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M1.1 earthquake 23 km SSW of Oasis, California, United States

A magnitude 1.1 earthquake struck 23 km SSW of Oasis, California, United States at 16:56 local time (23:56 UTC) on 26 Oct 2026, at a depth of 10 km, according to USGS.

revised from M1.2

Data: USGS · updated 2026-10-28 20:14 UTC · reviewed

Magnitude
1.1micro
local magnitude (Richter) (ml)
revised from 1.2
Depth
10.4 km
Status
Reviewed
Origin time
2026-10-26 23:56:55 UTC
Local: 26 Oct 2026, 16:56:55 (America/Los Angeles)
Epicentre
33.295° N, 116.224° 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
OasisCalifornia, United States · pop. 6,89023 kmINot felt
MeccaCalifornia, United States · pop. 8,57733 kmINot felt
La QuintaCalifornia, United States · pop. 40,47641 kmINot felt
CoachellaCalifornia, United States · pop. 44,63543 kmINot felt
IndioCalifornia, United States · pop. 87,53347 kmINot felt
Palm DesertCalifornia, United States · pop. 51,86949 kmINot felt
MexicaliBaja California, Mexico · pop. 1,032,686103 kmINot felt
Chula VistaCalifornia, United States · pop. 265,757108 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 · CI, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · CIheadlineSouthern California Seismic Network via U.S. Geological Survey1.1 mlwas 1.110.4 km33.30° N, 116.22° W–Reviewed · 2 revisions

How big was it?

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

It released roughly the energy of 587 g 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 10 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.1 releases about 1.2× the energy of M1.0, and its waves are about 1.1× taller on a seismogram. Energy: 587 g of TNT vs 477 g of TNT.

Each square is the energy of one M1.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

51 later earthquakes within 30 km; the largest was M2.5 15 days ago. 22 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
3.220.712
11.220.78
13.180.99
13.261.17
26.742.57
27.320.411
34.491.111
48.830.713
58.990.812
59.090.612
60.560.713
62.471.113
77.650.412
86.031.38
93.410.83
98.941.410
100.070.811
101.290.98
107.780.29
117.931.110
123.230.69
139.511.17
144.431.112
168.370.112
173.690.910
176.870.515
179.270.214
189.950.713
190.161.09
190.171.010
214.500.713
230.841.310
236.340.512
243.381.111
250.810.413
256.500.914
268.690.710
274.391.811
318.010.711
326.840.65
329.310.914
337.580.411
340.761.212
353.901.011
355.360.18
363.400.212
369.851.56
369.860.85
382.811.42
383.440.910
404.510.89
  1. 2.545 km S of Oasis, California, United States10-28 02:41
  2. 1.825 km SSW of La Quinta, California, United States11-07 10:20
  3. 1.526 km S of Oasis, California, United States11-11 09:47
  4. 1.439 km WSW of Oasis, California, United States11-11 22:45
  5. 1.427 km S of Oasis, California, United States10-31 02:53
  6. 1.318 km SW of Oasis, California, United States11-05 14:47
  7. 1.336 km SSE of Oasis, California, United States10-30 13:58
  8. 1.229 km SW of Oasis, California, United States11-10 04:42
  9. 1.139 km ENE of San Diego Country Estates, California, United States10-31 21:52
  10. 1.139 km ENE of San Diego Country Estates, California, United States10-29 14:25
  11. 1.130 km S of Oasis, California, United States11-01 19:27
  12. 1.128 km SSW of Oasis, California, United States11-06 03:19
  13. 1.127 km SSW of La Quinta, California, United States10-28 10:26
  14. 1.127 km WSW of Oasis, California, United States10-27 13:12
  15. 1.129 km SSW of La Quinta, California, United States11-02 00:22
  16. 1.028 km SSE of Oasis, California, United States11-03 22:06
  17. 1.027 km SSE of Oasis, California, United States11-03 22:07
  18. 1.036 km ENE of San Diego Country Estates, California, United States11-10 17:50
  19. 0.930 km WSW of Oasis, California, United States11-09 17:15
  20. 0.921 km SSW of Oasis, California, United States10-27 13:07
  21. 0.944 km S of Oasis, California, United States10-31 05:14
  22. 0.938 km SSW of Oasis, California, United States11-03 05:38
  23. 0.940 km SW of Oasis, California, United States11-06 16:26
  24. 0.930 km SW of Oasis, California, United States11-11 23:23
  25. 0.825 km S of Oasis, California, United States11-11 09:48

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 ci41353287. First recorded here 27 Oct 2026, 00:00:24 UTC. Solutions: USGS · CI (usgs:ci41353287). Cite as: SeismoAtlas, “M1.1 earthquake 23 km SSW of Oasis, California, United States”, https://seismoatlas.com/earthquake/ci41353287-m1-1-earthquake-23-km-ssw-of-oasis-california-united-states, data from USGS.

JSON: /api/v1/events/ci41353287. SeismoAtlas is not an official warning service.