Arkansas earthquakes

M3.4 earthquake 4 km SSW of Guy, Arkansas

A magnitude 3.4 earthquake struck 4 km SSW of Guy, Arkansas on Wed, Feb 23, 2011, 6:24 PM CST (00:24 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M4.7 4 km NE of Greenbrier, Arkansas. This one was a foreshock.

Guy forecast More in Arkansas

Map

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

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The earthquake

Magnitude: 3.4 (md), minor
Local time: Wed, Feb 23, 2011, 6:24 PM CST
UTC: 2011-02-24 00:24:45 UTC
Depth: 3.9 km (2.4 mi), shallow
Epicenter: 35.287° N, 92.356° W
Region: Arkansas
Felt reports: 44
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

44 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Fault motion and ground failure

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

Faulting: Strike-slip
Nodal plane 1: Strike 120°, dip 90°, rake -30°
Nodal plane 2: Strike 210°, dip 60°, rake -180°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.5 km horizontally, 0.5 km in depth
Magnitude uncertainty: ±0.67
Depth from: From location
Station coverage gap: 54°
Stations used: 17

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 143 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Arkansas earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nm608462 (also filed as nm022411a, usp000hv0a). Read Sun, Sep 27, 2026, 2:57 PM UTC.