M3.5 earthquake 8 km NNW of Arcadia, Oklahoma

A magnitude 3.5 earthquake struck 8 km NNW of Arcadia, Oklahoma on Tue, Dec 22, 2015, 10:39 AM CST (16:39 UTC), 6 km (3 mi) below the surface.

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

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.

26 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: 200 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 200.

From the USGS Earthquake Hazards Program and its partner networks, event us100048u7. Read Tue, Sep 22, 2026, 10:48 AM UTC.