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M0.7 earthquake 29 km NE of San Diego Country Estates, California, United States

A magnitude 0.7 earthquake struck 29 km NE of San Diego Country Estates, California, United States at 21:32 local time (04:32 UTC) on 22 Sept 2026, at a depth of 16 km, according to USGS. The solution is preliminary and may be revised.

Data: USGS · updated 2026-09-23 04:35 UTC · automatic solution

Magnitude
0.7micro
local magnitude (Richter) (ml)
Depth
16.4 km
Status
Automatic
Origin time
2026-09-23 04:32:02 UTC
Local: 22 Sept 2026, 21:32:02 (America/Los Angeles)
Epicentre
33.162° N, 116.528° 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. 20,29235 kmINot felt
LakesideCalifornia, United States · pop. 20,64850 kmINot felt
EscondidoCalifornia, United States · pop. 151,03853 kmINot felt
Winter GardensCalifornia, United States · pop. 20,63153 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,45277 kmINot felt
Chula VistaCalifornia, United States · pop. 265,75778 kmINot felt
TijuanaBaja California, Mexico · pop. 1,922,52386 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 Survey0.7 ml16.4 km33.16° N, 116.53° W–Automatic

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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 188 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 16 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 2.5× the energy of M0.7, and its waves are about 1.9× taller on a seismogram. Energy: 477 g of TNT vs 188 g of TNT.

Each square is the energy of one M0.7. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

29 later earthquakes within 30 km; the largest was M2.0 4 days ago. 5 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.7

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.830.86
10.651.513
11.640.59
16.980.79
25.130.79
25.600.810
26.831.08
27.171.611
27.210.79
27.250.69
27.322.010
37.880.79
38.420.67
53.091.19
62.071.510
68.890.411
70.480.78
72.930.66
74.420.95
74.721.213
81.280.67
85.260.210
101.950.515
104.690.910
108.300.611
127.130.66
127.550.710
129.790.515
133.380.811
  1. 2.026 km SW of Oasis, California, United States09-24 07:51
  2. 1.626 km SW of Oasis, California, United States09-24 07:42
  3. 1.538 km E of San Diego Country Estates, California, United States09-25 18:36
  4. 1.530 km WSW of Oasis, California, United States09-23 15:10
  5. 1.219 km ENE of Alpine, California, United States09-26 07:15
  6. 1.134 km E of San Diego Country Estates, California, United States09-25 09:37
  7. 1.044 km E of San Diego Country Estates, California, United States09-24 07:22
  8. 0.941 km ENE of Valley Center, California, United States09-26 06:57
  9. 0.934 km ENE of Valley Center, California, United States09-27 13:13
  10. 0.828 km WSW of Oasis, California, United States09-23 05:21
  11. 0.826 km SW of Oasis, California, United States09-28 17:54
  12. 0.826 km SW of Oasis, California, United States09-24 06:08
  13. 0.726 km SW of Oasis, California, United States09-24 07:44
  14. 0.730 km WSW of Oasis, California, United States09-24 18:24
  15. 0.726 km SW of Oasis, California, United States09-24 05:39
  16. 0.730 km WSW of Oasis, California, United States09-28 12:04
  17. 0.725 km SW of Oasis, California, United States09-23 21:31
  18. 0.745 km E of San Diego Country Estates, California, United States09-26 03:01
  19. 0.646 km E of San Diego Country Estates, California, United States09-26 13:48
  20. 0.638 km ENE of San Diego Country Estates, California, United States09-27 16:50
  21. 0.625 km SW of Oasis, California, United States09-24 07:47
  22. 0.629 km ENE of San Diego Country Estates, California, United States09-24 18:57
  23. 0.626 km NE of San Diego Country Estates, California, United States09-26 05:28
  24. 0.629 km ENE of San Diego Country Estates, California, United States09-28 11:39
  25. 0.520 km NE of San Diego Country Estates, California, United States09-27 10:29

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Reports on SeismoAtlas

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Event id ci41337423. First recorded here 28 Sept 2026, 17:32:11 UTC. Solutions: USGS · CI (usgs:ci41337423). Cite as: SeismoAtlas, “M0.7 earthquake 29 km NE of San Diego Country Estates, California, United States”, https://seismoatlas.com/earthquake/ci41337423-m0-7-earthquake-29-km-ne-of-san-diego-country-estates-california-united-states, data from USGS.

JSON: /api/v1/events/ci41337423. SeismoAtlas is not an official warning service.