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M0.6 earthquake 23 km NNE of Ramona, California, United States

A magnitude 0.6 earthquake struck 23 km NNE of Ramona, California, United States at 19:58 local time (03:58 UTC) on 4 Nov 2026, at a depth of 13 km, according to USGS.

Data: USGS · updated 2026-11-05 14:49 UTC · reviewed

Magnitude
0.6micro
local magnitude (Richter) (ml)
Depth
12.6 km
Status
Reviewed
Origin time
2026-11-05 03:58:00 UTC
Local: 4 Nov 2026, 19:58:00 (America/Los Angeles)
Epicentre
33.219° N, 116.744° 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
RamonaCalifornia, United States · pop. 20,29223 kmINot felt
San Diego Country EstatesCalifornia, United States · pop. 10,10924 kmINot felt
EscondidoCalifornia, United States · pop. 151,03834 kmINot felt
PowayCalifornia, United States · pop. 50,15740 kmINot felt
San MarcosCalifornia, United States · pop. 92,93141 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,45268 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 Survey0.6 ml12.6 km33.22° N, 116.74° W–Reviewed · 1 revision

How big was it?

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

It released roughly the energy of 133 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 3.6× the energy of M0.6, and its waves are about 2.3× taller on a seismogram. Energy: 477 g of TNT vs 133 g of TNT.

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

Aftershocks and nearby activity

24 later earthquakes within 30 km; the largest was M2.6 6 days ago. 9 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
26.772.67
26.791.17
29.250.27
30.790.411
31.141.37
31.920.37
35.810.66
37.980.47
66.060.27
75.340.910
90.900.510
111.970.813
117.560.411
133.881.011
135.340.411
137.421.317
143.290.710
162.791.42
170.410.412
171.050.712
171.571.56
171.760.617
177.780.54
181.020.44
  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. 1.341 km ENE of Valley Center, California, United States11-06 11:06
  6. 1.141 km SW of La Quinta, California, United States11-06 06:45
  7. 1.036 km ENE of San Diego Country Estates, California, United States11-10 17:50
  8. 0.920 km ENE of San Diego Country Estates, California, United States11-08 07:18
  9. 0.835 km ENE of Valley Center, California, United States11-09 19:56
  10. 0.723 km NNE of Ramona, California, United States11-11 03:15
  11. 0.726 km ENE of San Diego Country Estates, California, United States11-12 07:01
  12. 0.641 km SW of La Quinta, California, United States11-06 15:46
  13. 0.624 km NE of San Diego Country Estates, California, United States11-12 07:43
  14. 0.539 km SW of La Quinta, California, United States11-08 22:52
  15. 0.539 km SSE of Valle Vista, California, United States11-12 13:45
  16. 0.428 km NNE of San Diego Country Estates, California, United States11-12 06:22
  17. 0.439 km SSE of Valle Vista, California, United States11-12 16:59
  18. 0.419 km NNE of San Diego Country Estates, California, United States11-06 10:45
  19. 0.428 km NNE of San Diego Country Estates, California, United States11-10 19:18
  20. 0.436 km ENE of San Diego Country Estates, California, United States11-10 01:31
  21. 0.441 km SW of La Quinta, California, United States11-06 17:56
  22. 0.341 km SW of La Quinta, California, United States11-06 11:53
  23. 0.241 km SW of La Quinta, California, United States11-06 09:12
  24. 0.241 km SW of La Quinta, California, United States11-07 22:01

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Reports on SeismoAtlas

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Event id ci41358567. First recorded here 5 Nov 2026, 04:02:58 UTC. Solutions: USGS · CI (usgs:ci41358567). Cite as: SeismoAtlas, “M0.6 earthquake 23 km NNE of Ramona, California, United States”, https://seismoatlas.com/earthquake/ci41358567-m0-6-earthquake-23-km-nne-of-ramona-california-united-states, data from USGS.

JSON: /api/v1/events/ci41358567. SeismoAtlas is not an official warning service.