M1.9 earthquake 6 km W of Cobb, California

Magnitude

1.9 (md), micro

Local time

Wed, Mar 3, 1976, 12:15 PM PST

UTC

1976-03-03 20:15:27 UTC

Depth

3.2 km (2.0 mi), shallow

Epicenter

38.816° N, 122.801° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.18

Depth from

From location

Station coverage gap

47°

Stations used

20

• Cobb, CaliforniaPopulation 1,778. Forecast7 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast22 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast42 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast668 kmNW

After

1. 2.34 km WSW of Cobb, CaliforniaThu, Mar 4, 7:07 AM PST · 18464 days ago · 3 km deep · 3 km away
2. 3.14 km WSW of Cobb, CaliforniaThu, Mar 4, 7:08 AM PST · 18464 days ago · 1 km deep · 2 km away
3. 3.37 km WSW of Cobb, CaliforniaSat, Mar 6, 5:51 AM PST · 18462 days ago · 0 km deep · 1 km away
4. 1.78 km WSW of Cobb, CaliforniaSat, Mar 6, 12:49 PM PST · 18462 days ago · 1 km deep · 2 km away
5. 1.88 km W of Cobb, CaliforniaSun, Mar 7, 9:51 PM PST · 18461 days ago · -1 km deep · 2 km away
6. 1.97 km W of Cobb, CaliforniaMon, Mar 8, 4:58 PM PST · 18460 days ago · 3 km deep · 1 km away
7. 2.37 km W of Cobb, CaliforniaTue, Mar 9, 12:35 AM PST · 18460 days ago · 3 km deep · 1 km away
8. 1.67 km W of Cobb, CaliforniaTue, Mar 9, 12:36 AM PST · 18460 days ago · 3 km deep · 1 km away
9. 2.04 km W of Hopland, CaliforniaTue, Mar 9, 4:45 AM PST · 18459 days ago · 7 km deep · 36 km away
10. 2.16 km W of Cobb, CaliforniaTue, Mar 9, 7:07 AM PST · 18459 days ago · 0 km deep · 1 km away
11. 2.87 km W of Cobb, CaliforniaWed, Mar 10, 4:40 AM PST · 18458 days ago · 4 km deep · 0 km away
12. 1.68 km WSW of Cobb, CaliforniaSun, Mar 14, 5:21 PM PST · 18454 days ago · -1 km deep · 2 km away
13. 1.86 km S of Clear Lake Riviera, CaliforniaMon, Mar 15, 4:04 AM PST · 18453 days ago · 4 km deep · 11 km away
14. 1.66 km S of Clear Lake Riviera, CaliforniaMon, Mar 15, 4:40 AM PST · 18453 days ago · 2 km deep · 11 km away
15. 1.92 km SE of Clear Lake Riviera, CaliforniaMon, Mar 15, 12:16 PM PST · 18453 days ago · 1 km deep · 16 km away
16. 1.69 km W of Cobb, CaliforniaTue, Mar 16, 10:48 PM PST · 18452 days ago · 0 km deep · 3 km away
17. 1.88 km WSW of Cobb, CaliforniaWed, Mar 17, 5:57 PM PST · 18451 days ago · 4 km deep · 2 km away
18. 1.67 km W of Cobb, CaliforniaWed, Mar 17, 9:01 PM PST · 18451 days ago · 4 km deep · 0 km away
19. 1.98 km W of Cobb, CaliforniaThu, Mar 18, 1:56 AM PST · 18451 days ago · 0 km deep · 2 km away
20. 1.78 km WSW of Cobb, CaliforniaThu, Mar 18, 4:55 AM PST · 18450 days ago · 1 km deep · 2 km away
21. 2.78 km WSW of Cobb, CaliforniaThu, Mar 18, 4:57 AM PST · 18450 days ago · 1 km deep · 2 km away
22. 1.67 km E of Hopland, CaliforniaThu, Mar 18, 8:50 AM PST · 18450 days ago · 7 km deep · 27 km away
23. 2.27 km SW of Hopland, CaliforniaThu, Mar 18, 3:37 PM PST · 18450 days ago · 3 km deep · 36 km away
24. 2.118 km SW of Stonyford, CaliforniaFri, Mar 19, 6:16 AM PST · 18449 days ago · 8 km deep · 51 km away
25. 2.2Northern CaliforniaFri, Mar 19, 7:06 AM PST · 18449 days ago · 4 km deep · 1 km away
26. 2.117 km W of Stonyford, CaliforniaTue, Mar 23, 2:26 AM PST · 18446 days ago · 4 km deep · 62 km away
27. 1.77 km W of Cobb, CaliforniaSun, Mar 28, 3:05 AM PST · 18440 days ago · 0 km deep · 0 km away
