M2.2 earthquake 6 km W of Cobb, California

Magnitude

2.2 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sun, Mar 15, 1987, 10:03 AM PST

UTC

1987-03-15 18:03:00 UTC

Depth

1.7 km (1.0 mi), shallow

Epicenter

38.824° N, 122.796° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.17

Depth from

From location

Station coverage gap

40°

Stations used

19

• Cobb, CaliforniaPopulation 1,778. Forecast6 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast21 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast43 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast669 kmNW

After

1. 1.99 km W of Cobb, CaliforniaMon, Mar 16, 8:43 AM PST · 14446 days ago · 1 km deep · 3 km away
2. 1.66 km W of Cobb, CaliforniaMon, Mar 16, 3:05 PM PST · 14446 days ago · 3 km deep · 0 km away
3. 1.64 km SW of Cobb, CaliforniaMon, Mar 16, 6:57 PM PST · 14446 days ago · 0 km deep · 4 km away
4. 1.88 km S of Cobb, CaliforniaMon, Mar 16, 8:19 PM PST · 14446 days ago · -1 km deep · 11 km away
5. 2.85 km SW of Cobb, CaliforniaTue, Mar 17, 3:21 AM PST · 14445 days ago · 0 km deep · 6 km away
6. 2.06 km WSW of Cobb, CaliforniaTue, Mar 17, 2:34 PM PST · 14445 days ago · 4 km deep · 2 km away
7. 1.84 km W of Cobb, CaliforniaTue, Mar 17, 6:49 PM PST · 14445 days ago · 1 km deep · 2 km away
8. 1.94 km WSW of Cobb, CaliforniaTue, Mar 17, 8:00 PM PST · 14445 days ago · -1 km deep · 3 km away
9. 1.65 km SW of Cobb, CaliforniaTue, Mar 17, 10:42 PM PST · 14444 days ago · 2 km deep · 5 km away
10. 1.69 km SSW of Cloverdale, CaliforniaWed, Mar 18, 3:37 AM PST · 14444 days ago · 7 km deep · 26 km away
11. 2.06 km W of Cobb, CaliforniaWed, Mar 18, 8:18 PM PST · 14444 days ago · 3 km deep · 1 km away
12. 2.26 km W of Cobb, CaliforniaWed, Mar 18, 9:19 PM PST · 14443 days ago · 4 km deep · 1 km away
13. 1.76 km W of Cobb, CaliforniaWed, Mar 18, 9:34 PM PST · 14443 days ago · 3 km deep · 1 km away
14. 1.67 km W of Cobb, CaliforniaThu, Mar 19, 3:24 PM PST · 14443 days ago · 0 km deep · 2 km away
15. 3.07 km W of Cobb, CaliforniaFri, Mar 20, 12:36 AM PST · 14442 days ago · 4 km deep · 1 km away
16. 2.33 km ENE of Anchor Bay, CaliforniaFri, Mar 20, 6:18 AM PST · 14442 days ago · 11 km deep · 65 km away
17. 1.56 km NE of Geyserville, CaliforniaFri, Mar 20, 7:58 PM PST · 14442 days ago · 5 km deep · 10 km away
18. 1.85 km WSW of Cobb, CaliforniaSat, Mar 21, 5:59 AM PST · 14441 days ago · 2 km deep · 2 km away
19. 2.66 km W of Cobb, CaliforniaSat, Mar 21, 6:04 AM PST · 14441 days ago · 4 km deep · 1 km away
20. 1.69 km W of Cobb, CaliforniaSat, Mar 21, 6:27 PM PST · 14441 days ago · 8 km deep · 3 km away
21. 1.58 km WSW of Cobb, CaliforniaSun, Mar 22, 3:25 AM PST · 14440 days ago · 11 km deep · 3 km away
22. 1.66 km SW of Cobb, CaliforniaSun, Mar 22, 12:32 PM PST · 14440 days ago · 1 km deep · 5 km away
23. 1.55 km SW of Cobb, CaliforniaSun, Mar 22, 12:53 PM PST · 14440 days ago · 1 km deep · 5 km away
24. 1.65 km SW of Cobb, CaliforniaSun, Mar 22, 8:37 PM PST · 14440 days ago · 3 km deep · 5 km away
25. 1.65 km W of Cobb, CaliforniaSun, Mar 22, 10:08 PM PST · 14439 days ago · 1 km deep · 1 km away
26. 2.16 km SW of Cobb, CaliforniaMon, Mar 23, 1:30 AM PST · 14439 days ago · 0 km deep · 5 km away
27. 1.610 km W of Cobb, CaliforniaMon, Mar 23, 3:12 AM PST · 14439 days ago · 4 km deep · 4 km away
