Kansas earthquakes

M3.5 earthquake 4 km S of Harper, Kansas

A magnitude 3.5 earthquake struck 4 km S of Harper, Kansas on Sun, Jan 4, 2015, 4:55 AM CST (10:55 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.8 4 km NE of Hunter, Oklahoma. This one was a foreshock.

Harper forecast More in Kansas

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 3.5 (mb_lg), minor
Local time: Sun, Jan 4, 2015, 4:55 AM CST
UTC: 2015-01-04 10:55:39 UTC
Depth: 4.9 km (3.0 mi), shallow
Epicenter: 37.245° N, 98.023° W
Region: Kansas
Felt reports: 8
Strongest shaking: III, weak 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: III, weak shaking
Map: Automatic

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

Did you feel it?

8 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 3.0 km horizontally, 5.2 km in depth
Magnitude uncertainty: ±0.05
Depth from: FROM_LOCATION
Station coverage gap: 25°
Stations used: 82

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

Earthquakes today Kansas earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usc000tblj (also filed as ismpkansas70063053). Read Tue, Sep 22, 2026, 4:05 PM UTC.