M2.3 earthquake 5 km E of Penngrove, California

Magnitude

2.3 (md), micro

Local time

Wed, Jan 6, 1982, 10:23 AM PST

UTC

1982-01-06 18:23:22 UTC

Depth

5.9 km (3.7 mi), shallow

Epicenter

38.301° N, 122.599° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.8 km in depth

Magnitude uncertainty

±0.07

Depth from

From location

Station coverage gap

80°

Stations used

14

• Penngrove, CaliforniaPopulation 2,522. Forecast6 kmE
• Petaluma, CaliforniaPopulation 60,438. Forecast8 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast18 kmSSE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast613 kmNW

After

1. 2.47 km W of Cobb, CaliforniaWed, Jan 6, 12:55 PM PST · 16330 days ago · 4 km deep · 60 km away
2. 2.65 km WSW of Cobb, CaliforniaThu, Jan 7, 6:45 PM PST · 16329 days ago · 0 km deep · 59 km away
3. 1.84 km E of Penngrove, CaliforniaSat, Jan 9, 3:04 AM PST · 16327 days ago · 0 km deep · 1 km away
4. 1.96 km W of Cobb, CaliforniaSat, Jan 9, 10:41 AM PST · 16327 days ago · 3 km deep · 60 km away
5. 1.610 km NW of Cobb, CaliforniaSat, Jan 9, 5:33 PM PST · 16327 days ago · -1 km deep · 67 km away
6. 2.54 km E of Penngrove, CaliforniaSat, Jan 9, 5:35 PM PST · 16327 days ago · 6 km deep · 1 km away
7. 1.75 km E of Penngrove, CaliforniaSat, Jan 9, 6:41 PM PST · 16327 days ago · 5 km deep · 1 km away
8. 2.12 km SSE of Concord, CaliforniaSat, Jan 9, 8:20 PM PST · 16327 days ago · 12 km deep · 63 km away
9. 2.45 km E of Penngrove, CaliforniaSat, Jan 9, 10:06 PM PST · 16327 days ago · 6 km deep · 1 km away
10. 2.48 km WNW of Montara, CaliforniaSun, Jan 10, 1:42 AM PST · 16327 days ago · 17 km deep · 82 km away
11. 3.516 km E of Lower Lake, CaliforniaSun, Jan 10, 11:56 AM PST · 16326 days ago · 70 km deep · 71 km away
12. 2.24 km NNW of Kelseyville, CaliforniaSun, Jan 10, 2:06 PM PST · 16326 days ago · 63 km deep · 82 km away
13. 1.58 km WSW of Cobb, CaliforniaSun, Jan 10, 5:26 PM PST · 16326 days ago · 2 km deep · 58 km away
14. 1.84 km WSW of Cobb, CaliforniaSun, Jan 10, 8:56 PM PST · 16326 days ago · 1 km deep · 57 km away
15. 3.16 km W of Cobb, CaliforniaSun, Jan 10, 10:49 PM PST · 16326 days ago · 1 km deep · 59 km away
16. 2.09 km WSW of Cobb, CaliforniaMon, Jan 11, 12:43 PM PST · 16325 days ago · 1 km deep · 58 km away
17. 1.710 km ENE of Blackhawk, CaliforniaMon, Jan 11, 11:32 PM PST · 16325 days ago · 9 km deep · 86 km away
18. 1.86 km W of Cobb, CaliforniaTue, Jan 12, 12:22 AM PST · 16325 days ago · 3 km deep · 60 km away
19. 1.66 km WSW of Cobb, CaliforniaTue, Jan 12, 6:06 AM PST · 16324 days ago · 0 km deep · 58 km away
20. 1.69 km W of Cobb, CaliforniaTue, Jan 12, 6:46 AM PST · 16324 days ago · 1 km deep · 60 km away
21. 1.910 km ENE of Blackhawk, CaliforniaTue, Jan 12, 11:11 AM PST · 16324 days ago · 4 km deep · 84 km away
22. 1.86 km WSW of Cobb, CaliforniaWed, Jan 13, 12:40 AM PST · 16324 days ago · 2 km deep · 59 km away
23. 1.74 km W of Cobb, CaliforniaWed, Jan 13, 1:48 AM PST · 16324 days ago · 0 km deep · 59 km away
24. 2.02 km SSE of Kelseyville, CaliforniaWed, Jan 13, 8:43 PM PST · 16323 days ago · 14 km deep · 76 km away
25. 3.07 km W of Cobb, CaliforniaWed, Jan 13, 9:22 PM PST · 16323 days ago · -1 km deep · 61 km away
26. 2.78 km W of Cobb, CaliforniaWed, Jan 13, 9:22 PM PST · 16323 days ago · -1 km deep · 61 km away
27. 2.63 km WNW of Clearlake Oaks, CaliforniaWed, Jan 13, 9:23 PM PST · 16323 days ago · 4 km deep · 83 km away
