M3.3 earthquake 18 km SW of Dacoma, Oklahoma

A magnitude 3.3 earthquake struck 18 km SW of Dacoma, Oklahoma on Thu, Apr 21, 2016, 1:32 PM CDT (18:32 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.4 16 km SE of Waynoka, 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.

2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 197 in the 60 days after this one and 2 in the 30 days before it.

The first 60 of 197.

From the USGS Earthquake Hazards Program and its partner networks, event us20005kji. Read Tue, Sep 22, 2026, 3:09 AM UTC.