Oklahoma earthquakes

M4.4 earthquake 12 km ENE of Nash, Oklahoma

A magnitude 4.4 earthquake struck 12 km ENE of Nash, Oklahoma on Sat, Oct 10, 2015, 4:20 AM CDT (09:20 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M4.7 4 km SW of Lambert, Oklahoma. This one was a foreshock.

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Map

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

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The earthquake

Magnitude: 4.4 (mwr), light
Local time: Sat, Oct 10, 2015, 4:20 AM CDT
UTC: 2015-10-10 09:20:43 UTC
Depth: 5.6 km (3.5 mi), shallow
Epicenter: 36.719° N, 97.931° W
Region: Oklahoma
Felt reports: 1,094
Strongest shaking: V, moderate 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: V, moderate shaking
Map: Automatic

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

Did you feel it?

1,094 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: Normal
Moment magnitude: 4.4 Mwr
Nodal plane 1: Strike 87°, dip 43°, rake -83°
Nodal plane 2: Strike 258°, dip 48°, rake -97°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 3.2 km horizontally, 4.1 km in depth
Magnitude uncertainty: ±0.03
Station coverage gap: 58°
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: at least 201 in the 60 days after this one and at least 199 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Oklahoma earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10003mnu (also filed as atlas20151010092043). Read Mon, Sep 28, 2026, 11:10 PM UTC.