M3.4 earthquake 7 km ENE of Hennessey, Oklahoma

A magnitude 3.4 earthquake struck 7 km ENE of Hennessey, Oklahoma on Tue, Feb 20, 2018, 6:18 PM CST (00:18 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M3.6 1 km SSE of Renfrow, Oklahoma. This one was a foreshock.

Map

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

6 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: 131 in the 60 days after this one and 57 in the 30 days before it.

The first 60 of 131.

From the USGS Earthquake Hazards Program and its partner networks, event us2000d5n0. Read Tue, Sep 22, 2026, 6:01 AM UTC.