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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 04:14 local time (11:14 UTC) on 23 Sept 2026, at a depth of 13 km, according to USGS.

Data: USGS · updated 2026-09-23 12:52 UTC · reviewed

Magnitude
0.6micro
local magnitude (Richter) (ml)
Depth
13.1 km
Status
Reviewed
Origin time
2026-09-23 11:14:09 UTC
Local: 23 Sept 2026, 04:14:09 (America/Los Angeles)
Epicentre
33.930° 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. 8,54214 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 ml13.1 km33.93° N, 117.19° W–Reviewed

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How big was it?

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

It released roughly the energy of 108 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 4.4× the energy of M0.6, and its waves are about 2.7× taller on a seismogram. Energy: 477 g of TNT vs 108 g of TNT.

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

Aftershocks and nearby activity

26 later earthquakes within 30 km; the largest was M1.5 14 h ago. 7 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
4.771.40
8.211.012
10.911.12
14.710.815
17.570.610
24.580.915
29.281.116
30.281.115
31.651.42
42.111.213
48.410.914
48.440.714
56.060.9-1
58.620.711
60.420.813
65.400.816
66.541.36
73.111.013
97.520.93
99.740.811
100.521.011
108.490.816
114.580.815
114.590.914
120.901.514
129.081.115
  1. 1.5Near Loma Linda, California, United States09-28 12:07
  2. 1.43 km ENE of El Cerrito Corona, California, United States09-23 16:00
  3. 1.45 km NNW of Lake Elsinore, California, United States09-24 18:53
  4. 1.3Near Fontana, California, United States09-26 05:46
  5. 1.28 km S of Beaumont, California, United States09-25 05:20
  6. 1.16 km S of Redlands, California, United States09-28 20:19
  7. 1.1Near Calimesa, California, United States09-24 16:30
  8. 1.1Near El Cerrito Corona, California, United States09-23 22:08
  9. 1.16 km S of Redlands, California, United States09-24 17:30
  10. 1.05 km WNW of Calimesa, California, United States09-26 12:20
  11. 1.07 km S of Banning, California, United States09-23 19:26
  12. 1.06 km S of Loma Linda, California, United States09-27 15:45
  13. 0.9Near Home Gardens, California, United States09-25 19:17
  14. 0.99 km NE of Cherry Valley, California, United States09-27 12:45
  15. 0.94 km NW of Cherry Valley, California, United States09-28 05:49
  16. 0.97 km S of Redlands, California, United States09-25 11:38
  17. 0.95 km WNW of Calimesa, California, United States09-24 11:49
  18. 0.8Near Loma Linda, California, United States09-25 23:39
  19. 0.89 km WSW of Beaumont, California, United States09-26 04:38
  20. 0.84 km NW of Cherry Valley, California, United States09-28 05:48
  21. 0.8Near Calimesa, California, United States09-24 01:56
  22. 0.8Near Loma Linda, California, United States09-27 23:43
  23. 0.86 km S of Loma Linda, California, United States09-27 14:58
  24. 0.76 km NE of Moreno Valley, California, United States09-25 21:51
  25. 0.77 km S of Redlands, California, United States09-25 11:40

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Reports on SeismoAtlas

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Event id ci41337575. First recorded here 28 Sept 2026, 17:32:11 UTC. Solutions: USGS · CI (usgs:ci41337575). Cite as: SeismoAtlas, “M0.6 earthquake 4 km ESE of Moreno Valley, California, United States”, https://seismoatlas.com/earthquake/ci41337575-m0-6-earthquake-4-km-ese-of-moreno-valley-california-united-states, data from USGS.

JSON: /api/v1/events/ci41337575. SeismoAtlas is not an official warning service.