M3.1 earthquake western Texas

A magnitude 3.1 earthquake struck in western Texas on Mon, Jul 31, 2023, 4:29 PM CDT (21:29 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.9 8 km NE of Hermleigh, Texas. This one was a foreshock.

Map

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

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
3.1	ML, local (Richter)	TX	Preferred · Final · ±0 · 7 stations
2.8	mb_Lg, Lg-wave body	USGS National Earthquake Information Center	Reviewed · ±0.05 · 105 stations

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

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 35 in the 60 days after this one and 22 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event tx2023oxdt (also filed as us6000kwxm). Read Fri, Oct 2, 2026, 10:53 PM UTC.