California earthquakes

M2.0 earthquake 15 km NNE of Angwin, California

A magnitude 2.0 earthquake struck 15 km NNE of Angwin, California on Wed, Mar 21, 1979, 5:11 AM PST (13:11 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.0 6 km W of Cobb, California. This one was a foreshock.

Angwin forecastMore in California

Map

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

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The earthquake

Magnitude
2.0 (md), micro
Local time
UTC
1979-03-21 13:11:35 UTC
Depth
10.8 km (6.7 mi), shallow
Epicenter
38.700° N, 122.379° 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 0.3 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
129°
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 62 in the 60 days after this one and 30 in the 30 days before it.

After

  1. 1.614 km NNE of Angwin, California · 17358 days ago · 4 km deep · 1 km away
  2. 1.99 km SSE of Hopland, California · 17358 days ago · 5 km deep · 64 km away
  3. 1.74 km WSW of Cobb, California · 17358 days ago · 1 km deep · 36 km away
  4. 1.96 km N of Cloverdale, California · 17357 days ago · 6 km deep · 58 km away
  5. 2.06 km N of Cloverdale, California · 17357 days ago · 5 km deep · 58 km away
  6. 2.2Northern California · 17357 days ago · -1 km deep · 22 km away
  7. 1.916 km WSW of Guinda, California · 17357 days ago · 5 km deep · 8 km away
  8. 2.44 km SE of North Gate, California · 17356 days ago · 12 km deep · 98 km away
  9. 1.65 km ESE of Clearlake Oaks, California · 17355 days ago · 2 km deep · 40 km away
  10. 2.16 km W of Cobb, California · 17355 days ago · 4 km deep · 39 km away
  11. 1.85 km SE of Santa Rosa, California · 17355 days ago · 10 km deep · 41 km away
  12. 1.98 km NNE of Hopland, California · 17355 days ago · 2 km deep · 72 km away
  13. 1.88 km NNE of Hopland, California · 17355 days ago · 0 km deep · 73 km away
  14. 2.319 km NE of Upper Lake, California · 17354 days ago · 8 km deep · 76 km away
  15. 1.70 km NNE of Larkfield-Wikiup, California · 17351 days ago · 4 km deep · 38 km away
  16. 1.58 km WSW of Cobb, California · 17351 days ago · 4 km deep · 39 km away
  17. 1.65 km ENE of Lucerne, California · 17349 days ago · 8 km deep · 55 km away
  18. 1.53 km ESE of Calpella, California · 17347 days ago · 5 km deep · 89 km away
  19. 1.75 km NE of Nice, California · 17347 days ago · 9 km deep · 64 km away
  20. 2.13 km ESE of Calpella, California · 17346 days ago · 6 km deep · 90 km away
  21. 2.17 km SSE of Potter Valley, California · 17346 days ago · 41 km deep · 87 km away
  22. 1.53 km ESE of Calpella, California · 17346 days ago · 6 km deep · 90 km away
  23. 1.65 km SSW of Woodland, California · 17346 days ago · 6 km deep · 50 km away
  24. 1.64 km SSE of Hopland, California · 17345 days ago · 7 km deep · 68 km away
  25. 2.03 km ESE of Talmage, California · 17345 days ago · 3 km deep · 80 km away
  26. 1.95 km WSW of Cobb, California · 17344 days ago · 0 km deep · 37 km away
  27. 1.55 km WSW of Cobb, California · 17344 days ago · 0 km deep · 37 km away
  28. 2.46 km ENE of Vallejo, California · 17339 days ago · 0 km deep · 67 km away
  29. 1.66 km WSW of Cobb, California · 17336 days ago · 0 km deep · 38 km away
  30. 2.68 km WSW of Cobb, California · 17334 days ago · 4 km deep · 39 km away
  31. 1.58 km WSW of Cobb, California · 17333 days ago · 4 km deep · 39 km away
  32. 1.95 km ESE of Clearlake Oaks, California · 17333 days ago · 2 km deep · 40 km away
  33. 2.06 km WSW of Cobb, California · 17333 days ago · 4 km deep · 38 km away
  34. 1.710 km NW of Moskowite Corner, California · 17333 days ago · 5 km deep · 22 km away
  35. 1.84 km ENE of Saint Helena, California · 17332 days ago · 10 km deep · 21 km away
  36. 1.71 km NW of Concord, California · 17331 days ago · 15 km deep · 85 km away
  37. 2.57 km WSW of Cobb, California · 17329 days ago · 3 km deep · 39 km away
  38. 1.610 km SE of Boonville, California · 17324 days ago · 1 km deep · 84 km away
  39. 2.03 km W of Antioch, California · 17323 days ago · 17 km deep · 90 km away
  40. 2.16 km WSW of Calistoga, California · 17323 days ago · 5 km deep · 28 km away
  41. 2.10 km N of Hopland, California · 17322 days ago · 7 km deep · 71 km away
  42. 2.46 km W of Cobb, California · 17320 days ago · 1 km deep · 39 km away
  43. 1.99 km W of Cobb, California · 17318 days ago · 1 km deep · 41 km away
  44. 3.06 km W of Cobb, California · 17317 days ago · 1 km deep · 39 km away
  45. 1.95 km NW of Acalanes Ridge, California · 17313 days ago · 16 km deep · 88 km away
  46. 2.0Northern California · 17313 days ago · 9 km deep · 94 km away
  47. 2.0Northern California · 17313 days ago · 9 km deep · 94 km away
  48. 1.8Northern California · 17313 days ago · 9 km deep · 94 km away
  49. 1.82 km WSW of Lafayette, California · 17313 days ago · 10 km deep · 94 km away
  50. 1.56 km WSW of Cobb, California · 17313 days ago · 1 km deep · 38 km away
  51. 1.94 km WSW of Guinda, California · 17312 days ago · 43 km deep · 17 km away
  52. 1.610 km E of Hidden Valley Lake, California · 17309 days ago · 10 km deep · 12 km away
  53. 1.64 km WSW of Cobb, California · 17307 days ago · 1 km deep · 36 km away
  54. 1.65 km WSW of Cobb, California · 17307 days ago · 0 km deep · 37 km away
  55. 2.22 km NNE of Deer Park, California · 17307 days ago · 11 km deep · 18 km away
  56. 2.33 km WSW of Cobb, California · 17305 days ago · 2 km deep · 35 km away
  57. 1.87 km W of Cobb, California · 17303 days ago · 1 km deep · 39 km away
  58. 1.72 km ENE of Berkeley, California · 17302 days ago · 9 km deep · 92 km away
  59. 2.27 km W of Cobb, California · 17302 days ago · 3 km deep · 39 km away
  60. 2.28 km WSW of Cobb, California · 17299 days ago · 1 km deep · 40 km away

