M1.8 earthquake 7 km W of Cobb, California

Magnitude

1.8 (md), micro

Local time

Thu, Jun 25, 1981, 4:54 PM PDT

UTC

1981-06-25 23:54:05 UTC

Depth

0.6 km (0.4 mi), shallow

Epicenter

38.821° N, 122.811° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.10

Depth from

From location

Station coverage gap

73°

Stations used

14

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast22 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast43 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast669 kmNW

After

1. 1.87 km WSW of Cobb, CaliforniaThu, Jun 25, 10:30 PM PDT · 16530 days ago · 1 km deep · 2 km away
2. 2.56 km WSW of Cobb, CaliforniaFri, Jun 26, 6:26 AM PDT · 16530 days ago · 0 km deep · 3 km away
3. 1.78 km WSW of Cobb, CaliforniaFri, Jun 26, 12:13 PM PDT · 16530 days ago · 0 km deep · 2 km away
4. 2.56 km W of Cobb, CaliforniaFri, Jun 26, 3:15 PM PDT · 16530 days ago · 4 km deep · 1 km away
5. 1.66 km W of Cobb, CaliforniaFri, Jun 26, 7:13 PM PDT · 16530 days ago · 3 km deep · 1 km away
6. 1.68 km NE of Healdsburg, CaliforniaFri, Jun 26, 8:10 PM PDT · 16529 days ago · 6 km deep · 16 km away
7. 3.0Northern CaliforniaSat, Jun 27, 4:20 AM PDT · 16529 days ago · 4 km deep · 2 km away
8. 2.11 km SW of Stonyford, CaliforniaSat, Jun 27, 4:33 AM PDT · 16529 days ago · 7 km deep · 64 km away
9. 1.96 km W of Cobb, CaliforniaSat, Jun 27, 7:53 AM PDT · 16529 days ago · 4 km deep · 2 km away
10. 2.64 km WSW of Cobb, CaliforniaMon, Jun 29, 5:37 AM PDT · 16527 days ago · 3 km deep · 4 km away
11. 1.97 km WNW of Philo, CaliforniaMon, Jun 29, 11:29 AM PDT · 16527 days ago · 6 km deep · 68 km away
12. 1.76 km WSW of Cobb, CaliforniaTue, Jun 30, 12:17 AM PDT · 16526 days ago · 1 km deep · 2 km away
13. 2.05 km ESE of Talmage, CaliforniaTue, Jun 30, 4:55 AM PDT · 16526 days ago · 7 km deep · 42 km away
14. 1.62 km SE of Talmage, CaliforniaTue, Jun 30, 8:38 PM PDT · 16525 days ago · 5 km deep · 44 km away
15. 1.67 km NW of Redwood Valley, CaliforniaWed, Jul 1, 6:45 AM PDT · 16525 days ago · 7 km deep · 68 km away
16. 1.71 km NNW of Boonville, CaliforniaThu, Jul 2, 7:32 PM PDT · 16523 days ago · 4 km deep · 54 km away
17. 2.111 km S of Comptche, CaliforniaFri, Jul 3, 4:51 AM PDT · 16523 days ago · 4 km deep · 75 km away
18. 1.96 km W of Stonyford, CaliforniaFri, Jul 3, 2:33 PM PDT · 16523 days ago · 0 km deep · 63 km away
19. 2.06 km SW of Cobb, CaliforniaFri, Jul 3, 6:13 PM PDT · 16523 days ago · 1 km deep · 5 km away
20. 2.24 km W of Stonyford, CaliforniaFri, Jul 3, 8:20 PM PDT · 16522 days ago · 3 km deep · 63 km away
21. 2.09 km WSW of Cobb, CaliforniaSat, Jul 4, 3:01 PM PDT · 16522 days ago · 2 km deep · 3 km away
22. 2.18 km W of Calistoga, CaliforniaSun, Jul 5, 2:42 PM PDT · 16521 days ago · 7 km deep · 29 km away
23. 1.75 km WNW of Potter Valley, CaliforniaSun, Jul 5, 7:08 PM PDT · 16521 days ago · -1 km deep · 66 km away
24. 1.67 km WSW of Cobb, CaliforniaMon, Jul 6, 6:09 AM PDT · 16520 days ago · 1 km deep · 3 km away
25. 1.73 km N of Larkfield-Wikiup, CaliforniaMon, Jul 6, 1:31 PM PDT · 16520 days ago · 6 km deep · 31 km away
26. 2.14 km NNE of Clearlake, CaliforniaMon, Jul 6, 4:38 PM PDT · 16520 days ago · 0 km deep · 26 km away
27. 2.13 km WSW of Redwood Valley, CaliforniaTue, Jul 7, 2:57 PM PDT · 16519 days ago · 2 km deep · 61 km away
28. 2.010 km E of Comptche, CaliforniaWed, Jul 8, 4:48 PM PDT · 16518 days ago · 6 km deep · 75 km away
