M3.3 earthquake 11 km W of Jefferson, Oklahoma

A magnitude 3.3 earthquake struck 11 km W of Jefferson, Oklahoma on Sat, Aug 23, 2014, 6:22 AM CDT (11:22 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.3 7 km SW of Danville, Kansas. This one was a foreshock.

Map

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

6 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: at least 201 in the 60 days after this one and 121 in the 30 days before it.

The first 60 of at least 201.

From the USGS Earthquake Hazards Program and its partner networks, event usb000s5ne. Read Tue, Sep 29, 2026, 1:13 AM UTC.