M2.7 earthquake 4 km ESE of Helena, Oklahoma

A magnitude 2.7 earthquake struck 4 km ESE of Helena, Oklahoma on Thu, Mar 5, 2015, 2:57 PM CST (20:57 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.5 5 km N of Quinlan, Oklahoma. This one was a foreshock.

Map

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

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

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

The first 60 of 200.

From the USGS Earthquake Hazards Program and its partner networks, event us10001la9. Read Tue, Sep 22, 2026, 11:12 AM UTC.