QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7ml

49 km NW of Toyah, Texas

Yes. A magnitude 3.7 earthquake was recorded 49 km NW of Toyah, Texas, at 7:45 am CDT on 21 October 2026 (12:45 UTC), 6.1 km deep. No felt reports to USGS yet.

· 6.1 km deep · released about 5.4 tons of TNT

10 km30 km60 km120 km N Culberson County 43 kmReeves County 56 kmLoving County 59 kmEddy County 91 kmWard County 99 kmWinkler County 104 kmJeff Davis County 114 kmHudspeth County 120 km
Distance rings around the epicentre, with the nearest towns at their true direction. Not a shaking map — see the USGS ShakeMap for that.
When
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 3.7 (ml)
Depth
6.1 km below the surface
Felt
no reports yet
Nearest
Culberson County, 43 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2 hours ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 370 km (230 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 5.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 32,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,000× the energy of this one
  4. This earthquake M 3.7 about 5.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 11× 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 350 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 31.6540, -104.1390. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Culberson County, TX 43 km (27 mi) WSW earthquakes near Culberson County
Reeves County, TX 56 km (35 mi) SE earthquakes near Reeves County
Loving County, TX 59 km (36 mi) ENE earthquakes near Loving County
Eddy County, NM 91 km (56 mi) N earthquakes near Eddy County
Ward County, TX 99 km (62 mi) E earthquakes near Ward County
Winkler County, TX 104 km (65 mi) ENE earthquakes near Winkler County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

No further earthquakes have been recorded within 50 km since this one.

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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.