M3.5 earthquake 8 km SW of Waynoka, Oklahoma

A magnitude 3.5 earthquake struck 8 km SW of Waynoka, Oklahoma on Thu, Apr 16, 2015, 10:49 AM CDT (15:49 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M3.9 19 km W of Cleo Springs, Oklahoma. This one was a foreshock.

Map

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

The USGS’s account of the effects of this earthquake.

Felt at Okeene.

From the USGS event page for us2000270a. U.S. Geological Survey text and figures are in the public domain.

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

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: 118 in the 60 days after this one and 98 in the 30 days before it.

The first 60 of 118.

From the USGS Earthquake Hazards Program and its partner networks, event us2000270a. Read Thu, Oct 1, 2026, 10:53 AM UTC.