Oklahoma earthquakes

M4.0 earthquake 1 km W of Cushing, Oklahoma

A magnitude 4.0 earthquake struck 1 km W of Cushing, Oklahoma on Thu, Sep 24, 2015, 8:16 PM CDT (01:16 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.3 3 km W of Cushing, Oklahoma. This one was a foreshock.

Cushing forecast More in Oklahoma

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 4.0 (mwr), light
Local time: Thu, Sep 24, 2015, 8:16 PM CDT
UTC: 2015-09-25 01:16:37 UTC
Depth: 2.9 km (1.8 mi), shallow
Epicenter: 35.987° N, 96.787° W
Region: Oklahoma
Felt reports: 156
Strongest shaking: VI, strong shaking
PAGER alert: Green
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: VI, strong shaking
Peak ground acceleration: 15.6% of gravity
Peak ground velocity: 1.3 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

156 people reported to the USGS what they felt; the strongest reported shaking was VI, strong shaking.

Estimated impact

The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.

Alert level: Green: little or no damage or loss of life expected

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: 4.0 Mwr
Nodal plane 1: Strike 60°, dip 73°, rake -168°
Nodal plane 2: Strike 326°, dip 78°, rake -17°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 1.9 km horizontally, 4.8 km in depth
Magnitude uncertainty: ±0.04
Station coverage gap: 76°
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.

Earthquakes today Oklahoma earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20003nwb (also filed as atlas20150925011637). Read Mon, Sep 21, 2026, 10:53 PM UTC.