California earthquakes

M1.8 earthquake 11 km NE of Angwin, California

A magnitude 1.8 earthquake struck 11 km NE of Angwin, California on Sun, Nov 13, 1977, 12:24 PM PST (20:24 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M1.8 4 km ESE of Clear Lake Riviera, 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
1.8 (md), micro
Local time
UTC
1977-11-13 20:24:45 UTC
Depth
10.2 km (6.3 mi), shallow
Epicenter
38.636° N, 122.348° 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 0.7 km horizontally, 4.8 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
180°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 82 in the 60 days after this one and 42 in the 30 days before it.

After

  1. 1.84 km ESE of Clear Lake Riviera, California · 17846 days ago · 5 km deep · 44 km away
  2. 1.91 km NW of Larkfield-Wikiup, California · 17843 days ago · 2 km deep · 38 km away
  3. 2.47 km W of Cobb, California · 17842 days ago · 3 km deep · 45 km away
  4. 1.90 km ESE of Clear Lake Riviera, California · 17842 days ago · 1 km deep · 47 km away
  5. 2.56 km W of Cobb, California · 17841 days ago · 3 km deep · 45 km away
  6. 1.810 km SE of Boonville, California · 17841 days ago · 5 km deep · 87 km away
  7. 1.62 km NW of Cobb, California · 17839 days ago · 1 km deep · 41 km away
  8. 2.24 km WSW of Moskowite Corner, California · 17836 days ago · 8 km deep · 25 km away
  9. 1.76 km W of Cobb, California · 17833 days ago · 4 km deep · 44 km away
  10. 2.04 km WSW of Granite Bay, California · 17832 days ago · 12 km deep · 99 km away
  11. 2.110 km ENE of Healdsburg, California · 17832 days ago · 5 km deep · 36 km away
  12. 3.28 km WSW of Cobb, California · 17831 days ago · 1 km deep · 45 km away
  13. 2.68 km WSW of Cobb, California · 17831 days ago · 0 km deep · 45 km away
  14. 2.19 km WSW of Cobb, California · 17831 days ago · 1 km deep · 45 km away
  15. 1.66 km ENE of Santa Rosa, California · 17830 days ago · 6 km deep · 33 km away
  16. 2.29 km WSW of Cobb, California · 17830 days ago · 0 km deep · 45 km away
  17. 1.7Northern California · 17829 days ago · 7 km deep · 37 km away
  18. 2.0Northern California · 17829 days ago · 5 km deep · 37 km away
  19. 1.911 km ESE of Suisun, California · 17829 days ago · 7 km deep · 62 km away
  20. 1.68 km W of Saint Helena, California · 17826 days ago · 6 km deep · 25 km away
  21. 2.17 km SW of Calistoga, California · 17826 days ago · 6 km deep · 28 km away
  22. 1.57 km W of Cobb, California · 17826 days ago · 3 km deep · 45 km away
  23. 3.010 km NE of Healdsburg, California · 17826 days ago · 6 km deep · 37 km away
  24. 1.710 km NE of Healdsburg, California · 17825 days ago · 5 km deep · 37 km away
  25. 1.71 km NNE of East Richmond Heights, California · 17825 days ago · 9 km deep · 75 km away
  26. 1.61 km NNW of Pleasant Hill, California · 17824 days ago · 9 km deep · 79 km away
  27. 1.74 km NNE of San Leandro, California · 17823 days ago · 5 km deep · 99 km away
  28. 2.63 km ENE of Berkeley, California · 17821 days ago · 10 km deep · 85 km away
  29. 1.72 km ENE of Berkeley, California · 17821 days ago · 8 km deep · 84 km away
  30. 1.53 km SSE of Rocklin, California · 17821 days ago · 13 km deep · 99 km away
  31. 2.97 km WSW of Cobb, California · 17818 days ago · 1 km deep · 43 km away
  32. 1.97 km W of Cobb, California · 17818 days ago · 3 km deep · 45 km away
  33. 1.88 km WSW of Cobb, California · 17817 days ago · 0 km deep · 44 km away
  34. 2.26 km WNW of Napa, California · 17816 days ago · 6 km deep · 35 km away
  35. 2.010 km W of North Lakeport, California · 17816 days ago · 5 km deep · 78 km away
  36. 2.216 km NE of Nice, California · 17816 days ago · 9 km deep · 73 km away
  37. 2.38 km WSW of Cobb, California · 17814 days ago · 3 km deep · 44 km away
  38. 1.76 km WSW of Cobb, California · 17813 days ago · -1 km deep · 43 km away
  39. 2.37 km ENE of Vallejo, California · 17813 days ago · 0 km deep · 59 km away
  40. 2.37 km WSW of Cobb, California · 17812 days ago · 4 km deep · 44 km away
  41. 1.712 km NNE of Angwin, California · 17811 days ago · 10 km deep · 8 km away
  42. 1.96 km W of Cobb, California · 17811 days ago · 3 km deep · 43 km away
  43. 1.97 km W of Cobb, California · 17811 days ago · 3 km deep · 44 km away
  44. 2.315 km NNE of Nice, California · 17811 days ago · 11 km deep · 76 km away
  45. 2.04 km WSW of Cobb, California · 17809 days ago · 1 km deep · 41 km away
  46. 2.41 km NW of Concord, California · 17809 days ago · 16 km deep · 77 km away
  47. 2.66 km W of Cobb, California · 17809 days ago · -1 km deep · 44 km away
  48. 1.57 km WSW of Cobb, California · 17809 days ago · 0 km deep · 44 km away
  49. 1.66 km W of Cobb, California · 17809 days ago · 3 km deep · 44 km away
  50. 1.80 km E of Larkfield-Wikiup, California · 17808 days ago · 2 km deep · 37 km away
  51. 2.12 km SSW of Dunnigan, California · 17805 days ago · 10 km deep · 41 km away
  52. 2.64 km W of Dunnigan, California · 17805 days ago · 12 km deep · 40 km away
  53. 2.57 km WSW of Cobb, California · 17804 days ago · 4 km deep · 44 km away
  54. 2.46 km E of Geyserville, California · 17804 days ago · 4 km deep · 43 km away
  55. 2.19 km W of Cobb, California · 17802 days ago · 1 km deep · 47 km away
  56. 2.19 km W of Cobb, California · 17802 days ago · 1 km deep · 47 km away
  57. 1.69 km W of Cobb, California · 17802 days ago · 1 km deep · 47 km away
  58. 1.77 km WSW of Cobb, California · 17802 days ago · -1 km deep · 44 km away
  59. 1.710 km ESE of Hidden Valley Lake, California · 17802 days ago · 8 km deep · 18 km away
  60. 1.99 km ESE of Hidden Valley Lake, California · 17802 days ago · 19 km deep · 19 km away

