M1.7 earthquake 9km WNW of Cobb, CA

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Dec 26, 2020, 6:03 PM PST

UTC

2020-12-27 02:03:14 UTC

Depth

2.3 km (1.4 mi), shallow

Epicenter

38.839° N, 122.822° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.19

Depth from

From location

Station coverage gap

62°

Stations used

47

• Cobb, CaliforniaPopulation 1,778. Forecast9 kmWNW
• Clearlake, CaliforniaPopulation 15,182. Forecast21 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast45 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast671 kmNW

After

1. 1.66km NNW of The Geysers, CASat, Dec 26, 7:38 PM PST · 2108 days ago · 1 km deep · 4 km away
2. 2.211km ESE of Willits, CASun, Dec 27, 6:06 AM PST · 2108 days ago · 7 km deep · 69 km away
3. 1.810km ESE of Willits, CASun, Dec 27, 11:33 AM PST · 2107 days ago · 7 km deep · 69 km away
4. 1.94km NNW of The Geysers, CATue, Dec 29, 2:03 PM PST · 2105 days ago · 0 km deep · 5 km away
5. 2.31km E of The Geysers, CATue, Dec 29, 3:35 PM PST · 2105 days ago · 0 km deep · 10 km away
6. 2.72km NW of The Geysers, CATue, Dec 29, 4:14 PM PST · 2105 days ago · 1 km deep · 7 km away · felt by 5
7. 3.69km WNW of Cobb, CAWed, Dec 30, 8:22 PM PST · 2104 days ago · 2 km deep · 0 km away · felt by 219
8. 1.59km NW of The Geysers, CAWed, Dec 30, 8:23 PM PST · 2104 days ago · 2 km deep · 1 km away
9. 1.89km WNW of Cobb, CAWed, Dec 30, 8:31 PM PST · 2104 days ago · 2 km deep · 0 km away
10. 1.69km NW of The Geysers, CAWed, Dec 30, 8:31 PM PST · 2104 days ago · 1 km deep · 1 km away
11. 1.68km NW of The Geysers, CAThu, Dec 31, 3:05 PM PST · 2103 days ago · 2 km deep · 1 km away
12. 1.710km ESE of Redwood Valley, CAThu, Dec 31, 8:33 PM PST · 2103 days ago · 7 km deep · 50 km away
13. 1.68km WNW of Cobb, CAFri, Jan 1, 4:22 AM PST · 2103 days ago · 1 km deep · 1 km away
14. 1.83km WNW of Cobb, CAFri, Jan 1, 10:01 AM PST · 2102 days ago · 0 km deep · 6 km away
15. 1.610km ESE of Willits, CAFri, Jan 1, 11:12 AM PST · 2102 days ago · 6 km deep · 69 km away
16. 1.78km WSW of Upper Lake, CAFri, Jan 1, 9:32 PM PST · 2102 days ago · 9 km deep · 35 km away · felt by 1
17. 2.12km E of The Geysers, CASat, Jan 2, 3:23 AM PST · 2102 days ago · 1 km deep · 11 km away · felt by 1
18. 1.73km NE of The Geysers, CASat, Jan 2, 11:44 PM PST · 2101 days ago · 0 km deep · 9 km away
19. 1.63km S of Cobb, CAMon, Jan 4, 2:00 PM PST · 2099 days ago · 2 km deep · 9 km away
20. 2.66km WSW of Glen Ellen, CAMon, Jan 4, 4:57 PM PST · 2099 days ago · 7 km deep · 59 km away · felt by 16
21. 2.26km WSW of Glen Ellen, CAMon, Jan 4, 5:26 PM PST · 2099 days ago · 7 km deep · 59 km away · felt by 1
22. 2.38km NNE of Healdsburg, CAMon, Jan 4, 11:20 PM PST · 2099 days ago · 7 km deep · 18 km away · felt by 7
23. 1.710km SE of Willits, CATue, Jan 5, 3:58 AM PST · 2099 days ago · 5 km deep · 69 km away
24. 1.68km NW of The Geysers, CATue, Jan 5, 12:43 PM PST · 2098 days ago · 2 km deep · 1 km away · felt by 9
25. 1.95km W of Cobb, CATue, Jan 5, 1:40 PM PST · 2098 days ago · 1 km deep · 4 km away · felt by 2
26. 1.68km W of Cobb, CAWed, Jan 6, 7:28 PM PST · 2097 days ago · 2 km deep · 1 km away
27. 1.810km ESE of Willits, CAWed, Jan 6, 8:26 PM PST · 2097 days ago · 7 km deep · 69 km away
