Skip to content
SeismoAtlas

M1.0 earthquake near Loma Linda, California, United States

A magnitude 1.0 earthquake struck near Loma Linda, California, United States at 16:15 local time (23:15 UTC) on 30 Oct 2026, at a depth of 4 km, according to USGS.

Data: USGS · updated 2026-11-02 15:58 UTC · reviewed

Magnitude
1.0micro
local magnitude (Richter) (ml)
Depth
3.6 km
Status
Reviewed
Origin time
2026-10-30 23:15:37 UTC
Local: 30 Oct 2026, 16:15:37 (America/Los Angeles)
Epicentre
34.032° N, 117.247° 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
RedlandsCalifornia, United States · pop. 71,0357 kmINot felt
ColtonCalifornia, United States · pop. 54,6217 kmINot felt
San BernardinoCalifornia, United States · pop. 216,10810 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 Survey1.0 ml3.6 km34.03° N, 117.25° W–Reviewed · 1 revision

How big was it?

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

It released roughly the energy of 477 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 4 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

The same size.

Each square is the energy of one M1.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

46 later earthquakes within 30 km; the largest was M2.1 12 days ago. 75 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.0

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
9.000.613
9.621.09
13.270.76
13.581.25
13.610.95
13.771.08
18.412.16
26.371.04
27.620.65
35.770.316
36.700.75
50.301.19
70.561.113
79.292.014
79.400.612
92.481.514
103.190.413
103.200.916
103.560.713
103.600.714
109.520.817
128.060.716
134.790.99
151.950.617
153.001.04
159.790.97
166.441.40
166.531.316
173.781.513
175.751.017
176.581.016
178.111.16
178.130.915
208.381.011
216.240.917
221.610.87
239.541.417
240.651.55
247.841.113
250.181.18
250.990.99
260.391.08
266.650.93
293.331.110
295.110.414
303.111.69
  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. 1.05 km NNW of Fontana, California, United States11-10 19:39
  23. 1.0Near Loma Linda, California, United States11-07 07:50
  24. 1.0Near Loma Linda, California, United States11-07 07:00
  25. 0.99 km NE of Nuevo, California, United States11-08 23:29

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

How strong was the shaking where you were?

Anonymous. No account, no cookies. A short automatic check runs in your browser instead of a third-party captcha.

Reports on SeismoAtlas

No reports yet.

Event id ci41570072. First recorded here 30 Oct 2026, 23:20:09 UTC. Solutions: USGS · CI (usgs:ci41570072). Cite as: SeismoAtlas, “M1.0 earthquake near Loma Linda, California, United States”, https://seismoatlas.com/earthquake/ci41570072-m1-0-earthquake-near-loma-linda-california-united-states, data from USGS.

JSON: /api/v1/events/ci41570072. SeismoAtlas is not an official warning service.