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M0.9 earthquake 29 km ENE of San Diego Country Estates, California, United States

A magnitude 0.9 earthquake struck 29 km ENE of San Diego Country Estates, California, United States at 15:40 local time (22:40 UTC) on 29 Oct 2026, at a depth of 7 km, according to USGS. The solution is preliminary and may be revised.

revised from M1.0

Data: USGS · updated 2026-10-29 22:43 UTC · automatic solution

Magnitude
0.9micro
local magnitude (Richter) (ml)
revised from 1.0
Depth
6.9 km
Status
Automatic
Origin time
2026-10-29 22:40:09 UTC
Local: 29 Oct 2026, 15:40:09 (America/Los Angeles)
Epicentre
33.093° N, 116.483° 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. 10,10929 kmINot felt
RamonaCalifornia, United States · pop. 20,29237 kmINot felt
LakesideCalifornia, United States · pop. 20,64848 kmINot felt
Winter GardensCalifornia, United States · pop. 20,63151 kmINot felt
SanteeCalifornia, United States · pop. 57,78753 kmINot felt
Chula VistaCalifornia, United States · pop. 265,75775 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,45276 kmINot felt
TijuanaBaja California, Mexico · pop. 1,922,52382 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.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · CIheadlineSouthern California Seismic Network via U.S. Geological Survey0.9 mlwas 1.06.9 km33.09° N, 116.48° W–Automatic · 1 revision

How big was it?

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

It released roughly the energy of 315 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 7 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 1.5× the energy of M0.9, and its waves are about 1.3× taller on a seismogram. Energy: 477 g of TNT vs 315 g of TNT.

Each square is the energy of one M0.9. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

41 later earthquakes within 30 km; the largest was M2.4 8 days ago. 28 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
2.491.216
6.930.412
7.230.67
35.071.97
37.060.29
47.040.812
47.211.110
58.560.717
84.511.28
91.990.89
92.231.19
93.610.89
102.970.910
105.141.411
108.550.214
119.230.713
131.412.414
132.120.89
149.300.613
172.661.111
180.090.411
185.780.914
200.450.913
206.381.114
220.041.39
224.640.910
225.150.89
226.631.09
256.110.65
266.860.411
270.041.212
283.181.011
284.640.411
286.721.317
292.590.710
312.091.42
312.720.910
319.710.412
319.911.09
320.350.712
321.060.617
  1. 2.418 km E of Alpine, California, United States11-04 10:04
  2. 1.945 km E of San Diego Country Estates, California, United States10-31 09:44
  3. 1.429 km E of San Diego Country Estates, California, United States11-03 07:48
  4. 1.439 km WSW of Oasis, California, United States11-11 22:45
  5. 1.316 km NNE of Ramona, California, United States11-10 21:23
  6. 1.330 km E of San Diego Country Estates, California, United States11-08 02:42
  7. 1.229 km SW of Oasis, California, United States11-10 04:42
  8. 1.232 km E of San Diego Country Estates, California, United States11-02 11:10
  9. 1.220 km ENE of Alpine, California, United States10-30 01:09
  10. 1.139 km ENE of San Diego Country Estates, California, United States10-31 21:52
  11. 1.128 km SSW of Oasis, California, United States11-06 03:19
  12. 1.132 km E of San Diego Country Estates, California, United States11-07 13:03
  13. 1.134 km E of San Diego Country Estates, California, United States11-02 18:54
  14. 1.017 km ENE of Alpine, California, United States11-12 06:34
  15. 1.030 km E of San Diego Country Estates, California, United States11-08 09:17
  16. 1.036 km ENE of San Diego Country Estates, California, United States11-10 17:50
  17. 0.934 km E of San Diego Country Estates, California, United States11-07 07:06
  18. 0.938 km SSW of Oasis, California, United States11-03 05:38
  19. 0.940 km SW of Oasis, California, United States11-06 16:26
  20. 0.930 km SW of Oasis, California, United States11-11 23:23
  21. 0.920 km ENE of San Diego Country Estates, California, United States11-08 07:18
  22. 0.830 km E of San Diego Country Estates, California, United States11-08 07:49
  23. 0.823 km NNE of San Diego Country Estates, California, United States11-04 10:47
  24. 0.834 km E of San Diego Country Estates, California, United States11-02 18:39
  25. 0.835 km E of San Diego Country Estates, California, United States11-02 20:16

Did you feel it?

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

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

Event id ci41569152. First recorded here 29 Oct 2026, 22:43:24 UTC. Solutions: USGS · CI (usgs:ci41569152). Cite as: SeismoAtlas, “M0.9 earthquake 29 km ENE of San Diego Country Estates, California, United States”, https://seismoatlas.com/earthquake/ci41569152-m0-9-earthquake-29-km-ene-of-san-diego-country-estates-california-united-states, data from USGS.

JSON: /api/v1/events/ci41569152. SeismoAtlas is not an official warning service.