29. 2.18 km NNW of Redwood Valley, CaliforniaWed, Jul 8, 8:56 PM PDT · 16517 days ago · 1 km deep · 68 km away
30. 1.818 km NE of Potter Valley, CaliforniaThu, Jul 9, 7:54 AM PDT · 16517 days ago · 7 km deep · 70 km away
31. 2.29 km WSW of Cobb, CaliforniaFri, Jul 10, 4:03 AM PDT · 16516 days ago · 1 km deep · 2 km away
32. 2.08 km NW of Redwood Valley, CaliforniaFri, Jul 10, 9:05 AM PDT · 16516 days ago · 2 km deep · 68 km away
33. 1.822 km NE of Potter Valley, CaliforniaFri, Jul 10, 9:11 PM PDT · 16515 days ago · 11 km deep · 72 km away
34. 1.87 km NNW of Redwood Valley, CaliforniaSat, Jul 11, 12:56 PM PDT · 16515 days ago · 5 km deep · 68 km away
35. 2.18 km NE of Hidden Valley Lake, CaliforniaSun, Jul 12, 3:31 PM PDT · 16514 days ago · 8 km deep · 28 km away
36. 1.54 km WSW of Cobb, CaliforniaSun, Jul 12, 5:16 PM PDT · 16514 days ago · 1 km deep · 4 km away
37. 1.919 km ENE of Potter Valley, CaliforniaSun, Jul 12, 10:08 PM PDT · 16513 days ago · 9 km deep · 62 km away
38. 1.824 km NE of Potter Valley, CaliforniaMon, Jul 13, 4:15 AM PDT · 16513 days ago · 12 km deep · 76 km away
39. 1.88 km NW of Redwood Valley, CaliforniaMon, Jul 13, 7:17 AM PDT · 16513 days ago · 3 km deep · 68 km away
40. 2.122 km WNW of Elk Creek, CaliforniaMon, Jul 13, 11:56 AM PDT · 16513 days ago · 6 km deep · 93 km away
41. 1.56 km W of Cobb, CaliforniaMon, Jul 13, 3:23 PM PDT · 16513 days ago · 3 km deep · 1 km away
42. 1.919 km ENE of Potter Valley, CaliforniaMon, Jul 13, 7:29 PM PDT · 16512 days ago · 11 km deep · 62 km away
43. 2.46 km SW of Kenwood, CaliforniaTue, Jul 14, 4:04 AM PDT · 16512 days ago · 11 km deep · 53 km away
44. 1.52 km WSW of Redwood Valley, CaliforniaTue, Jul 14, 12:20 PM PDT · 16512 days ago · 6 km deep · 61 km away
45. 1.56 km W of Cobb, CaliforniaWed, Jul 15, 7:33 PM PDT · 16510 days ago · 3 km deep · 1 km away
46. 2.24 km WSW of Cobb, CaliforniaWed, Jul 15, 8:06 PM PDT · 16510 days ago · 1 km deep · 4 km away
47. 2.10 km NNW of Larkfield-Wikiup, CaliforniaFri, Jul 17, 2:04 PM PDT · 16509 days ago · 2 km deep · 34 km away
48. 1.99 km WSW of Cobb, CaliforniaSat, Jul 18, 2:08 AM PDT · 16508 days ago · 1 km deep · 3 km away
49. 2.04 km WSW of Cobb, CaliforniaSun, Jul 19, 9:42 AM PDT · 16507 days ago · 1 km deep · 4 km away
50. 1.85 km WSW of Kenwood, CaliforniaSun, Jul 19, 2:42 PM PDT · 16507 days ago · 8 km deep · 51 km away
51. 2.17 km W of Cobb, CaliforniaSun, Jul 19, 9:37 PM PDT · 16506 days ago · 4 km deep · 1 km away
52. 1.97 km WSW of Cobb, CaliforniaTue, Jul 21, 3:40 PM PDT · 16505 days ago · 2 km deep · 2 km away
53. 2.07 km E of Larkfield-Wikiup, CaliforniaTue, Jul 21, 5:26 PM PDT · 16505 days ago · 5 km deep · 35 km away
54. 1.55 km WSW of Cobb, CaliforniaTue, Jul 21, 7:54 PM PDT · 16504 days ago · 4 km deep · 3 km away
55. 1.96 km W of Cobb, CaliforniaWed, Jul 22, 1:28 AM PDT · 16504 days ago · 3 km deep · 2 km away
56. 1.76 km W of Cobb, CaliforniaWed, Jul 22, 2:19 AM PDT · 16504 days ago · 3 km deep · 1 km away
57. 1.56 km W of Cobb, CaliforniaWed, Jul 22, 7:56 AM PDT · 16504 days ago · 2 km deep · 1 km away
58. 2.04 km ESE of Calpella, CaliforniaWed, Jul 22, 10:50 AM PDT · 16504 days ago · 6 km deep · 54 km away
59. 1.67 km E of Willits, CaliforniaWed, Jul 22, 5:33 PM PDT · 16504 days ago · 8 km deep · 76 km away
60. 2.04 km WSW of Cobb, CaliforniaFri, Jul 24, 6:46 PM PDT · 16502 days ago · 2 km deep · 4 km away

