Skip to content
SeismoAtlas

M3.1 earthquake 28 km SSE of Pearsall, Texas, United States

A magnitude 3.1 earthquake struck 28 km SSE of Pearsall, Texas, United States at 04:42 local time (09:42 UTC) on 10 Sept 2026, at a depth of 7 km, according to USGS.

Data: USGS · updated 2026-09-10 13:58 UTC · reviewed

Magnitude
3.1minor
local magnitude (Richter) (ml)
Depth
6.8 km
Status
Reviewed
Origin time
2026-09-10 09:42:57 UTC
Local: 10 Sept 2026, 04:42:57 (America/Chicago)
Epicentre
28.678° N, 98.939° W

Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map

Nearby places

Distance and estimated shaking at nearby places
PlaceDistanceEst. shaking
PearsallTexas, United States · pop. 9,98028 kmIIWeak
PleasantonTexas, United States · pop. 9,82955 kmINot felt
San AntonioTexas, United States · pop. 1,526,65693 kmINot felt
ConverseTexas, United States · pop. 21,987111 kmINot felt
SchertzTexas, United States · pop. 43,091117 kmINot felt
CiboloTexas, United States · pop. 33,433120 kmINot felt
LaredoTexas, United States · pop. 256,153141 kmINot felt
Nuevo LaredoTamaulipas, Mexico · pop. 416,055145 kmINot felt

Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more. Likely felt out to about 16 km.

Every agency's solution

Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS · TX, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · TXheadlineTexNet via U.S. Geological Survey3.1 ml6.8 km28.68° N, 98.94° W–Reviewed

Advertisement

How big was it?

Often felt by people at rest close to the epicentre, rarely causes damage.

It released roughly the energy of 674 kg of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 7 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M3.1 releases about 32× the energy of M2.1, and its waves are about 10× taller on a seismogram. Energy: 674 kg of TNT vs 21 kg of TNT.

Each square is the energy of one M2.1. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

54 later earthquakes within 30 km; the largest was M2.8 2 days ago. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M3.1

54 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
285.101.46
285.391.69
285.601.57
286.021.29
289.431.99
295.731.79
298.311.76
306.061.88
306.071.88
309.141.47
320.321.88
320.651.99
320.842.08
321.531.78
327.451.69
327.641.58
329.011.37
329.191.67
330.171.87
331.091.68
331.591.77
331.881.69
332.221.68
332.471.78
333.291.98
333.761.57
333.901.68
336.862.09
337.621.79
338.491.78
341.451.98
343.412.59
346.541.98
348.692.27
350.462.34
350.621.97
354.931.46
355.471.77
355.992.27
356.021.98
357.091.98
357.161.66
357.681.67
360.781.97
361.721.87
366.271.88
380.001.69
380.371.78
381.621.97
394.912.77
395.112.86
396.041.79
407.902.28
410.731.68
  1. 2.822 km ESE of Pearsall, Texas, United States09-26 20:49
  2. 2.717 km ESE of Pearsall, Texas, United States09-26 20:37
  3. 2.517 km ESE of Pearsall, Texas, United States09-24 17:07
  4. 2.310 km SSE of Pearsall, Texas, United States09-25 00:10
  5. 2.212 km ESE of Pearsall, Texas, United States09-24 22:24
  6. 2.218 km ESE of Pearsall, Texas, United States09-25 05:42
  7. 2.219 km ESE of Pearsall, Texas, United States09-27 09:37
  8. 2.017 km E of Pearsall, Texas, United States09-23 18:33
  9. 2.014 km E of Pearsall, Texas, United States09-24 10:34
  10. 1.917 km ESE of Pearsall, Texas, United States09-22 11:08
  11. 1.912 km ESE of Pearsall, Texas, United States09-23 18:22
  12. 1.918 km ESE of Pearsall, Texas, United States09-24 07:00
  13. 1.917 km ESE of Pearsall, Texas, United States09-24 15:09
  14. 1.912 km ESE of Pearsall, Texas, United States09-24 20:15
  15. 1.913 km ESE of Pearsall, Texas, United States09-25 00:19
  16. 1.918 km ESE of Pearsall, Texas, United States09-25 05:44
  17. 1.912 km ESE of Pearsall, Texas, United States09-25 06:48
  18. 1.912 km ESE of Pearsall, Texas, United States09-25 10:29
  19. 1.918 km ESE of Pearsall, Texas, United States09-26 07:20
  20. 1.818 km ESE of Pearsall, Texas, United States09-23 03:46
  21. 1.817 km ESE of Pearsall, Texas, United States09-23 03:47
  22. 1.818 km ESE of Pearsall, Texas, United States09-23 18:02
  23. 1.811 km ESE of Pearsall, Texas, United States09-24 03:52
  24. 1.812 km ESE of Pearsall, Texas, United States09-25 11:26
  25. 1.816 km E of Pearsall, Texas, United States09-25 15:59

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

Event id tx2026rviiec. First recorded here 28 Sept 2026, 17:32:12 UTC. Solutions: USGS · TX (usgs:tx2026rviiec). Cite as: SeismoAtlas, “M3.1 earthquake 28 km SSE of Pearsall, Texas, United States”, https://seismoatlas.com/earthquake/tx2026rviiec-m3-1-earthquake-28-km-sse-of-pearsall-texas-united-states, data from USGS.

JSON: /api/v1/events/tx2026rviiec. SeismoAtlas is not an official warning service.