University of Utah Seismograph Stations
Released: September 24, 2017 1:00 PM MDT
The University of Utah Seismograph Stations reports that a minor earthquake of magnitude 3.4 occurred at 10:38 PM on Saturday,
September 23, 2017 (MDT), in southern Utah. The shock was located beneath the Sevier Plateau, 6 km ( 4 mi) east-southeast of the town
of Monroe, UT, and 18 km (11 mi) south of the town of Richfield, UT. The earthquake was reported felt in the towns of Monroe, Richfield,
and Joseph, Utah. It was followed by two small aftershocks, one of M 1.7 at 10:46 pm on Saturday night and the other of M 1.6 at 09:43
on Sunday morning.
Yesterday evening’s earthquake occurred within a seismically active area of Utah A total of 23 earthquakes of magnitude 3.0 or greater
have occurred within 25 km (16 mi) of the epicenter of this event since 1962. The largest of these events was a magnitude 5.2 on
October 04, 1967, 10.1km ( 6.3 mi) ESE of Sevier, UT.
Date (UTC): September 24, 2017 Time (UTC): 04:38
Date (local): September 23, 2017 Time (local): 10:38 PM MDT
Latitude: 38 36.39′ N
Longitude: 112 3.43′ W
Preferred magnitude: 3.4 Ml