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University of Utah Seismograph Stations @uussquake.bsky.social · 08/10/2026

Yellowstone Earthquake Update 09.24.26 – 10.07.26 Over the last two weeks, 18 earthquakes have been located in the Yellowstone Region. The largest was an M 2.0 near the South Entrance to Yellowstone National Park.

Over the last two weeks (Sept. 24 – Oct. 7, 2026) 18 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M 0.5 – 2.0.

The largest earthquake in the region was an M 2.0 on October 4, located about 8 miles north-northeast of the South Entrance to Yellowstone National Park.

For context, Yellowstone averages 64 earthquakes in a two-week period. For more information about Yellowstone earthquakes, visit quake.utah.edu

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University of Utah Seismograph Stations @uussquake.bsky.social · 01/10/2026

A swarm of 47 earthquakes was located near Milford, UT, that is related to ongoing EGS (Enhanced Geothermal Systems) development in the area.

For context, Utah averages 126 earthquakes in a two week period. For more information about enhanced geothermal system (EGS), visit https://en.wikipedia.org/wiki/Enhanced_geothermal_system.

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University of Utah Seismograph Stations @uussquake.bsky.social · 01/10/2026

Utah Earthquake Update 09.17.26 – 09.30.26 Over the last two weeks, 97 earthquakes have been located in the Utah Region. The magnitudes ranged from 0.2 to 3.1. The largest earthquake, an M 3.1 on September 24, was located near Little America, WY.

Over the last two weeks, 97 earthquakes have been located in the Utah Region. The magnitudes ranged from 0.2 to 3.1. The largest earthquake, an M 3.1 on September 24, was located near Little America, WY. A swarm of 47 earthquakes was located near Milford, UT that is related to ongoing EGS (Enhanced Geothermal Systems) development in the area.

Over the last two weeks (September 17 – 30, 2026) 97 earthquakes have been located in the Utah Region. The magnitudes ranged M 0.2 to 3.1.

The largest earthquake in the reporting period was an M 3.1 on September 24, located about 1 mile north-northeast of Little America, WY.

A swarm of 47 earthquakes, located about 14 miles northeast of Milford, UT, is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The magnitudes range from M 0.2 to 2.2, with 64% being M < 1.5.

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University of Utah Seismograph Stations @uussquake.bsky.social · 24/09/2026

Yellowstone Earthquake Update 09.10.26 – 09.23.26 Over the last two weeks, 24 earthquakes have been located in the Yellowstone Region. The largest was an M 1.6 south-southwest of Mammoth, WY.

Over the last two weeks (September 10 – 23, 2026) 24 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M 0.7 – 1.6.

The largest earthquake in the region was an M 1.6 on September 20, located about 14 miles south-southwest of Mammoth, WY.

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University of Utah Seismograph Stations @uussquake.bsky.social · 17/09/2026

Only 54 earthquakes are not part of a swarm of 316 earthquakes located near Milford, UT, that is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The largest earthquake, an M 3.8 on September 11, was located near Little America, WY.

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University of Utah Seismograph Stations @uussquake.bsky.social · 17/09/2026

Utah Earthquake Update 09.03.26 – 09.16.26 Over the last two weeks, 370 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.2 to 3.8.

Over the last two weeks, 370 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.2 to 3.8. Only 54 earthquakes are not part of a swarm of 316 earthquakes located near Milford, UT that is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The largest earthquake, an M 3.8 on September 11, was located near Little America, WY.

Over the last two weeks (September 3 – 16, 2026) 370 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.2 to 3.8.

The largest earthquake in the reporting period was an M 3.8 on September 11, located about 19 miles north of Little America, WY.

A swarm of 316 earthquakes, located about 14 miles northeast of Milford, UT, is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The magnitudes range from M -0.1 to 3.1, with 64% being M < 1.5.

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University of Utah Seismograph Stations @uussquake.bsky.social · 10/09/2026

Yellowstone Earthquake Update 08.27.26 – 09.09.26 Over the last two weeks, 55 earthquakes have been located in the Yellowstone Region. The largest was an M 3.4 northeast of Moran, WY. We also located a swarm of 24 earthquakes north-northwest of West Yellowstone, MT.

Over the last two weeks (Aug. 27 – Sept. 9, 2026), 55 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M -0.1 – 3.4.

