Kansas earthquakes

M3.4 earthquake 4 km WSW of Freeport, Kansas

A magnitude 3.4 earthquake struck 4 km WSW of Freeport, Kansas on Wed, Feb 4, 2015, 7:20 AM CST (13:20 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.2 8 km NE of Cherokee, Oklahoma. This one was a foreshock.

Anthony forecast More in Kansas

Map

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

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The earthquake

Magnitude: 3.4 (Mwr, regional moment), minor
Magnitude from: USGS National Earthquake Information Center
Local time: Wed, Feb 4, 2015, 7:20 AM CST
UTC: 2015-02-04 13:20:31 UTC
Depth: 5.0 km (3.1 mi), shallow
Epicenter: 37.189° N, 97.901° W
Region: Kansas
Felt reports: 13
Strongest shaking: IV, light shaking
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
3.4	Mwr, regional moment	USGS National Earthquake Information Center	Preferred · Reviewed · 5 stations
3.52	ML, local (Richter)	ISMPKANSAS	Final · ±0.276 · 16 stations

What happened

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

Felt (IV) at Bluff City and (III) at Anthony. Also felt at Conway Springs, Danville, Freeport and Kingman. Felt at Stillwater, Oklahoma.

From the USGS event page for usc000tlha. U.S. Geological Survey text and figures are in the public domain.

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: IV, light shaking
Map: Automatic

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

Did you feel it?

13 people reported to the USGS what they felt; the strongest reported shaking was VI, strong shaking.

Fault motion and ground failure

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

Faulting: Oblique normal
Moment magnitude: 3.4 Mwr
Nodal plane 1: Strike 44°, dip 60°, rake -145°
Nodal plane 2: Strike 295°, dip 60°, rake -35°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 1.9 km horizontally, 1.7 km in depth
Depth from: OPERATOR_ASSIGNED
Station coverage gap: 57°
Stations used: 37

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 at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Kansas earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usc000tlha (also filed as ismpkansas70072698). Read Thu, Oct 1, 2026, 7:26 PM UTC.