M3.5 earthquake 6 km N of Dover, Oklahoma

A magnitude 3.5 earthquake struck 6 km N of Dover, Oklahoma on Thu, Apr 19, 2018, 2:20 AM CDT (07:20 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.7 10 km SSE of Marshall, 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.

6 people reported to the USGS what they felt; the strongest reported shaking was IV, light 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: 81 in the 60 days after this one and 68 in the 30 days before it.

The first 60 of 81.

From the USGS Earthquake Hazards Program and its partner networks, event us1000dnhf. Read Tue, Sep 22, 2026, 6:49 PM UTC.