A swarm of 24 small earthquakes on September 8 was located about 7 miles north-northwest of West Yellowstone, MT. The magnitudes ranged from M -0.1 – 2.7.

The largest earthquake in the region was an M 3.4 on September 6, located about 20 miles northeast of Moran, WY.

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University of Utah Seismograph Stations @uussquake.bsky.social · 03/09/2026

Only 48 earthquakes are not part of a swarm of 364 earthquakes located near Milford, UT, that are related to ongoing EGS (Enhanced Geothermal Systems) development in the area.

Magnitude vs Time plot for the last two weeks, August 20 – September 2, 2026.

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University of Utah Seismograph Stations @uussquake.bsky.social · 03/09/2026

Utah Earthquake Update 08.20.26 – 09.02.26 Over the last two weeks, 412 earthquakes have been located in the Utah Region. The magnitudes ranged from 0.1 to 3.1. The largest earthquake, an M 3.1 on August 20, was located near Little America, WY.

Over the last two weeks, 412 earthquakes have been located in the Utah Region. The magnitudes ranged from 0.1 to 3.1. Only 48 earthquakes are not part of a swarm of 364 earthquakes located near Milford, UT that is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The largest earthquake, an M 3.1 on August 20, was located near Little America, WY.

Over the last two weeks (Aug. 20 – Sept. 2, 2026) 412 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.1 to 3.1.

The largest earthquake in the reporting period was an M 3.1 on August 20, located about 1 mile north-northwest of Little America, WY. This same area also had an M 3.0 on September 2.

A swarm of 364 earthquakes, located about 14 miles northeast of Milford, UT, is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The magnitudes range from M -0.1 to 2.3, with 75% being M < 1.5.

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University of Utah Seismograph Stations @uussquake.bsky.social · 01/09/2026

@utahfootball.bsky.social fans, get ready for a new season and new #UteQuake signals by shaking a full Rice Eccles Stadium this Thursday. Here's the Mana Carvalho punt return from last year! Let's welcome the Morgan Scalley era for Utah Football with a win. @utah.edu

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University of Utah Seismograph Stations @uussquake.bsky.social · 27/08/2026

Yellowstone Earthquake Update 08.13.26 – 08.26.26 Over the last two weeks, 28 earthquakes have been located in the Yellowstone Region. The largest was an M 1.8 north-northwest of Pahaska Tepee, WY.

Over the last two weeks (August 13 – 26, 2026), 28 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M -0.1 – 1.8.

The largest earthquake in the region was an M 1.8 on August 22, located about 14 miles north-northwest of Pahaska Tepee, WY.

Magnitude vs Time plot for the last two weeks, August 13 – 26, 2026.

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University of Utah Seismograph Stations @uussquake.bsky.social · 20/08/2026

Better earthquake forecasts start with accurate magnitudes. UUSS researchers published a new catalog of directly measured moment magnitudes down to Mw0.54 (vs converting from regional magnitudes) reducing bias in seismic hazard analysis and enabling tracking crustal stress. doi.org/10.1785/0220...

doi.org

Toward Improved Seismic Hazard Analysis Using Spectral Modeling to Estimate the Moment Magnitudes of Small Earthquakes | Seismological Research Letters | GeoScienceWorld

Abstract. Computing magnitudes is a key part of characterizing earthquakes. They are especially important for developing the magnitude–frequency

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University of Utah Seismograph Stations @uussquake.bsky.social · 20/08/2026

Over the last two weeks, 242 quakes occurred in the Utah Region. Magnitudes ranged M 0.1 – 3.3. The largest, on August 11, was located near Little America, WY. A swarm of 202 quakes located near Milford, UT, is related to EGS (Enhanced Geothermal Systems) development in the area.

Over the last two weeks, 242 earthquakes have been located in the Utah Region. The magnitudes ranged from 0.1 to 3.3. The largest earthquake, on August 11, was located near Little America, WY. A swarm of 202 earthquakes located near Milford, UT, is related to ongoing EGS (Enhanced Geothermal Systems) development in the area.

Over the last two weeks (August 6 – 19, 2026), 242 earthquakes have been located in the Utah Region. The magnitudes ranged M 0.1 to 3.3.

