Kansas earthquakes

M2.7 earthquake 8 km SE of Harper, Kansas

A magnitude 2.7 earthquake struck 8 km SE of Harper, Kansas on Sat, Jul 4, 2015, 1:10 AM CDT (06:10 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.4 7 km SSE of Byron, Oklahoma. This one was a foreshock.

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

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The earthquake

Magnitude: 2.7 (ML, local (Richter)), micro
Magnitude from: USGS National Earthquake Information Center
Local time: Sat, Jul 4, 2015, 1:10 AM CDT
UTC: 2015-07-04 06:10:10 UTC
Depth: 3.4 km (2.1 mi), shallow
Epicenter: 37.226° N, 97.961° W
Region: Kansas
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
2.7	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.152 · 19 stations
2.73	ML, local (Richter)	ISMPKANSAS	Final · ±0.152 · 19 stations

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 1.1 km horizontally, 2.7 km in depth
Magnitude uncertainty: ±0.15
Station coverage gap: 97°
Stations used: 27

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 us100031j4 (also filed as ismpkansas70118203). Read Thu, Oct 1, 2026, 10:29 AM UTC.