Earthquake Guides
Earthquake Guides for Utah
Guides to Utah's fault lines, its largest earthquakes, aftershocks and swarms, and what to do before, during and after an earthquake.
Utah Earthquakes
Utah Faults and Earthquake History
Where Utah's earthquakes come from, the faults beside its cities and the largest earthquakes on record.
The Wasatch Fault
Where Utah's best-known fault runs, its segments, their last large earthquakes and the 50-year odds.
Wasatch Fault GuideUtah Fault Lines
The active faults beyond the Wasatch, from Cache Valley to St. George, and the cities beside them.
Utah Fault LinesUtah Earthquake History
The largest earthquakes in Utah's recorded history, from Marysvale in 1901 to Magna in 2020.
Largest Utah EarthquakesThe 2020 Magna Earthquake
Utah's M5.7 earthquake of March 18, 2020: the shaking, the damage and thousands of aftershocks.
2020 Utah EarthquakeEarthquake Safety
Earthquake Preparedness and Safety
What to do when the shaking starts, and what to have ready before it does.
Earthquake Science
How Earthquakes Behave
The patterns behind the dots on the live map: aftershocks, swarms and what shaking does to the ground.
Aftershocks
Why aftershocks follow a large earthquake, how big they get and how long they keep coming.
Aftershocks ExplainedEarthquake Swarms
What a swarm is, why some hit Utah County and whether a swarm means a big earthquake is coming.
Earthquake SwarmsLiquefaction
How shaking turns wet, sandy ground to something like quicksand, and where Utah is most at risk.
What Is LiquefactionLive Map
Utah Earthquakes Today
Pick a window from the last hour to the last 180 days to see where Utah's earthquakes were located, with the magnitude, depth and nearest town of each.