Texas earthquakes

M3.6 earthquake 17 km NNE of Hermleigh, Texas

A magnitude 3.6 earthquake struck 17 km NNE of Hermleigh, Texas on Sun, Sep 12, 2021, 6:26 AM CDT (11:26 UTC), 8 km (5 mi) below the surface.

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Map

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

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The earthquake

Magnitude
3.6 (ml), minor
Local time
UTC
2021-09-12 11:26:41 UTC
Depth
7.9 km (4.9 mi), shallow
Epicenter
32.767° N, 100.660° W
Region
Texas
Felt reports
18
Strongest shaking
IV, light shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
IV, light shaking
Peak ground acceleration
2.0% of gravity
Peak ground velocity
-1.2 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

18 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Normal
Moment magnitude
3.7 Mwr
Nodal plane 1
Strike 38°, dip 24°, rake -110°
Nodal plane 2
Strike 239°, dip 67°, rake -81°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.4 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.20
Station coverage gap
69°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.716 km NNE of Hermleigh, Texas · 1840 days ago · 3 km deep · 5 km away · felt by 1
  2. 2.417 km NNE of Hermleigh, Texas · 1840 days ago · 8 km deep · 0 km away · felt by 2
  3. 2.1western Texas · 1835 days ago · 10 km deep · 100 km away
  4. 1.88 km WSW of Westbrook, Texas · 1833 days ago · 7 km deep · 64 km away
  5. 2.112 km W of Rotan, Texas · 1831 days ago · 10 km deep · 10 km away
  6. 2.217 km NNE of Hermleigh, Texas · 1831 days ago · 9 km deep · 0 km away
  7. 2.411 km WSW of Rotan, Texas · 1817 days ago · 10 km deep · 10 km away
  8. 2.210 km NNE of Hermleigh, Texas · 1815 days ago · 7 km deep · 7 km away
  9. 2.318 km NNE of Hermleigh, Texas · 1800 days ago · 8 km deep · 1 km away
  10. 2.718 km NNE of Hermleigh, Texas · 1797 days ago · 1 km deep · 1 km away
  11. 2.118 km SSE of Ackerly, Texas · 1795 days ago · 1 km deep · 98 km away
  12. 2.718 km SSE of Ackerly, Texas · 1793 days ago · 5 km deep · 99 km away
  13. 2.117 km NNE of Hermleigh, Texas · 1783 days ago · 8 km deep · 1 km away

Before

  1. 2.416 km NNE of Hermleigh, Texas · 1841 days ago · 9 km deep · 1 km away
  2. 2.617 km NNE of Hermleigh, Texas · 1841 days ago · 6 km deep · 1 km away
  3. 2.618 km NE of Hermleigh, Texas · 1845 days ago · 8 km deep · 1 km away
  4. 1.612 km NE of Hermleigh, Texas · 1848 days ago · 8 km deep · 5 km away
  5. 1.96 km SE of Ackerly, Texas · 1858 days ago · 11 km deep · 99 km away
  6. 1.96 km SE of Ackerly, Texas · 1858 days ago · 12 km deep · 99 km away
  7. 1.713 km NE of Hermleigh, Texas · 1861 days ago · 7 km deep · 4 km away
  8. 2.313 km N of Snyder, Texas · 1865 days ago · 5 km deep · 28 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event tx2021rwyl (also filed as us7000faig). Read Sat, Sep 26, 2026, 10:53 PM UTC.