28. 1.6Northern CaliforniaSun, Mar 28, 3:37 PM PST · 18440 days ago · 0 km deep · 1 km away
29. 1.912 km N of Cloverdale, CAMon, Mar 29, 1:42 PM PST · 18439 days ago · 3 km deep · 21 km away
30. 2.18 km N of Upper Lake, CaliforniaTue, Mar 30, 9:54 AM PST · 18438 days ago · 1 km deep · 48 km away
31. 2.16 km WSW of Cobb, CaliforniaTue, Mar 30, 6:04 PM PST · 18438 days ago · 0 km deep · 1 km away
32. 2.03 km NNW of Larkfield-Wikiup, CaliforniaTue, Mar 30, 11:06 PM PST · 18438 days ago · 7 km deep · 31 km away
33. 2.818 km NNE of Nice, CaliforniaWed, Mar 31, 4:30 PM PST · 18437 days ago · 7 km deep · 50 km away
34. 1.98 km WSW of Cobb, CaliforniaThu, Apr 1, 6:10 AM PST · 18436 days ago · 0 km deep · 2 km away
35. 1.96 km W of Cobb, CaliforniaMon, Apr 5, 4:24 AM PST · 18432 days ago · 3 km deep · 1 km away
36. 2.34 km W of Cobb, CaliforniaMon, Apr 5, 2:24 PM PST · 18432 days ago · 4 km deep · 2 km away
37. 2.49 km NNW of Redwood Valley, CaliforniaWed, Apr 7, 3:46 PM PST · 18430 days ago · 2 km deep · 70 km away
38. 1.95 km WNW of El Verano, CaliforniaThu, Apr 8, 3:28 PM PST · 18429 days ago · 0 km deep · 60 km away
39. 1.55 km WSW of Cobb, CaliforniaFri, Apr 9, 7:29 AM PST · 18428 days ago · 4 km deep · 2 km away
40. 2.49 km NE of Santa Rosa, CaliforniaSat, Apr 10, 6:18 PM PST · 18427 days ago · 4 km deep · 39 km away
41. 1.87 km E of Talmage, CaliforniaTue, Apr 13, 1:17 AM PST · 18425 days ago · 5 km deep · 43 km away
42. 1.93 km E of Talmage, CaliforniaTue, Apr 13, 4:22 AM PST · 18424 days ago · 5 km deep · 45 km away
43. 1.87 km W of Cobb, CaliforniaWed, Apr 14, 9:12 PM PST · 18423 days ago · 4 km deep · 1 km away
44. 3.17 km NE of Hopland, CaliforniaWed, Apr 14, 9:45 PM PST · 18423 days ago · 2 km deep · 32 km away
45. 3.17 km WSW of Cobb, CaliforniaThu, Apr 15, 1:08 AM PST · 18423 days ago · 1 km deep · 2 km away
46. 1.76 km W of Cobb, CaliforniaSat, Apr 17, 7:21 AM PST · 18420 days ago · 4 km deep · 1 km away
47. 2.36 km W of Cobb, CaliforniaSat, Apr 17, 7:32 AM PST · 18420 days ago · 4 km deep · 1 km away
48. 1.88 km W of Cobb, CaliforniaSat, Apr 17, 1:03 PM PST · 18420 days ago · 1 km deep · 2 km away
49. 2.15 km ESE of Healdsburg, CaliforniaSun, Apr 18, 1:48 AM PST · 18420 days ago · 6 km deep · 24 km away
50. 2.522 km WSW of Williams, CaliforniaMon, Apr 19, 2:40 PM PST · 18418 days ago · 3 km deep · 46 km away
51. 1.96 km W of Cobb, CaliforniaTue, Apr 20, 3:03 AM PST · 18417 days ago · 3 km deep · 0 km away
52. 2.27 km NNE of Hopland, CaliforniaWed, Apr 21, 5:07 AM PST · 18416 days ago · 3 km deep · 33 km away
53. 2.46 km WSW of Glen Ellen, CaliforniaWed, Apr 21, 8:06 AM PST · 18416 days ago · 8 km deep · 56 km away
54. 2.1Northern CaliforniaThu, Apr 22, 7:38 PM PST · 18415 days ago · 4 km deep · 0 km away
55. 2.87 km NE of Hopland, CaliforniaFri, Apr 23, 1:03 AM PST · 18415 days ago · 3 km deep · 33 km away
56. 1.95 km SW of Cobb, CaliforniaFri, Apr 23, 5:52 AM PST · 18414 days ago · 5 km deep · 5 km away
57. 1.7Northern CaliforniaSat, Apr 24, 7:55 PM PST · 18413 days ago · 2 km deep · 2 km away
58. 1.96 km W of Cobb, CaliforniaSat, Apr 24, 8:11 PM PST · 18413 days ago · 4 km deep · 0 km away
59. 2.411 km ESE of Hidden Valley Lake, CaliforniaSun, Apr 25, 12:02 PM PDT · 18412 days ago · 7 km deep · 32 km away
60. 2.17 km NNE of Hopland, CaliforniaMon, Apr 26, 5:01 AM PDT · 18411 days ago · 1 km deep · 34 km away