The first 60 of 127.

Before

1. 1.69 km WSW of Cobb, CaliforniaThu, Jun 25, 9:54 AM PDT · 16531 days ago · 1 km deep · 3 km away
2. 1.79 km WSW of Cobb, CaliforniaThu, Jun 25, 1:31 AM PDT · 16531 days ago · 2 km deep · 3 km away
3. 2.34 km ESE of Clear Lake Riviera, CaliforniaWed, Jun 24, 10:00 AM PDT · 16532 days ago · -1 km deep · 17 km away
4. 1.97 km WSW of Cobb, CaliforniaTue, Jun 23, 10:18 AM PDT · 16533 days ago · -1 km deep · 3 km away
5. 1.77 km WSW of Cobb, CaliforniaMon, Jun 22, 4:59 PM PDT · 16534 days ago · 0 km deep · 2 km away
6. 2.421 km WSW of Williams, CaliforniaMon, Jun 22, 2:15 PM PDT · 16534 days ago · -1 km deep · 47 km away
7. 1.66 km W of Cobb, CaliforniaMon, Jun 22, 7:59 AM PDT · 16534 days ago · 1 km deep · 1 km away
8. 1.66 km W of Cobb, CaliforniaMon, Jun 22, 7:56 AM PDT · 16534 days ago · 0 km deep · 1 km away
9. 3.518 km WSW of Williams, CaliforniaMon, Jun 22, 6:32 AM PDT · 16534 days ago · 12 km deep · 50 km away
10. 1.65 km NNE of Rohnert Park, CaliforniaMon, Jun 22, 2:05 AM PDT · 16534 days ago · 16 km deep · 50 km away
11. 1.66 km W of Cobb, CaliforniaSun, Jun 21, 8:02 AM PDT · 16535 days ago · 4 km deep · 1 km away
12. 1.67 km WSW of Cobb, CaliforniaSat, Jun 20, 1:35 AM PDT · 16536 days ago · 3 km deep · 3 km away
13. 2.57 km WSW of Cobb, CaliforniaFri, Jun 19, 7:21 PM PDT · 16536 days ago · 1 km deep · 2 km away
14. 1.76 km W of Lower Lake, CaliforniaFri, Jun 19, 4:07 PM PDT · 16537 days ago · 3 km deep · 14 km away
15. 2.35 km SW of Cobb, CAFri, Jun 19, 2:40 PM PDT · 16537 days ago · -1 km deep · 6 km away
16. 1.76 km W of Cobb, CaliforniaWed, Jun 17, 7:28 AM PDT · 16539 days ago · 4 km deep · 1 km away
17. 1.75 km SW of Cobb, CaliforniaTue, Jun 16, 4:51 AM PDT · 16540 days ago · -1 km deep · 5 km away
18. 1.86 km W of Cobb, CaliforniaTue, Jun 16, 2:11 AM PDT · 16540 days ago · 3 km deep · 1 km away
19. 2.18 km W of Cobb, CaliforniaTue, Jun 16, 1:40 AM PDT · 16540 days ago · 1 km deep · 1 km away
20. 1.73 km E of Windsor, CaliforniaMon, Jun 15, 9:48 AM PDT · 16541 days ago · 4 km deep · 31 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1064893. Read Mon, Sep 28, 2026, 1:50 PM UTC.