Arkansas earthquakes

M3.3 earthquake 5 km WSW of Quitman, Arkansas

A magnitude 3.3 earthquake struck 5 km WSW of Quitman, Arkansas on Wed, Oct 5, 2011, 4:38 AM CDT (09:38 UTC), 5 km (3 mi) below the surface.

Quitman 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: 3.3 (Mw, moment), minor
Magnitude from: NM
Local time: Wed, Oct 5, 2011, 4:38 AM CDT
UTC: 2011-10-05 09:38:30 UTC
Depth: 4.6 km (2.9 mi), shallow
Epicenter: 35.368° N, 92.273° W
Region: Arkansas
Felt reports: 13
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
3.3	Mw, moment	NM	Preferred · Reviewed · ±0.701 · 4 stations
3.3	Mwr, regional moment	USGS National Earthquake Information Center	Reviewed

What happened

The USGS’s account of the effects of this earthquake.

Felt (III) at Quitman. Also felt at Cabot, Damascus, Greenbrier and Searcy.

From the USGS event page for nm609027. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

13 people reported to the USGS what they felt; the strongest reported shaking was III, weak 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 18°, dip 71°, rake 159°
Nodal plane 2: Strike 115°, dip 70°, rake 20°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.4 km horizontally, 0.5 km in depth
Magnitude uncertainty: ±0.70
Depth from: From location
Station coverage gap: 60°
Stations used: 14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 72 in the 60 days after this one and 7 in the 30 days before it.

After

The first 60 of 72.

Before

Earthquakes today Arkansas earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nm609027 (also filed as nm100511a, usp000j8y3). Read Thu, Oct 1, 2026, 12:00 PM UTC.