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M0.9 earthquake near Loma Linda, California, United States

A magnitude 0.9 earthquake struck near Loma Linda, California, United States at 13:08 local time (20:08 UTC) on 30 Oct 2026, at a depth of 7 km, according to USGS.

Data: USGS · updated 2026-10-30 20:34 UTC · reviewed

Magnitude
0.9micro
local magnitude (Richter) (ml)
Depth
6.6 km
Status
Reviewed
Origin time
2026-10-30 20:08:18 UTC
Local: 30 Oct 2026, 13:08:18 (America/Los Angeles)
Epicentre
34.036° N, 117.248° 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. 24,0452 kmINot felt
Grand TerraceCalifornia, United States · pop. 12,4646 kmINot felt
ColtonCalifornia, United States · pop. 54,6217 kmINot felt
RedlandsCalifornia, United States · pop. 71,0357 kmINot felt
San BernardinoCalifornia, United States · pop. 216,1089 kmINot felt
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

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 Survey0.9 ml6.6 km34.04° N, 117.25° W–Reviewed

How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 388 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 7 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.0 releases about 1.2× the energy of M0.9, and its waves are about 1.1× taller on a seismogram. Energy: 477 g of TNT vs 388 g of TNT.

Each square is the energy of one M0.9. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

47 later earthquakes within 30 km; the largest was M2.1 12 days ago. 73 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
3.121.04
12.120.613
12.751.09
16.400.76
16.711.25
16.730.95
16.901.08
21.532.16
29.491.04
30.740.65
38.890.316
39.820.75
53.421.19
73.681.113
82.412.014
82.530.612
95.601.514
106.310.413
106.320.916
106.680.713
106.720.714
112.650.817
131.180.716
137.910.99
155.070.617
156.121.04
162.910.97
169.561.40
169.661.316
176.911.513
178.881.017
179.701.016
181.231.16
181.260.915
211.501.011
219.360.917
224.740.87
242.661.417
243.771.55
250.961.113
253.301.18
254.110.99
263.511.08
269.770.93
296.461.110
298.230.414
306.231.69
  1. 2.1Near Loma Linda, California, United States10-31 17:40
  2. 2.07 km WSW of Calimesa, California, United States11-03 06:33
  3. 1.64 km N of Jurupa Valley, California, United States11-12 14:22
  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. 1.5Near Loma Linda, California, United States11-07 05:02
  7. 1.4Near Beaumont, California, United States11-09 22:48
  8. 1.4Near Home Gardens, California, United States11-06 21:41
  9. 1.36 km SSW of Redlands, California, United States11-06 21:47
  10. 1.2Near Loma Linda, California, United States10-31 12:50
  11. 1.111 km NW of Muscoy, California, United States11-10 07:05
  12. 1.1Near Loma Linda, California, United States11-07 09:22
  13. 1.1Near Cherry Valley, California, United States11-10 09:26
  14. 1.113 km NE of Rancho Cucamonga, California, United States11-02 01:33
  15. 1.114 km WNW of Muscoy, California, United States11-12 04:35
  16. 1.13 km NNW of Cherry Valley, California, United States11-02 21:48
  17. 1.0Near Cherry Valley, California, United States10-31 13:02
  18. 1.04 km SW of Redlands, California, United States11-06 08:15
  19. 1.05 km ENE of Rancho Cucamonga, California, United States11-08 15:38
  20. 1.04 km N of Jurupa Valley, California, United States10-31 08:53
  21. 1.0Near Loma Linda, California, United States11-01 01:37
  22. 1.0Near Loma Linda, California, United States10-30 23:15
  23. 1.05 km NNW of Fontana, California, United States11-10 19:39
  24. 1.0Near Loma Linda, California, United States11-07 07:50
  25. 1.0Near Loma Linda, California, United States11-07 07:00

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Event id ci41570008. First recorded here 30 Oct 2026, 20:35:07 UTC. Solutions: USGS · CI (usgs:ci41570008). Cite as: SeismoAtlas, “M0.9 earthquake near Loma Linda, California, United States”, https://seismoatlas.com/earthquake/ci41570008-m0-9-earthquake-near-loma-linda-california-united-states, data from USGS.

JSON: /api/v1/events/ci41570008. SeismoAtlas is not an official warning service.