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SeismoAtlas

M2.2 earthquake 16 km ENE of Cloverdale, California, United States

A magnitude 2.2 earthquake struck 16 km ENE of Cloverdale, California, United States at 03:00 local time (10:00 UTC) on 3 Oct 2026, at a depth of 2 km, according to USGS. The solution is preliminary and may be revised.

Data: USGS · updated 2026-10-03 10:01 UTC · automatic solution

Magnitude
2.2micro
duration magnitude (md)
Depth
2.3 km
Status
Automatic
Origin time
2026-10-03 10:00:17 UTC
Local: 3 Oct 2026, 03:00:17 (America/Los Angeles)
Epicentre
38.859° N, 122.849° W

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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
CloverdaleCalifornia, United States · pop. 8,81116 kmINot felt
ClearlakeCalifornia, United States · pop. 15,18222 kmINot felt
WindsorCalifornia, United States · pop. 27,46434 kmINot felt
Santa RosaCalifornia, United States · pop. 178,12748 kmINot felt
Rohnert ParkCalifornia, United States · pop. 42,40759 kmINot felt
Agua CalienteCalifornia, United States · pop. 27,09068 kmINot felt
SacramentoCalifornia, United States · pop. 524,943122 kmINot felt
San FranciscoCalifornia, United States · pop. 827,526127 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. Likely felt out to about 6 km.

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 · NC.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · NCheadlineNorthern California Seismic System via U.S. Geological Survey2.2 md2.3 km38.86° N, 122.85° 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 26 kg 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 2 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.2 releases about 28× the energy of M1.2, and its waves are about 9.1× taller on a seismogram. Energy: 26 kg of TNT vs 951 g of TNT.

Each square is the energy of one M1.2. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

273 later earthquakes within 30 km; the largest was M2.3 3 days ago. 242 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.2

