California earthquakes

M1.8 earthquake 1 km SE of Occidental, California

A magnitude 1.8 earthquake struck 1 km SE of Occidental, California on Sat, Feb 20, 1982, 5:12 AM PST (13:12 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.4 7 km WSW of Cobb, California. This one was a foreshock.

Occidental 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
1982-02-20 13:12:19 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
38.398° N, 122.938° 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 0.5 km horizontally, 2.9 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
129°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 141 in the 60 days after this one and 51 in the 30 days before it.

After

  1. 2.47 km WSW of Cobb, California · 16285 days ago · 0 km deep · 47 km away
  2. 2.56 km WSW of Cobb, California · 16284 days ago · 1 km deep · 47 km away
  3. 1.65 km WSW of Glen Ellen, California · 16284 days ago · 7 km deep · 32 km away
  4. 1.56 km W of Cobb, California · 16284 days ago · 0 km deep · 48 km away
  5. 1.8Northern California · 16283 days ago · 5 km deep · 30 km away
  6. 1.66 km W of Cobb, California · 16281 days ago · 0 km deep · 48 km away
  7. 1.59 km WSW of Cobb, California · 16281 days ago · 1 km deep · 46 km away
  8. 1.67 km WSW of Cobb, California · 16281 days ago · 0 km deep · 47 km away
  9. 1.82 km NW of Muir Beach, California · 16280 days ago · 3 km deep · 65 km away
  10. 1.517 km NNE of Lucerne, California · 16279 days ago · 7 km deep · 94 km away
  11. 2.06 km W of Cobb, California · 16279 days ago · 3 km deep · 48 km away
  12. 1.66 km W of Cobb, California · 16279 days ago · 3 km deep · 48 km away
  13. 1.54 km SE of Clear Lake Riviera, California · 16279 days ago · 2 km deep · 63 km away
  14. 1.56 km WSW of Cobb, California · 16278 days ago · 3 km deep · 47 km away
  15. 1.68 km W of Middletown, California · 16278 days ago · 0 km deep · 43 km away
  16. 1.76 km W of Cobb, California · 16278 days ago · 3 km deep · 48 km away
  17. 2.39 km WSW of Cobb, California · 16277 days ago · 2 km deep · 46 km away
  18. 3.35 km SW of Cobb, California · 16277 days ago · 4 km deep · 46 km away
  19. 1.86 km SW of Cobb, California · 16277 days ago · 4 km deep · 45 km away
  20. 1.85 km SW of Cobb, California · 16277 days ago · 0 km deep · 46 km away
  21. 1.72 km NNE of Lakeport, California · 16277 days ago · 6 km deep · 74 km away
  22. 1.52 km SSE of North Lakeport, California · 16277 days ago · 8 km deep · 75 km away
  23. 2.06 km W of Cobb, California · 16277 days ago · 3 km deep · 47 km away
  24. 1.67 km WSW of Cobb, California · 16277 days ago · 1 km deep · 46 km away
  25. 1.99 km S of Muir Beach, California · 16276 days ago · 2 km deep · 76 km away
  26. 2.49 km WSW of Cobb, California · 16275 days ago · 1 km deep · 46 km away
  27. 1.64 km WSW of Cobb, California · 16274 days ago · 1 km deep · 47 km away
  28. 1.77 km W of Cobb, California · 16274 days ago · 2 km deep · 47 km away
  29. 2.10 km W of Concord, California · 16274 days ago · 15 km deep · 91 km away
  30. 3.26 km W of Cobb, California · 16273 days ago · 1 km deep · 48 km away
  31. 2.511 km W of Cobb, California · 16273 days ago · 7 km deep · 47 km away
  32. 2.1Northern California · 16273 days ago · 2 km deep · 46 km away
  33. 1.68 km NE of Clearlake, California · 16272 days ago · 3 km deep · 76 km away
  34. 1.65 km WSW of Cobb, California · 16272 days ago · 0 km deep · 46 km away
  35. 2.54 km ESE of Clear Lake Riviera, California · 16272 days ago · 3 km deep · 65 km away
  36. 1.95 km SW of Cobb, California · 16272 days ago · -1 km deep · 46 km away
  37. 2.34 km WSW of Cobb, California · 16271 days ago · 2 km deep · 47 km away
  38. 1.74 km WSW of Cobb, California · 16271 days ago · 0 km deep · 47 km away
  39. 1.94 km WSW of Cobb, California · 16271 days ago · 1 km deep · 47 km away
  40. 1.6Northern California · 16271 days ago · 0 km deep · 46 km away
  41. 2.28 km WSW of Cobb, California · 16270 days ago · 1 km deep · 46 km away
  42. 2.89 km WSW of Cobb, California · 16270 days ago · 2 km deep · 46 km away
  43. 2.08 km WSW of Cobb, California · 16270 days ago · 1 km deep · 46 km away
  44. 1.68 km W of Cobb, California · 16269 days ago · 2 km deep · 47 km away
  45. 1.86 km WSW of Cobb, California · 16267 days ago · 0 km deep · 46 km away
  46. 1.613 km ENE of Clearlake Oaks, California · 16266 days ago · -1 km deep · 84 km away
  47. 1.716 km NE of Upper Lake, California · 16266 days ago · 0 km deep · 98 km away
  48. 2.41 km E of Piedmont, California · 16265 days ago · 13 km deep · 90 km away
  49. 1.64 km W of Redwood Valley, California · 16265 days ago · 2 km deep · 100 km away
  50. 2.017 km NNE of Nice, California · 16264 days ago · 1 km deep · 97 km away
  51. 1.96 km WSW of Cobb, California · 16263 days ago · 3 km deep · 47 km away
  52. 1.76 km WSW of Cobb, California · 16263 days ago · -1 km deep · 46 km away
  53. 1.57 km WSW of Cobb, California · 16263 days ago · 2 km deep · 47 km away
  54. 2.2Northern California · 16263 days ago · 9 km deep · 93 km away
  55. 1.84 km E of Calpella, California · 16263 days ago · 4 km deep · 95 km away
  56. 2.16 km WSW of Cobb, California · 16262 days ago · 0 km deep · 46 km away
  57. 2.36 km ENE of Santa Rosa, California · 16262 days ago · 6 km deep · 26 km away
  58. 1.87 km W of Cobb, California · 16261 days ago · 2 km deep · 47 km away
  59. 1.68 km W of Cobb, California · 16261 days ago · 1 km deep · 49 km away
  60. 1.53 km SSE of Talmage, California · 16260 days ago · 3 km deep · 80 km away

