Oklahoma earthquakes

M3.3 earthquake 9 km SSE of Marshall, Oklahoma

A magnitude 3.3 earthquake struck 9 km SSE of Marshall, Oklahoma on Fri, Aug 28, 2015, 5:05 PM CDT (22:05 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.4 12 km ENE of Nash, Oklahoma. This one was a foreshock.

Crescent 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 (ml), minor
Local time
UTC
2015-08-28 22:05:54 UTC
Depth
5.2 km (3.2 mi), shallow
Epicenter
36.076° N, 97.581° W
Region
Oklahoma
Felt reports
3
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

3 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.6 km horizontally, 7.6 km in depth
Station coverage gap
106°
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 160 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes todayOklahoma earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us100035x6. Read Mon, Sep 28, 2026, 9:18 AM UTC.