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M1.4 earthquake near Loma Linda, California, United States

A magnitude 1.4 earthquake struck near Loma Linda, California, United States at 12:45 local time (19:45 UTC) on 7 Oct 2026, at a depth of 16 km, according to USGS.

revised from M1.5

Data: USGS · updated 2026-10-07 21:16 UTC · reviewed

Magnitude
1.4micro
local magnitude (Richter) (ml)
revised from 1.5
Depth
15.7 km
Status
Reviewed
Origin time
2026-10-07 19:45:45 UTC
Local: 7 Oct 2026, 12:45:45 (America/Los Angeles)
Epicentre
34.055° N, 117.273° 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
Loma LindaCalifornia, United States · pop. 24,0451 kmINot felt
ColtonCalifornia, United States · pop. 54,6214 kmINot felt
San BernardinoCalifornia, United States · pop. 216,1086 kmINot felt
RedlandsCalifornia, United States · pop. 71,0359 kmINot felt
RiversideCalifornia, United States · pop. 317,26116 kmINot felt
AnaheimCalifornia, United States · pop. 350,74263 kmINot felt
Santa AnaCalifornia, United States · pop. 310,22765 kmINot felt
IrvineCalifornia, United States · pop. 256,92766 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 Survey1.4 mlwas 1.515.7 km34.05° N, 117.27° 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 2 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 16 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.4 releases about 4.7× the energy of M1.0, and its waves are about 2.8× taller on a seismogram. Energy: 2 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

187 later earthquakes within 30 km; the largest was M2.7 35 days ago. 29 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.4

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
5.890.96
6.641.57
6.861.16
10.150.96
12.010.916
12.100.97
12.391.47
12.392.76
12.651.16
14.271.07
14.491.27
14.820.77
14.910.87
14.910.97
15.061.27
16.050.47
16.101.05
18.741.16
19.640.76
20.061.816
20.700.55
20.740.97
20.900.87
33.671.217
36.620.75
38.600.87
50.051.75
53.090.911
58.221.918
58.541.014
59.160.85
66.370.914
70.081.516
79.661.014
83.481.115
103.341.13
113.150.918
114.080.316
115.000.914
124.311.54
124.540.415
156.061.715
164.741.04
174.770.615
182.801.03
198.890.818
205.142.417
220.131.56
220.601.717
220.611.517
230.190.75
248.681.116
251.910.912
252.430.712
263.901.615
267.830.916
274.852.416
283.641.317
283.701.317
311.591.014
311.631.06
311.851.1-1
318.790.77
320.601.117
333.571.015
344.361.37
347.490.94
347.961.04
348.361.34
349.820.95
350.100.95
350.761.213
357.861.114
368.300.53
369.191.84
369.210.96
370.081.05
370.081.55
370.880.715
372.641.34
373.832.07
373.871.67
373.881.37
374.850.87
401.610.99
409.341.13
410.870.71
411.390.89
414.021.613
414.890.78
420.350.811
420.690.76
424.750.611
428.511.48
439.721.012
443.400.612
449.531.67
449.930.68
451.911.06
456.971.02
459.410.97
460.780.813
460.791.011
462.790.77
464.010.92
467.091.012
480.290.90
485.871.213
495.900.36
500.651.14
500.891.26
501.681.34
501.740.85
503.341.15
503.891.15
503.931.85
504.061.14
506.660.85
506.971.07
506.981.34
507.182.05
507.491.0-1
507.671.33
510.530.614
510.590.94
510.801.14
511.420.84
512.950.83
529.460.94
534.312.24
534.450.94
534.681.37
535.502.26
535.511.37
535.521.04
535.540.94
535.920.94
535.931.23
537.211.36
537.221.87
537.950.65
538.220.73
538.310.68
539.270.54
539.610.96
539.611.06
539.620.74
540.600.84
540.851.24
540.990.93
541.210.75
541.220.75
541.250.54
541.660.96
541.671.65
541.721.06
542.810.85
544.540.74
544.551.14
548.871.010
551.260.90
552.380.97
555.501.04
564.490.613
565.121.09
568.770.76
569.081.25
569.110.95
573.902.16
578.321.111
581.871.04
583.120.65
591.260.316
592.200.75
605.801.19
626.051.113
634.792.014
634.900.612
658.690.413
659.050.713
659.100.714
665.020.817
668.171.24
683.560.716
707.450.617
708.501.04
715.290.97
  1. 2.74 km WNW of Fontana, California, United States10-08 08:09
  2. 2.4Near Loma Linda, California, United States10-19 06:36
  3. 2.43 km NW of Calimesa, California, United States10-16 08:53
  4. 2.2Near Loma Linda, California, United States10-30 02:04
  5. 2.2Near Loma Linda, California, United States10-30 03:15
  6. 2.1Near Loma Linda, California, United States10-31 17:40
  7. 2.04 km WNW of Fontana, California, United States10-23 09:35
  8. 2.07 km WSW of Calimesa, California, United States11-03 06:33
  9. 2.0Near Loma Linda, California, United States10-28 22:56
  10. 1.95 km ESE of Yucaipa, California, United States10-10 05:59
  11. 1.8Near Loma Linda, California, United States10-28 19:41
  12. 1.8Near Loma Linda, California, United States10-30 04:58
  13. 1.8Near Colton, California, United States10-08 15:49
  14. 1.85 km ESE of Loma Linda, California, United States10-23 04:57
  15. 1.77 km WNW of Jurupa Valley, California, United States10-09 21:48
  16. 1.7Near Redlands, California, United States10-14 07:49
  17. 1.74 km WSW of Beaumont, California, United States10-17 00:21
  18. 1.64 km W of Fontana, California, United States10-26 13:17
  19. 1.6Near Loma Linda, California, United States10-30 09:25
  20. 1.64 km WNW of Fontana, California, United States10-23 09:37
  21. 1.6Near Loma Linda, California, United States10-18 19:39
  22. 1.65 km SE of Mentone, California, United States10-25 01:46
  23. 1.5Near Colton, California, United States10-10 17:50
  24. 1.514 km WNW of Muscoy, California, United States10-16 23:53
  25. 1.5Near Fontana, California, United States10-13 00:04

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Reports on SeismoAtlas

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Event id ci41344663. First recorded here 7 Oct 2026, 19:49:14 UTC. Solutions: USGS · CI (usgs:ci41344663). Cite as: SeismoAtlas, “M1.4 earthquake near Loma Linda, California, United States”, https://seismoatlas.com/earthquake/ci41344663-m1-4-earthquake-near-loma-linda-california-united-states, data from USGS.

JSON: /api/v1/events/ci41344663. SeismoAtlas is not an official warning service.