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M1.1 earthquake 29 km SE of Valle Vista, California, United States

A magnitude 1.1 earthquake struck 29 km SE of Valle Vista, California, United States at 04:26 local time (11:26 UTC) on 27 Oct 2026, at a depth of 6 km, according to USGS.

revised from M1.3

Data: USGS · updated 2026-10-28 21:48 UTC · reviewed

Magnitude
1.1micro
local magnitude (Richter) (ml)
revised from 1.3
Depth
6.3 km
Status
Reviewed
Origin time
2026-10-27 11:26:26 UTC
Local: 27 Oct 2026, 04:26:26 (America/Los Angeles)
Epicentre
33.535° N, 116.709° 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
Valle VistaCalifornia, United States · pop. 14,57829 kmINot felt
East HemetCalifornia, United States · pop. 17,41831 kmINot felt
HemetCalifornia, United States · pop. 83,86134 kmINot felt
Cathedral CityCalifornia, United States · pop. 53,82635 kmINot felt
San JacintoCalifornia, United States · pop. 46,95136 kmINot felt
Palm SpringsCalifornia, United States · pop. 47,37136 kmINot felt
RiversideCalifornia, United States · pop. 317,26179 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,452100 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 Survey1.1 mlwas 1.36.3 km33.53° N, 116.71° 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 801 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.

M1.1 releases about 1.7× the energy of M1.0, and its waves are about 1.4× taller on a seismogram. Energy: 801 g of TNT vs 477 g of TNT.

Each square is the energy of one M1.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

183 later earthquakes within 30 km; the largest was M2.6 6 days ago. 102 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
1.710.512
6.710.615
21.490.512
23.210.16
29.620.512
30.901.016
45.721.113
45.770.113
45.830.16
46.761.213
46.880.96
49.811.15
52.510.26
52.780.913
53.020.66
53.050.512
53.520.514
53.690.16
55.540.66
56.860.14
61.950.15
63.170.516
63.920.26
64.14-0.06
64.371.011
69.890.614
71.580.516
71.620.414
72.110.16
72.140.76
74.820.46
89.580.515
89.890.26
90.370.918
91.421.47
91.53-0.17
93.320.26
94.280.311
95.540.814
100.060.26
101.950.16
101.95-0.25
102.180.516
106.000.414
106.620.66
106.980.516
108.290.44
111.480.66
113.030.417
114.350.612
118.84-0.26
119.250.313
119.520.57
119.940.55
124.221.86
124.520.56
128.080.26
129.480.87
130.790.26
130.930.616
141.770.76
142.251.211
142.85-0.06
142.860.16
143.990.914
150.080.913
152.520.36
152.781.110
153.301.014
159.820.612
160.581.113
161.410.16
162.190.112
164.030.06
167.610.66
167.610.211
169.790.16
170.050.46
170.770.06
171.400.712
171.930.313
172.010.07
172.020.515
178.98-0.37
179.990.512
190.150.813
192.871.014
193.310.46
195.980.36
197.031.416
198.820.36
202.721.013
203.00-0.26
204.620.814
205.080.813
206.210.712
209.120.16
209.710.510
213.730.57
214.570.36
216.440.54
224.510.85
224.850.512
226.120.76
230.020.36
231.001.06
232.980.66
235.302.67
235.321.17
236.960.16
237.770.27
239.320.413
239.671.37
240.440.37
242.100.26
244.330.66
244.680.35
245.930.712
246.510.47
252.98-0.17
254.490.913
256.330.612
262.891.811
264.380.715
274.590.27
278.470.27
279.440.412
279.930.74
281.370.46
281.370.16
281.930.712
282.320.56
294.330.713
296.081.16
297.190.713
297.191.014
299.430.510
307.160.66
310.670.913
310.890.210
314.261.213
315.160.613
315.170.713
315.940.514
318.681.06
318.750.76
320.480.416
320.490.813
326.380.26
329.260.411
330.780.716
330.780.61
332.620.94
333.780.26
334.090.613
334.550.811
335.070.315
336.510.617
337.790.27
343.830.612
343.990.812
345.240.36
345.621.413
345.670.712
348.600.66
354.180.35
357.520.36
364.200.813
367.610.44
369.730.26
370.140.916
374.311.312
374.321.212
374.640.717
374.730.514
375.220.16
377.090.16
380.101.56
385.190.96
386.310.54
389.550.44
390.050.37
398.040.86
  1. 2.641 km ENE of Valley Center, California, United States11-06 06:44
  2. 1.825 km SSW of La Quinta, California, United States11-07 10:20
  3. 1.822 km SW of La Quinta, California, United States11-01 15:39
  4. 1.541 km ENE of Valley Center, California, United States11-12 07:32
  5. 1.417 km ESE of Valle Vista, California, United States11-04 16:28
  6. 1.422 km SSE of Valle Vista, California, United States11-10 21:03
  7. 1.429 km SE of Valle Vista, California, United States10-31 06:51
  8. 1.322 km SSE of Valle Vista, California, United States11-12 01:45
  9. 1.341 km ENE of Valley Center, California, United States11-06 11:06
  10. 1.223 km SSE of Valle Vista, California, United States10-29 10:12
  11. 1.218 km ENE of Temecula, California, United States11-02 09:41
  12. 1.225 km SW of La Quinta, California, United States11-09 13:41
  13. 1.222 km SSE of Valle Vista, California, United States11-12 01:45
  14. 1.130 km SSE of Valle Vista, California, United States11-02 20:13
  15. 1.125 km SW of La Quinta, California, United States11-03 04:01
  16. 1.141 km SW of La Quinta, California, United States11-06 06:45
  17. 1.129 km SE of Valle Vista, California, United States10-29 13:14
  18. 1.122 km SW of La Quinta, California, United States11-08 19:31
  19. 1.123 km SE of Valle Vista, California, United States10-29 09:09
  20. 1.027 km SW of La Quinta, California, United States11-04 22:09
  21. 1.025 km SW of La Quinta, California, United States11-08 20:37
  22. 1.014 km SSE of Valle Vista, California, United States10-30 03:48
  23. 1.023 km SW of La Quinta, California, United States11-02 20:44
  24. 1.024 km SW of La Quinta, California, United States11-04 12:18
  25. 1.029 km SE of Valle Vista, California, United States11-09 18:07

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Reports on SeismoAtlas

No reports yet.

Event id ci41353471. First recorded here 27 Oct 2026, 11:28:54 UTC. Solutions: USGS · CI (usgs:ci41353471). Cite as: SeismoAtlas, “M1.1 earthquake 29 km SE of Valle Vista, California, United States”, https://seismoatlas.com/earthquake/ci41353471-m1-1-earthquake-29-km-se-of-valle-vista-california-united-states, data from USGS.

JSON: /api/v1/events/ci41353471. SeismoAtlas is not an official warning service.