M3.9 earthquake 5 km WNW of Lucien, Oklahoma

A magnitude 3.9 earthquake struck 5 km WNW of Lucien, Oklahoma on Fri, Apr 6, 2018, 10:07 AM CDT (15:07 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.6 5 km WNW of Lucien, 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.

38 people reported to the USGS what they felt; the strongest reported shaking was VI, strong 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: 117 in the 60 days after this one and 46 in the 30 days before it.

The first 60 of 117.

From the USGS Earthquake Hazards Program and its partner networks, event us2000dvlb. Read Tue, Sep 22, 2026, 7:37 PM UTC.