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M0.2 earthquake 35 km ENE of Valley Center, California, United States

A magnitude 0.2 earthquake struck 35 km ENE of Valley Center, California, United States at 10:47 local time (17:47 UTC) on 26 Sept 2026, at a depth of 10 km, according to USGS.

revised from M0.3

Data: USGS · updated 2026-09-28 20:04 UTC · reviewed

Magnitude
0.2micro
local magnitude (Richter) (ml)
revised from 0.3
Depth
9.7 km
Status
Reviewed
Origin time
2026-09-26 17:47:26 UTC
Local: 26 Sept 2026, 10:47:26 (America/Los Angeles)
Epicentre
33.371° N, 116.699° 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
Valley CenterCalifornia, United States · pop. 9,27735 kmINot felt
RamonaCalifornia, United States · pop. 20,29240 kmINot felt
TemeculaCalifornia, United States · pop. 110,00344 kmINot felt
EscondidoCalifornia, United States · pop. 151,03846 kmINot felt
La QuintaCalifornia, United States · pop. 40,47648 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,45284 kmINot felt
Chula VistaCalifornia, United States · pop. 265,75789 kmINot felt
RiversideCalifornia, United States · pop. 317,26191 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 Survey0.2 mlwas 0.39.7 km33.37° N, 116.70° W–Reviewed · 1 revision

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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 31 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 10 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 15× the energy of M0.2, and its waves are about 6.2× taller on a seismogram. Energy: 477 g of TNT vs 31 g of TNT.

Each square is the energy of one M0.2. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

28 later earthquakes within 30 km; the largest was M2.3 1 day ago. 66 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.2

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
1.070.46
5.170.612
9.701.614
9.701.620
9.712.314
9.721.213
11.210.412
11.280.512
13.42-0.06
15.390.814
17.900.26
18.660.617
18.970.93
19.430.910
20.830.513
21.471.413
24.921.513
29.420.56
30.090.86
32.921.712
32.970.913
34.620.213
41.870.66
44.540.515
46.941.213
49.090.710
49.090.411
54.370.412
  1. 2.326 km SW of La Quinta, California, United States09-27 03:29
  2. 1.723 km SSE of Valle Vista, California, United States09-28 02:42
  3. 1.626 km SW of La Quinta, California, United States09-27 03:29
  4. 1.623 km SSW of La Quinta, California, United States09-27 03:29
  5. 1.525 km SW of La Quinta, California, United States09-27 18:42
  6. 1.424 km E of Temecula, California, United States09-27 15:15
  7. 1.225 km SW of La Quinta, California, United States09-27 03:30
  8. 1.225 km SW of La Quinta, California, United States09-28 16:43
  9. 0.928 km SSE of Valle Vista, California, United States09-27 12:45
  10. 0.923 km SSE of Valle Vista, California, United States09-28 02:45
  11. 0.934 km ENE of Valley Center, California, United States09-27 13:13
  12. 0.820 km SE of Valle Vista, California, United States09-27 09:10
  13. 0.829 km SE of Valle Vista, California, United States09-27 23:52
  14. 0.730 km SW of La Quinta, California, United States09-28 18:52
  15. 0.622 km SSE of Valle Vista, California, United States09-26 22:57
  16. 0.625 km ENE of Valley Center, California, United States09-27 12:26
  17. 0.629 km ENE of San Diego Country Estates, California, United States09-28 11:39
  18. 0.525 km SE of Valle Vista, California, United States09-27 05:04
  19. 0.529 km SW of Palm Desert, California, United States09-27 14:37
  20. 0.529 km SE of Valle Vista, California, United States09-27 23:12
  21. 0.521 km ENE of Valley Center, California, United States09-28 14:19
  22. 0.433 km SW of La Quinta, California, United States09-29 00:09
  23. 0.429 km SE of Valle Vista, California, United States09-26 18:51
  24. 0.422 km SSE of Valle Vista, California, United States09-27 05:00
  25. 0.430 km SW of La Quinta, California, United States09-28 18:53

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Reports on SeismoAtlas

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Event id ci41339551. First recorded here 28 Sept 2026, 17:32:09 UTC. Solutions: USGS · CI (usgs:ci41339551). Cite as: SeismoAtlas, “M0.2 earthquake 35 km ENE of Valley Center, California, United States”, https://seismoatlas.com/earthquake/ci41339551-m0-2-earthquake-35-km-ene-of-valley-center-california-united-states, data from USGS.

JSON: /api/v1/events/ci41339551. SeismoAtlas is not an official warning service.