M1.6 earthquake 5 km SW of Cobb, California

Magnitude

1.6 (md), micro

Local time

Tue, Jun 4, 1985, 3:06 PM PDT

UTC

1985-06-04 22:06:43 UTC

Depth

0.9 km (0.6 mi), shallow

Epicenter

38.784° N, 122.756° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.15

Depth from

From location

Station coverage gap

52°

Stations used

18

• Cobb, CaliforniaPopulation 1,778. Forecast5 kmSW
• Healdsburg, CaliforniaPopulation 11,742. Forecast22 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast38 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast663 kmNW

After

1. 2.07 km NNE of Arbuckle, CaliforniaThu, Jun 6, 4:14 PM PDT · 15083 days ago · 8 km deep · 71 km away
2. 1.65 km NE of College City, CaliforniaThu, Jun 6, 6:30 PM PDT · 15083 days ago · 4 km deep · 74 km away
3. 1.79 km NW of Cobb, CaliforniaThu, Jun 6, 8:38 PM PDT · 15083 days ago · 1 km deep · 11 km away
4. 2.09 km ESE of Williams, CaliforniaFri, Jun 7, 11:57 AM PDT · 15082 days ago · 5 km deep · 73 km away
5. 2.26 km W of Cobb, CaliforniaFri, Jun 7, 12:28 PM PDT · 15082 days ago · 2 km deep · 5 km away
6. 1.66 km W of Cobb, CaliforniaFri, Jun 7, 12:28 PM PDT · 15082 days ago · 2 km deep · 5 km away
7. 1.66 km W of Cobb, CaliforniaFri, Jun 7, 6:43 PM PDT · 15082 days ago · 0 km deep · 6 km away
8. 1.98 km W of Cobb, CaliforniaFri, Jun 7, 9:47 PM PDT · 15082 days ago · 0 km deep · 7 km away
9. 1.910 km N of Arbuckle, CaliforniaSat, Jun 8, 8:07 AM PDT · 15081 days ago · 7 km deep · 72 km away
10. 1.56 km W of Cobb, CaliforniaSun, Jun 9, 1:16 AM PDT · 15080 days ago · 3 km deep · 6 km away
11. 1.85 km SW of Cobb, CaliforniaSun, Jun 9, 12:41 PM PDT · 15080 days ago · 0 km deep · 1 km away
12. 1.75 km SW of Cobb, CaliforniaMon, Jun 10, 1:11 PM PDT · 15079 days ago · 1 km deep · 2 km away
13. 1.67 km WSW of Cobb, CaliforniaMon, Jun 10, 5:37 PM PDT · 15079 days ago · 1 km deep · 5 km away
14. 1.89 km WSW of Ukiah, CaliforniaTue, Jun 11, 9:25 AM PDT · 15078 days ago · 4 km deep · 62 km away
15. 1.65 km W of Cobb, CaliforniaTue, Jun 11, 1:10 PM PDT · 15078 days ago · 1 km deep · 5 km away
16. 1.66 km W of Cobb, CaliforniaTue, Jun 11, 9:24 PM PDT · 15078 days ago · 2 km deep · 5 km away
17. 1.67 km NNE of Hopland, CaliforniaTue, Jun 11, 11:46 PM PDT · 15077 days ago · 0 km deep · 40 km away
18. 2.3Northern CaliforniaWed, Jun 12, 8:38 AM PDT · 15077 days ago · 5 km deep · 47 km away
19. 3.16 km W of Cobb, CaliforniaWed, Jun 12, 6:53 PM PDT · 15077 days ago · 1 km deep · 5 km away
20. 1.56 km W of Cobb, CaliforniaWed, Jun 12, 7:14 PM PDT · 15077 days ago · 1 km deep · 5 km away
21. 2.2Northern CaliforniaWed, Jun 12, 10:34 PM PDT · 15077 days ago · 18 km deep · 73 km away
22. 1.76 km WSW of Colusa, CaliforniaThu, Jun 13, 6:46 PM PDT · 15076 days ago · 13 km deep · 74 km away
23. 1.68 km SW of Clear Lake Riviera, CaliforniaThu, Jun 13, 9:41 PM PDT · 15076 days ago · 2 km deep · 12 km away
24. 1.99 km W of Redwood Valley, CaliforniaThu, Jun 13, 10:38 PM PDT · 15076 days ago · 7 km deep · 73 km away
25. 2.218 km WSW of Esparto, CaliforniaFri, Jun 14, 1:37 AM PDT · 15075 days ago · 6 km deep · 50 km away
26. 1.87 km W of Cobb, CaliforniaFri, Jun 14, 5:37 PM PDT · 15075 days ago · 1 km deep · 6 km away
27. 1.67 km W of Cobb, CaliforniaFri, Jun 14, 9:19 PM PDT · 15075 days ago · 1 km deep · 6 km away
28. 2.46 km W of Cobb, CaliforniaSat, Jun 15, 12:16 AM PDT · 15074 days ago · 3 km deep · 6 km away
