Know the ground you live on.
Most Utahns live within a few miles of the Wasatch fault. FaultLine Utah turns the science about your address into plain language, then helps you get ready.
Know Your Ground
Know Your Ground
Nearby faults, liquefaction, building-code shaking, and what the 2020 Magna quake did at your address.
Look up an address →Make a Plan
Answer six questions and get a prep list in priority order: what to do this weekend, this month, and later.
Build your list →Is It Brick?
Unreinforced brick buildings are Utah's biggest earthquake risk. Learn the signs and what to do about them.
Check your building →The short version
43%
Chance of a magnitude 6.75 or larger earthquake in the Wasatch Front region in the next 50 years.
Working Group on Utah Earthquake Probabilities, 2016
140,000+
Unreinforced masonry (brick) buildings in Utah, by state and FEMA estimates. Most are homes.
FEMA; Utah Seismic Safety Commission (estimate)
No
Utah doesn't have a public earthquake early warning system yet. When it shakes, your preparation is the warning.
Utah Geological Survey, 2025
Magna was a warning shot
On March 18, 2020, a magnitude 5.7 earthquake rattled the Salt Lake Valley. It broke old brick, knocked out power, and gave scientists thousands of new recordings. What they learned about the valley's deep sediments changes how we think about the big one.
Read the Magna storyExplore Utah's fault lines
The Wasatch fault runs about 220 miles from southern Idaho to central Utah, along the foot of the mountains most of us look at every day. See it, and every other mapped fault, on one map.
Open the fault map