The largest earthquake in the reporting period was an M 3.3 on August 11, located about 2 miles northwest of Little America, WY

A swarm of 202 earthquakes, located about 12 miles northeast of Milford, UT, is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The magnitudes range from M 0.1 to 2.6, with 79% being M < 1.5.

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University of Utah Seismograph Stations @uussquake.bsky.social · 18/08/2026

Earthquake shaking decreases with distance from the epicenter. So, if the earthquake occurred below America First Field instead of 12 miles away, the earthquake signal would be so much bigger that you wouldn’t even see the shaking from RSL fans! (2/2)

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University of Utah Seismograph Stations @uussquake.bsky.social · 18/08/2026

Is RSL-fan shaking the same as a magnitude 2.8 earthquake? Not quite! The shaking is similar in scale because the earthquake is far away. (1/2). #RSLquake #UteQuake @realsaltlake.com

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University of Utah Seismograph Stations @uussquake.bsky.social · 13/08/2026

Yellowstone Earthquake Update 07.30.26 – 08.12.26 Over the last two weeks, 31 earthquakes have been located in the Yellowstone Region. The largest was an M 2.0 south- southwest of Cooke City, MT.

Over the last two weeks, 31 earthquakes have been located in the Yellowstone Region. The largest was an M 2.0 south- southwest of Cooke City, MT.

Over the last two weeks (July 30 – Aug. 12, 2026) 31 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M 0.1 – 2.0.

The largest earthquake in the region was an M 2.0 on August 5, located about 17 miles south-southwest of Cooke City, MT.

Magnitude vs Time plot for the last two weeks, July 30 – August 12, 2026.

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University of Utah Seismograph Stations @uussquake.bsky.social · 06/08/2026

Over the last two weeks, 102 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.4 to 3.3. The largest quake, on July 25, was located near Little America, WY. An additional 25 earthquakes occurred in an area of ongoing seismicity near Circleville, UT.

Over the last two weeks (July 23 – August 5, 2026), 102 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.4 to 3.3.

The largest earthquake in the reporting period was an M 3.3 on July 25, located about 1 mile northwest of Little America, WY.

A swarm of 25 earthquakes, located about 2 miles west of Circleville, Utah, occurred July 23 to 31. Magnitudes ranged from M 1.0 to 2.6.

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University of Utah Seismograph Stations @uussquake.bsky.social · 30/07/2026

Yellowstone Earthquake Update July 16 – 29, 2026 Over the last two weeks, 35 earthquakes have been located in the Yellowstone Region. The largest was an M 3.3 south-southeast of Canyon Village, YNP.

Over the last two weeks (July 16 – 29, 2026) 35 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M -0.1 – 3.3.

The largest earthquake in the region was an M 3.3 on July 16, located about 5 miles south-southeast of Canyon Village, YNP.

A swarm of 13 small earthquakes on July 17 was located about 10 miles north-northeast of Old Faithful, YNP. The magnitudes ranged from M 0.5 – 1.5.

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University of Utah Seismograph Stations @uussquake.bsky.social · 27/07/2026

Over the last two weeks, 96 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.1 to 3.5. The largest earthquake, on July 14, was located near Little America, WY. An ongoing swarm of 22 earthquakes was located near Circleville, UT

Over the last two weeks (July 9 – 22, 2026) 96 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.1 to 3.5.

The largest earthquake in the reporting period was an M 3.5 on July 14, located about 1 mile
north-northwest of Little America, WY. This same area also had two M 3.2's on July 9 and July 16.

An ongoing swarm of 22 earthquakes was located about 2 miles west of Circleville, UT. These earthquakes occurred July 14 – 22 with M 0.6 – 2.1.

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University of Utah Seismograph Stations @uussquake.bsky.social · 16/07/2026

Yellowstone Earthquake Update: Over the last two weeks (July 2 – 15, 2026), 19 earthquakes have been located in the Yellowstone Region. The largest was an M 1.6 northeast of Moran, WY.

Over the last two weeks, 19 earthquakes have been located in the Yellowstone Region. The largest was an M 1.6 northeast of Moran, WY.

Over the last two weeks (July 2 – 15, 2026), 19 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M -0.7 – 1.6.

The largest earthquake in the region was an M 1.6 on July 14, located about 16 miles northeast of Moran, WY.