The first 60 of 141.

Before

  1. 2.05 km N of Windsor, California · 16287 days ago · 7 km deep · 24 km away
  2. 1.95 km S of Calistoga, California · 16287 days ago · 2 km deep · 34 km away
  3. 1.74 km WSW of Cobb, California · 16288 days ago · 1 km deep · 47 km away
  4. 1.65 km SE of Santa Rosa, California · 16288 days ago · 8 km deep · 24 km away
  5. 1.56 km W of Cobb, California · 16288 days ago · 3 km deep · 49 km away
  6. 2.28 km WSW of Cobb, California · 16290 days ago · 3 km deep · 45 km away
  7. 3.17 km WSW of Cobb, California · 16290 days ago · 3 km deep · 47 km away
  8. 2.48 km W of Cobb, California · 16291 days ago · 1 km deep · 49 km away
  9. 2.58 km WSW of Cobb, California · 16292 days ago · 2 km deep · 46 km away
  10. 2.49 km WSW of Cobb, California · 16292 days ago · 2 km deep · 46 km away
  11. 1.68 km N of Pittsburg, California · 16293 days ago · 19 km deep · 98 km away
  12. 1.87 km WSW of Cobb, California · 16293 days ago · 1 km deep · 47 km away
  13. 1.67 km WSW of Cobb, California · 16293 days ago · 1 km deep · 47 km away
  14. 1.68 km WSW of Cobb, California · 16294 days ago · 1 km deep · 46 km away
  15. 1.79 km WSW of Cobb, California · 16294 days ago · 2 km deep · 46 km away
  16. 2.36 km WSW of Cobb, California · 16294 days ago · -1 km deep · 47 km away
  17. 1.87 km W of Cobb, California · 16295 days ago · -1 km deep · 48 km away
  18. 1.68 km WSW of Cobb, California · 16295 days ago · 1 km deep · 47 km away
  19. 1.95 km SW of Cobb, California · 16295 days ago · 0 km deep · 46 km away
  20. 1.80 km SE of Concord, California · 16296 days ago · 9 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1072309. Read Wed, Sep 23, 2026, 1:00 AM UTC.