2.5

M2.5 Earthquake 38 km NNW of Toyah, TexasJuly 28, 2023

2023-07-28 18:20:53 UTC (2023-07-28) · approx. 11:20 AM UTC-7 local

MagnitudeM2.5(ml)
Time18:20 UTC11:20 AM UTC-7
Depth8.4 kmshallow crustal
Coordinates31.615°, -103.990°
Felt by1DYFI response
Status✓ Reviewed by USGS

On July 28, 2023 at 18:20 UTC, a magnitude 2.5 shallow crustal earthquake struck 38 km NNW of Toyah, Texas, at a depth of 8.4 km and coordinates 31.6152°, -103.9895°.

Physical scale: An earthquake of magnitude 2.5 releases seismic energy equivalent to roughly 84.8 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 32 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 31.62°, -103.99°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M2.5 earthquake near 38 km NNW of Toyah, Texas

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
2.5 ml
Depth
8.4 km
shallow crustal
Location
31.6152°N
-103.9895°E
Felt Reports
1
DYFI responses
Community Intensity
3.1
CDI from reports

Technical Information

Event ID
tx2023orkz
Event Type
earthquake
Status
✓ Reviewed
Significance
96
Stations Used
13
Azimuthal Gap
68.0°
Min Station Distance
0.025°
RMS Residual
0.20 sec
Last Updated
2023-09-30 21:36:32 UTC

Common Questions

How strong was the magnitude 2.5 earthquake near Toyah, Texas?

The magnitude 2.5 earthquake that struck 38 km NNW of Toyah, Texas on July 28, 2023 at 18:20 UTC had a depth of 8.4 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 2.5 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.5 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: tx2023orkz). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, July 28, 2023). M2.5 Earthquake 38 km NNW of Toyah, TexasJuly 28, 2023. Retrieved September 30, 2023 from https://www.earthquaketracker.org/earthquakes/event/tx2023orkz/