M2.8 earthquake 7 km ENE of Willits, California

Magnitude

2.8 (md), micro

Local time

Tue, Mar 1, 1977, 1:32 AM PST

UTC

1977-03-01 09:32:43 UTC

Depth

-0.7 km (-0.5 mi), shallow

Epicenter

39.449° N, 123.278° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.8 km horizontally, 1.2 km in depth

Magnitude uncertainty

±0.13

Depth from

From location

Station coverage gap

253°, poorly surrounded by stations

Stations used

16

• Willits, CaliforniaPopulation 4,861. Forecast8 kmENE
• Ukiah, CaliforniaPopulation 15,917. Forecast34 kmN
• Santa Rosa, CaliforniaPopulation 178,127. Forecast122 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast749 kmNW

After

1. 2.622 km ENE of Potter Valley, CaliforniaTue, Mar 1, 10:29 PM PST · 18109 days ago · 8 km deep · 33 km away
2. 1.67 km W of Cobb, CaliforniaWed, Mar 2, 2:22 PM PST · 18109 days ago · 3 km deep · 81 km away
3. 2.18 km W of Cobb, CaliforniaThu, Mar 3, 10:57 PM PST · 18107 days ago · -1 km deep · 81 km away
4. 1.61 km SW of Geyserville, CaliforniaFri, Mar 4, 5:36 AM PST · 18107 days ago · 5 km deep · 89 km away
5. 1.61 km SW of Geyserville, CaliforniaFri, Mar 4, 9:06 AM PST · 18107 days ago · 2 km deep · 89 km away
6. 1.62 km SW of Geyserville, CaliforniaFri, Mar 4, 11:29 AM PST · 18107 days ago · 3 km deep · 89 km away
7. 1.54 km WSW of Cobb, CaliforniaSat, Mar 5, 4:04 AM PST · 18106 days ago · 1 km deep · 84 km away
8. 2.07 km W of Cobb, CaliforniaSun, Mar 6, 2:31 AM PST · 18105 days ago · 4 km deep · 81 km away
9. 2.13 km ESE of Cloverdale, CaliforniaSun, Mar 6, 3:33 PM PST · 18105 days ago · 6 km deep · 77 km away
10. 1.63 km ESE of Cloverdale, CaliforniaWed, Mar 9, 6:00 AM PST · 18102 days ago · 6 km deep · 77 km away
11. 2.38 km WSW of Cobb, CaliforniaThu, Mar 10, 5:13 AM PST · 18101 days ago · 0 km deep · 82 km away
12. 1.7Northern CaliforniaThu, Mar 10, 9:45 AM PST · 18101 days ago · 1 km deep · 82 km away
13. 1.62 km ESE of Boonville, CaliforniaFri, Mar 11, 12:18 AM PST · 18100 days ago · 5 km deep · 50 km away
14. 1.72 km SE of North Lakeport, CaliforniaFri, Mar 11, 9:41 PM PST · 18099 days ago · 1 km deep · 54 km away
15. 2.118 km NE of Nice, CaliforniaSun, Mar 13, 12:44 AM PST · 18098 days ago · 8 km deep · 55 km away
16. 2.910 km NNE of Brooktrails, CaliforniaTue, Mar 15, 12:40 PM PST · 18096 days ago · 3 km deep · 9 km away
17. 1.74 km WSW of Cobb, CaliforniaTue, Mar 15, 4:37 PM PST · 18096 days ago · 1 km deep · 84 km away
18. 1.74 km WSW of Cobb, CaliforniaTue, Mar 15, 4:58 PM PST · 18096 days ago · 1 km deep · 84 km away
19. 1.84 km WSW of Cobb, CaliforniaTue, Mar 15, 5:11 PM PST · 18096 days ago · 1 km deep · 84 km away
20. 1.96 km W of Cobb, CaliforniaFri, Mar 18, 9:14 AM PST · 18093 days ago · 3 km deep · 81 km away
21. 2.721 km NNE of Upper Lake, CaliforniaSat, Mar 19, 4:37 AM PST · 18092 days ago · 10 km deep · 45 km away
22. 1.96 km W of Cobb, CaliforniaSun, Mar 20, 11:46 PM PST · 18090 days ago · 2 km deep · 82 km away
23. 1.86 km W of Cobb, CaliforniaMon, Mar 21, 1:48 AM PST · 18090 days ago · 3 km deep · 81 km away
24. 1.75 km WSW of Cobb, CaliforniaMon, Mar 21, 2:39 PM PST · 18090 days ago · 4 km deep · 83 km away
25. 2.18 km WSW of Cobb, CaliforniaTue, Mar 22, 5:06 PM PST · 18089 days ago · 4 km deep · 83 km away
26. 2.421 km NNE of Upper Lake, CaliforniaWed, Mar 23, 12:39 PM PST · 18088 days ago · 8 km deep · 41 km away
27. 2.46 km W of Cobb, CaliforniaWed, Mar 23, 1:10 PM PST · 18088 days ago · 3 km deep · 81 km away
28. 1.68 km WSW of Cobb, CaliforniaThu, Mar 24, 7:23 PM PST · 18087 days ago · 3 km deep · 82 km away
29. 2.22 km ENE of Calpella, CaliforniaFri, Mar 25, 7:35 AM PST · 18086 days ago · 5 km deep · 25 km away
30. 2.32 km ESE of Boonville, CaliforniaSun, Mar 27, 11:01 AM PST · 18084 days ago · 8 km deep · 50 km away
31. 1.54 km WSW of Cobb, CaliforniaMon, Mar 28, 12:24 PM PST · 18083 days ago · 1 km deep · 84 km away
32. 1.77 km W of Cobb, CaliforniaMon, Mar 28, 2:43 PM PST · 18083 days ago · 1 km deep · 80 km away
33. 1.87 km ESE of Geyserville, CaliforniaTue, Mar 29, 4:28 AM PST · 18082 days ago · 6 km deep · 94 km away
34. 2.58 km W of Cobb, CaliforniaTue, Mar 29, 11:14 AM PST · 18082 days ago · 0 km deep · 81 km away
35. 3.026 km N of Potter Valley, CaliforniaSun, Apr 3, 2:20 AM PST · 18077 days ago · 11 km deep · 22 km away
36. 1.86 km W of Cobb, CaliforniaSun, Apr 3, 7:22 AM PST · 18077 days ago · 3 km deep · 81 km away
37. 1.66 km W of Cobb, CaliforniaWed, Apr 6, 8:40 AM PST · 18074 days ago · 3 km deep · 81 km away
38. 1.74 km WSW of Cobb, CaliforniaFri, Apr 8, 10:48 PM PST · 18071 days ago · 3 km deep · 83 km away
39. 2.37 km WSW of Cobb, CaliforniaSat, Apr 9, 2:08 PM PST · 18071 days ago · -1 km deep · 82 km away
40. 1.78 km WSW of Cobb, CaliforniaMon, Apr 11, 6:50 AM PST · 18069 days ago · 3 km deep · 83 km away
41. 2.38 km ESE of Hopland, CaliforniaWed, Apr 13, 9:08 AM PST · 18067 days ago · 7 km deep · 60 km away
42. 2.312 km SE of Alderpoint, CaliforniaSat, Apr 16, 3:35 AM PST · 18064 days ago · 26 km deep · 76 km away
43. 2.04 km WNW of Cobb, CaliforniaSat, Apr 16, 2:37 PM PST · 18064 days ago · 3 km deep · 81 km away
44. 2.53 km SW of Garberville, CaliforniaSat, Apr 16, 8:12 PM PST · 18064 days ago · 14 km deep · 85 km away
45. 1.53 km N of Healdsburg, CaliforniaMon, Apr 18, 7:32 PM PST · 18062 days ago · 5 km deep · 96 km away
46. 1.93 km ESE of Hopland, CaliforniaSat, Apr 23, 7:37 PM PST · 18057 days ago · 5 km deep · 57 km away
47. 2.56 km W of Cobb, CaliforniaMon, Apr 25, 7:25 PM PDT · 18055 days ago · 4 km deep · 81 km away
48. 1.94 km WSW of Cobb, CaliforniaTue, Apr 26, 7:35 AM PDT · 18054 days ago · 2 km deep · 84 km away

