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M0.8 earthquake 28 km WSW of Oasis, California, United States

A magnitude 0.8 earthquake struck 28 km WSW of Oasis, California, United States at 22:21 local time (05:21 UTC) on 22 Sept 2026, at a depth of 6 km, according to USGS.

Data: USGS · updated 2026-09-23 13:06 UTC · reviewed

Magnitude
0.8micro
local magnitude (Richter) (ml)
Depth
5.8 km
Status
Reviewed
Origin time
2026-09-23 05:21:48 UTC
Local: 22 Sept 2026, 22:21:48 (America/Los Angeles)
Epicentre
33.386° N, 116.379° 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
OasisCalifornia, United States · pop. 6,89028 kmINot felt
La QuintaCalifornia, United States · pop. 40,47631 kmINot felt
Palm DesertCalifornia, United States · pop. 51,86937 kmINot felt
CoachellaCalifornia, United States · pop. 44,63538 kmINot felt
IndioCalifornia, United States · pop. 87,53340 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,452104 kmINot felt
Chula VistaCalifornia, United States · pop. 265,757106 kmINot felt
RiversideCalifornia, United States · pop. 317,261113 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 ml5.8 km33.39° N, 116.38° W–Reviewed

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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 284 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 6 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 1.7× the energy of M0.8, and its waves are about 1.4× taller on a seismogram. Energy: 477 g of TNT vs 284 g of TNT.

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

Aftershocks and nearby activity

41 later earthquakes within 30 km; the largest was M2.3 1 day ago. 10 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.8

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.850.86
1.300.17
2.701.513
3.871.58
9.821.513
10.810.59
14.150.612
16.160.79
19.900.714
24.300.79
24.770.810
26.341.611
26.380.79
26.420.69
26.502.010
30.590.412
33.790.96
37.050.79
44.420.811
68.060.411
73.600.95
76.380.37
79.98-0.06
84.430.210
94.131.614
94.131.620
94.132.314
94.151.213
105.260.513
107.470.611
109.351.513
118.011.211
121.810.62
126.300.66
126.720.710
131.361.213
131.750.611
131.750.313
132.550.811
133.520.710
133.520.411
  1. 2.326 km SW of La Quinta, California, United States09-27 03:29
  2. 2.026 km SW of Oasis, California, United States09-24 07:51
  3. 1.626 km SW of Oasis, California, United States09-24 07:42
  4. 1.626 km SW of La Quinta, California, United States09-27 03:29
  5. 1.623 km SSW of La Quinta, California, United States09-27 03:29
  6. 1.536 km SW of La Quinta, California, United States09-23 09:14
  7. 1.530 km WSW of Oasis, California, United States09-23 15:10
  8. 1.525 km SW of La Quinta, California, United States09-27 18:42
  9. 1.526 km SW of La Quinta, California, United States09-23 08:03
  10. 1.225 km SW of La Quinta, California, United States09-27 03:30
  11. 1.225 km WSW of Oasis, California, United States09-28 03:22
  12. 1.225 km SW of La Quinta, California, United States09-28 16:43
  13. 0.941 km ENE of Valley Center, California, United States09-26 06:57
  14. 0.925 km SW of La Quinta, California, United States09-24 15:09
  15. 0.825 km SW of La Quinta, California, United States09-23 06:12
  16. 0.826 km SW of Oasis, California, United States09-28 17:54
  17. 0.826 km WSW of Oasis, California, United States09-25 01:46
  18. 0.826 km SW of Oasis, California, United States09-24 06:08
  19. 0.725 km SW of La Quinta, California, United States09-24 01:15
  20. 0.726 km SW of Oasis, California, United States09-24 07:44
  21. 0.730 km WSW of Oasis, California, United States09-24 18:24
  22. 0.726 km SW of Oasis, California, United States09-24 05:39
  23. 0.730 km WSW of Oasis, California, United States09-28 12:04
  24. 0.725 km SW of Oasis, California, United States09-23 21:31
  25. 0.730 km SW of La Quinta, California, United States09-28 18:52

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Event id ci41337455. First recorded here 28 Sept 2026, 17:32:11 UTC. Solutions: USGS · CI (usgs:ci41337455). Cite as: SeismoAtlas, “M0.8 earthquake 28 km WSW of Oasis, California, United States”, https://seismoatlas.com/earthquake/ci41337455-m0-8-earthquake-28-km-wsw-of-oasis-california-united-states, data from USGS.

JSON: /api/v1/events/ci41337455. SeismoAtlas is not an official warning service.