The first 60 of 62.

Before

  1. 2.86 km W of Cobb, California · 17361 days ago · 3 km deep · 39 km away
  2. 2.16 km WSW of Cobb, California · 17361 days ago · 1 km deep · 38 km away
  3. 2.31 km NW of Pleasant Hill, California · 17361 days ago · 9 km deep · 87 km away
  4. 1.813 km E of Hidden Valley Lake, California · 17361 days ago · 8 km deep · 12 km away
  5. 2.13 km ESE of Calpella, California · 17362 days ago · 6 km deep · 89 km away
  6. 2.17 km W of Cobb, California · 17362 days ago · 3 km deep · 39 km away
  7. 2.04 km WSW of Cobb, California · 17363 days ago · 4 km deep · 36 km away
  8. 1.916 km E of Potter Valley, California · 17363 days ago · 2 km deep · 85 km away
  9. 2.315 km E of Angwin, California · 17364 days ago · 2 km deep · 16 km away
  10. 1.55 km SSE of Moskowite Corner, California · 17365 days ago · 5 km deep · 38 km away
  11. 2.38 km ENE of Lower Lake, California · 17366 days ago · 9 km deep · 28 km away
  12. 2.14 km WSW of Cobb, California · 17366 days ago · 1 km deep · 36 km away
  13. 1.711 km E of Lower Lake, California · 17366 days ago · 15 km deep · 27 km away
  14. 2.617 km NNE of Nice, California · 17368 days ago · 4 km deep · 69 km away
  15. 2.816 km NNE of Nice, California · 17370 days ago · 7 km deep · 69 km away
  16. 2.68 km WSW of Cobb, California · 17370 days ago · 3 km deep · 39 km away
  17. 1.86 km WSW of Cobb, California · 17371 days ago · 1 km deep · 38 km away
  18. 2.42 km ESE of Calpella, California · 17372 days ago · 6 km deep · 90 km away
  19. 1.87 km W of Cobb, California · 17374 days ago · 0 km deep · 40 km away
  20. 2.32 km SSW of Monument Hills, California · 17375 days ago · 9 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1045087. Read Tue, Sep 29, 2026, 1:21 AM UTC.