California earthquakes

M1.8 earthquake 2 km NNW of Glen Ellen, California

A magnitude 1.8 earthquake struck 2 km NNW of Glen Ellen, California on Mon, Aug 9, 1982, 5:59 AM PDT (12:59 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.8 12 km E of Blackhawk, California. This one was a foreshock.

Glen Ellen 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
1982-08-09 12:59:25 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
38.385° N, 122.538° 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 0.8 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
176°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 89 in the 60 days after this one and 78 in the 30 days before it.

After

  1. 1.92 km NW of Glen Ellen, California · 16123 days ago · 9 km deep · 1 km away
  2. 2.26 km W of Cobb, California · 16122 days ago · 3 km deep · 53 km away
  3. 2.812 km WSW of Byron, California · 16122 days ago · 16 km deep · 91 km away
  4. 2.44 km SW of Green Valley, California · 16119 days ago · 12 km deep · 35 km away
  5. 1.54 km NNE of Vine Hill, California · 16119 days ago · 16 km deep · 55 km away
  6. 1.83 km SE of Clear Lake Riviera, California · 16119 days ago · -1 km deep · 63 km away
  7. 1.86 km WSW of Cobb, California · 16117 days ago · 0 km deep · 51 km away
  8. 2.70 km SE of Concord, California · 16115 days ago · 14 km deep · 64 km away
  9. 1.77 km WSW of Cobb, California · 16115 days ago · 1 km deep · 52 km away
  10. 1.72 km SW of Dublin, California · 16114 days ago · 9 km deep · 93 km away
  11. 1.71 km S of Concord, California · 16114 days ago · 11 km deep · 65 km away
  12. 1.912 km WSW of Byron, California · 16114 days ago · 15 km deep · 92 km away
  13. 1.60 km SSE of Concord, California · 16114 days ago · 11 km deep · 64 km away
  14. 2.76 km WSW of Cobb, California · 16114 days ago · 3 km deep · 52 km away
  15. 3.31 km SW of Dublin, California · 16113 days ago · 10 km deep · 93 km away
  16. 1.80 km SSE of Concord, California · 16113 days ago · 13 km deep · 64 km away
  17. 2.10 km W of Lakeport, California · 16112 days ago · 19 km deep · 80 km away
  18. 2.92 km SW of Lakeport, California · 16112 days ago · 17 km deep · 79 km away
  19. 3.32 km SSW of Dublin, California · 16111 days ago · 10 km deep · 94 km away
  20. 2.49 km WSW of Cobb, California · 16111 days ago · 2 km deep · 53 km away
  21. 1.66 km W of Cobb, California · 16109 days ago · 3 km deep · 54 km away
  22. 1.92 km NNW of Kensington, California · 16109 days ago · 9 km deep · 55 km away
  23. 2.35 km WSW of Cobb, California · 16109 days ago · 1 km deep · 50 km away
  24. 2.11 km ENE of Clear Lake Riviera, California · 16108 days ago · 2 km deep · 66 km away
  25. 1.86 km W of Cobb, California · 16107 days ago · 3 km deep · 54 km away
  26. 1.88 km NE of Hopland, California · 16107 days ago · 5 km deep · 85 km away
  27. 1.91 km N of Orinda, California · 16107 days ago · 6 km deep · 63 km away
  28. 1.618 km NE of Clearlake, California · 16107 days ago · 21 km deep · 74 km away
  29. 1.710 km E of Blackhawk, California · 16105 days ago · 10 km deep · 90 km away
  30. 3.812 km E of Blackhawk, California · 16105 days ago · 15 km deep · 90 km away
  31. 2.311 km E of Blackhawk, California · 16105 days ago · 11 km deep · 91 km away
  32. 2.611 km E of Blackhawk, California · 16105 days ago · 14 km deep · 90 km away
  33. 1.610 km E of Blackhawk, California · 16104 days ago · 10 km deep · 90 km away
  34. 1.810 km E of Blackhawk, California · 16104 days ago · 10 km deep · 90 km away
  35. 2.28 km NE of Hopland, California · 16104 days ago · 5 km deep · 85 km away
  36. 1.55 km NNE of Kenwood, California · 16104 days ago · 5 km deep · 8 km away
  37. 1.65 km WSW of Green Valley, California · 16102 days ago · 5 km deep · 32 km away
  38. 2.31 km SSE of Concord, California · 16101 days ago · 12 km deep · 65 km away
  39. 1.70 km N of Pittsburg, California · 16101 days ago · 16 km deep · 69 km away
  40. 2.018 km WSW of Lodoga, California · 16100 days ago · 10 km deep · 94 km away
  41. 1.74 km SSE of Kelseyville, California · 16100 days ago · -1 km deep · 66 km away
  42. 1.94 km WSW of Cobb, California · 16100 days ago · 0 km deep · 51 km away
  43. 1.63 km ESE of Lakeport, California · 16099 days ago · 8 km deep · 77 km away
  44. 1.717 km E of Lower Lake, California · 16096 days ago · 2 km deep · 62 km away
  45. 2.30 km SE of Concord, California · 16095 days ago · 7 km deep · 64 km away
  46. 1.710 km ENE of Blackhawk, California · 16095 days ago · 12 km deep · 89 km away
  47. 1.64 km SW of Saint Helena, California · 16094 days ago · 5 km deep · 10 km away
  48. 1.96 km WNW of Cobb, California · 16094 days ago · 1 km deep · 55 km away
  49. 1.811 km NW of Moskowite Corner, California · 16094 days ago · -1 km deep · 27 km away
  50. 2.36 km W of Cobb, California · 16093 days ago · 3 km deep · 53 km away
  51. 1.66 km W of Cobb, California · 16093 days ago · 3 km deep · 53 km away
  52. 1.69 km SW of Clear Lake Riviera, California · 16090 days ago · -1 km deep · 60 km away
  53. 2.23 km WSW of Clayton, California · 16090 days ago · 13 km deep · 71 km away
  54. 2.210 km SW of Arbuckle, California · 16089 days ago · 7 km deep · 71 km away
  55. 1.910 km SW of Arbuckle, California · 16089 days ago · 4 km deep · 71 km away
  56. 1.912 km WSW of Hopland, California · 16088 days ago · 6 km deep · 86 km away
  57. 1.66 km W of Cobb, California · 16088 days ago · 2 km deep · 53 km away
  58. 1.913 km WSW of Arbuckle, California · 16088 days ago · 5 km deep · 70 km away
  59. 2.77 km W of Cobb, California · 16085 days ago · 1 km deep · 54 km away
  60. 1.82 km SE of Larkfield-Wikiup, California · 16085 days ago · 5 km deep · 21 km away

