Earthquake · reviewed by a seismologist
M 4.1ml
37 km NNW of Toyah, Texas
Yes. A magnitude 4.1 earthquake was recorded 37 km NNW of Toyah, Texas, at 5:26 pm CST on 28 February 2023 (23:26 UTC), 8.5 km deep. 2 people have reported feeling it to USGS.
- When
- Texas today
- every earthquake in Texas in the last 24 hours
- Magnitude
- M 4.1 (ml)
- Depth
- 8.5 km below the surface
- Felt
- 2 reports · strongest reported intensity III
- Measured shaking
- intensity V (ShakeMap)
- USGS impact alert
- green
- Nearest
- Reeves County, 43 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 763 days ago
Earthquake alerts for Pecos, TX
Get a notification in this browser when USGS records an earthquake near Pecos, TX. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.
At this magnitude and depth, people at rest would likely notice it out to about 491 km (305 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
How big was it?
This earthquake released about 21 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 7,900× the energy of this one
- Mineral, Virginia 2011 M 5.8 350× the energy of this one
- Magna, Utah 2020 M 5.7 250× the energy of this one
- This earthquake M 4.1 about 21 tons of TNT
- Around the size people start to feel M 3.0 this one released 45× more
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
The largest earthquake within 50 km since 2016 was M 5.4 on 2022-11-16 — about 89 times the energy of this one.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 31.6135, -103.9891. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Reeves County, TX | 43 km (27 mi) | SE | earthquakes near Reeves County |
| Loving County, TX | 48 km (30 mi) | ENE | earthquakes near Loving County |
| Culberson County, TX | 54 km (34 mi) | WSW | earthquakes near Culberson County |
| Ward County, TX | 84 km (53 mi) | E | earthquakes near Ward County |
| Winkler County, TX | 92 km (57 mi) | ENE | earthquakes near Winkler County |
| Eddy County, NM | 99 km (61 mi) | NNW | earthquakes near Eddy County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
59 earthquakes have been recorded within 50 km since this one.
- 1.6 56 km NW of Toyah, Texas
- 1.7 55 km S of Whites City, New Mexico
- 2.0 59 km WNW of Toyah, Texas
- 1.6 55 km S of Whites City, New Mexico
- 1.9 western Texas
- 2.0 western Texas
- 1.7 39 km WSW of Mentone, Texas
- 1.6 57 km S of Whites City, New Mexico
- 2.1 56 km S of Whites City, New Mexico
- 1.7 53 km S of Whites City, New Mexico
- 2.0 western Texas
- 1.6 54 km S of Whites City, New Mexico
- 2.1 44 km NW of Toyah, Texas
- 1.6 43 km NW of Toyah, Texas
- 2.0 western Texas
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.