Before

1. 2.512 km E of Geyserville, CaliforniaSun, Feb 27, 11:17 AM PST · 18112 days ago · 8 km deep · 94 km away
2. 2.426 km ENE of Potter Valley, CaliforniaSun, Feb 27, 9:25 AM PST · 18112 days ago · 5 km deep · 36 km away
3. 2.46 km W of Cobb, CaliforniaSat, Feb 26, 8:06 AM PST · 18113 days ago · 0 km deep · 82 km away
4. 2.02 km ESE of Boonville, CaliforniaThu, Feb 24, 3:36 PM PST · 18115 days ago · 6 km deep · 50 km away
5. 2.22 km ESE of Boonville, CaliforniaThu, Feb 24, 3:23 PM PST · 18115 days ago · 7 km deep · 50 km away
6. 1.62 km ESE of Boonville, CaliforniaThu, Feb 24, 2:18 PM PST · 18115 days ago · 6 km deep · 51 km away
7. 1.52 km ESE of Boonville, CaliforniaThu, Feb 24, 1:10 PM PST · 18115 days ago · 8 km deep · 51 km away
8. 2.46 km W of Cobb, CaliforniaThu, Feb 24, 3:01 AM PST · 18115 days ago · 4 km deep · 81 km away
9. 2.17 km WSW of Cobb, CaliforniaWed, Feb 23, 4:39 AM PST · 18116 days ago · 4 km deep · 83 km away
10. 1.64 km WSW of Cobb, CaliforniaTue, Feb 22, 7:40 AM PST · 18117 days ago · 1 km deep · 84 km away
11. 3.28 km ESE of Willits, CaliforniaMon, Feb 21, 3:09 AM PST · 18118 days ago · 14 km deep · 7 km away
12. 2.16 km W of Cobb, CaliforniaFri, Feb 18, 3:54 AM PST · 18121 days ago · 3 km deep · 81 km away
13. 1.67 km W of Cobb, CaliforniaTue, Feb 15, 8:32 PM PST · 18124 days ago · 3 km deep · 81 km away
14. 2.2Northern CaliforniaMon, Feb 14, 8:09 PM PST · 18125 days ago · 3 km deep · 81 km away
15. 1.99 km WSW of Cobb, CaliforniaMon, Feb 14, 1:35 PM PST · 18125 days ago · 0 km deep · 81 km away
16. 1.88 km W of Cobb, CaliforniaSun, Feb 13, 8:04 AM PST · 18126 days ago · 0 km deep · 81 km away
17. 3.07 km WSW of Cobb, CaliforniaThu, Feb 10, 11:18 AM PST · 18129 days ago · 2 km deep · 83 km away
18. 2.44 km WSW of Cobb, CaliforniaWed, Feb 9, 8:38 PM PST · 18130 days ago · 1 km deep · 84 km away
19. 2.217 km NE of Nice, CaliforniaWed, Feb 9, 8:09 PM PST · 18130 days ago · 9 km deep · 54 km away
20. 2.27 km W of Cobb, CaliforniaWed, Feb 9, 5:39 PM PST · 18130 days ago · 3 km deep · 82 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1034208. Read Wed, Sep 30, 2026, 4:48 PM UTC.