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M1.1 earthquake 4 km NNE of Banning, California, United States

A magnitude 1.1 earthquake struck 4 km NNE of Banning, California, United States at 17:42 local time (00:42 UTC) on 31 Oct 2026, at a depth of 17 km, according to USGS.

revised from M1.0

Data: USGS · updated 2026-11-02 15:54 UTC · reviewed

Magnitude
1.1micro
local magnitude (Richter) (ml)
revised from 1.0
Depth
17.1 km
Status
Reviewed
Origin time
2026-11-01 00:42:41 UTC
Local: 31 Oct 2026, 17:42:41 (America/Los Angeles)
Epicentre
33.964° N, 116.858° 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
BanningCalifornia, United States · pop. 30,9454 kmINot felt
Cherry ValleyCalifornia, United States · pop. 6,36211 kmINot felt
BeaumontCalifornia, United States · pop. 43,81112 kmINot felt
YucaipaCalifornia, United States · pop. 53,32818 kmINot felt
San JacintoCalifornia, United States · pop. 46,95123 kmINot felt
RiversideCalifornia, United States · pop. 317,26150 kmINot felt
IrvineCalifornia, United States · pop. 256,92795 kmINot felt
Santa AnaCalifornia, United States · pop. 310,22796 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 1.017.1 km33.96° N, 116.86° 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 674 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 17 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 1.4× the energy of M1.0, and its waves are about 1.3× taller on a seismogram. Energy: 674 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

28 later earthquakes within 30 km; the largest was M2.0 9 days ago. 18 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
26.090.89
33.330.69
36.121.713
45.101.113
53.842.014
53.950.612
53.980.81
66.411.915
67.031.514
77.740.413
77.750.916
78.150.616
84.070.817
105.150.714
109.330.99
123.610.514
178.560.520
190.790.917
194.180.717
214.091.417
215.201.55
221.510.61
224.731.18
225.540.99
235.711.115
267.950.917
269.660.414
285.861.313
  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. 1.76 km ENE of San Jacinto, California, United States11-02 12:49
  4. 1.56 km NNE of Cherry Valley, California, United States11-09 23:54
  5. 1.54 km ESE of Cherry Valley, California, United States11-03 19:44
  6. 1.4Near Beaumont, California, United States11-09 22:48
  7. 1.318 km NE of Banning, California, United States11-12 22:33
  8. 1.1Near Cherry Valley, California, United States11-10 09:26
  9. 1.118 km ENE of Banning, California, United States11-10 20:25
  10. 1.13 km NNW of Cherry Valley, California, United States11-02 21:48
  11. 0.99 km NE of Nuevo, California, United States11-08 23:29
  12. 0.9Near Cherry Valley, California, United States11-05 14:02
  13. 0.9Near Beaumont, California, United States11-04 06:27
  14. 0.9Near Cherry Valley, California, United States11-10 10:14
  15. 0.95 km E of Cherry Valley, California, United States11-12 04:39
  16. 0.811 km NE of Banning, California, United States11-02 02:48
  17. 0.821 km W of Yucca Valley, California, United States11-03 06:41
  18. 0.85 km W of Beaumont, California, United States11-04 12:47
  19. 0.716 km W of Desert Hot Springs, California, United States11-09 02:53
  20. 0.710 km SE of Banning, California, United States11-05 09:51
  21. 0.616 km E of Banning, California, United States11-04 06:51
  22. 0.614 km SW of Palm Springs, California, United States11-10 06:13
  23. 0.67 km W of Calimesa, California, United States11-03 06:39
  24. 0.65 km E of Banning, California, United States11-02 10:02
  25. 0.56 km NNE of Banning, California, United States11-08 11:16

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Reports on SeismoAtlas

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Event id ci41570632. First recorded here 1 Nov 2026, 00:45:24 UTC. Solutions: USGS · CI (usgs:ci41570632). Cite as: SeismoAtlas, “M1.1 earthquake 4 km NNE of Banning, California, United States”, https://seismoatlas.com/earthquake/ci41570632-m1-1-earthquake-4-km-nne-of-banning-california-united-states, data from USGS.

JSON: /api/v1/events/ci41570632. SeismoAtlas is not an official warning service.