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M1.6 earthquake 5 km SE of Mentone, California, United States

A magnitude 1.6 earthquake struck 5 km SE of Mentone, California, United States at 18:46 local time (01:46 UTC) on 24 Oct 2026, at a depth of 13 km, according to USGS.

Data: USGS · updated 2026-10-25 13:47 UTC · reviewed

Magnitude
1.6micro
local magnitude (Richter) (ml)
Depth
13.2 km
Status
Reviewed
Origin time
2026-10-25 01:46:47 UTC
Local: 24 Oct 2026, 18:46:47 (America/Los Angeles)
Epicentre
34.042° N, 117.092° 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
MentoneCalifornia, United States · pop. 8,7205 kmINot felt
YucaipaCalifornia, United States · pop. 53,3285 kmINot felt
RedlandsCalifornia, United States · pop. 71,0358 kmINot felt
HighlandCalifornia, United States · pop. 54,85415 kmINot felt
Loma LindaCalifornia, United States · pop. 24,04515 kmINot felt
RiversideCalifornia, United States · pop. 317,26130 kmINot felt
AnaheimCalifornia, United States · pop. 350,74279 kmINot felt
Santa AnaCalifornia, United States · pop. 310,22779 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 1.613.2 km34.04° N, 117.09° 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 3 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 13 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 6.9× the energy of M1.0, and its waves are about 3.6× taller on a seismogram. Energy: 3 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

109 later earthquakes within 30 km; the largest was M2.2 13 days ago. 34 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
6.330.811
6.670.76
10.730.611
26.660.417
29.390.612
33.350.512
35.910.68
37.151.214
42.951.02
46.770.813
46.771.011
50.000.92
53.071.012
81.880.36
86.631.14
86.871.26
87.671.34
87.730.85
88.361.010
89.331.15
89.871.15
89.911.85
90.041.14
92.640.85
92.951.07
92.961.34
93.172.05
93.651.33
96.510.614
96.580.94
96.791.14
97.400.84
98.930.83
112.610.818
115.440.94
120.292.24
120.430.94
121.482.26
121.491.37
121.501.04
121.520.94
121.910.94
121.911.23
123.191.36
123.201.87
123.930.65
124.200.73
124.290.68
125.250.54
125.590.96
125.591.06
125.600.74
126.590.84
126.831.24
126.970.93
127.190.75
127.200.75
127.240.54
127.640.96
127.651.65
127.701.06
128.790.85
130.530.74
130.531.14
134.851.010
138.360.97
141.481.04
150.480.613
154.760.76
155.061.25
155.090.95
155.251.08
159.892.16
166.931.117
167.851.04
169.100.65
177.250.316
178.180.75
193.030.89
200.260.69
212.041.113
220.772.014
220.880.612
233.961.514
244.670.413
244.680.916
245.040.713
245.080.714
251.010.817
269.540.716
276.270.99
290.540.514
293.430.617
294.481.04
308.011.316
315.271.513
317.231.017
318.061.016
319.591.16
319.610.915
345.490.520
357.720.917
381.021.417
382.131.55
391.661.18
392.470.99
408.130.93
434.880.917
436.590.414
  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. 1.8Near Loma Linda, California, United States10-28 19:41
  7. 1.8Near Loma Linda, California, United States10-30 04:58
  8. 1.6Near Loma Linda, California, United States10-30 09:25
  9. 1.56 km NNE of Cherry Valley, California, United States11-09 23:54
  10. 1.54 km ESE of Cherry Valley, California, United States11-03 19:44
  11. 1.5Near Loma Linda, California, United States11-07 05:02
  12. 1.4Near Beaumont, California, United States11-09 22:48
  13. 1.34 km SW of Redlands, California, United States10-28 23:25
  14. 1.35 km SW of Redlands, California, United States10-28 22:44
  15. 1.36 km SSW of Redlands, California, United States11-06 21:47
  16. 1.3Near Loma Linda, California, United States10-30 03:16
  17. 1.3Near Loma Linda, California, United States10-30 04:58
  18. 1.34 km SW of Redlands, California, United States10-28 17:26
  19. 1.2Near Loma Linda, California, United States10-30 03:41
  20. 1.2Near Loma Linda, California, United States10-31 12:50
  21. 1.24 km SW of Redlands, California, United States10-28 16:38
  22. 1.2Near Loma Linda, California, United States10-30 08:36
  23. 1.28 km NE of Banning, California, United States10-26 14:55
  24. 1.1Near Loma Linda, California, United States10-29 02:34
  25. 1.14 km SW of Redlands, California, United States10-28 19:39

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 ci41352015. First recorded here 25 Oct 2026, 01:49:23 UTC. Solutions: USGS · CI (usgs:ci41352015). Cite as: SeismoAtlas, “M1.6 earthquake 5 km SE of Mentone, California, United States”, https://seismoatlas.com/earthquake/ci41352015-m1-6-earthquake-5-km-se-of-mentone-california-united-states, data from USGS.

JSON: /api/v1/events/ci41352015. SeismoAtlas is not an official warning service.