Oklahoma earthquakes

M3.3 earthquake 1 km S of Marshall, Oklahoma

A magnitude 3.3 earthquake struck 1 km S of Marshall, Oklahoma on Sun, Mar 30, 2014, 3:07 AM CDT (08:07 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.4 12 km SE of Cedar Valley, Oklahoma. This one was a foreshock.

Covington forecastMore in Oklahoma

Map

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

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The earthquake

Magnitude
3.3 (mwr), minor
Local time
UTC
2014-03-30 08:07:05 UTC
Depth
2.5 km (1.6 mi), shallow
Epicenter
36.137° N, 97.624° W
Region
Oklahoma
Strongest shaking
IV, light shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

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

Strongest estimated
IV, light shaking
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

Fault motion and ground failure

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

Faulting
Strike-slip
Moment magnitude
3.3 Mwr
Nodal plane 1
Strike 130°, dip 75°, rake -25°
Nodal plane 2
Strike 227°, dip 66°, rake -164°

How well it is located

Reviewed by a seismologist.

Station coverage gap
114°
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usc000nwpa. Read Tue, Sep 22, 2026, 10:24 PM UTC.