The first 60 of 82.

Before

  1. 2.56 km W of Cobb, California · 17846 days ago · -1 km deep · 44 km away
  2. 1.51 km NE of Diablo, California · 17846 days ago · 6 km deep · 95 km away
  3. 1.68 km W of Cobb, California · 17847 days ago · 1 km deep · 45 km away
  4. 2.07 km WSW of Cobb, California · 17848 days ago · 0 km deep · 44 km away
  5. 2.57 km W of Cobb, California · 17848 days ago · 3 km deep · 45 km away
  6. 2.27 km W of Cobb, California · 17848 days ago · 3 km deep · 45 km away
  7. 1.610 km ENE of Healdsburg, California · 17848 days ago · 6 km deep · 36 km away
  8. 3.019 km WSW of Stonyford, California · 17849 days ago · 15 km deep · 79 km away
  9. 1.66 km W of Cobb, California · 17850 days ago · 3 km deep · 44 km away
  10. 3.19 km SSW of Willows, California · 17851 days ago · 19 km deep · 90 km away
  11. 2.46 km WSW of Cobb, California · 17852 days ago · 0 km deep · 43 km away
  12. 2.411 km NE of Healdsburg, California · 17852 days ago · 4 km deep · 37 km away
  13. 2.111 km NE of Healdsburg, California · 17852 days ago · 3 km deep · 37 km away
  14. 1.711 km NE of Healdsburg, California · 17852 days ago · 5 km deep · 37 km away
  15. 2.511 km NE of Healdsburg, California · 17852 days ago · 5 km deep · 37 km away
  16. 2.411 km NE of Healdsburg, California · 17852 days ago · 5 km deep · 37 km away
  17. 2.611 km NE of Healdsburg, California · 17852 days ago · 5 km deep · 37 km away
  18. 2.03 km WNW of Emeryville, California · 17853 days ago · 12 km deep · 88 km away
  19. 2.05 km NE of Ukiah, California · 17855 days ago · 0 km deep · 94 km away
  20. 2.36 km W of Cobb, California · 17856 days ago · -1 km deep · 44 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1037701. Read Wed, Sep 23, 2026, 2:06 PM UTC.