M2.8 earthquake 9 km ESE of Chickasha, Oklahoma

A magnitude 2.8 earthquake struck 9 km ESE of Chickasha, Oklahoma on Thu, Dec 31, 2020, 7:31 PM CST (01:31 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M2.8 10 km SE of Ratliff City, Oklahoma. This one was a foreshock.

Map

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

15 people reported to the USGS what they felt; the strongest reported shaking was V, moderate 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: 199 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 199.

From the USGS Earthquake Hazards Program and its partner networks, event ok2021aada (also filed as us6000d4pi). Read Thu, Sep 24, 2026, 5:49 AM UTC.