California earthquakes

M1.8 earthquake 5 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 5 km WSW of Cobb, California on Wed, Feb 21, 1990, 6:04 PM PST (02:04 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.7 5 km WNW of Cobb, California. This one was a foreshock.

Cobb 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-02-22 02:04:33 UTC
Depth
1.6 km (1.0 mi), shallow
Epicenter
38.812° N, 122.780° 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 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
59°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 177 in the 60 days after this one and 91 in the 30 days before it.

After

  1. 1.56 km SW of Cobb, California · 13374 days ago · -1 km deep · 3 km away
  2. 1.66 km SW of Cobb, California · 13374 days ago · -1 km deep · 3 km away
  3. 1.66 km WSW of Cobb, California · 13374 days ago · 0 km deep · 2 km away
  4. 1.67 km WSW of Cobb, California · 13373 days ago · 1 km deep · 2 km away
  5. 1.86 km SW of Cobb, California · 13373 days ago · 0 km deep · 3 km away
  6. 1.77 km ESE of Geyserville, California · 13373 days ago · 6 km deep · 15 km away
  7. 1.66 km SW of Cobb, California · 13372 days ago · 1 km deep · 3 km away
  8. 2.2Northern California · 13371 days ago · -1 km deep · 3 km away
  9. 1.86 km W of Cobb, California · 13371 days ago · 1 km deep · 3 km away
  10. 1.85 km WSW of Cobb, California · 13371 days ago · 1 km deep · 1 km away
  11. 1.75 km SW of Cobb, California · 13371 days ago · 2 km deep · 2 km away
  12. 1.79 km W of Cobb, California · 13370 days ago · 0 km deep · 4 km away
  13. 2.36 km SW of Cobb, California · 13370 days ago · 2 km deep · 2 km away
  14. 1.67 km WSW of Cobb, California · 13370 days ago · 1 km deep · 3 km away
  15. 1.86 km SW of Cobb, California · 13370 days ago · 0 km deep · 4 km away
  16. 1.811 km WNW of Calistoga, California · 13369 days ago · 45 km deep · 21 km away
  17. 2.25 km WSW of Cobb, California · 13369 days ago · 0 km deep · 1 km away
  18. 2.07 km ENE of Rohnert Park, California · 13369 days ago · 3 km deep · 52 km away
  19. 1.97 km W of Cobb, California · 13369 days ago · 0 km deep · 3 km away
  20. 2.27 km W of Cobb, California · 13369 days ago · 0 km deep · 3 km away
  21. 1.76 km W of Cobb, California · 13369 days ago · 2 km deep · 3 km away
  22. 2.17 km W of Cobb, California · 13369 days ago · 0 km deep · 4 km away
  23. 2.26 km ENE of Rohnert Park, California · 13368 days ago · 6 km deep · 52 km away
  24. 1.64 km ENE of Willits, California · 13368 days ago · 6 km deep · 82 km away
  25. 1.99 km WNW of Cobb, California · 13368 days ago · 2 km deep · 5 km away
  26. 1.66 km WSW of Cobb, California · 13368 days ago · 2 km deep · 2 km away
  27. 1.624 km NE of Potter Valley, California · 13367 days ago · 10 km deep · 78 km away
  28. 1.54 km W of Cobb, California · 13366 days ago · 1 km deep · 1 km away
  29. 1.87 km WSW of Cobb, California · 13366 days ago · 1 km deep · 2 km away
  30. 1.84 km W of Cobb, California · 13366 days ago · 0 km deep · 1 km away
  31. 1.94 km W of Cobb, California · 13366 days ago · 1 km deep · 1 km away
  32. 2.04 km SE of Larkfield-Wikiup, California · 13366 days ago · 6 km deep · 37 km away
  33. 1.67 km S of Cobb, California · 13365 days ago · -1 km deep · 8 km away
  34. 2.27 km WSW of Cobb, California · 13365 days ago · 1 km deep · 3 km away
  35. 2.03 km SSW of Cobb, California · 13365 days ago · 2 km deep · 4 km away
  36. 1.73 km SSW of Cobb, California · 13365 days ago · 1 km deep · 4 km away
  37. 1.75 km W of Cobb, California · 13364 days ago · 1 km deep · 2 km away
  38. 1.55 km WSW of Cobb, California · 13364 days ago · 1 km deep · 1 km away
  39. 2.17 km WSW of Cobb, California · 13364 days ago · 1 km deep · 2 km away
  40. 2.214 km SE of Hidden Valley Lake, California · 13364 days ago · 9 km deep · 32 km away
  41. 1.614 km SE of Hidden Valley Lake, California · 13364 days ago · 9 km deep · 33 km away
  42. 1.78 km W of Cobb, California · 13363 days ago · 1 km deep · 4 km away
  43. 1.66 km SW of Cobb, California · 13363 days ago · 1 km deep · 3 km away
  44. 1.55 km WSW of Cobb, California · 13363 days ago · 1 km deep · 1 km away
  45. 2.07 km WNW of Cobb, California · 13362 days ago · 0 km deep · 4 km away
  46. 2.14 km WSW of Cobb, California · 13361 days ago · 1 km deep · 1 km away
  47. 1.84 km WSW of Moskowite Corner, California · 13361 days ago · 3 km deep · 64 km away
  48. 1.84 km W of Cobb, California · 13361 days ago · 1 km deep · 2 km away
  49. 1.510 km ESE of Hidden Valley Lake, California · 13361 days ago · 7 km deep · 29 km away
  50. 1.73 km SW of Cobb, California · 13360 days ago · 1 km deep · 3 km away
  51. 1.85 km SW of Eldridge, California · 13360 days ago · 3 km deep · 58 km away
  52. 1.66 km W of Cobb, California · 13360 days ago · 0 km deep · 2 km away
  53. 1.60 km SSE of Calpella, California · 13360 days ago · 4 km deep · 59 km away
  54. 1.522 km NNE of Upper Lake, California · 13359 days ago · 7 km deep · 61 km away
  55. 1.91 km N of Calpella, California · 13358 days ago · 7 km deep · 61 km away
  56. 1.68 km W of Cobb, California · 13358 days ago · 1 km deep · 5 km away
  57. 2.05 km W of Cobb, California · 13358 days ago · 0 km deep · 1 km away
  58. 2.89 km W of Cobb, California · 13357 days ago · 0 km deep · 4 km away
  59. 1.65 km WSW of Glen Ellen, California · 13357 days ago · 8 km deep · 56 km away
  60. 1.87 km W of Cobb, California · 13357 days ago · 1 km deep · 3 km away

