ W Preferred magnitude: 3.6 Ml
In the Fall of 2015 and 2016, The University of Utah, in collaboration with the National Park Service and the University of Texas at El Paso installed dense seismic arrays centered on Old Faithful Geyser in Yellowstone National Park. The goals of this project are to image the shallow velocity structure beneath and around Old Faithful in order to identify areas of shallow, active hydrothermal activity as well as to learn more about these hydrothermal systems, in particular Old Faithful. The Upper Geyser Basin (Figure 1), where Old Faithful is located, has one of the highest concentrations of hydrothermal features in the world.
In November of 2015, 133 seismometers were deployed for 2 weeks (Figure 2) collecting continuous passive seismic data. The average station spacing was ~50 meters and the aperture of the entire array was ~1 km.
In November of 2016, in order to achieve a higher station density, a different approach was taken in that smaller dense arrays with ~20 meter spacing were deployed for 24-48 hours and then were moved to different locations around Old Faithful for another 24-48 hours until the area of interest was covered (Figure 3). In addition, while each individual array was in, we did active seismic sources using a sledgehammer throughout the array. A subset of instruments was deployed in the same location throughout the experiment in order to tie all the individual sub-arrays together.
Data are being analyzed to image the shallow subsurface beneath the Upper Geyser Basin near Old Faithful.
The University of Utah Seismograph Stations reports that a minor earthquake of magnitude 3.5 occurred at 01:46 PM on August 15, 2019 (MDT). The epicenter was located on the southern boundary of Yellowstone National Park, 22.2 miles southeast of West Thumb Geyser Basin and 48.7 miles northeast of Jackson, WY. Earthquake activity in this location is not unusual. A total of 9 earthquakes of magnitude 3.0 or greater have occurred since 1962 within 16 miles of todays earthquake. The largest of these events was a magnitude 4.3 on August 21, 2003 located 22.5 miles south-southeast of West Thumb Geyser Basin and 44.2 miles north-northeast of Jackson, WY.
There have been no felt reports for todays earthquake at the time of this writing. Anyone who felt the earthquake is encouraged to fill out a survey form either on the University of Utah Seismograph Stations website: www.quake.utah.edu or the U.S. Geological Surveys website: earthquake.usgs.gov.
Earthquake Summary: Date (UTC): August 15, 2019 Time (UTC): 19:46 Date (local): August 15, 2019 Time (local): 01:46 PM MDT Latudute: 44 7.66’ N Longitude: 110 22.73’ W Preferred magnitude: 3.5 Ml