Missouri earthquakes

M3.9 earthquake 4 km SSE of Bertrand, Missouri

A magnitude 3.9 earthquake struck 4 km SSE of Bertrand, Missouri on Tue, Feb 21, 2012, 3:58 AM CST (09:58 UTC), 8 km (5 mi) below the surface.

Bertrand forecast More in Missouri

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 3.9 (mw), minor
Local time: Tue, Feb 21, 2012, 3:58 AM CST
UTC: 2012-02-21 09:58:43 UTC
Depth: 7.8 km (4.9 mi), shallow
Epicenter: 36.873° N, 89.423° W
Region: Missouri
Felt reports: 880
Strongest shaking: V, moderate 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: V, moderate shaking
Map: Automatic

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

Did you feel it?

880 people reported to the USGS what they felt; the strongest reported shaking was V, moderate shaking.

Fault motion and ground failure

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

Faulting: Oblique reverse
Nodal plane 1: Strike 164°, dip 41°, rake 45°
Nodal plane 2: Strike 37°, dip 63°, rake 122°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.2 km horizontally, 0.5 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 38°
Stations used: 65

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 5 in the 30 days before it.

After

Before

Earthquakes today Missouri earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nm609348 (also filed as nm022212a, usp000jf65). Read Tue, Sep 22, 2026, 7:59 AM UTC.