Montana earthquakes

M1.6 earthquake 26 km SSW of Mammoth, Wyoming

A magnitude 1.6 earthquake struck 26 km SSW of Mammoth, Wyoming on Tue, Mar 11, 2014, 5:16 AM MDT (11:16 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.8 22 km S of Mammoth, Wyoming. This one was a foreshock.

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

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The earthquake

Magnitude
1.6 (ML, local (Richter)), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2014-03-11 11:16:27 UTC
Depth
6.5 km (4.1 mi), shallow
Epicenter
44.747° N, 110.780° W
Region
Montana
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 0.4 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.35
Depth from
From location
Station coverage gap
148°
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 94 in the 30 days before it.

After

The first 60 of at least 199.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60058992. Read Fri, Oct 2, 2026, 5:54 PM UTC.