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.002.02
0.571.12
0.590.82
0.601.32
0.801.02
0.981.12
2.550.82
3.162.02
3.331.12
3.840.82
4.690.6-1
4.861.32
4.930.83
5.731.13
6.071.13
6.541.13
7.410.61
7.581.12
10.340.53
10.801.83
11.211.36
11.311.13
11.461.56
12.251.22
13.310.72
15.171.12
15.230.24
15.530.72
16.761.12
16.821.03
18.241.12
19.230.83
19.771.10
19.800.72
20.910.72
21.181.61
23.490.82
23.641.12
25.440.82
26.260.73
26.950.22
27.090.82
27.911.02
31.951.53
32.090.83
32.990.87
33.141.12
33.880.9-1
33.930.32
34.780.84
35.430.73
35.900.82
36.491.02
36.611.03
38.341.02
38.740.72
38.880.72
40.460.42
41.180.82
42.030.72
42.720.82
43.360.710
45.100.83
45.651.32
45.741.02
47.271.02
48.251.62
48.340.72
49.321.03
49.751.64
52.850.31
52.990.73
53.480.22
54.801.42
54.960.71
55.271.03
56.080.72
56.081.12
64.700.72
64.901.10
65.531.12
66.440.81
66.950.92
67.360.72
69.030.83
69.540.83
69.701.20
70.091.01
71.220.81
71.361.11
71.591.01
73.391.33
74.250.82
75.340.32
77.501.12
79.420.33
79.771.52
80.371.43
80.491.03
80.630.92
81.691.14
83.751.21
85.380.72
86.391.31
86.470.73
86.680.73
87.470.72
88.401.32
89.401.12
89.630.53
90.811.42
90.820.73
91.210.22
91.361.02
91.822.09
91.910.74
92.770.71
92.770.62
92.980.42
93.080.83
93.271.12
93.661.32
94.721.91
94.750.80
96.160.60
96.881.11
98.201.12
99.941.04
99.970.73
101.441.12
101.521.12
102.600.72
104.330.92
104.370.72
104.861.12
106.871.11
107.481.13
107.680.52
109.220.81
109.291.33
110.910.82
111.641.11
112.951.33
114.481.7-1
114.561.23
116.390.52
117.801.13
118.011.03
120.481.31
124.331.33
124.440.83
124.961.26
125.061.43
127.900.72
127.970.94
129.100.73
129.441.13
131.660.80
132.730.83
132.960.90
134.070.92
134.072.33
134.291.82
134.320.83
135.021.12
135.040.83
135.841.02
136.280.73
136.412.03
137.311.33
137.351.12
138.941.53
140.650.21
140.791.11
141.150.31
141.931.01
142.050.92
142.150.72
142.271.12
143.280.42
143.540.82
146.651.11
146.671.30
146.901.01
148.661.32
150.800.42
151.140.92
152.871.33
154.090.82
154.610.93
155.380.72
155.410.73
155.631.02
155.971.12
156.781.13
156.811.12
156.830.82
157.390.72
159.150.80
159.670.42
161.290.82
163.401.02
164.220.53
164.291.13
164.351.12
165.480.52
166.970.53
167.950.82
168.010.73
168.581.12
169.740.83
171.461.12
171.491.12
171.510.82
172.651.73
172.660.73
174.020.92
174.390.43
177.530.312
178.721.81
179.121.82
180.180.72
180.950.83
181.340.82
185.121.61
186.381.82
186.880.72
186.890.87
187.321.02
187.481.13
190.340.72
192.211.12
192.680.72
193.620.72
194.171.02
194.201.10
195.071.11
195.171.01
195.820.92
196.101.72
196.120.92
196.231.52
196.260.22
198.230.82
198.541.42
201.501.01
201.510.43
203.550.72
203.670.82
203.930.83
204.051.12
204.551.11
204.670.92
205.321.22
206.090.22
206.350.73
206.850.82
207.721.12
207.930.83
208.840.63
209.211.02
209.551.02
211.911.11
211.911.22
212.630.72
213.550.82
214.750.82
215.480.72
217.980.82
219.601.93
219.620.93
219.710.83
220.211.12
  1. 2.318 km E of Cloverdale, California, United States10-09 00:04
  2. 2.016 km E of Cloverdale, California, United States10-07 05:49
  3. 2.016 km ENE of Cloverdale, California, United States10-03 10:00
  4. 2.019 km E of Cloverdale, California, United States10-09 02:24
  5. 2.018 km E of Cloverdale, California, United States10-03 13:09
  6. 1.920 km E of Cloverdale, California, United States10-12 13:36
  7. 1.916 km WSW of Hidden Valley Lake, California, United States10-07 08:43
  8. 1.818 km E of Cloverdale, California, United States10-09 00:17
  9. 1.820 km E of Cloverdale, California, United States10-03 20:48
  10. 1.816 km WSW of Hidden Valley Lake, California, United States10-10 21:07
  11. 1.817 km W of Hidden Valley Lake, California, United States10-10 20:43
  12. 1.818 km W of Hidden Valley Lake, California, United States10-11 04:23
  13. 1.719 km E of Cloverdale, California, United States10-10 14:39
  14. 1.718 km E of Cloverdale, California, United States10-11 14:06
  15. 1.718 km E of Cloverdale, California, United States10-08 04:28
  16. 1.619 km SW of Clearlake, California, United States10-05 10:15
  17. 1.618 km W of Hidden Valley Lake, California, United States10-11 03:07
  18. 1.618 km W of Hidden Valley Lake, California, United States10-05 11:45
  19. 1.618 km ENE of Cloverdale, California, United States10-04 07:11
  20. 1.519 km W of Hidden Valley Lake, California, United States10-04 17:57
  21. 1.518 km E of Cloverdale, California, United States10-11 14:14
  22. 1.520 km SW of Clearlake, California, United States10-06 17:46
  23. 1.518 km E of Cloverdale, California, United States10-09 04:56
  24. 1.58 km ESE of Cloverdale, California, United States10-03 21:27
  25. 1.420 km W of Hidden Valley Lake, California, United States10-05 16:48

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Event id nc75443351. First recorded here 3 Oct 2026, 10:03:07 UTC. Solutions: USGS · NC (usgs:nc75443351). Cite as: SeismoAtlas, “M2.2 earthquake 16 km ENE of Cloverdale, California, United States”, https://seismoatlas.com/earthquake/nc75443351-m2-2-earthquake-16-km-ene-of-cloverdale-california-united-states, data from USGS.

JSON: /api/v1/events/nc75443351. SeismoAtlas is not an official warning service.