California earthquakes

M2.1 earthquake 18 km NE of Nice, California

A magnitude 2.1 earthquake struck 18 km NE of Nice, California on Sun, Mar 13, 1977, 12:44 AM PST (08:44 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.3 3 km W of Moskowite Corner, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.1 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1977-03-13 08:44:57 UTC
Depth
7.8 km (4.9 mi), shallow
Epicenter
39.236° N, 122.698° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.3 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
213°, poorly surrounded by stations
Stations used
11

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 44 in the 60 days after this one and 39 in the 30 days before it.

After

  1. 2.910 km NNE of Brooktrails, California · 18098 days ago · 3 km deep · 62 km away
  2. 1.74 km WSW of Cobb, California · 18097 days ago · 1 km deep · 48 km away
  3. 1.74 km WSW of Cobb, California · 18097 days ago · 1 km deep · 48 km away
  4. 1.84 km WSW of Cobb, California · 18097 days ago · 1 km deep · 48 km away
  5. 1.98 km W of Saint Helena, California · 18095 days ago · 7 km deep · 83 km away
  6. 1.96 km W of Cobb, California · 18095 days ago · 3 km deep · 47 km away
  7. 2.721 km NNE of Upper Lake, California · 18094 days ago · 10 km deep · 12 km away
  8. 2.40 km WSW of Larkfield-Wikiup, California · 18094 days ago · 2 km deep · 80 km away
  9. 1.96 km W of Cobb, California · 18092 days ago · 2 km deep · 48 km away
  10. 1.86 km W of Cobb, California · 18092 days ago · 3 km deep · 47 km away
  11. 1.75 km WSW of Cobb, California · 18091 days ago · 4 km deep · 48 km away
  12. 2.18 km WSW of Cobb, California · 18090 days ago · 4 km deep · 50 km away
  13. 2.06 km S of Calistoga, California · 18090 days ago · 5 km deep · 80 km away
  14. 2.421 km NNE of Upper Lake, California · 18090 days ago · 8 km deep · 16 km away
  15. 2.46 km W of Cobb, California · 18090 days ago · 3 km deep · 47 km away
  16. 1.68 km WSW of Cobb, California · 18088 days ago · 3 km deep · 49 km away
  17. 2.22 km ENE of Calpella, California · 18088 days ago · 5 km deep · 41 km away
  18. 3.33 km W of Moskowite Corner, California · 18087 days ago · 7 km deep · 97 km away
  19. 2.95 km NNE of Penngrove, California · 18086 days ago · 7 km deep · 99 km away
  20. 2.32 km ESE of Boonville, California · 18086 days ago · 8 km deep · 61 km away
  21. 2.42 km ESE of Princeton, California · 18085 days ago · 22 km deep · 64 km away
  22. 1.54 km WSW of Cobb, California · 18085 days ago · 1 km deep · 49 km away
  23. 1.77 km W of Cobb, California · 18084 days ago · 1 km deep · 47 km away
  24. 2.13 km ENE of Windsor, California · 18084 days ago · 5 km deep · 75 km away
  25. 1.87 km ESE of Geyserville, California · 18084 days ago · 6 km deep · 63 km away
  26. 2.58 km W of Cobb, California · 18084 days ago · 0 km deep · 49 km away
  27. 3.026 km N of Potter Valley, California · 18079 days ago · 11 km deep · 48 km away
  28. 1.86 km W of Cobb, California · 18079 days ago · 3 km deep · 47 km away
  29. 1.66 km W of Cobb, California · 18076 days ago · 3 km deep · 47 km away
  30. 1.97 km WSW of Kenwood, California · 18074 days ago · 9 km deep · 94 km away
  31. 2.07 km WSW of Kenwood, California · 18074 days ago · 10 km deep · 94 km away
  32. 1.74 km WSW of Cobb, California · 18073 days ago · 3 km deep · 48 km away
  33. 2.37 km WSW of Cobb, California · 18072 days ago · -1 km deep · 49 km away
  34. 1.78 km WSW of Cobb, California · 18071 days ago · 3 km deep · 50 km away
  35. 2.38 km ESE of Hopland, California · 18069 days ago · 7 km deep · 43 km away
  36. 2.04 km WNW of Cobb, California · 18065 days ago · 3 km deep · 46 km away
  37. 1.53 km N of Healdsburg, California · 18063 days ago · 5 km deep · 68 km away
  38. 1.93 km ESE of Hopland, California · 18058 days ago · 5 km deep · 45 km away
  39. 2.56 km W of Cobb, California · 18056 days ago · 4 km deep · 47 km away
  40. 1.94 km WSW of Cobb, California · 18056 days ago · 2 km deep · 48 km away
  41. 1.64 km WSW of Cobb, California · 18051 days ago · 1 km deep · 48 km away
  42. 1.62 km SE of Clear Lake Riviera, California · 18050 days ago · 1 km deep · 33 km away
  43. 1.84 km WSW of Cobb, California · 18050 days ago · 1 km deep · 48 km away
  44. 1.61 km NNW of Geyserville, California · 18045 days ago · 5 km deep · 60 km away

Before

  1. 1.72 km SE of North Lakeport, California · 18101 days ago · 1 km deep · 24 km away
  2. 1.62 km ESE of Boonville, California · 18102 days ago · 5 km deep · 61 km away
  3. 1.7Northern California · 18103 days ago · 1 km deep · 49 km away
  4. 2.38 km WSW of Cobb, California · 18103 days ago · 0 km deep · 49 km away
  5. 1.63 km ESE of Cloverdale, California · 18104 days ago · 6 km deep · 54 km away
  6. 2.13 km ESE of Cloverdale, California · 18106 days ago · 6 km deep · 54 km away
  7. 2.43 km NNE of Santa Rosa, California · 18107 days ago · 8 km deep · 85 km away
  8. 2.07 km W of Cobb, California · 18107 days ago · 4 km deep · 48 km away
  9. 1.54 km WSW of Cobb, California · 18108 days ago · 1 km deep · 48 km away
  10. 2.711 km ESE of Hidden Valley Lake, California · 18108 days ago · 6 km deep · 57 km away
  11. 1.62 km SW of Geyserville, California · 18109 days ago · 3 km deep · 63 km away
  12. 1.61 km SW of Geyserville, California · 18109 days ago · 2 km deep · 63 km away
  13. 1.61 km SW of Geyserville, California · 18109 days ago · 5 km deep · 63 km away
  14. 2.18 km W of Cobb, California · 18109 days ago · -1 km deep · 48 km away
  15. 1.67 km W of Cobb, California · 18110 days ago · 3 km deep · 48 km away
  16. 2.622 km ENE of Potter Valley, California · 18111 days ago · 8 km deep · 28 km away
  17. 2.87 km ENE of Willits, California · 18112 days ago · -1 km deep · 55 km away
  18. 2.512 km E of Geyserville, California · 18114 days ago · 8 km deep · 59 km away
  19. 2.426 km ENE of Potter Valley, California · 18114 days ago · 5 km deep · 28 km away
  20. 2.46 km W of Cobb, California · 18115 days ago · 0 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1034351. Read Fri, Oct 2, 2026, 9:16 AM UTC.