M3.4 earthquake 10 km NNW of Arcadia, Oklahoma

A magnitude 3.4 earthquake struck 10 km NNW of Arcadia, Oklahoma on Thu, Aug 13, 2015, 8:59 AM CDT (13:59 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.3 3 km W of Cushing, Oklahoma. This one was a foreshock.

Map

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

The USGS’s account of the effects of this earthquake.

Felt (III) at Edmond. Also felt at Cushing, Oklahoma City and Tulsa.

From the USGS event page for us100031xr. U.S. Geological Survey text and figures are in the public domain.

23 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: at least 200 in the 60 days after this one and 127 in the 30 days before it.

The first 60 of at least 200.

From the USGS Earthquake Hazards Program and its partner networks, event us100031xr. Read Thu, Oct 1, 2026, 9:48 AM UTC.