M1.6 earthquake 8 km W of Cobb, California

Magnitude

1.6 (md), micro

Local time

Thu, Mar 26, 1981, 3:44 AM PST

UTC

1981-03-26 11:44:12 UTC

Depth

0.4 km (0.3 mi), shallow

Epicenter

38.833° N, 122.819° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 1.7 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

152°

Stations used

7

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast22 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast44 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast671 kmNW

After

1. 1.614 km E of Potter Valley, CaliforniaSat, Mar 28, 5:21 AM PST · 16614 days ago · 6 km deep · 57 km away
2. 1.63 km NE of Clear Lake Riviera, CaliforniaSun, Mar 29, 11:13 PM PST · 16613 days ago · -1 km deep · 20 km away
3. 2.18 km ENE of Hidden Valley Lake, CaliforniaMon, Mar 30, 5:03 AM PST · 16612 days ago · 7 km deep · 31 km away
4. 1.62 km NE of Clear Lake Riviera, CaliforniaMon, Mar 30, 6:20 AM PST · 16612 days ago · 4 km deep · 19 km away
5. 1.76 km W of Cobb, CaliforniaMon, Mar 30, 3:08 PM PST · 16612 days ago · 2 km deep · 3 km away
6. 2.38 km ENE of Hidden Valley Lake, CaliforniaMon, Mar 30, 11:30 PM PST · 16612 days ago · 8 km deep · 31 km away
7. 1.77 km WSW of Cobb, CaliforniaTue, Mar 31, 5:06 PM PST · 16611 days ago · 2 km deep · 3 km away
8. 3.010 km W of Point Arena, CaliforniaTue, Mar 31, 8:22 PM PST · 16611 days ago · 7 km deep · 87 km away
9. 1.86 km WSW of Cobb, CaliforniaWed, Apr 1, 10:23 PM PST · 16610 days ago · 4 km deep · 3 km away
10. 2.08 km WSW of Cobb, CaliforniaThu, Apr 2, 11:39 AM PST · 16609 days ago · 1 km deep · 3 km away
11. 1.64 km WSW of Cobb, CaliforniaThu, Apr 2, 10:45 PM PST · 16609 days ago · 1 km deep · 6 km away
12. 1.89 km W of Cobb, CaliforniaFri, Apr 3, 4:15 AM PST · 16608 days ago · 1 km deep · 3 km away
13. 1.66 km WSW of Cobb, CaliforniaFri, Apr 3, 7:33 AM PST · 16608 days ago · 4 km deep · 4 km away
14. 1.612 km S of Comptche, CaliforniaSat, Apr 4, 2:55 AM PST · 16608 days ago · 7 km deep · 75 km away
15. 1.66 km W of Cobb, CaliforniaTue, Apr 7, 7:53 PM PST · 16604 days ago · 3 km deep · 3 km away
16. 1.64 km WSW of Cobb, CaliforniaWed, Apr 8, 2:27 AM PST · 16604 days ago · 2 km deep · 5 km away
17. 1.77 km WSW of Cobb, CaliforniaWed, Apr 8, 12:04 PM PST · 16603 days ago · 1 km deep · 3 km away
18. 2.1Northern CaliforniaWed, Apr 8, 6:53 PM PST · 16603 days ago · 3 km deep · 54 km away
19. 1.92 km SE of Calpella, CaliforniaWed, Apr 8, 8:37 PM PST · 16603 days ago · 3 km deep · 53 km away
20. 1.56 km W of Cobb, CaliforniaThu, Apr 9, 1:59 AM PST · 16603 days ago · 1 km deep · 2 km away
21. 2.27 km WSW of Cobb, CaliforniaThu, Apr 9, 9:20 PM PST · 16602 days ago · 2 km deep · 3 km away
22. 2.76 km W of Cobb, CaliforniaFri, Apr 10, 8:00 PM PST · 16601 days ago · 3 km deep · 3 km away
23. 1.96 km W of Cobb, CaliforniaFri, Apr 10, 10:16 PM PST · 16601 days ago · 4 km deep · 3 km away
24. 1.76 km WSW of Cobb, CaliforniaSat, Apr 11, 6:15 AM PST · 16600 days ago · 3 km deep · 3 km away
25. 2.417 km NE of Nice, CaliforniaSun, Apr 12, 2:09 AM PST · 16600 days ago · 8 km deep · 47 km away
26. 1.60 km W of Moskowite Corner, CaliforniaSun, Apr 12, 9:18 PM PST · 16599 days ago · 16 km deep · 69 km away
27. 1.9near the coast of Northern CaliforniaMon, Apr 13, 4:35 PM PST · 16598 days ago · 10 km deep · 84 km away
