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M0.8 earthquake 23 km NNE of San Diego Country Estates, California, United States

A magnitude 0.8 earthquake struck 23 km NNE of San Diego Country Estates, California, United States at 02:47 local time (10:47 UTC) on 4 Nov 2026, at a depth of 9 km, according to USGS.

revised from M1.1

Data: USGS · updated 2026-11-04 14:34 UTC · reviewed

Magnitude
0.8micro
local magnitude (Richter) (ml)
revised from 1.1
Depth
8.6 km
Status
Reviewed
Origin time
2026-11-04 10:47:28 UTC
Local: 4 Nov 2026, 02:47:28 (America/Los Angeles)
Epicentre
33.207° N, 116.704° 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
San Diego Country EstatesCalifornia, United States · pop. 10,10923 kmINot felt
RamonaCalifornia, United States · pop. 20,29224 kmINot felt
EscondidoCalifornia, United States · pop. 151,03837 kmINot felt
PowayCalifornia, United States · pop. 50,15742 kmINot felt
LakesideCalifornia, United States · pop. 20,64844 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,45269 kmINot felt
Chula VistaCalifornia, United States · pop. 265,75772 kmINot felt
TijuanaBaja California, Mexico · pop. 1,922,52383 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 Survey0.8 mlwas 1.18.6 km33.21° N, 116.70° 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 256 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 9 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 1.9× the energy of M0.8, and its waves are about 1.5× taller on a seismogram. Energy: 477 g of TNT vs 256 g of TNT.

Each square is the energy of one M0.8. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

30 later earthquakes within 30 km; the largest was M2.6 6 days ago. 16 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.8

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
17.180.613
43.942.67
43.971.17
46.420.27
47.960.411
48.311.37
49.090.37
52.980.66
53.650.914
55.150.47
83.240.27
87.911.39
92.520.910
93.030.89
94.511.09
108.080.510
123.990.65
129.140.813
134.740.411
151.061.011
152.520.411
154.601.317
160.460.710
179.971.42
187.580.412
188.230.712
188.751.56
188.940.617
194.960.54
198.200.44
  1. 2.641 km ENE of Valley Center, California, United States11-06 06:44
  2. 1.541 km ENE of Valley Center, California, United States11-12 07:32
  3. 1.439 km WSW of Oasis, California, United States11-11 22:45
  4. 1.316 km NNE of Ramona, California, United States11-10 21:23
  5. 1.330 km E of San Diego Country Estates, California, United States11-08 02:42
  6. 1.341 km ENE of Valley Center, California, United States11-06 11:06
  7. 1.141 km SW of La Quinta, California, United States11-06 06:45
  8. 1.030 km E of San Diego Country Estates, California, United States11-08 09:17
  9. 1.036 km ENE of San Diego Country Estates, California, United States11-10 17:50
  10. 0.940 km SW of Oasis, California, United States11-06 16:26
  11. 0.920 km ENE of San Diego Country Estates, California, United States11-08 07:18
  12. 0.830 km E of San Diego Country Estates, California, United States11-08 07:49
  13. 0.835 km ENE of Valley Center, California, United States11-09 19:56
  14. 0.723 km NNE of Ramona, California, United States11-11 03:15
  15. 0.726 km ENE of San Diego Country Estates, California, United States11-12 07:01
  16. 0.623 km NNE of Ramona, California, United States11-05 03:58
  17. 0.641 km SW of La Quinta, California, United States11-06 15:46
  18. 0.637 km SW of Oasis, California, United States11-09 14:47
  19. 0.624 km NE of San Diego Country Estates, California, United States11-12 07:43
  20. 0.539 km SW of La Quinta, California, United States11-08 22:52
  21. 0.539 km SSE of Valle Vista, California, United States11-12 13:45
  22. 0.428 km NNE of San Diego Country Estates, California, United States11-12 06:22
  23. 0.439 km SSE of Valle Vista, California, United States11-12 16:59
  24. 0.419 km NNE of San Diego Country Estates, California, United States11-06 10:45
  25. 0.428 km NNE of San Diego Country Estates, California, United States11-10 19:18

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Reports on SeismoAtlas

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Event id ci41572400. First recorded here 4 Nov 2026, 10:50:03 UTC. Solutions: USGS · CI (usgs:ci41572400). Cite as: SeismoAtlas, “M0.8 earthquake 23 km NNE of San Diego Country Estates, California, United States”, https://seismoatlas.com/earthquake/ci41572400-m0-8-earthquake-23-km-nne-of-san-diego-country-estates-california-united-states, data from USGS.

JSON: /api/v1/events/ci41572400. SeismoAtlas is not an official warning service.