Wyoming earthquakes

M1.8 earthquake 63 km ESE of West Yellowstone, Montana

A magnitude 1.8 earthquake struck 63 km ESE of West Yellowstone, Montana on Fri, Jul 16, 2021, 1:33 PM MDT (19:33 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.6 63 km SSE of Mammoth, Wyoming. This one was a foreshock.

West Yellowstone forecast More in Wyoming

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude: 1.8 (ML, local (Richter)), micro
Magnitude from: University of Utah Seismograph Stations
Local time: Fri, Jul 16, 2021, 1:33 PM MDT
UTC: 2021-07-16 19:33:53 UTC
Depth: 7.8 km (4.9 mi), shallow
Epicenter: 44.450° N, 110.357° W
Region: Wyoming
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.3 km horizontally, 1.2 km in depth
Magnitude uncertainty: ±0.02
Depth from: From location
Station coverage gap: 91°
Stations used: 7

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 181 in the 60 days after this one and 187 in the 30 days before it.

After

The first 60 of 181.

Before

Earthquakes today Wyoming earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60446607. Read Mon, Oct 5, 2026, 1:35 PM UTC.