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SeismoAtlas

M0.9 earthquake 8 km NE of Yucaipa, California, United States

A magnitude 0.9 earthquake struck 8 km NE of Yucaipa, California, United States at 20:46 local time (03:46 UTC) on 26 Oct 2026, at a depth of 2 km, according to USGS.

revised from M1.0

Data: USGS · updated 2026-10-28 21:30 UTC · reviewed

Magnitude
0.9micro
local magnitude (Richter) (ml)
revised from 1.0
Depth
1.6 km
Status
Reviewed
Origin time
2026-10-27 03:46:33 UTC
Local: 26 Oct 2026, 20:46:33 (America/Los Angeles)
Epicentre
34.081° N, 116.986° 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
YucaipaCalifornia, United States · pop. 53,3288 kmINot felt
CalimesaCalifornia, United States · pop. 8,54211 kmINot felt
BeaumontCalifornia, United States · pop. 43,81117 kmINot felt
RedlandsCalifornia, United States · pop. 71,03518 kmINot felt
BanningCalifornia, United States · pop. 30,94519 kmINot felt
RiversideCalifornia, United States · pop. 317,26141 kmINot felt
AnaheimCalifornia, United States · pop. 350,74289 kmINot felt
Santa AnaCalifornia, United States · pop. 310,22790 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. Likely felt out to about 1 km.

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 1.01.6 km34.08° N, 116.99° 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 362 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 2 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 362 g of TNT.

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

Aftershocks and nearby activity

109 later earthquakes within 30 km; the largest was M2.2 13 days ago. 35 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
3.071.012
17.531.217
17.551.618
31.800.514
31.880.36
36.641.14
36.871.26
37.671.34
37.730.85
38.080.69
38.361.010
39.331.15
39.881.15
39.921.85
40.041.14
42.640.85
42.951.07
42.971.34
43.172.05
43.651.33
46.510.614
46.580.94
46.791.14
47.410.84
48.940.83
51.300.515
62.620.818
65.440.94
70.302.24
70.430.94
71.492.26
71.491.37
71.501.04
71.530.94
71.910.94
71.911.23
73.201.36
73.201.87
73.940.65
74.200.73
74.300.68
75.260.54
75.600.96
75.601.06
75.610.74
76.590.84
76.831.24
76.980.93
77.200.75
77.210.75
77.240.54
77.640.96
77.651.65
77.701.06
78.800.85
80.530.74
80.541.14
88.360.97
91.481.04
100.480.613
104.760.76
105.071.25
105.100.95
105.261.08
109.892.16
116.941.117
117.851.04
119.110.65
127.250.316
128.190.75
128.450.99
143.030.89
144.791.18
150.270.69
162.041.113
169.040.51
170.782.014
170.890.612
183.351.915
183.370.82
183.971.514
184.421.51
194.670.413
194.680.916
195.040.713
195.090.714
201.010.817
219.540.716
222.090.714
226.270.99
240.540.514
243.440.617
244.481.04
258.021.316
265.271.513
267.241.017
268.061.016
269.601.16
295.500.520
307.720.917
331.021.417
332.131.55
341.671.18
342.470.99
352.641.115
358.130.93
384.890.917
386.590.414
402.791.313
  1. 2.2Near Loma Linda, California, United States10-30 02:04
  2. 2.2Near Loma Linda, California, United States10-30 03:15
  3. 2.1Near Loma Linda, California, United States10-31 17:40
  4. 2.07 km WSW of Calimesa, California, United States11-03 06:33
  5. 2.0Near Loma Linda, California, United States10-28 22:56
  6. 1.917 km ENE of Banning, California, United States11-03 19:07
  7. 1.8Near Loma Linda, California, United States10-28 19:41
  8. 1.8Near Loma Linda, California, United States10-30 04:58
  9. 1.616 km NE of Banning, California, United States10-27 21:19
  10. 1.6Near Loma Linda, California, United States10-30 09:25
  11. 1.56 km NNE of Cherry Valley, California, United States11-09 23:54
  12. 1.54 km ESE of Cherry Valley, California, United States11-03 19:44
  13. 1.5Near Loma Linda, California, United States11-07 05:02
  14. 1.510 km ESE of Big Bear City, California, United States11-03 20:11
  15. 1.4Near Beaumont, California, United States11-09 22:48
  16. 1.34 km SW of Redlands, California, United States10-28 23:25
  17. 1.35 km SW of Redlands, California, United States10-28 22:44
  18. 1.36 km SSW of Redlands, California, United States11-06 21:47
  19. 1.3Near Loma Linda, California, United States10-30 03:16
  20. 1.3Near Loma Linda, California, United States10-30 04:58
  21. 1.318 km NE of Banning, California, United States11-12 22:33
  22. 1.34 km SW of Redlands, California, United States10-28 17:26
  23. 1.216 km NE of Banning, California, United States10-27 21:18
  24. 1.2Near Loma Linda, California, United States10-30 03:41
  25. 1.2Near Loma Linda, California, United States10-31 12:50

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 ci41353367. First recorded here 27 Oct 2026, 03:49:11 UTC. Solutions: USGS · CI (usgs:ci41353367). Cite as: SeismoAtlas, “M0.9 earthquake 8 km NE of Yucaipa, California, United States”, https://seismoatlas.com/earthquake/ci41353367-m0-9-earthquake-8-km-ne-of-yucaipa-california-united-states, data from USGS.

JSON: /api/v1/events/ci41353367. SeismoAtlas is not an official warning service.