Montana earthquakes

M1.7 earthquake 25 km SE of Mammoth, Wyoming

A magnitude 1.7 earthquake struck 25 km SE of Mammoth, Wyoming on Tue, Nov 15, 2016, 3:25 AM MST (10:25 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.4 45 km ENE of Warm River, Idaho. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.7 (ml), micro
Local time
UTC
2016-11-15 10:25:01 UTC
Depth
5.4 km (3.4 mi), shallow
Epicenter
44.783° N, 110.516° 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 0.8 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.44
Depth from
From location
Station coverage gap
223°, poorly surrounded by stations
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 54 in the 60 days after this one and 24 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60170757. Read Wed, Sep 30, 2026, 5:00 PM UTC.