The first 60 of 65.

Before

1. 2.76 km W of Cobb, CaliforniaWed, Mar 3, 11:36 AM PST · 18465 days ago · 4 km deep · 1 km away
2. 1.57 km W of Cobb, CaliforniaMon, Mar 1, 5:17 PM PST · 18467 days ago · 2 km deep · 1 km away
3. 2.47 km WSW of Cobb, CaliforniaThu, Feb 26, 7:45 PM PST · 18471 days ago · -1 km deep · 1 km away
4. 1.58 km W of Cobb, CaliforniaThu, Feb 26, 4:22 PM PST · 18471 days ago · -1 km deep · 2 km away
5. 2.28 km WSW of Cobb, CaliforniaTue, Feb 24, 11:25 PM PST · 18473 days ago · 4 km deep · 2 km away
6. 2.44 km ENE of Kenwood, CaliforniaTue, Feb 24, 10:24 PM PST · 18473 days ago · 8 km deep · 50 km away
7. 2.54 km E of Geyserville, CaliforniaTue, Feb 24, 5:25 PM PST · 18473 days ago · 4 km deep · 13 km away
8. 2.57 km W of Cobb, CaliforniaTue, Feb 24, 3:53 PM PST · 18473 days ago · 0 km deep · 1 km away
9. 1.97 km W of Cobb, CaliforniaSun, Feb 22, 1:15 AM PST · 18476 days ago · 0 km deep · 1 km away
10. 2.16 km W of Cobb, CaliforniaThu, Feb 19, 1:41 PM PST · 18478 days ago · 3 km deep · 0 km away
11. 1.96 km WSW of Cobb, CaliforniaTue, Feb 17, 6:42 PM PST · 18480 days ago · 1 km deep · 1 km away
12. 1.74 km WSW of Cobb, CaliforniaTue, Feb 17, 4:32 AM PST · 18480 days ago · 2 km deep · 3 km away
13. 1.87 km W of Cobb, CaliforniaSun, Feb 15, 5:16 PM PST · 18482 days ago · 3 km deep · 1 km away
14. 2.17 km W of Cobb, CaliforniaSun, Feb 15, 5:10 PM PST · 18482 days ago · 3 km deep · 0 km away
15. 2.57 km W of Cobb, CaliforniaSun, Feb 15, 5:10 PM PST · 18482 days ago · 4 km deep · 0 km away
16. 3.614 km SSW of Willits, CaliforniaSun, Feb 15, 11:12 AM PST · 18482 days ago · 11 km deep · 73 km away
17. 2.63 km NE of Santa Rosa, CaliforniaThu, Feb 12, 7:21 AM PST · 18485 days ago · 8 km deep · 40 km away
18. 1.67 km WSW of Cobb, CaliforniaTue, Feb 10, 10:55 PM PST · 18487 days ago · 3 km deep · 1 km away
19. 1.77 km W of Cobb, CaliforniaSun, Feb 8, 9:10 AM PST · 18489 days ago · 3 km deep · 1 km away
20. 2.316 km NE of Nice, CaliforniaSun, Feb 8, 8:24 AM PST · 18489 days ago · 8 km deep · 46 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1028982. Read Tue, Sep 22, 2026, 10:27 PM UTC.