29. 1.66 km W of Cobb, CaliforniaSat, Jun 15, 6:37 AM PDT · 15074 days ago · 3 km deep · 5 km away
30. 1.612 km ENE of Healdsburg, CaliforniaSat, Jun 15, 9:35 AM PDT · 15074 days ago · 4 km deep · 15 km away
31. 2.76 km E of Williams, CaliforniaSat, Jun 15, 9:11 PM PDT · 15074 days ago · 17 km deep · 73 km away
32. 1.511 km E of Hidden Valley Lake, CaliforniaSun, Jun 16, 12:22 AM PDT · 15073 days ago · 8 km deep · 28 km away
33. 2.17 km SSW of Colusa, CaliforniaSun, Jun 16, 3:23 AM PDT · 15073 days ago · 3 km deep · 75 km away
34. 1.88 km WSW of Cobb, CaliforniaSun, Jun 16, 5:39 AM PDT · 15073 days ago · 3 km deep · 5 km away
35. 1.86 km NE of Williams, CaliforniaSun, Jun 16, 7:04 AM PDT · 15073 days ago · 18 km deep · 73 km away
36. 1.89 km WSW of Cobb, CaliforniaSun, Jun 16, 12:30 PM PDT · 15073 days ago · 2 km deep · 6 km away
37. 2.14 km ENE of Williams, CaliforniaMon, Jun 17, 2:32 AM PDT · 15072 days ago · 21 km deep · 71 km away
38. 2.19 km ENE of Brooktrails, CaliforniaMon, Jun 17, 3:21 AM PDT · 15072 days ago · 10 km deep · 91 km away
39. 1.77 km W of Cobb, CaliforniaMon, Jun 17, 5:43 AM PDT · 15072 days ago · 0 km deep · 7 km away
40. 1.57 km W of Cobb, CaliforniaMon, Jun 17, 8:07 AM PDT · 15072 days ago · 1 km deep · 7 km away
41. 2.3Northern CaliforniaMon, Jun 17, 8:52 AM PDT · 15072 days ago · 4 km deep · 52 km away
42. 2.76 km W of Cobb, CaliforniaMon, Jun 17, 8:07 PM PDT · 15072 days ago · 3 km deep · 6 km away
43. 2.19 km NNE of Arbuckle, CaliforniaTue, Jun 18, 12:41 AM PDT · 15071 days ago · 13 km deep · 73 km away
44. 1.912 km NW of Moskowite Corner, CaliforniaTue, Jun 18, 2:38 AM PDT · 15071 days ago · 10 km deep · 50 km away
45. 1.67 km W of Cobb, CaliforniaTue, Jun 18, 6:18 AM PDT · 15071 days ago · 1 km deep · 6 km away
46. 1.63 km SW of Cobb, CaliforniaWed, Jun 19, 9:27 AM PDT · 15070 days ago · 1 km deep · 1 km away
47. 2.510 km WSW of Cobb, CaliforniaWed, Jun 19, 5:51 PM PDT · 15070 days ago · 2 km deep · 7 km away
48. 2.87 km W of Cobb, CaliforniaWed, Jun 19, 7:36 PM PDT · 15070 days ago · 4 km deep · 6 km away
49. 1.66 km W of Cobb, CaliforniaThu, Jun 20, 1:12 PM PDT · 15069 days ago · 0 km deep · 6 km away
50. 1.76 km SW of Cobb, CaliforniaThu, Jun 20, 1:17 PM PDT · 15069 days ago · 4 km deep · 2 km away
51. 2.96 km W of Cobb, CaliforniaThu, Jun 20, 6:58 PM PDT · 15069 days ago · 1 km deep · 6 km away
52. 1.75 km WSW of Cobb, CaliforniaThu, Jun 20, 9:00 PM PDT · 15069 days ago · 2 km deep · 3 km away
53. 2.613 km ENE of Cloverdale, CaliforniaFri, Jun 21, 11:18 AM PDT · 15068 days ago · 4 km deep · 12 km away
54. 1.53 km ENE of Williams, CaliforniaFri, Jun 21, 12:07 PM PDT · 15068 days ago · 14 km deep · 70 km away
55. 1.97 km W of Cobb, CaliforniaFri, Jun 21, 6:41 PM PDT · 15068 days ago · 1 km deep · 6 km away
56. 2.617 km N of Upper Lake, CaliforniaSat, Jun 22, 12:15 AM PDT · 15067 days ago · 11 km deep · 61 km away
57. 1.97 km W of Cobb, CaliforniaSat, Jun 22, 4:37 AM PDT · 15067 days ago · 3 km deep · 6 km away
58. 1.64 km W of Cobb, CaliforniaSat, Jun 22, 8:24 AM PDT · 15067 days ago · 1 km deep · 4 km away
59. 2.05 km NNE of Williams, CaliforniaSat, Jun 22, 7:22 PM PDT · 15067 days ago · 16 km deep · 71 km away
60. 2.67 km W of Cobb, CaliforniaSat, Jun 22, 8:43 PM PDT · 15067 days ago · 3 km deep · 6 km away

The first 60 of 179.

From the USGS Earthquake Hazards Program and its partner networks, event nc48990. Read Tue, Sep 22, 2026, 5:14 PM UTC.