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M1.2 earthquake 13 km ESE of Banning, California, United States

A magnitude 1.2 earthquake struck 13 km ESE of Banning, California, United States at 16:50 local time (23:50 UTC) on 20 Oct 2026, at a depth of 16 km, according to USGS.

revised from M1.6

Data: USGS · updated 2026-10-21 13:25 UTC · reviewed

Magnitude
1.2micro
local magnitude (Richter) (ml)
revised from 1.6
Depth
16.1 km
Status
Reviewed
Origin time
2026-10-20 23:50:22 UTC
Local: 20 Oct 2026, 16:50:22 (America/Los Angeles)
Epicentre
33.882° N, 116.747° 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. 30,94513 kmINot felt
Palm SpringsCalifornia, United States · pop. 47,37119 kmINot felt
BeaumontCalifornia, United States · pop. 43,81122 kmINot felt
San JacintoCalifornia, United States · pop. 46,95123 kmINot felt
RiversideCalifornia, United States · pop. 317,26161 kmINot felt
IrvineCalifornia, United States · pop. 256,927102 kmINot felt
Santa AnaCalifornia, United States · pop. 310,227105 kmINot felt
AnaheimCalifornia, United States · pop. 350,742107 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 Survey1.2 mlwas 1.616.1 km33.88° N, 116.75° 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 951 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 16 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.2 releases about 2× the energy of M1.0, and its waves are about 1.6× taller on a seismogram. Energy: 951 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

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

Aftershocks

Mainshock M1.2

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
4.600.415
4.700.714
22.150.113
27.820.415
28.070.614
41.780.89
44.301.05
45.731.113
52.380.417
54.020.515
64.120.913
81.551.16
83.141.04
85.320.414
85.320.514
85.430.815
92.010.514
92.511.013
112.490.515
122.310.718
122.611.217
124.600.417
131.290.512
135.091.214
142.741.719
147.33-0.013
151.950.217
162.310.615
165.461.217
165.491.618
179.730.514
185.220.512
186.010.69
186.301.010
186.501.016
199.240.515
201.321.113
201.370.113
208.380.913
210.550.818
218.770.516
219.971.011
227.190.516
227.220.414
245.180.515
245.980.918
253.191.08
257.780.516
262.580.516
264.871.117
268.630.417
274.850.313
286.530.616
290.970.89
298.200.69
299.590.914
300.991.713
309.981.113
318.860.81
331.281.915
331.901.514
342.610.413
342.620.916
343.020.616
348.950.817
352.631.416
360.220.814
370.020.714
374.210.99
388.480.514
419.980.715
435.040.412
443.430.520
459.050.717
466.490.210
476.080.416
478.961.417
480.071.55
486.380.716
486.380.61
489.601.18
490.410.99
490.670.315
492.110.617
500.581.115
525.740.916
530.240.717
532.820.917
534.530.414
550.731.313
  1. 1.917 km ENE of Banning, California, United States11-03 19:07
  2. 1.76 km ENE of San Jacinto, California, United States11-02 12:49
  3. 1.714 km SE of Valle Vista, California, United States10-26 22:35
  4. 1.616 km NE of Banning, California, United States10-27 21:19
  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. 1.417 km ESE of Valle Vista, California, United States11-04 16:28
  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. 1.27 km SE of Valle Vista, California, United States10-26 02:26
  12. 1.28 km NE of Banning, California, United States10-26 14:55
  13. 1.1Near San Jacinto, California, United States10-24 09:23
  14. 1.1Near Cherry Valley, California, United States11-10 09:26
  15. 1.14 km NNE of Banning, California, United States11-01 00:42
  16. 1.15 km NE of Cherry Valley, California, United States10-22 21:34
  17. 1.118 km ENE of Banning, California, United States11-10 20:25
  18. 1.123 km SE of Valle Vista, California, United States10-29 09:09
  19. 1.13 km NNW of Cherry Valley, California, United States11-02 21:48
  20. 1.06 km N of Banning, California, United States10-28 18:08
  21. 1.0Near Cherry Valley, California, United States10-31 13:02
  22. 1.09 km ENE of Banning, California, United States10-24 20:21
  23. 1.014 km SSE of Valle Vista, California, United States10-30 03:48
  24. 1.09 km ESE of Valle Vista, California, United States10-22 20:08
  25. 1.0Near Banning, California, United States10-24 10:58

Did you feel it?

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Reports on SeismoAtlas

No reports yet.

Event id ci41349911. First recorded here 20 Oct 2026, 23:53:12 UTC. Solutions: USGS · CI (usgs:ci41349911). Cite as: SeismoAtlas, “M1.2 earthquake 13 km ESE of Banning, California, United States”, https://seismoatlas.com/earthquake/ci41349911-m1-2-earthquake-13-km-ese-of-banning-california-united-states, data from USGS.

JSON: /api/v1/events/ci41349911. SeismoAtlas is not an official warning service.