M3.3 earthquake 11 km W of Hennessey, Oklahoma

A magnitude 3.3 earthquake struck 11 km W of Hennessey, Oklahoma on Sun, Mar 21, 2021, 9:37 PM CDT (02:37 UTC), 6 km (4 mi) below the surface.

Map

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

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

7 people reported to the USGS what they felt; the strongest reported shaking was V, moderate shaking.

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 96 in the 60 days after this one and 103 in the 30 days before it.

The first 60 of 96.

From the USGS Earthquake Hazards Program and its partner networks, event ok2021fqjl (also filed as us7000dlij). Read Tue, Sep 22, 2026, 4:50 PM UTC.