Magnitude 4.3 near Soda Springs, ID


University of Utah Seismograph Stations

Released: January 25, 2018 09:45 PM MST

The University of Utah Seismograph Stations reports that a light earthquake of magnitude 4.3 (U.S. Geological Survey magnitude) occurred at 08:32 PM on January 25, 2018 (MST). The epicenter of the shock was located beneath the Bear River Valley in southeastern Idaho, 8 mi NW of the town of Georgetown, ID, and 9 miles SE of the town of Soda Springs, ID. This earthquake is an aftershock of a magnitude 5.3 earthquake that occurred on September 2, 2017, 9 miles east of Soda Springs. The magnitude 5.3 earthquake was followed by a very energetic aftershock sequence. Like the M 5.3 mainshock, today’s aftershock was widely felt in southeastern Idaho, western Wyoming, and northern Utah at least as far south as the Salt Lake Valley.

Anyone who felt the earthquake is encouraged to fill out a survey form either on the Seismograph Stations website: or the
US Geological Survey website:

Earthquake Summary:

Date (UTC): January 26, 2018 Time (UTC): 03:32

Date (local): January 25, 2018 Time (local): 08:32 PM MST

Latitude: 42 32.25′ N

Longitude: 111 24.75′ W

Preferred magnitude: 4.30 Mb (USGS)