28. 1.67 km W of Cobb, CaliforniaWed, Jan 13, 9:24 PM PST · 16323 days ago · 1 km deep · 61 km away
29. 1.96 km W of Cobb, CaliforniaWed, Jan 13, 10:05 PM PST · 16323 days ago · 4 km deep · 60 km away
30. 2.04 km E of Geyserville, CaliforniaThu, Jan 14, 4:00 AM PST · 16322 days ago · 5 km deep · 50 km away
31. 1.86 km ESE of Roseland, CaliforniaThu, Jan 14, 4:39 AM PST · 16322 days ago · 9 km deep · 12 km away
32. 2.33 km ENE of Lower Lake, CaliforniaThu, Jan 14, 8:54 AM PST · 16322 days ago · 4 km deep · 69 km away
33. 1.73 km S of Clayton, CaliforniaThu, Jan 14, 12:05 PM PST · 16322 days ago · 3 km deep · 73 km away
34. 2.12 km SSW of Pittsburg, CaliforniaThu, Jan 14, 4:41 PM PST · 16322 days ago · 16 km deep · 70 km away
35. 1.83 km SW of North Richmond, CaliforniaThu, Jan 14, 5:44 PM PST · 16322 days ago · 5 km deep · 44 km away
36. 3.04 km WSW of Cobb, CaliforniaFri, Jan 15, 12:12 AM PST · 16322 days ago · 4 km deep · 58 km away
37. 1.97 km WSW of Cobb, CaliforniaSat, Jan 16, 3:52 AM PST · 16320 days ago · 2 km deep · 59 km away
38. 1.69 km WSW of Cobb, CaliforniaSat, Jan 16, 11:08 AM PST · 16320 days ago · 2 km deep · 59 km away
39. 2.21 km ESE of Pittsburg, CaliforniaSun, Jan 17, 4:43 AM PST · 16319 days ago · 17 km deep · 71 km away
40. 1.58 km WSW of Cobb, CaliforniaSun, Jan 17, 5:56 AM PST · 16319 days ago · 1 km deep · 59 km away
41. 1.66 km W of Cobb, CaliforniaSun, Jan 17, 8:15 AM PST · 16319 days ago · 3 km deep · 60 km away
42. 1.76 km W of Cobb, CaliforniaSun, Jan 17, 11:11 AM PST · 16319 days ago · 3 km deep · 60 km away
43. 1.59 km WSW of Cobb, CaliforniaSun, Jan 17, 11:28 AM PST · 16319 days ago · 1 km deep · 59 km away
44. 2.47 km WSW of Cobb, CaliforniaMon, Jan 18, 4:42 PM PST · 16318 days ago · 3 km deep · 59 km away
45. 3.03 km E of Berkeley, CaliforniaMon, Jan 18, 11:13 PM PST · 16318 days ago · 6 km deep · 58 km away
46. 3.03 km W of Hidden Valley Lake, CaliforniaThu, Jan 21, 8:15 AM PST · 16315 days ago · 4 km deep · 56 km away
47. 1.67 km WSW of Cobb, CaliforniaThu, Jan 21, 9:32 PM PST · 16315 days ago · 1 km deep · 59 km away
48. 2.36 km W of Cobb, CaliforniaThu, Jan 21, 11:45 PM PST · 16315 days ago · 3 km deep · 60 km away
49. 3.19 km WSW of Cobb, CaliforniaFri, Jan 22, 2:17 AM PST · 16315 days ago · 0 km deep · 59 km away
50. 2.01 km SE of Fairfax, CaliforniaSat, Jan 23, 11:09 PM PST · 16313 days ago · 5 km deep · 36 km away
51. 1.77 km WSW of Cobb, CaliforniaSun, Jan 24, 1:29 PM PST · 16312 days ago · 0 km deep · 59 km away
52. 2.03 km E of Berkeley, CaliforniaSun, Jan 24, 8:21 PM PST · 16312 days ago · 10 km deep · 58 km away
53. 2.14 km WSW of Antioch, CaliforniaMon, Jan 25, 5:30 AM PST · 16311 days ago · 15 km deep · 74 km away
54. 2.13 km SSE of Pittsburg, CaliforniaMon, Jan 25, 5:31 AM PST · 16311 days ago · 6 km deep · 72 km away
55. 2.34 km NNE of Benicia, CaliforniaMon, Jan 25, 4:13 PM PST · 16311 days ago · 5 km deep · 47 km away
56. 3.26 km W of Cobb, CaliforniaTue, Jan 26, 7:02 AM PST · 16310 days ago · 4 km deep · 60 km away
57. 1.59 km WSW of Cobb, CaliforniaTue, Jan 26, 3:13 PM PST · 16310 days ago · 1 km deep · 59 km away
58. 2.15 km NE of Santa Rosa, CaliforniaThu, Jan 28, 1:45 PM PST · 16308 days ago · 9 km deep · 20 km away
59. 2.67 km WSW of Cobb, CaliforniaThu, Jan 28, 8:39 PM PST · 16308 days ago · 0 km deep · 59 km away
60. 2.54 km WSW of Cobb, CaliforniaFri, Jan 29, 11:19 PM PST · 16307 days ago · 0 km deep · 57 km away