28. 1.89 km NE of Brooktrails, CaliforniaMon, Apr 13, 9:31 PM PST · 16598 days ago · 8 km deep · 84 km away
29. 2.120 km ENE of Brooktrails, CaliforniaTue, Apr 14, 6:47 PM PST · 16597 days ago · 8 km deep · 84 km away
30. 2.36 km WSW of Cobb, CaliforniaTue, Apr 14, 8:18 PM PST · 16597 days ago · 1 km deep · 3 km away
31. 2.27 km WSW of Cobb, CaliforniaTue, Apr 14, 8:28 PM PST · 16597 days ago · 1 km deep · 3 km away
32. 2.29 km WSW of Cobb, CaliforniaWed, Apr 15, 12:35 AM PST · 16597 days ago · 2 km deep · 4 km away
33. 1.821 km NNE of Potter Valley, CaliforniaWed, Apr 15, 6:23 AM PST · 16596 days ago · 8 km deep · 75 km away
34. 1.69 km WSW of Cobb, CaliforniaWed, Apr 15, 8:47 AM PST · 16596 days ago · 2 km deep · 4 km away
35. 2.821 km NNE of Potter Valley, CaliforniaWed, Apr 15, 9:07 AM PST · 16596 days ago · 8 km deep · 75 km away
36. 2.028 km NNE of Potter Valley, CaliforniaFri, Apr 17, 3:37 PM PST · 16594 days ago · 14 km deep · 81 km away
37. 2.33 km ESE of Talmage, CaliforniaFri, Apr 17, 6:50 PM PST · 16594 days ago · 5 km deep · 42 km away
38. 2.61 km NNW of Ukiah, CaliforniaFri, Apr 17, 6:51 PM PST · 16594 days ago · 4 km deep · 50 km away
39. 1.82 km NE of Ukiah, CaliforniaSat, Apr 18, 6:30 AM PST · 16593 days ago · 8 km deep · 49 km away
40. 1.715 km W of Calpella, CaliforniaSat, Apr 18, 8:13 PM PST · 16593 days ago · 4 km deep · 66 km away
41. 2.96 km W of Cobb, CaliforniaSun, Apr 19, 6:48 PM PST · 16592 days ago · 3 km deep · 3 km away
42. 1.84 km E of Clear Lake Riviera, CaliforniaSun, Apr 19, 10:30 PM PST · 16592 days ago · 0 km deep · 18 km away
43. 1.87 km W of Cobb, CaliforniaTue, Apr 21, 12:11 PM PST · 16590 days ago · 1 km deep · 1 km away
44. 1.611 km NE of Healdsburg, CaliforniaWed, Apr 22, 5:40 AM PST · 16589 days ago · 5 km deep · 19 km away
45. 1.86 km W of Cobb, CaliforniaThu, Apr 23, 2:33 PM PST · 16588 days ago · 2 km deep · 3 km away
46. 2.34 km WSW of Cobb, CaliforniaFri, Apr 24, 1:47 AM PST · 16588 days ago · 2 km deep · 6 km away
47. 1.64 km WSW of Cobb, CaliforniaFri, Apr 24, 1:48 AM PST · 16588 days ago · 2 km deep · 5 km away
48. 1.76 km W of Cobb, CaliforniaFri, Apr 24, 11:05 PM PST · 16587 days ago · 4 km deep · 2 km away
49. 1.79 km WSW of Cobb, CaliforniaSun, Apr 26, 6:03 AM PDT · 16585 days ago · 2 km deep · 4 km away
50. 2.16 km WSW of Cobb, CaliforniaSun, Apr 26, 2:08 PM PDT · 16585 days ago · 1 km deep · 5 km away
51. 1.86 km WSW of Cobb, CaliforniaSun, Apr 26, 2:12 PM PDT · 16585 days ago · 1 km deep · 5 km away
52. 2.18 km E of Hidden Valley Lake, CaliforniaSun, Apr 26, 7:58 PM PDT · 16585 days ago · 7 km deep · 31 km away
53. 1.66 km WSW of Cobb, CaliforniaWed, Apr 29, 3:59 AM PDT · 16582 days ago · 0 km deep · 4 km away
54. 2.95 km SW of Cobb, CaliforniaWed, Apr 29, 12:58 PM PDT · 16582 days ago · 0 km deep · 6 km away
55. 1.85 km SW of Cobb, CaliforniaWed, Apr 29, 5:54 PM PDT · 16582 days ago · 0 km deep · 6 km away
56. 1.56 km W of Cobb, CaliforniaThu, Apr 30, 7:58 AM PDT · 16581 days ago · 4 km deep · 3 km away
57. 1.910 km ESE of Willits, CaliforniaFri, May 1, 4:48 AM PDT · 16580 days ago · 6 km deep · 71 km away
58. 1.66 km WSW of Cobb, CaliforniaFri, May 1, 7:02 AM PDT · 16580 days ago · 0 km deep · 4 km away
59. 1.612 km S of Guinda, CaliforniaFri, May 1, 3:16 PM PDT · 16580 days ago · 4 km deep · 56 km away
60. 1.5near the coast of Northern CaliforniaFri, May 1, 10:08 PM PDT · 16580 days ago · 7 km deep · 76 km away

