M3.3 earthquake 9 km SSE of Byron, Oklahoma

A magnitude 3.3 earthquake struck 9 km SSE of Byron, Oklahoma on Tue, Sep 22, 2015, 4:22 AM CDT (09:22 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.1 9 km NE of Wakita, 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 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 us20003mtc. Read Wed, Sep 23, 2026, 3:41 AM UTC.