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M2.0 earthquake near Loma Linda, California, United States

A magnitude 2.0 earthquake struck near Loma Linda, California, United States at 15:56 local time (22:56 UTC) on 28 Oct 2026, at a depth of 5 km, according to USGS.

revised from M1.9 · 2 reports to USGS “Did You Feel It?”

Data: USGS · updated 2026-10-29 15:37 UTC · reviewed

Magnitude
2.0micro
local magnitude (Richter) (ml)
revised from 1.9
Depth
4.8 km
Status
Reviewed
Origin time
2026-10-28 22:56:45 UTC
Local: 28 Oct 2026, 15:56:45 (America/Los Angeles)
Epicentre
34.031° N, 117.240° 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. 24,0453 kmIIIWeak
RedlandsCalifornia, United States · pop. 71,0356 kmIIWeak
ColtonCalifornia, United States · pop. 54,6218 kmIIWeak
San BernardinoCalifornia, United States · pop. 216,10810 kmIIWeak
RiversideCalifornia, United States · pop. 317,26117 kmINot felt
AnaheimCalifornia, United States · pop. 350,74265 kmINot felt
Santa AnaCalifornia, United States · pop. 310,22766 kmINot felt
IrvineCalifornia, United States · pop. 256,92767 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. Likely felt out to about 3 km.

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 Survey2.0 mlwas 1.94.8 km34.03° N, 117.24° 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 15 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 5 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.0 releases about 32× the energy of M1.0, and its waves are about 10× taller on a seismogram. Energy: 15 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

85 later earthquakes within 30 km; the largest was M2.2 13 days ago. 54 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.0

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.311.0-1
0.481.33
3.340.614
3.410.94
3.621.14
4.240.84
5.770.83
22.270.94
27.132.24
27.260.94
28.322.26
28.321.37
28.331.04
28.360.94
28.740.94
28.741.23
30.031.36
30.031.87
30.770.65
31.030.73
31.130.68
32.090.54
32.430.96
32.431.06
32.440.74
33.420.84
33.661.24
33.810.93
34.030.75
34.040.75
34.070.54
34.470.96
34.491.65
34.531.06
35.630.85
37.360.74
37.371.14
41.691.010
45.190.97
48.311.04
57.310.613
57.941.09
61.590.76
61.901.25
61.930.95
62.091.08
66.722.16
74.681.04
75.940.65
84.080.316
85.020.75
98.611.19
118.871.113
127.612.014
127.720.612
140.801.514
151.500.413
151.510.916
151.870.713
151.920.714
157.840.817
176.370.716
183.100.99
200.270.617
201.311.04
208.100.97
214.851.316
222.101.513
224.071.017
224.891.016
226.431.16
226.450.915
264.550.917
269.930.87
287.851.417
288.961.55
296.151.113
298.501.18
299.300.99
308.711.08
314.960.93
341.651.110
341.720.917
343.420.414
351.421.69
  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. 1.8Near Loma Linda, California, United States10-30 04:58
  6. 1.6Near Loma Linda, California, United States10-30 09:25
  7. 1.64 km N of Jurupa Valley, California, United States11-12 14:22
  8. 1.56 km NNE of Cherry Valley, California, United States11-09 23:54
  9. 1.54 km ESE of Cherry Valley, California, United States11-03 19:44
  10. 1.5Near Loma Linda, California, United States11-07 05:02
  11. 1.4Near Beaumont, California, United States11-09 22:48
  12. 1.34 km SW of Redlands, California, United States10-28 23:25
  13. 1.36 km SSW of Redlands, California, United States11-06 21:47
  14. 1.3Near Loma Linda, California, United States10-30 03:16
  15. 1.3Near Loma Linda, California, United States10-30 04:58
  16. 1.2Near Loma Linda, California, United States10-30 03:41
  17. 1.2Near Loma Linda, California, United States10-31 12:50
  18. 1.2Near Loma Linda, California, United States10-30 08:36
  19. 1.1Near Loma Linda, California, United States10-29 02:34
  20. 1.111 km NW of Muscoy, California, United States11-10 07:05
  21. 1.1Near Loma Linda, California, United States11-07 09:22
  22. 1.1Near Cherry Valley, California, United States11-10 09:26
  23. 1.1Near Loma Linda, California, United States10-30 12:18
  24. 1.113 km NE of Rancho Cucamonga, California, United States11-02 01:33
  25. 1.114 km WNW of Muscoy, California, United States11-12 04:35

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.

USGS “Did You Feel It?” has 2 reports: add yours at USGS.

Event id ci41568496. First recorded here 28 Oct 2026, 22:59:23 UTC. Solutions: USGS · CI (usgs:ci41568496). Cite as: SeismoAtlas, “M2.0 earthquake near Loma Linda, California, United States”, https://seismoatlas.com/earthquake/ci41568496-m2-0-earthquake-near-loma-linda-california-united-states, data from USGS.

JSON: /api/v1/events/ci41568496. SeismoAtlas is not an official warning service.