M3.5 earthquake 12 km ESE of Byron, Oklahoma

A magnitude 3.5 earthquake struck 12 km ESE of Byron, Oklahoma on Wed, May 6, 2015, 9:10 AM CDT (14:10 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.0 6 km WNW of Lucien, 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.

4 people reported to the USGS what they felt; the strongest reported shaking was II, 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: 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 us20002c7x. Read Tue, Sep 22, 2026, 2:10 PM UTC.