The first 60 of 89.

Before

  1. 2.02 km NW of Glen Ellen, California · 16123 days ago · 8 km deep · 1 km away
  2. 1.83 km WNW of Daly City, California · 16124 days ago · 5 km deep · 74 km away
  3. 2.76 km W of Cobb, California · 16125 days ago · 4 km deep · 53 km away
  4. 2.71 km NW of Rollingwood, California · 16125 days ago · 7 km deep · 49 km away
  5. 1.9Northern California · 16125 days ago · 3 km deep · 67 km away
  6. 1.65 km SW of Cobb, California · 16126 days ago · 0 km deep · 49 km away
  7. 2.35 km SW of Cobb, California · 16126 days ago · 1 km deep · 49 km away
  8. 1.75 km SW of Cobb, California · 16126 days ago · -1 km deep · 49 km away
  9. 1.85 km SW of Cobb, California · 16126 days ago · 0 km deep · 49 km away
  10. 2.45 km SW of Cobb, California · 16126 days ago · -1 km deep · 49 km away
  11. 1.66 km SW of Cobb, California · 16126 days ago · 2 km deep · 49 km away
  12. 2.86 km W of Cobb, California · 16127 days ago · 3 km deep · 53 km away
  13. 1.68 km WSW of Cobb, California · 16127 days ago · 3 km deep · 52 km away
  14. 1.83 km SSE of Clear Lake Riviera, California · 16127 days ago · 1 km deep · 61 km away
  15. 1.85 km SE of Clear Lake Riviera, California · 16127 days ago · 4 km deep · 61 km away
  16. 1.64 km SE of Clear Lake Riviera, California · 16128 days ago · 2 km deep · 61 km away
  17. 1.94 km SE of Clear Lake Riviera, California · 16128 days ago · 2 km deep · 61 km away
  18. 2.14 km SE of Clear Lake Riviera, California · 16128 days ago · 2 km deep · 61 km away
  19. 2.44 km SE of Clear Lake Riviera, California · 16128 days ago · 1 km deep · 61 km away
  20. 1.84 km SSE of Clear Lake Riviera, California · 16128 days ago · 0 km deep · 61 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1077166. Read Wed, Sep 30, 2026, 10:17 PM UTC.