M3.5 earthquake 4 km SW of Stillwater, Oklahoma

A magnitude 3.5 earthquake struck 4 km SW of Stillwater, Oklahoma on Wed, Jul 1, 2015, 12:15 PM CDT (17:15 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M4.5 4 km NNE of Crescent, 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 (V) at Stillwater. Also felt at Broken Arrow, Cushing, Oklahoma City and Perkins.

From the USGS event page for us10002mv7. U.S. Geological Survey text and figures are in the public domain.

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

160 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: at least 199 in the 60 days after this one and at least 200 in the 30 days before it.

The first 60 of at least 199.

From the USGS Earthquake Hazards Program and its partner networks, event us10002mv7. Read Sun, Oct 4, 2026, 5:13 PM UTC.