The first 60 of 154.

Before

1. 2.013 km NE of Angwin, CaliforniaWed, Jan 6, 5:24 AM PST · 16330 days ago · 11 km deep · 46 km away
2. 2.54 km SW of Rutherford, CaliforniaWed, Jan 6, 3:15 AM PST · 16330 days ago · 8 km deep · 19 km away
3. 2.44 km WSW of Cobb, CaliforniaWed, Jan 6, 12:53 AM PST · 16331 days ago · 1 km deep · 58 km away
4. 2.04 km E of Penngrove, CaliforniaWed, Jan 6, 12:14 AM PST · 16331 days ago · 5 km deep · 1 km away
5. 2.47 km WSW of Cobb, CaliforniaTue, Jan 5, 12:55 PM PST · 16331 days ago · 3 km deep · 59 km away
6. 2.65 km WSW of Cobb, CaliforniaMon, Jan 4, 5:59 PM PST · 16332 days ago · -1 km deep · 58 km away
7. 1.67 km WSW of Cobb, CaliforniaMon, Jan 4, 2:36 PM PST · 16332 days ago · 0 km deep · 59 km away
8. 1.912 km NE of Lucerne, CaliforniaSun, Jan 3, 3:42 PM PST · 16333 days ago · 0 km deep · 97 km away
9. 1.56 km W of Cobb, CaliforniaSun, Jan 3, 3:23 AM PST · 16333 days ago · 1 km deep · 59 km away
10. 2.012 km SW of Byron, CaliforniaSat, Jan 2, 6:05 PM PST · 16334 days ago · 15 km deep · 93 km away
11. 2.09 km W of Healdsburg, CaliforniaFri, Jan 1, 11:22 PM PST · 16335 days ago · 0 km deep · 49 km away
12. 2.07 km W of Cobb, CaliforniaFri, Jan 1, 8:02 PM PST · 16335 days ago · 1 km deep · 59 km away
13. 1.69 km WSW of Cobb, CaliforniaFri, Jan 1, 3:51 PM PST · 16335 days ago · 2 km deep · 59 km away
14. 1.87 km W of Cobb, CaliforniaFri, Jan 1, 12:36 PM PST · 16335 days ago · 2 km deep · 61 km away
15. 2.17 km NNW of Pittsburg, CaliforniaFri, Jan 1, 6:29 AM PST · 16335 days ago · 19 km deep · 65 km away
16. 1.66 km WSW of Cobb, CaliforniaThu, Dec 31, 11:41 PM PST · 16336 days ago · 0 km deep · 58 km away
17. 1.86 km WSW of Cobb, CaliforniaThu, Dec 31, 6:19 AM PST · 16336 days ago · 1 km deep · 57 km away
18. 2.35 km SW of Cobb, CaliforniaWed, Dec 30, 10:15 PM PST · 16337 days ago · 0 km deep · 56 km away
19. 1.77 km WSW of Cobb, CaliforniaWed, Dec 30, 8:22 PM PST · 16337 days ago · 3 km deep · 58 km away
20. 1.96 km ESE of Talmage, CaliforniaWed, Dec 30, 2:36 PM PST · 16337 days ago · 8 km deep · 100 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1071007. Read Tue, Sep 22, 2026, 10:23 PM UTC.