M2.3 earthquake 9 km NNE of Johnson, Oklahoma

A magnitude 2.3 earthquake struck 9 km NNE of Johnson, Oklahoma on Wed, Mar 20, 2013, 9:23 PM CDT (02:23 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.3 3 km S of Spencer, Oklahoma. This one was a foreshock.

Map

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

4 people 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: 56 in the 60 days after this one and 8 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event usb000fq2j. Read Tue, Sep 22, 2026, 8:34 AM UTC.