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M0.6 earthquake 8 km S of Big Bear Lake, California, United States

A magnitude 0.6 earthquake struck 8 km S of Big Bear Lake, California, United States at 15:08 local time (22:08 UTC) on 23 Oct 2026, at a depth of 13 km, according to USGS.

revised from M0.8

Data: USGS · updated 2026-10-25 18:45 UTC · reviewed

Magnitude
0.6micro
local magnitude (Richter) (ml)
revised from 0.8
Depth
13.5 km
Status
Reviewed
Origin time
2026-10-23 22:08:25 UTC
Local: 23 Oct 2026, 15:08:25 (America/Los Angeles)
Epicentre
34.165° N, 116.897° 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
Big Bear LakeCalifornia, United States · pop. 5,2138 kmINot felt
Big Bear CityCalifornia, United States · pop. 12,30411 kmINot felt
YucaipaCalifornia, United States · pop. 53,32820 kmINot felt
BanningCalifornia, United States · pop. 30,94526 kmINot felt
BeaumontCalifornia, United States · pop. 43,81127 kmINot felt
RedlandsCalifornia, United States · pop. 71,03529 kmINot felt
RiversideCalifornia, United States · pop. 317,26152 kmINot felt
AnaheimCalifornia, United States · pop. 350,742100 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 Survey0.6 mlwas 0.813.5 km34.16° N, 116.90° W–Reviewed · 1 revision

How big was it?

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

It released roughly the energy of 124 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 13 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 3.8× the energy of M0.6, and its waves are about 2.5× taller on a seismogram. Energy: 477 g of TNT vs 124 g of TNT.

Each square is the energy of one M0.6. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

45 later earthquakes within 30 km; the largest was M2.0 9 days ago. 10 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
12.841.04
22.211.013
27.641.613
54.300.417
60.990.512
63.550.68
64.791.214
77.640.92
95.161.217
95.191.618
109.430.514
109.520.36
115.710.69
116.001.010
128.940.515
140.250.818
182.891.08
194.571.117
206.080.99
220.670.89
222.421.18
227.900.69
239.681.113
246.670.51
248.412.014
248.520.612
248.550.81
260.981.915
261.010.82
261.601.514
262.061.51
272.320.916
278.640.817
303.910.99
373.130.520
388.750.717
408.661.417
409.771.55
419.301.18
420.110.99
430.281.115
435.770.93
462.520.917
464.230.414
480.431.313
  1. 2.07 km WSW of Calimesa, California, United States11-03 06:33
  2. 1.917 km ENE of Banning, California, United States11-03 19:07
  3. 1.616 km NE of Banning, California, United States10-27 21:19
  4. 1.65 km SE of Mentone, California, United States10-25 01:46
  5. 1.56 km NNE of Cherry Valley, California, United States11-09 23:54
  6. 1.54 km ESE of Cherry Valley, California, United States11-03 19:44
  7. 1.510 km ESE of Big Bear City, California, United States11-03 20:11
  8. 1.4Near Beaumont, California, United States11-09 22:48
  9. 1.318 km NE of Banning, California, United States11-12 22:33
  10. 1.216 km NE of Banning, California, United States10-27 21:18
  11. 1.28 km NE of Banning, California, United States10-26 14:55
  12. 1.1Near Cherry Valley, California, United States11-10 09:26
  13. 1.14 km NNE of Banning, California, United States11-01 00:42
  14. 1.118 km ENE of Banning, California, United States11-10 20:25
  15. 1.1Near Big Bear City, California, United States11-02 04:33
  16. 1.13 km NNW of Cherry Valley, California, United States11-02 21:48
  17. 1.06 km N of Banning, California, United States10-28 18:08
  18. 1.0Near Cherry Valley, California, United States10-31 13:02
  19. 1.09 km ENE of Banning, California, United States10-24 20:21
  20. 1.0Near Banning, California, United States10-24 10:58
  21. 0.9Near Cherry Valley, California, United States11-05 14:02
  22. 0.98 km NE of Yucaipa, California, United States10-27 03:46
  23. 0.9Near Beaumont, California, United States11-04 06:27
  24. 0.9Near Big Bear City, California, United States11-01 12:13
  25. 0.911 km E of Lake Arrowhead, California, United States11-11 01:54

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

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Reports on SeismoAtlas

No reports yet.

Event id ci41351383. First recorded here 23 Oct 2026, 22:12:14 UTC. Solutions: USGS · CI (usgs:ci41351383). Cite as: SeismoAtlas, “M0.6 earthquake 8 km S of Big Bear Lake, California, United States”, https://seismoatlas.com/earthquake/ci41351383-m0-6-earthquake-8-km-s-of-big-bear-lake-california-united-states, data from USGS.

JSON: /api/v1/events/ci41351383. SeismoAtlas is not an official warning service.