3.1

M3.1 Earthquake 22 km E of Dilley, TexasSeptember 10, 2026

2026-09-10 09:42:57 UTC (43 min ago) · approx. 2:42 AM UTC-7 local

MagnitudeM3.1(ml)
Time09:42 UTC2:42 AM UTC-7
Depth7.2 kmshallow crustal
Coordinates28.678°, -98.939°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 10, 2026 at 09:42 UTC, a magnitude 3.1 shallow crustal earthquake struck 22 km E of Dilley, Texas, at a depth of 7.2 km and coordinates 28.6780°, -98.9390°.

Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 28.68°, -98.94°

Earthquake Details

Magnitude
3.1 ml
Depth
7.2 km
shallow crustal
Location
28.6780°N
-98.9390°E

Technical Information

Event ID
tx2026rviiec
Event Type
earthquake
Status
✓ Reviewed
Significance
148
Stations Used
37
Azimuthal Gap
66.0°
Min Station Distance
0.200°
RMS Residual
0.30 sec
Last Updated
2026-09-10 10:00:27 UTC

Common Questions

How strong was the magnitude 3.1 earthquake near Dilley, Texas?

The magnitude 3.1 earthquake that struck 22 km E of Dilley, Texas on September 10, 2026 at 09:42 UTC had a depth of 7.2 km. For context, this was a minor earthquake typically detected only by instruments.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: tx2026rviiec). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 10, 2026). M3.1 Earthquake 22 km E of Dilley, TexasSeptember 10, 2026. Retrieved September 10, 2026 from https://www.earthquaketracker.org/earthquakes/event/tx2026rviiec/