M2.9 earthquake 41 km SSE of Mammoth, Wyoming

A magnitude 2.9 earthquake struck 41 km SSE of Mammoth, Wyoming on Sat, Nov 26, 2016, 7:53 AM MST (14:53 UTC), 4 km (2 mi) below the surface.

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

Map

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

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.89	ML, local (Richter)	University of Utah Seismograph Stations	Preferred · Final · ±0.416 · 8 stations
2.9	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.416 · 8 stations

The USGS’s account of the effects of this earthquake.

Felt at Bozeman and Gardiner, Montana.

From the USGS event page for uu60171942. U.S. Geological Survey text and figures are in the public domain.

3 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 43 in the 60 days after this one and 29 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event uu60171942 (also filed as us10007ckd). Read Thu, Oct 1, 2026, 6:25 PM UTC.