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SeismoAtlas

M1.0 earthquake 36 km SW of Oasis, California, United States

A magnitude 1.0 earthquake struck 36 km SW of Oasis, California, United States at 06:15 local time (13:15 UTC) on 26 Oct 2026, at a depth of 10 km, according to USGS.

revised from M1.2

Data: USGS · updated 2026-10-26 13:43 UTC · reviewed

Magnitude
1.0micro
local magnitude (Richter) (ml)
revised from 1.2
Depth
9.5 km
Status
Reviewed
Origin time
2026-10-26 13:15:25 UTC
Local: 26 Oct 2026, 06:15:25 (America/Los Angeles)
Epicentre
33.252° N, 116.391° 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. 6,89036 kmINot felt
San Diego Country EstatesCalifornia, United States · pop. 10,10945 kmINot felt
La QuintaCalifornia, United States · pop. 40,47646 kmINot felt
RamonaCalifornia, United States · pop. 20,29250 kmINot felt
CoachellaCalifornia, United States · pop. 44,63552 kmINot felt
Palm DesertCalifornia, United States · pop. 51,86952 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,45293 kmINot felt
Chula VistaCalifornia, United States · pop. 265,75794 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 Survey1.0 mlwas 1.29.5 km33.25° N, 116.39° 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 494 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.

M1.0 releases about 1× the energy of M1.0, and its waves are about 1× taller on a seismogram. Energy: 494 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

111 later earthquakes within 30 km; the largest was M2.6 6 days ago. 39 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.0

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.250.88
3.750.313
10.170.87
10.691.110
13.910.712
16.382.210
21.910.78
23.870.99
23.961.17
28.650.98
32.200.413
38.010.411
45.181.111
53.860.711
59.520.713
64.160.48
64.820.69
66.520.47
69.680.812
69.790.612
71.250.713
73.161.113
75.710.514
76.591.16
78.890.26
81.410.97
88.340.412
88.640.67
104.100.83
109.631.410
110.760.811
116.470.311
116.481.97
118.470.29
128.180.414
128.450.812
128.631.110
139.980.717
141.700.57
146.401.86
155.121.112
165.921.28
172.260.913
173.410.89
173.641.19
175.020.89
179.070.112
182.761.113
184.380.910
187.560.515
189.790.66
189.790.211
189.960.214
192.230.46
193.580.712
200.640.713
213.530.89
215.061.014
225.190.713
227.260.813
228.390.712
241.531.310
247.040.512
254.071.111
257.482.67
257.501.17
259.960.27
261.500.413
261.851.37
262.630.37
266.520.66
267.190.914
268.690.47
279.390.710
281.860.913
285.081.811
287.791.114
296.770.27
301.451.39
306.050.910
306.560.89
308.041.09
318.261.16
319.370.713
319.371.014
321.610.510
328.710.711
336.441.213
337.350.713
337.530.65
340.000.914
342.680.813
348.270.411
351.461.212
356.280.613
356.730.811
364.591.011
366.050.18
366.050.411
374.090.212
380.541.56
380.550.85
386.380.813
393.501.42
394.130.910
396.920.514
401.120.412
401.760.712
402.281.56
402.470.617
420.220.86
  1. 2.641 km ENE of Valley Center, California, United States11-06 06:44
  2. 2.236 km E of San Diego Country Estates, California, United States10-27 05:38
  3. 1.945 km E of San Diego Country Estates, California, United States10-31 09:44
  4. 1.825 km SSW of La Quinta, California, United States11-07 10:20
  5. 1.822 km SW of La Quinta, California, United States11-01 15:39
  6. 1.526 km S of Oasis, California, United States11-11 09:47
  7. 1.541 km ENE of Valley Center, California, United States11-12 07:32
  8. 1.439 km WSW of Oasis, California, United States11-11 22:45
  9. 1.427 km S of Oasis, California, United States10-31 02:53
  10. 1.318 km SW of Oasis, California, United States11-05 14:47
  11. 1.330 km E of San Diego Country Estates, California, United States11-08 02:42
  12. 1.341 km ENE of Valley Center, California, United States11-06 11:06
  13. 1.225 km SW of La Quinta, California, United States11-09 13:41
  14. 1.229 km SW of Oasis, California, United States11-10 04:42
  15. 1.232 km E of San Diego Country Estates, California, United States11-02 11:10
  16. 1.139 km ENE of San Diego Country Estates, California, United States10-31 21:52
  17. 1.139 km ENE of San Diego Country Estates, California, United States10-29 14:25
  18. 1.128 km SSW of Oasis, California, United States11-06 03:19
  19. 1.132 km E of San Diego Country Estates, California, United States11-07 13:03
  20. 1.127 km SSW of La Quinta, California, United States10-28 10:26
  21. 1.125 km SW of La Quinta, California, United States11-03 04:01
  22. 1.141 km SW of La Quinta, California, United States11-06 06:45
  23. 1.127 km WSW of Oasis, California, United States10-27 13:12
  24. 1.123 km SSW of Oasis, California, United States10-26 23:56
  25. 1.129 km SSW of La Quinta, California, United States11-02 00:22

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 ci41352815. First recorded here 26 Oct 2026, 13:18:56 UTC. Solutions: USGS · CI (usgs:ci41352815). Cite as: SeismoAtlas, “M1.0 earthquake 36 km SW of Oasis, California, United States”, https://seismoatlas.com/earthquake/ci41352815-m1-0-earthquake-36-km-sw-of-oasis-california-united-states, data from USGS.

JSON: /api/v1/events/ci41352815. SeismoAtlas is not an official warning service.