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M1.1 earthquake 27 km WSW of Oasis, California, United States

A magnitude 1.1 earthquake struck 27 km WSW of Oasis, California, United States at 06:12 local time (13:12 UTC) on 27 Oct 2026, at a depth of 7 km, according to USGS.

revised from M1.3

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

Magnitude
1.1micro
local magnitude (Richter) (ml)
revised from 1.3
Depth
6.5 km
Status
Reviewed
Origin time
2026-10-27 13:12:48 UTC
Local: 27 Oct 2026, 06:12:48 (America/Los Angeles)
Epicentre
33.373° N, 116.371° 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. 6,89027 kmINot felt
La QuintaCalifornia, United States · pop. 40,47632 kmINot felt
Palm DesertCalifornia, United States · pop. 51,86939 kmINot felt
CoachellaCalifornia, United States · pop. 44,63539 kmINot felt
IndioCalifornia, United States · pop. 87,53341 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,452103 kmINot felt
Chula VistaCalifornia, United States · pop. 265,757105 kmINot felt
TijuanaBaja California, Mexico · pop. 1,922,523113 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 1.36.5 km33.37° N, 116.37° 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 607 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 7 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 1.3× the energy of M1.0, and its waves are about 1.2× taller on a seismogram. Energy: 607 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

84 later earthquakes within 30 km; the largest was M2.6 6 days ago. 51 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
14.050.411
21.221.111
35.560.713
45.730.812
45.830.612
47.290.713
49.211.113
51.750.514
54.930.26
55.090.14
80.150.83
86.810.811
92.510.311
93.770.814
94.520.29
104.230.414
104.671.110
106.520.44
112.570.612
117.740.57
122.451.86
127.710.87
131.161.112
148.310.913
151.521.014
155.110.112
158.811.113
160.420.910
163.610.515
165.840.66
165.840.211
168.280.46
169.630.712
170.250.515
176.680.713
191.101.014
200.951.013
201.230.713
203.310.813
204.430.712
207.940.510
217.581.310
223.080.512
230.111.111
233.522.67
233.541.17
236.000.27
237.540.413
237.891.37
238.670.37
242.560.66
243.230.914
244.730.47
255.430.710
261.121.811
272.820.27
280.160.712
294.301.16
295.410.713
295.421.014
297.660.510
304.750.711
312.481.213
313.390.613
313.390.713
313.570.65
314.170.514
316.040.914
318.720.813
324.320.411
327.501.212
332.320.613
332.770.811
340.631.011
342.090.18
350.130.212
362.430.813
369.551.42
370.180.910
372.960.514
378.331.56
384.540.54
387.770.44
396.270.86
  1. 2.641 km ENE of Valley Center, California, United States11-06 06:44
  2. 1.825 km SSW of La Quinta, California, United States11-07 10:20
  3. 1.822 km SW of La Quinta, California, United States11-01 15:39
  4. 1.541 km ENE of Valley Center, California, United States11-12 07:32
  5. 1.439 km WSW of Oasis, California, United States11-11 22:45
  6. 1.318 km SW of Oasis, California, United States11-05 14:47
  7. 1.341 km ENE of Valley Center, California, United States11-06 11:06
  8. 1.225 km SW of La Quinta, California, United States11-09 13:41
  9. 1.229 km SW of Oasis, California, United States11-10 04:42
  10. 1.139 km ENE of San Diego Country Estates, California, United States10-31 21:52
  11. 1.139 km ENE of San Diego Country Estates, California, United States10-29 14:25
  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. 1.125 km SW of La Quinta, California, United States11-03 04:01
  15. 1.141 km SW of La Quinta, California, United States11-06 06:45
  16. 1.129 km SSW of La Quinta, California, United States11-02 00:22
  17. 1.122 km SW of La Quinta, California, United States11-08 19:31
  18. 1.027 km SW of La Quinta, California, United States11-04 22:09
  19. 1.025 km SW of La Quinta, California, United States11-08 20:37
  20. 1.023 km SW of La Quinta, California, United States11-02 20:44
  21. 1.024 km SW of La Quinta, California, United States11-04 12:18
  22. 1.036 km ENE of San Diego Country Estates, California, United States11-10 17:50
  23. 0.930 km WSW of Oasis, California, United States11-09 17:15
  24. 0.924 km SW of La Quinta, California, United States11-02 17:31
  25. 0.938 km SSW of Oasis, California, United States11-03 05:38

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 ci41353527. First recorded here 27 Oct 2026, 13:15:59 UTC. Solutions: USGS · CI (usgs:ci41353527). Cite as: SeismoAtlas, “M1.1 earthquake 27 km WSW of Oasis, California, United States”, https://seismoatlas.com/earthquake/ci41353527-m1-1-earthquake-27-km-wsw-of-oasis-california-united-states, data from USGS.

JSON: /api/v1/events/ci41353527. SeismoAtlas is not an official warning service.