Skip to content
SeismoAtlas

M1.6 earthquake 22 km SSE of Big Bear City, California, United States

A magnitude 1.6 earthquake struck 22 km SSE of Big Bear City, California, United States at 17:19 local time (00:19 UTC) on 9 Oct 2026, at a depth of 12 km, according to USGS.

revised from M1.8

Data: USGS · updated 2026-10-11 14:50 UTC · reviewed

Magnitude
1.6micro
local magnitude (Richter) (ml)
revised from 1.8
Depth
11.8 km
Status
Reviewed
Origin time
2026-10-10 00:19:23 UTC
Local: 9 Oct 2026, 17:19:23 (America/Los Angeles)
Epicentre
34.094° N, 116.718° 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 CityCalifornia, United States · pop. 12,30422 kmINot felt
BanningCalifornia, United States · pop. 30,94524 kmINot felt
Desert Hot SpringsCalifornia, United States · pop. 28,33525 kmINot felt
Yucca ValleyCalifornia, United States · pop. 21,60027 kmINot felt
BeaumontCalifornia, United States · pop. 43,81130 kmINot felt
RiversideCalifornia, United States · pop. 317,26165 kmINot felt
IrvineCalifornia, United States · pop. 256,927112 kmINot felt
Santa AnaCalifornia, United States · pop. 310,227113 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 Survey1.6 mlwas 1.811.8 km34.09° N, 116.72° 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 4 kg 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 12 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.6 releases about 9.1× the energy of M1.0, and its waves are about 4.4× taller on a seismogram. Energy: 4 kg 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

55 later earthquakes within 30 km; the largest was M1.9 9 days ago. 12 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
5.661.918
13.481.14
15.750.610
18.340.96
50.140.819
61.520.316
64.631.18
77.320.818
100.580.82
108.180.710
115.020.69
132.811.37
138.460.813
166.521.516
187.691.14
202.850.59
222.180.71
232.311.117
263.521.216
305.300.89
309.251.113
333.820.613
346.651.04
356.031.013
388.120.417
394.810.512
398.601.214
411.450.92
428.981.217
429.011.618
443.250.514
449.530.69
449.811.010
462.760.515
474.070.818
516.711.08
528.391.117
531.421.012
539.900.99
554.480.89
556.241.18
561.720.69
573.491.113
580.490.51
582.370.81
594.801.915
594.830.82
595.421.514
595.881.51
606.540.616
633.540.714
637.720.99
652.000.514
700.300.93
706.950.520
  1. 1.917 km ENE of Banning, California, United States11-03 19:07
  2. 1.95 km ESE of Yucaipa, California, United States10-10 05:59
  3. 1.616 km NE of Banning, California, United States10-27 21:19
  4. 1.515 km W of Desert Hot Springs, California, United States10-16 22:50
  5. 1.54 km ESE of Cherry Valley, California, United States11-03 19:44
  6. 1.510 km ESE of Big Bear City, California, United States11-03 20:11
  7. 1.35 km NW of Big Bear Lake, California, United States10-15 13:08
  8. 1.216 km NE of Banning, California, United States10-27 21:18
  9. 1.213 km ESE of Banning, California, United States10-20 23:50
  10. 1.28 km NE of Banning, California, United States10-26 14:55
  11. 1.14 km NNE of Banning, California, United States11-01 00:42
  12. 1.14 km NNW of Big Bear City, California, United States10-17 20:00
  13. 1.15 km NE of Cherry Valley, California, United States10-22 21:34
  14. 1.113 km NE of Yucaipa, California, United States10-12 16:57
  15. 1.1Near Big Bear City, California, United States11-02 04:33
  16. 1.14 km NNW of Big Bear City, California, United States10-10 13:48
  17. 1.19 km NNE of Banning, California, United States10-19 16:37
  18. 1.13 km NNW of Cherry Valley, California, United States11-02 21:48
  19. 1.06 km N of Banning, California, United States10-28 18:08
  20. 1.0Near Cherry Valley, California, United States10-31 13:02
  21. 1.09 km ENE of Banning, California, United States10-24 20:21
  22. 1.021 km ENE of Big Bear City, California, United States11-01 03:44
  23. 1.0Near Banning, California, United States10-24 10:58
  24. 0.9Near Cherry Valley, California, United States11-05 14:02
  25. 0.98 km NE of Yucaipa, California, United States10-27 03:46

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 ci41345823. First recorded here 10 Oct 2026, 00:22:20 UTC. Solutions: USGS · CI (usgs:ci41345823). Cite as: SeismoAtlas, “M1.6 earthquake 22 km SSE of Big Bear City, California, United States”, https://seismoatlas.com/earthquake/ci41345823-m1-6-earthquake-22-km-sse-of-big-bear-city-california-united-states, data from USGS.

JSON: /api/v1/events/ci41345823. SeismoAtlas is not an official warning service.