Magnitude vs Time plot for the last two weeks, July 2 – 15.

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University of Utah Seismograph Stations @uussquake.bsky.social · 09/07/2026

Over the last two weeks, 187 quakes have been located in the Utah Region. Magnitudes ranged from -0.1 to 3.3. The largest quake, on June 26, was located near Little America, WY. 142 quakes located near Milford, UT due to EGS (Enhanced Geothermal Systems) development in the area.

Over the last two weeks, 187 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.1 to 3.3. The largest earthquake, on June 26, was located near Little America, WY. A swarm of 142 earthquakes was located near Milford, UT is related to ongoing EGS (Enhanced Geothermal Systems) development in the area.

Over the last two weeks (June 25 – July 8, 2026) 187 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.1 to 3.3.

The largest earthquake in the reporting period was an M 3.3 on June 26, located about 1 mile north-northwest of Little America, WY.

A swarm of 142 earthquakes, located about 14 miles northeast of Milford, UT, is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The magnitudes range from M -0.1 to 1.8, with 94% being M < 1.5.

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University of Utah Seismograph Stations @uussquake.bsky.social · 02/07/2026

Yellowstone Earthquake Update: Over the last two weeks, 58 earthquakes have been located in the Yellowstone Region. The largest was an M 2.3 north-northeast of West Yellowstone, MT.

Over the last two weeks, 58 earthquakes have been located in the Yellowstone Region. The largest was an M 2.3 north-northeast of West Yellowstone, MT.

A swarm of 20 earthquakes, located 16 miles north-northeast of West Yellowstone, MT was located on June 22 – 25. The magnitudes ranged from M 0.2 – 2.1.

The largest earthquake in the region was an M 2.3 on June 21, located about 11 miles northeast of West Yellowstone, MT.

Magnitude vs Time plot for the last two weeks, June 18 – July 1.

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University of Utah Seismograph Stations @uussquake.bsky.social · 25/06/2026

Over the last two weeks, 110 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.3 to 3.1. The largest earthquake on June 14, was located near Little America, WY. A swarm of 55 earthquakes was located near Malad City, ID on June 14 – 15.

Over the last two weeks (June 11 – 24, 2026) 110 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.3 to 3.1.

The largest earthquake in the reporting period was an M 3.1 on June 14, located about 1 mile north-northwest of Little America, WY.

A swarm of 55 earthquakes was located about 1 mile east of Malad City, ID. These earthquakes occurred June 14– 15 with M 0.6 – 2.6.

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University of Utah Seismograph Stations @uussquake.bsky.social · 25/06/2026

Aerial operations fighting the Bonneville Fire recorded at seismic station RBU located in Red Butte Canyon. @uussquake.bsky.social would like to thank all the firefighters for protecting the @utah.edu and the @uofuhealth.bsky.social and the surrounding area.

Satellite imagery showing the outline (red line) of the Bonneville Fire near the University of Utah, University of Utah Hospital, and surrounding areas. Additionally, the location of UUSS seismic station RBU (red triangle) and UUSS headquarters in the University of Utah campus (red star).

Seismic recordings at station RBU (Red Butte Canyon, Utah) on June 20, 2026, from 18:00 –21:00 MDT showing seismic signals, created from overflying helicopters/planes (data spikes starting ~19:00 MDT.

Seismic recordings at station RBU (Red Butte Canyon, Utah) on June 21, 2026, from 07:00 –12:30 MDT showing seismic signals, created from overflying helicopters/planes (data spikes starting ~07:00 MDT.

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University of Utah Seismograph Stations @uussquake.bsky.social · 18/06/2026

Yellowstone Earthquake Update: Over the last two weeks, 60 earthquakes have been located in the Yellowstone Region. The largest was an M 2.4 south-southeast of Lake, YNP. There were 2 small swarms during this period.

Over the last two weeks, 60 earthquakes have been located in the Yellowstone Region. The largest was an M 2.4 south-southeast of Lake, YNP. There were 2 small swarms during this period.

swarm of 16 small earthquakes on June 14 – 15 was located about 10 miles north-northeast of Old Faithful, YNP.
The magnitudes ranged from M 0.5 – 1.6.

Another swarm of 25 earthquakes, located ~ 12 miles south-southeast of Lake, YNP, occurred June 6 – 9. The magnitudes ranged from M 0.3 – 2.4. The swarm includes the largest earthquake for this reporting period, an M 2.4 on June 7.