The first 60 of 119.

Before

1. 1.77 km W of Cobb, CaliforniaWed, Mar 25, 5:59 PM PST · 16617 days ago · 1 km deep · 1 km away
2. 2.09 km WSW of Cobb, CaliforniaWed, Mar 25, 12:38 PM PST · 16617 days ago · 2 km deep · 4 km away
3. 1.76 km WSW of Cobb, CaliforniaWed, Mar 25, 1:21 AM PST · 16618 days ago · 3 km deep · 3 km away
4. 2.06 km ESE of Roseland, CaliforniaTue, Mar 24, 9:19 PM PST · 16618 days ago · 8 km deep · 51 km away
5. 1.76 km WSW of Cobb, CaliforniaMon, Mar 23, 8:44 PM PST · 16619 days ago · 1 km deep · 3 km away
6. 1.77 km WSW of Cobb, CaliforniaMon, Mar 23, 1:02 PM PST · 16619 days ago · 0 km deep · 3 km away
7. 1.85 km WSW of Cobb, CaliforniaMon, Mar 23, 10:15 AM PST · 16619 days ago · 0 km deep · 5 km away
8. 2.27 km WSW of Cobb, CaliforniaMon, Mar 23, 9:52 AM PST · 16619 days ago · 2 km deep · 3 km away
9. 2.69 km E of Hidden Valley Lake, CaliforniaSun, Mar 22, 7:07 PM PST · 16620 days ago · 11 km deep · 33 km away
10. 1.79 km WSW of Cobb, CaliforniaSun, Mar 22, 1:08 AM PST · 16621 days ago · 1 km deep · 4 km away
11. 1.59 km W of Cobb, CaliforniaFri, Mar 20, 10:41 AM PST · 16622 days ago · 1 km deep · 3 km away
12. 1.88 km W of Cobb, CaliforniaFri, Mar 20, 4:29 AM PST · 16622 days ago · 1 km deep · 1 km away
13. 2.08 km W of Cobb, CaliforniaFri, Mar 20, 3:07 AM PST · 16622 days ago · 1 km deep · 0 km away
14. 1.96 km W of Cobb, CaliforniaWed, Mar 18, 7:08 AM PST · 16624 days ago · 3 km deep · 3 km away
15. 1.610 km E of Hidden Valley Lake, CaliforniaWed, Mar 18, 6:28 AM PST · 16624 days ago · 7 km deep · 33 km away
16. 2.29 km ENE of Hidden Valley Lake, CaliforniaWed, Mar 18, 5:59 AM PST · 16624 days ago · 8 km deep · 31 km away
17. 1.710 km NNW of Potter Valley, CaliforniaTue, Mar 17, 7:18 AM PST · 16625 days ago · 7 km deep · 71 km away
18. 1.65 km SW of Cobb, CaliforniaMon, Mar 16, 12:22 PM PST · 16626 days ago · 1 km deep · 6 km away
19. 1.86 km W of Cobb, CaliforniaMon, Mar 16, 9:34 AM PST · 16626 days ago · 4 km deep · 3 km away
20. 2.07 km WSW of Cobb, CaliforniaMon, Mar 16, 7:49 AM PST · 16626 days ago · 1 km deep · 3 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1061743. Read Tue, Sep 22, 2026, 10:27 PM UTC.