SOUTHERN UTAH – The U.S. Geological Service issued notice of a 3.5 magnitude earthquake at 1:02 p.m. today, seven miles west-northwest of Enoch, nine miles north northwest of Cedar City. Additional quakes have registered throughout the day of lesser magnitude, and a 3.7 magnitude at 7:47 p.m. in the same area, according to the University of Utah Seismology Stations listing.
The epicenter was in the Intermountain seismic belt which is, according to the USGS website, a prominent north-south-trending zone of recordied seismicity in the Intermountain West, and subject to “earthquake swarms,” which are clusters of earthquakes, with no main shocks, of maximum magnitude 3 to 4.
Earthquakes of occasional greater magnitude in the area have included a magnitude 6.5 in 1901 in Richfield, a group of three magnitude 5 and 6 quakes in Elsinore in 1921, and magnitude 5.9 near St. George in 1992.
For recent earthquakes in the Intermountain West, visit the University of Utah Seismology Stations listings here.
UPDATED 9:30 p.m. Reference to additional earthquakes in today’s cluster added.
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