M3.3 earthquake 7 km ENE of Hennessey, Oklahoma

A magnitude 3.3 earthquake struck 7 km ENE of Hennessey, Oklahoma on Wed, Aug 16, 2017, 10:52 PM CDT (03:52 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.6 6 km ENE of Edmond, Oklahoma. This one was a foreshock.

Map

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

12 people reported to the USGS what they felt; the strongest reported shaking was IV, light 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: 130 in the 60 days after this one and 58 in the 30 days before it.

The first 60 of 130.

From the USGS Earthquake Hazards Program and its partner networks, event us2000a902. Read Wed, Sep 23, 2026, 7:06 PM UTC.