Yellowstone, WY – A small sequence of earthquakes struck near Mammoth Hot Springs in Yellowstone National Park late Tuesday morning, according to the University of Utah Seismograph Stations.
The largest quake, a magnitude 3.7, occurred at 7:22 a.m. local time (13:22 UTC), centered about 22 kilometers south-southwest of Mammoth, Wyoming, at a depth of 7.2 kilometers. Two smaller tremors followed—a 2.7 magnitude at 7:00 a.m. and a 2.5 magnitude just after 9:00 a.m.—all clustered within the same area along the park’s northwest boundary.
According to the U.S. Geological Survey, light shaking may have been felt near Mammoth Hot Springs and surrounding regions, though no damage or injuries have been reported. As of Tuesday afternoon, only a few “Did You Feel It?” responses had been logged.
The University of Utah, which monitors seismic activity across the Yellowstone region, confirmed all three events were reviewed and consistent with natural tectonic movement. Yellowstone frequently experiences minor earthquake swarms—most are too small to be felt but are closely tracked due to the park’s geologic activity.
Residents and visitors are encouraged to report any shaking to the USGS “Did You Feel It?” program to help track intensity levels across the area.
