M3.1 earthquake 16 km ENE of Thomas, Oklahoma

A magnitude 3.1 earthquake struck 16 km ENE of Thomas, Oklahoma on Tue, Apr 17, 2018, 3:57 AM CDT (08:57 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.6 16 km SSE of Waynoka, Oklahoma. This one was a foreshock.

Map

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

7 people reported to the USGS what they felt; the strongest reported shaking was IV, light 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: 51 in the 60 days after this one and 20 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us2000e1ev. Read Mon, Sep 21, 2026, 4:31 PM UTC.