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M0.6 earthquake 4 km ESE of Moreno Valley, California, United States

A magnitude 0.6 earthquake struck 4 km ESE of Moreno Valley, California, United States at 01:15 local time (08:15 UTC) on 31 Oct 2026, at a depth of 13 km, according to USGS.

revised from M1.1

Data: USGS · updated 2026-11-02 15:38 UTC · reviewed

Magnitude
0.6micro
local magnitude (Richter) (ml)
revised from 1.1
Depth
13.3 km
Status
Reviewed
Origin time
2026-10-31 08:15:19 UTC
Local: 31 Oct 2026, 01:15:19 (America/Los Angeles)
Epicentre
33.928° N, 117.191° 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
Moreno ValleyCalifornia, United States · pop. 204,1984 kmINot felt
CalimesaCalifornia, United States · pop. 8,54215 kmINot felt
RedlandsCalifornia, United States · pop. 71,03515 kmINot felt
Loma LindaCalifornia, United States · pop. 24,04515 kmINot felt
PerrisCalifornia, United States · pop. 74,97117 kmINot felt
RiversideCalifornia, United States · pop. 317,26119 kmINot felt
IrvineCalifornia, United States · pop. 256,92765 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 Survey0.6 mlwas 1.113.3 km33.93° N, 117.19° 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 138 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 13 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 3.5× the energy of M0.6, and its waves are about 2.3× taller on a seismogram. Energy: 477 g of TNT vs 138 g of TNT.

Each square is the energy of one M0.6. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

43 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 M0.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
4.280.76
4.591.25
4.620.95
4.781.08
9.412.16
17.371.04
18.630.65
26.770.316
27.710.75
52.571.713
61.561.113
70.302.014
70.410.612
83.491.514
94.190.413
94.200.916
94.560.713
94.610.714
100.530.817
109.261.10
119.060.716
125.790.99
131.271.80
140.060.514
142.960.617
144.001.04
156.081.2-1
157.441.40
157.541.316
157.711.60
164.791.513
166.761.017
167.581.016
169.121.16
169.140.915
207.240.917
230.551.417
231.651.55
241.191.18
241.990.99
284.410.917
286.110.414
301.050.91
  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. 1.8Near El Cerrito Corona, California, United States11-05 19:31
  4. 1.76 km ENE of San Jacinto, California, United States11-02 12:49
  5. 1.64 km ESE of El Cerrito Corona, California, United States11-06 21:57
  6. 1.56 km NNE of Cherry Valley, California, United States11-09 23:54
  7. 1.54 km ESE of Cherry Valley, California, United States11-03 19:44
  8. 1.5Near Loma Linda, California, United States11-07 05:02
  9. 1.4Near Beaumont, California, United States11-09 22:48
  10. 1.4Near Home Gardens, California, United States11-06 21:41
  11. 1.36 km SSW of Redlands, California, United States11-06 21:47
  12. 1.2Near Home Gardens, California, United States11-06 20:20
  13. 1.2Near Loma Linda, California, United States10-31 12:50
  14. 1.1Near Loma Linda, California, United States11-07 09:22
  15. 1.1Near Cherry Valley, California, United States11-10 09:26
  16. 1.13 km NNW of Cherry Valley, California, United States11-02 21:48
  17. 1.1Near El Cerrito Corona, California, United States11-04 21:30
  18. 1.0Near Cherry Valley, California, United States10-31 13:02
  19. 1.04 km SW of Redlands, California, United States11-06 08:15
  20. 1.0Near Loma Linda, California, United States11-01 01:37
  21. 1.0Near Loma Linda, California, United States11-07 07:50
  22. 1.0Near Loma Linda, California, United States11-07 07:00
  23. 0.99 km NE of Nuevo, California, United States11-08 23:29
  24. 0.9Near San Bernardino, California, United States11-07 09:23
  25. 0.9Near Home Gardens, California, United States11-12 21:18

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Event id ci41570240. First recorded here 31 Oct 2026, 08:18:49 UTC. Solutions: USGS · CI (usgs:ci41570240). Cite as: SeismoAtlas, “M0.6 earthquake 4 km ESE of Moreno Valley, California, United States”, https://seismoatlas.com/earthquake/ci41570240-m0-6-earthquake-4-km-ese-of-moreno-valley-california-united-states, data from USGS.

JSON: /api/v1/events/ci41570240. SeismoAtlas is not an official warning service.