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M0.9 earthquake 21 km SSW of Oasis, California, United States

A magnitude 0.9 earthquake struck 21 km SSW of Oasis, California, United States at 06:07 local time (13:07 UTC) on 27 Oct 2026, at a depth of 9 km, according to USGS.

revised from M1.0

Data: USGS · updated 2026-10-27 15:28 UTC · reviewed

Magnitude
0.9micro
local magnitude (Richter) (ml)
revised from 1.0
Depth
9.5 km
Status
Reviewed
Origin time
2026-10-27 13:07:34 UTC
Local: 27 Oct 2026, 06:07:34 (America/Los Angeles)
Epicentre
33.290° N, 116.159° 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. 6,89021 kmINot felt
MeccaCalifornia, United States · pop. 8,57732 kmINot felt
CoachellaCalifornia, United States · pop. 44,63543 kmINot felt
La QuintaCalifornia, United States · pop. 40,47643 kmINot felt
IndioCalifornia, United States · pop. 87,53348 kmINot felt
Palm DesertCalifornia, United States · pop. 51,86952 kmINot felt
MexicaliBaja California, Mexico · pop. 1,032,68699 kmINot felt
Chula VistaCalifornia, United States · pop. 265,757112 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 Survey0.9 mlwas 1.09.5 km33.29° N, 116.16° 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 374 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 9 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.0 releases about 1.3× the energy of M0.9, and its waves are about 1.2× taller on a seismogram. Energy: 477 g of TNT vs 374 g of TNT.

Each square is the energy of one M0.9. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

45 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 M0.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.091.17
13.572.57
14.140.411
21.311.111
35.650.713
44.970.97
45.810.812
45.920.612
47.380.713
49.301.113
72.851.38
80.240.83
85.761.410
86.890.811
88.110.98
94.600.29
104.761.110
110.050.69
126.341.17
131.251.112
155.200.112
160.510.910
163.690.515
176.770.713
176.981.09
176.991.010
201.320.713
217.661.310
223.170.512
230.201.111
243.320.914
255.520.710
304.840.711
313.660.65
316.130.914
324.400.411
327.591.212
340.721.011
342.180.18
350.220.212
356.671.56
356.680.85
369.631.42
370.260.910
391.330.89
  1. 2.545 km S of Oasis, California, United States10-28 02:41
  2. 1.526 km S of Oasis, California, United States11-11 09:47
  3. 1.439 km WSW of Oasis, California, United States11-11 22:45
  4. 1.427 km S of Oasis, California, United States10-31 02:53
  5. 1.318 km SW of Oasis, California, United States11-05 14:47
  6. 1.336 km SSE of Oasis, California, United States10-30 13:58
  7. 1.229 km SW of Oasis, California, United States11-10 04:42
  8. 1.139 km ENE of San Diego Country Estates, California, United States10-31 21:52
  9. 1.139 km ENE of San Diego Country Estates, California, United States10-29 14:25
  10. 1.130 km S of Oasis, California, United States11-01 19:27
  11. 1.128 km SSW of Oasis, California, United States11-06 03:19
  12. 1.127 km SSW of La Quinta, California, United States10-28 10:26
  13. 1.127 km WSW of Oasis, California, United States10-27 13:12
  14. 1.129 km SSW of La Quinta, California, United States11-02 00:22
  15. 1.028 km SSE of Oasis, California, United States11-03 22:06
  16. 1.027 km SSE of Oasis, California, United States11-03 22:07
  17. 1.036 km ENE of San Diego Country Estates, California, United States11-10 17:50
  18. 0.930 km WSW of Oasis, California, United States11-09 17:15
  19. 0.945 km S of Oasis, California, United States10-29 10:05
  20. 0.944 km S of Oasis, California, United States10-31 05:14
  21. 0.938 km SSW of Oasis, California, United States11-03 05:38
  22. 0.940 km SW of Oasis, California, United States11-06 16:26
  23. 0.930 km SW of Oasis, California, United States11-11 23:23
  24. 0.825 km S of Oasis, California, United States11-11 09:48
  25. 0.819 km SSW of Oasis, California, United States10-30 21:21

Did you feel it?

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Reports on SeismoAtlas

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Event id ci41353511. First recorded here 27 Oct 2026, 13:10:58 UTC. Solutions: USGS · CI (usgs:ci41353511). Cite as: SeismoAtlas, “M0.9 earthquake 21 km SSW of Oasis, California, United States”, https://seismoatlas.com/earthquake/ci41353511-m0-9-earthquake-21-km-ssw-of-oasis-california-united-states, data from USGS.

JSON: /api/v1/events/ci41353511. SeismoAtlas is not an official warning service.