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M2.1 earthquake 91 km SSW of Carlsbad, New Mexico, United States

A magnitude 2.1 earthquake struck 91 km SSW of Carlsbad, New Mexico, United States at 19:40 local time (01:40 UTC) on 28 Oct 2026, at a depth of 9 km, according to USGS.

Data: USGS · updated 2026-10-29 15:54 UTC · reviewed

Magnitude
2.1micro
local magnitude (Richter) (ml)
Depth
8.6 km
Status
Reviewed
Origin time
2026-10-29 01:40:42 UTC
Local: 28 Oct 2026, 19:40:42 (America/Denver)
Epicentre
31.635° N, 104.488° 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
CarlsbadNew Mexico, United States · pop. 28,95791 kmINot felt
PecosTexas, United States · pop. 9,51798 kmINot felt
Ciudad JuárezChihuahua, Mexico · pop. 1,512,450187 kmINot felt
El PasoTexas, United States · pop. 678,815190 kmINot felt
ChihuahuaMexico · pop. 925,762367 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.

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 Survey2.1 ml8.6 km31.64° N, 104.49° W–Reviewed

How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 21 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 9 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.1 releases about 32× the energy of M1.1, and its waves are about 10× taller on a seismogram. Energy: 21 kg of TNT vs 674 g of TNT.

Each square is the energy of one M1.1. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

64 later earthquakes within 30 km; the largest was M3.0 3 days ago. 15 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
29.622.18
29.951.97
30.311.97
55.151.57
55.452.26
56.681.97
58.551.76
58.601.76
62.781.87
76.322.14
80.531.96
85.992.77
86.481.78
93.401.97
95.541.77
99.681.56
100.702.06
102.571.57
103.871.58
106.632.17
109.011.87
109.881.78
111.202.35
111.632.47
115.572.35
122.651.87
123.492.06
127.352.07
128.021.73
137.011.67
139.191.88
148.712.06
152.171.96
155.161.87
188.551.82
188.761.97
201.482.55
206.192.16
216.512.17
236.931.96
241.011.75
250.502.17
254.722.16
255.441.86
255.551.76
255.892.36
267.911.77
270.402.16
270.511.96
271.781.86
275.722.06
277.783.06
287.941.76
297.281.67
297.312.26
298.111.58
315.232.46
315.282.07
316.842.05
316.891.66
321.552.06
325.222.46
325.222.57
348.111.96
  1. 3.087 km SSW of Carlsbad, New Mexico, United States11-09 15:27
  2. 2.783 km WNW of Pecos, Texas, United States11-01 15:40
  3. 2.588 km SSW of Carlsbad, New Mexico, United States11-06 11:09
  4. 2.584 km S of Carlsbad, New Mexico, United States11-11 14:53
  5. 2.485 km S of Carlsbad, New Mexico, United States11-02 17:18
  6. 2.478 km S of Carlsbad, New Mexico, United States11-11 04:54
  7. 2.484 km WNW of Pecos, Texas, United States11-11 14:53
  8. 2.387 km SSW of Carlsbad, New Mexico, United States11-02 16:53
  9. 2.382 km SSW of Carlsbad, New Mexico, United States11-02 21:14
  10. 2.371 km WNW of Pecos, Texas, United States11-08 17:33
  11. 2.291 km SSW of Carlsbad, New Mexico, United States10-31 09:07
  12. 2.286 km SSW of Carlsbad, New Mexico, United States11-10 10:59
  13. 2.177 km WNW of Pecos, Texas, United States10-30 07:18
  14. 2.185 km SSW of Carlsbad, New Mexico, United States11-01 05:59
  15. 2.189 km SSW of Carlsbad, New Mexico, United States11-02 12:18
  16. 2.186 km SSW of Carlsbad, New Mexico, United States11-06 15:52
  17. 2.182 km S of Carlsbad, New Mexico, United States11-07 02:11
  18. 2.179 km WNW of Pecos, Texas, United States11-08 12:10
  19. 2.171 km WNW of Pecos, Texas, United States11-08 16:23
  20. 2.171 km WNW of Pecos, Texas, United States11-09 08:04
  21. 2.088 km SSW of Carlsbad, New Mexico, United States11-02 06:22
  22. 2.092 km SSW of Carlsbad, New Mexico, United States11-03 05:09
  23. 2.088 km SSW of Carlsbad, New Mexico, United States11-03 09:01
  24. 2.087 km SSW of Carlsbad, New Mexico, United States11-04 06:23
  25. 2.071 km WNW of Pecos, Texas, United States11-09 13:23

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 tx2026vgqxso. First recorded here 29 Oct 2026, 15:54:49 UTC. Solutions: USGS · TX (usgs:tx2026vgqxso). Cite as: SeismoAtlas, “M2.1 earthquake 91 km SSW of Carlsbad, New Mexico, United States”, https://seismoatlas.com/earthquake/tx2026vgqxso-m2-1-earthquake-91-km-ssw-of-carlsbad-new-mexico-united-states, data from USGS.

JSON: /api/v1/events/tx2026vgqxso. SeismoAtlas is not an official warning service.