The first 60 of 177.

Before

  1. 2.65 km WSW of Cobb, California · 13374 days ago · 2 km deep · 0 km away
  2. 1.98 km W of Cobb, California · 13374 days ago · 1 km deep · 5 km away
  3. 1.96 km SW of Cobb, California · 13374 days ago · 2 km deep · 2 km away
  4. 1.513 km ENE of Healdsburg, California · 13375 days ago · 6 km deep · 17 km away
  5. 2.05 km W of Cobb, California · 13376 days ago · 0 km deep · 1 km away
  6. 1.65 km SSW of Cobb, California · 13376 days ago · 0 km deep · 5 km away
  7. 1.87 km ENE of Brooktrails, California · 13376 days ago · 6 km deep · 87 km away
  8. 3.2near the coast of Northern California · 13376 days ago · 1 km deep · 38 km away
  9. 1.68 km W of Cobb, California · 13377 days ago · 0 km deep · 4 km away
  10. 1.99 km NNE of Hopland, California · 13377 days ago · 5 km deep · 35 km away
  11. 1.51 km ESE of Larkfield-Wikiup, California · 13378 days ago · 4 km deep · 34 km away
  12. 1.83 km SSW of Cobb, California · 13378 days ago · 2 km deep · 4 km away
  13. 2.63 km SSW of Cobb, California · 13378 days ago · 1 km deep · 4 km away
  14. 1.79 km W of Cobb, California · 13378 days ago · 1 km deep · 4 km away
  15. 1.79 km W of Cobb, California · 13378 days ago · 0 km deep · 4 km away
  16. 1.77 km SW of Kenwood, California · 13378 days ago · 4 km deep · 51 km away
  17. 1.53 km SW of Cobb, California · 13378 days ago · 1 km deep · 3 km away
  18. 1.75 km W of Cobb, California · 13379 days ago · 1 km deep · 1 km away
  19. 2.69 km ENE of Hidden Valley Lake, California · 13379 days ago · 9 km deep · 29 km away
  20. 1.76 km SW of Cobb, California · 13379 days ago · 3 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc152858. Read Sun, Oct 4, 2026, 9:03 PM UTC.