Oklahoma earthquakes

M4.8 earthquake 9 km SSE of Sparks, Oklahoma

A magnitude 4.8 earthquake struck 9 km SSE of Sparks, Oklahoma on Mon, Nov 7, 2011, 8:46 PM CST (02:46 UTC), 5 km (3 mi) below the surface.

Prague forecast More in Oklahoma

Map

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

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The earthquake

Magnitude: 4.8 (mwr), light
Local time: Mon, Nov 7, 2011, 8:46 PM CST
UTC: 2011-11-08 02:46:57 UTC
Depth: 5.0 km (3.1 mi), shallow
Epicenter: 35.531° N, 96.788° W
Region: Oklahoma
Felt reports: 16,034
Strongest shaking: VI, strong shaking
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: 31.9% of gravity
Peak ground velocity: 2.3 cm/s
Map: Automatic

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

Did you feel it?

16,034 people reported to the USGS what they felt; the strongest reported shaking was VIII, severe 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
Moment magnitude: 4.9 Mww
Nodal plane 1: Strike 4°, dip 74°, rake -173°
Nodal plane 2: Strike 272°, dip 83°, rake -15°

How well it is located

Reviewed by a seismologist.

Station coverage gap: 19°
Stations used: 342

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 49 in the 60 days after this one and 46 in the 30 days before it.

After

Before

Earthquakes today Oklahoma earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000jajb (also filed as usb0006lpf, iscgem17521561, atlas20111108024657). Read Tue, Sep 22, 2026, 9:10 AM UTC.