28. 3.17 km WSW of Cobb, CaliforniaMon, Mar 23, 8:44 AM PST · 14439 days ago · 1 km deep · 2 km away
29. 1.74 km W of Cobb, CaliforniaMon, Mar 23, 1:48 PM PST · 14439 days ago · 0 km deep · 2 km away
30. 2.37 km WSW of Cobb, CaliforniaTue, Mar 24, 6:05 AM PST · 14438 days ago · 1 km deep · 2 km away
31. 1.88 km W of Cobb, CaliforniaWed, Mar 25, 12:43 AM PST · 14437 days ago · 3 km deep · 2 km away
32. 2.08 km W of Cobb, CaliforniaWed, Mar 25, 2:00 AM PST · 14437 days ago · 2 km deep · 2 km away
33. 1.76 km W of Cobb, CaliforniaWed, Mar 25, 2:09 AM PST · 14437 days ago · 1 km deep · 1 km away
34. 1.66 km W of Cobb, CaliforniaWed, Mar 25, 10:51 AM PST · 14437 days ago · 3 km deep · 0 km away
35. 1.75 km WNW of Cobb, CaliforniaThu, Mar 26, 10:37 AM PST · 14436 days ago · 1 km deep · 3 km away
36. 1.89 km ESE of Hidden Valley Lake, CaliforniaThu, Mar 26, 10:45 AM PST · 14436 days ago · 5 km deep · 30 km away
37. 1.81 km WSW of Hopland, CaliforniaThu, Mar 26, 9:46 PM PST · 14435 days ago · 0 km deep · 33 km away
38. 1.59 km NW of Cobb, CaliforniaFri, Mar 27, 5:27 AM PST · 14435 days ago · 1 km deep · 7 km away
39. 2.33 km NE of Anchor Bay, CaliforniaFri, Mar 27, 2:42 PM PST · 14435 days ago · 0 km deep · 65 km away
40. 1.86 km W of Cobb, CaliforniaFri, Mar 27, 9:49 PM PST · 14434 days ago · 3 km deep · 1 km away
41. 1.6Northern CaliforniaSat, Mar 28, 4:15 AM PST · 14434 days ago · 0 km deep · 3 km away
42. 1.77 km W of Cobb, CaliforniaSat, Mar 28, 9:45 AM PST · 14434 days ago · 3 km deep · 2 km away
43. 1.65 km WSW of Cobb, CaliforniaSat, Mar 28, 12:17 PM PST · 14434 days ago · 0 km deep · 3 km away
44. 1.58 km W of Cobb, CaliforniaSat, Mar 28, 4:47 PM PST · 14434 days ago · 1 km deep · 2 km away
45. 1.70 km SSW of Larkfield-Wikiup, CaliforniaSat, Mar 28, 4:51 PM PST · 14434 days ago · 0 km deep · 36 km away
46. 3.05 km WSW of Cobb, CaliforniaSat, Mar 28, 9:26 PM PST · 14433 days ago · 1 km deep · 3 km away
47. 2.16 km WSW of Cobb, CaliforniaSun, Mar 29, 4:08 AM PST · 14433 days ago · 0 km deep · 3 km away
48. 2.54 km WSW of Cobb, CaliforniaSun, Mar 29, 5:53 AM PST · 14433 days ago · -1 km deep · 3 km away
49. 2.06 km WSW of Cobb, CaliforniaSun, Mar 29, 7:37 AM PST · 14433 days ago · 0 km deep · 3 km away
50. 1.55 km SW of Cobb, CaliforniaSun, Mar 29, 12:52 PM PST · 14433 days ago · 2 km deep · 5 km away
51. 2.95 km SW of Cobb, CaliforniaSun, Mar 29, 10:20 PM PST · 14432 days ago · 3 km deep · 4 km away
52. 1.95 km SW of Cobb, CaliforniaTue, Mar 31, 1:09 AM PST · 14431 days ago · 1 km deep · 5 km away
53. 1.76 km W of Cobb, CaliforniaTue, Mar 31, 4:51 AM PST · 14431 days ago · 3 km deep · 1 km away
54. 2.615 km W of Guinda, CaliforniaTue, Mar 31, 2:55 PM PST · 14431 days ago · -1 km deep · 37 km away
55. 1.64 km ESE of Boonville, CATue, Mar 31, 8:46 PM PST · 14431 days ago · 4 km deep · 49 km away
56. 1.84 km ESE of Boonville, CaliforniaTue, Mar 31, 11:33 PM PST · 14430 days ago · 5 km deep · 49 km away
57. 1.63 km ESE of Boonville, CaliforniaWed, Apr 1, 6:21 AM PST · 14430 days ago · 5 km deep · 50 km away
58. 2.96 km WSW of Cobb, CaliforniaWed, Apr 1, 1:42 PM PST · 14430 days ago · 4 km deep · 2 km away
59. 2.06 km SW of Cobb, CaliforniaWed, Apr 1, 2:02 PM PST · 14430 days ago · -1 km deep · 4 km away
60. 1.77 km W of Cobb, CaliforniaThu, Apr 2, 1:40 AM PST · 14429 days ago · 0 km deep · 2 km away

