Over 2,500 Aftershocks Recorded Since Last Year’s Magna Earthquake

Mackenzie Cope Geology, News releases, Preparedness

Magna Earthquake Does Not Diminish the Risk of a Major M7 to M7.5 Earthquake Salt Lake City — Thurs., March 18, 2021 marks the one year anniversary of the moderate magnitude (M) 5.7 earthquake that struck northern Utah near Magna. The mainshock was widely felt across the Wasatch Front. Over 30,000 felt reports were received by U.S. Geological Survey (USGS) …

A clearer look at earthquake faults in Utah

jdougherty Geology

Thanks to a 4-year effort by the Utah Geological Survey, Utah now has a better look at Wasatch Front faults from southern Idaho to central Utah The overall length of the Wasatch fault, 240 miles, has not changed, but details to the existing faults have been added to the library. We now have 739 mapped miles of fault strands, compared …

Was the March 18, 2020, Magna Earthquake in the Forecast?

Mackenzie Cope Geology, Recent earthquakes

Utah Geological Survey has a 50-year forecast for earthquakes. In 2016, the Working Group on Utah Earthquake Probabilities (WGUEP) published a 50-year forecast for moderate to large earthquakes in the Wasatch Front region. They determined there was a 93% chance of having one or more earthquakes of magnitude 5 or larger in that time period. Given that high probability, the …

M6.5 quake shakes central Idaho

jdougherty Geology, Recent earthquakes

Should Utah be concerned? Not about this one. But we should still be prepared in general. Utahns are reporting shaking as far south as Salt Lake County. And reports continue to roll in from around northern Utah. Utah is not expected to have any damage from shaking from this quake. The University of Utah Seismograph stations tweeted that they expect …

UGS Resources on the Magna 5.7 Earthquake

Mackenzie Cope Geology

View the Utah Geological Survey’s database of geologic information from the March 18, 2020 earthquake, compiled the day of the earthquake and the days following. UGS Resources View the Utah Geological Survey’s database of geologic information from the March 18, 2020 earthquake, compiled the day of the earthquake and the days following. UGS Resources