28. 1.74km S of Redwood Valley, CAFri, Jan 8, 4:18 AM PST · 2096 days ago · 6 km deep · 54 km away
29. 1.61km NW of The Geysers, CAFri, Jan 8, 10:37 PM PST · 2095 days ago · 2 km deep · 8 km away
30. 2.012km SE of Laytonville, CASun, Jan 10, 3:31 PM PST · 2093 days ago · 7 km deep · 98 km away
31. 1.63km NE of The Geysers, CAMon, Jan 11, 2:41 AM PST · 2093 days ago · 0 km deep · 9 km away
32. 1.75km WNW of Cobb, CAMon, Jan 11, 3:07 AM PST · 2093 days ago · 2 km deep · 4 km away
33. 1.95km S of Boonville, CAMon, Jan 11, 6:45 PM PST · 2092 days ago · 0 km deep · 49 km away
34. 2.214km W of Lakeport, CATue, Jan 12, 1:02 PM PST · 2091 days ago · 2 km deep · 30 km away · felt by 1
35. 1.914km E of Yountville, CATue, Jan 12, 6:01 PM PST · 2091 days ago · 10 km deep · 72 km away · felt by 1
36. 1.74km SSW of Anderson Springs, CAWed, Jan 13, 8:50 AM PST · 2090 days ago · 2 km deep · 14 km away
37. 1.67km W of Cobb, CAWed, Jan 13, 11:53 AM PST · 2090 days ago · 2 km deep · 2 km away
38. 1.63km SSW of Anderson Springs, CAThu, Jan 14, 7:17 PM PST · 2089 days ago · 2 km deep · 14 km away
39. 1.610km WNW of The Geysers, CAFri, Jan 15, 8:26 AM PST · 2088 days ago · 3 km deep · 4 km away
40. 2.73km NE of The Geysers, CASat, Jan 16, 8:02 PM PST · 2087 days ago · 2 km deep · 9 km away · felt by 2
41. 1.61km E of The Geysers, CASun, Jan 17, 3:16 AM PST · 2087 days ago · 0 km deep · 9 km away
42. 1.813km NNE of Brooktrails, CASun, Jan 17, 1:37 PM PST · 2086 days ago · 9 km deep · 91 km away
43. 1.63km WNW of Cobb, CASun, Jan 17, 3:10 PM PST · 2086 days ago · 1 km deep · 6 km away
44. 2.414km W of Lakeport, CASun, Jan 17, 4:09 PM PST · 2086 days ago · 1 km deep · 30 km away
45. 1.614km W of Lakeport, CASun, Jan 17, 4:25 PM PST · 2086 days ago · 1 km deep · 30 km away
46. 2.815km W of Lakeport, CASun, Jan 17, 5:12 PM PST · 2086 days ago · 1 km deep · 30 km away · felt by 18
47. 1.55km NNW of Redwood Valley, CAMon, Jan 18, 10:50 AM PST · 2085 days ago · 6 km deep · 62 km away
48. 2.73km NNW of Santa Rosa, CAMon, Jan 18, 8:22 PM PST · 2085 days ago · 5 km deep · 41 km away · felt by 1,374
49. 1.75km NW of The Geysers, CATue, Jan 19, 10:54 AM PST · 2084 days ago · 3 km deep · 4 km away · felt by 1
50. 1.66km E of Santa Rosa, CAThu, Jan 21, 1:25 AM PST · 2083 days ago · 9 km deep · 47 km away · felt by 1
51. 1.73km SE of The Geysers, CAThu, Jan 21, 7:43 AM PST · 2082 days ago · 2 km deep · 12 km away
52. 1.88km NW of The Geysers, CAThu, Jan 21, 2:52 PM PST · 2082 days ago · 2 km deep · 1 km away
53. 1.77km NE of Lower Lake, CAThu, Jan 21, 5:55 PM PST · 2082 days ago · 0 km deep · 27 km away · felt by 1
54. 1.66km NNW of The Geysers, CAFri, Jan 22, 11:24 PM PST · 2081 days ago · 3 km deep · 3 km away
55. 1.63km NE of The Geysers, CASat, Jan 23, 9:57 AM PST · 2080 days ago · 1 km deep · 9 km away
56. 1.68km NW of The Geysers, CASat, Jan 23, 2:41 PM PST · 2080 days ago · 2 km deep · 1 km away
57. 1.96km NNE of Lake Pillsbury, CASat, Jan 23, 7:00 PM PST · 2080 days ago · 10 km deep · 70 km away
58. 1.83km SSW of Cobb, CASat, Jan 23, 9:46 PM PST · 2080 days ago · 2 km deep · 8 km away · felt by 1
59. 1.77km NW of The Geysers, CASun, Jan 24, 1:44 AM PST · 2080 days ago · 2 km deep · 2 km away
60. 2.23km NNE of The Geysers, CAMon, Jan 25, 12:00 AM PST · 2079 days ago · 1 km deep · 8 km away