The first 60 of 172.

Before

1. 2.47 km WSW of Cobb, CaliforniaSun, Mar 15, 6:58 AM PST · 14447 days ago · 1 km deep · 2 km away
2. 2.4Northern CaliforniaSun, Mar 15, 6:35 AM PST · 14447 days ago · 3 km deep · 1 km away
3. 1.76 km WSW of Cobb, CaliforniaSat, Mar 14, 11:03 AM PST · 14448 days ago · 1 km deep · 2 km away
4. 2.07 km E of Clearlake Oaks, CaliforniaSat, Mar 14, 10:57 AM PST · 14448 days ago · 1 km deep · 29 km away
5. 1.55 km SW of Cobb, CaliforniaSat, Mar 14, 7:03 AM PST · 14448 days ago · 2 km deep · 4 km away
6. 2.17 km WSW of Cobb, CaliforniaSat, Mar 14, 6:03 AM PST · 14448 days ago · 2 km deep · 2 km away
7. 1.65 km N of Novato, CaliforniaFri, Mar 13, 3:51 PM PST · 14449 days ago · 2 km deep · 77 km away
8. 2.89 km WSW of Cobb, CaliforniaFri, Mar 13, 7:09 AM PST · 14449 days ago · 2 km deep · 4 km away
9. 3.09 km WSW of Cobb, CaliforniaFri, Mar 13, 7:08 AM PST · 14449 days ago · 3 km deep · 4 km away
10. 1.56 km W of Cobb, CaliforniaFri, Mar 13, 2:27 AM PST · 14449 days ago · 3 km deep · 1 km away
11. 1.86 km WSW of Cobb, CaliforniaFri, Mar 13, 12:27 AM PST · 14449 days ago · 1 km deep · 2 km away
12. 1.68 km WSW of Cobb, CaliforniaThu, Mar 12, 9:18 PM PST · 14449 days ago · 2 km deep · 3 km away
13. 1.512 km ESE of Hidden Valley Lake, CaliforniaThu, Mar 12, 7:17 PM PST · 14450 days ago · 5 km deep · 32 km away
14. 2.912 km ESE of Hidden Valley Lake, CaliforniaThu, Mar 12, 6:44 PM PST · 14450 days ago · 9 km deep · 33 km away
15. 2.26 km WSW of Cobb, CaliforniaThu, Mar 12, 8:16 AM PST · 14450 days ago · 3 km deep · 3 km away
16. 2.37 km W of Cobb, CaliforniaWed, Mar 11, 3:21 PM PST · 14451 days ago · 3 km deep · 2 km away
17. 1.67 km WNW of Geyserville, CaliforniaWed, Mar 11, 12:44 PM PST · 14451 days ago · 2 km deep · 18 km away
18. 2.416 km NE of Upper Lake, CaliforniaWed, Mar 11, 10:15 AM PST · 14451 days ago · 6 km deep · 51 km away
19. 1.67 km WSW of Cobb, CaliforniaWed, Mar 11, 4:40 AM PST · 14451 days ago · 1 km deep · 2 km away
20. 2.06 km SW of Cobb, CaliforniaTue, Mar 10, 9:03 PM PST · 14452 days ago · 1 km deep · 5 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc96787. Read Sat, Oct 3, 2026, 4:39 PM UTC.