M2.7 earthquake 2 km NE of Red Rock, Oklahoma

A magnitude 2.7 earthquake struck 2 km NE of Red Rock, Oklahoma on Sat, Mar 21, 2015, 9:50 PM CDT (02:50 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.2 6 km W of Langston, Oklahoma. This one was a foreshock.

Map

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

1 person reported to the USGS what they felt; the strongest reported shaking was III, weak 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 201 in the 60 days after this one and at least 200 in the 30 days before it.

The first 60 of at least 201.

From the USGS Earthquake Hazards Program and its partner networks, event us10001pis. Read Wed, Sep 30, 2026, 5:06 AM UTC.