The first 60 of 164.

Before

1. 1.66km NNW of The Geysers, CASat, Dec 26, 5:02 PM PST · 2108 days ago · 1 km deep · 4 km away
2. 1.84km N of Redwood Valley, CASat, Dec 26, 3:34 PM PST · 2108 days ago · 6 km deep · 61 km away
3. 1.913km W of Lakeport, CASat, Dec 26, 2:09 PM PST · 2108 days ago · 4 km deep · 30 km away
4. 1.712km SE of Laytonville, CASat, Dec 26, 10:40 AM PST · 2108 days ago · 8 km deep · 99 km away
5. 2.02km S of Anderson Springs, CASat, Dec 26, 4:13 AM PST · 2109 days ago · 1 km deep · 14 km away · felt by 1
6. 1.916km W of Ukiah, CAFri, Dec 25, 11:11 PM PST · 2109 days ago · 4 km deep · 62 km away
7. 1.87km WNW of The Geysers, CAFri, Dec 25, 2:25 PM PST · 2109 days ago · 2 km deep · 3 km away
8. 2.82km NNW of The Geysers, CAFri, Dec 25, 2:48 AM PST · 2110 days ago · 1 km deep · 7 km away · felt by 5
9. 1.79km NW of The Geysers, CAThu, Dec 24, 6:50 AM PST · 2110 days ago · 2 km deep · 0 km away
10. 1.65km NW of The Geysers, CAWed, Dec 23, 10:41 PM PST · 2111 days ago · 4 km deep · 4 km away
11. 1.63km NNW of The Geysers, CAWed, Dec 23, 6:24 PM PST · 2111 days ago · 4 km deep · 6 km away
12. 1.55km NNE of Windsor, CAWed, Dec 23, 12:23 PM PST · 2111 days ago · 1 km deep · 28 km away
13. 1.83km S of Cobb, CAWed, Dec 23, 8:46 AM PST · 2111 days ago · 3 km deep · 10 km away
14. 1.610km NNE of Brooktrails, CATue, Dec 22, 4:55 PM PST · 2112 days ago · 7 km deep · 89 km away
15. 2.21km WNW of The Geysers, CATue, Dec 22, 1:58 PM PST · 2112 days ago · 1 km deep · 8 km away
16. 2.44km NNW of Redwood Valley, CATue, Dec 22, 11:07 AM PST · 2112 days ago · 7 km deep · 62 km away · felt by 6
17. 2.018km NE of Sea Ranch, CATue, Dec 22, 4:53 AM PST · 2113 days ago · 6 km deep · 43 km away
18. 1.718km ESE of Boonville, CAMon, Dec 21, 5:34 PM PST · 2113 days ago · 4 km deep · 33 km away
19. 1.77km W of Cobb, CAMon, Dec 21, 2:03 PM PST · 2113 days ago · 2 km deep · 2 km away
20. 1.56km NW of The Geysers, CASun, Dec 20, 11:01 AM PST · 2114 days ago · 3 km deep · 3 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73503200. Read Mon, Oct 5, 2026, 2:00 AM UTC.