Magnitude vs Time plot for the last two weeks, June 4 – 17.

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University of Utah Seismograph Stations @uussquake.bsky.social · 11/06/2026

Utah Earthquake Update 05.28.26 – 06.10.2026 Over the last two weeks 29 earthquakes have been located in the Utah Region. The largest was an M 3.1 west-northwest of Little America, WY.

The largest earthquake in the last two weeks was an M 3.1 on June 5, located about 2 miles west-northwest of Little America, WY.

Magnitude vs Time plot for the last two weeks. May 28 – June 10, 2026.

Utah Earthquake Update
Over the last two weeks (05.28.26 – 06.10.2026), 29 earthquakes have been located in the Utah Region. The largest was an M 3.1 west-northwest of Little America, WY. The magnitudes ranged M 0.3 to 3.1.

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University of Utah Seismograph Stations @uussquake.bsky.social · 04/06/2026

Yellowstone Earthquake Update: Over the last two weeks 11 earthquakes have been located in the Yellowstone Region. The largest was an M 1.8 south-southeast of West Thumb, WY.

Magnitude vs Time plot for the last two weeks. May 21 - June 3

Zoom into the largest earthquake. The largest earthquake in
the region was an M 1.8 on May 24, located about 18 miles south-southeast of West Thumb, WY.

Map of Yellowstone earthquakes. Over the last two weeks
(May 21 – June 3, 2026) 11 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M 0.2 – 1.8.

Over the last two weeks 11 earthquakes have been located in the Yellowstone Region. The largest was an M 1.8 south-southeast of West Thumb, WY.

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Reposted by University of Utah Seismograph Stations

Brian Maffly @brianmaffly.bsky.social · 28/05/2026

By reanalyzing archived seismic data, @utah.edu seismologists have confirmed 10 quakes beneath northeast Utah and southwest Wyoming since 1979 at depths below Earth’s crust in the mantle. @uussquake.bsky.social @uofu-science.bsky.social

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University of Utah Seismograph Stations @uussquake.bsky.social · 28/05/2026

Over the last two weeks, 126 earthquakes have been located in the Utah Region. The magnitudes ranged from 0.1 to 3.8. The largest earthquake on May 15, was located northwest of Montpelier, ID.

Over the last two weeks (May 14 – 27, 2026) 126 earthquakes have been located in the Utah Region. The magnitudes ranged M 0.1 to 3.8.

The largest earthquake in the reporting period was an M 3.8 on May 15, located about 11 miles northwest of Montpelier, ID.

Magnitude versus Time plot for Earthquakes in the Utah Region, May 14 – 27, 2026.

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University of Utah Seismograph Stations @uussquake.bsky.social · 21/05/2026

Over the last two weeks 29 earthquakes have been located in the Yellowstone Region. The largest was an M 2.0 north of Pahaska Tepee, WY.

Over the last two weeks (May 7 – 20, 2026) 29 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M 0.5 – 2.0.

The largest earthquake in the region was an M 21.0 on May 20, located about 12 miles north of Pahaska Tepee, WY.

Magnitude vs. Time plot of Earthquakes in the Yellowstone Region, May 7 – 20, 2026.

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University of Utah Seismograph Stations @uussquake.bsky.social · 19/05/2026

Article from @UUSSquake’s Sean Hutchings on Utah’s quake prediction model using data from the 2020 Magna quake. Added terrain and underground variability helps, but found better subsurface basin mapping is key to improving EQ forecasting along the Wasatch. doi.org/10.1093/gji/...

doi.org

Simulating Broadband (0 - 3 Hz) Ground Motion for the 2020 Mw 5.7 Magna, Utah, Earthquake using the Wasatch Front Community Velocity Model with Stochastic Velocity Perturbations and Topography

Summary. The Wasatch Front Community Velocity Model (WFCVM) is the most complete and detailed Earth model for the Wasatch Front region in north-central Uta

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University of Utah Seismograph Stations @uussquake.bsky.social · 14/05/2026

Over the last two weeks, 134 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.2 to 3.1. The largest earthquake on May 3 was located east-northeast of Panguitch, UT.

Over the last two weeks (April 30 – May 13, 2026) 134 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.2 to 3.1.

The largest earthquake in the reporting period was an M 3.1 on May 3, located about 15 miles east-northeast of Panguitch, UT.

Magnitude versus Time plot for Earthquakes in the Utah Region, April 30 – May 13, 2026.

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University of Utah Seismograph Stations @uussquake.bsky.social · 07/05/2026

Over the last two weeks, 19 earthquakes have been located in the Yellowstone Region. The largest was an M 1.5 east-northeast of West Yellowstone, MT.

Over the last two weeks (April 23 – May 6, 2026) 19 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M 0.0 – 1.5.

The largest earthquake in the region was an M 1.5 on May 6, located about 16 miles east-northeast of West Yellowstone, MT.

Magnitude vs. Time plot of Earthquakes in the Yellowstone Region, April 23 – May 6, 2026

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University of Utah Seismograph Stations @uussquake.bsky.social · 30/04/2026

Over the last two weeks, 155 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.3 to 3.6. The largest earthquake on April 19, was part of a swarm of 109 earthquakes located south of Kanosh, UT.

Over the last two weeks (April 16 – 29, 2026) 155 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.3 to 3.6.

The largest earthquake in the reporting period was an M 3.6 on April 19, located about 6 miles south-southwest of Kanosh, UT. This is part of a swarm of 109 earthquakes form April 19 – 22 with magnitudes from 0.6 to 3.6 including 4 M > 3.

Magnitude versus Time plot for Earthquakes in the Utah Region, April 16 – 29,2026

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University of Utah Seismograph Stations @uussquake.bsky.social · 23/04/2026

Yellowstone Earthquake Update: Over the last two weeks, 55 earthquakes have been located in the Yellowstone Region. The largest was an M 2.5 south of Mammoth, WY.

Over the last two weeks, 55 earthquakes have been located in the Yellowstone Region. The largest was an M 2.5 south of Mammoth, WY.

Over the last two weeks (April 9 – 22, 2026) 55 earthquakes have been located in the Yellowstone Region. The magnitudes ranged M -1.1 – 2.5.

The largest earthquake in the region, an M 2.5 was part of a swarm of 11 small earthquakes on April 13 – 14. It was located about 14 miles south of Mammoth, WY. The magnitudes ranged from M 0.7 – 2.5.

Magnitude versus Time plot for Earthquakes in the Yellowstone Region, April 9 – 22, 2026

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University of Utah Seismograph Stations @uussquake.bsky.social · 16/04/2026

Over the last two weeks, 252 earthquakes have been located in the Utah Region. The magnitudes ranged from -0.4 to 2.5. The largest earthquake on April 12, was located south of Cedar City, UT.

Over the last two weeks (April 2 – 15, 2026) 252 earthquakes have been located in the Utah Region. The magnitudes ranged M -0.4 to 2.5.

The largest earthquake in the reporting period was an M 2.5 on April 12, located about 8 miles south of Cedar City, UT.

A swarm of 215 earthquakes, located about 12 miles northeast of Milford, UT, is related to ongoing EGS (Enhanced Geothermal Systems) development in the area. The magnitudes range from M -0.4 to 2.5, with 73% being M < 1.5.

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University of Utah Seismograph Stations @uussquake.bsky.social · 16/04/2026

Join us at 10:15 a.m. for the Great Utah ShakeOut to practice your Drop, Cover, and Hold On! www.shakeout.org/utah/

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University of Utah Seismograph Stations @uussquake.bsky.social · 13/04/2026

New article from @UUSSquake highlights an M4.1 quake near Vernal Utah. It's depth and unique properties likely indicate a thermal runaway at the Wyoming craton edge, where strain builds and releases via faulting. doi.org/10.1785/0320...

doi.org

The 10 September 2025 Mw 4.1 Earthquake in Northeastern Utah, United States: An Archetypal Continental Mantle Event | The Seismic Record | GeoScienceWorld

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University of Utah Seismograph Stations @uussquake.bsky.social · 10/04/2026

UUSS seismologist Dr. Jamie Farrell highlights new research by Cao et al. showing Yellowstone’s magma can form from tectonic forces alone, with no mantle plume required, reshaping our understanding of the park’s volcanic system and hazards. www.science.org/doi/abs/10.1...

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