California earthquakes

M1.8 earthquake 6 km W of Cobb, California

A magnitude 1.8 earthquake struck 6 km W of Cobb, California on Sun, Apr 22, 1990, 12:10 AM PDT (07:10 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.6 4 km W 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
1990-04-22 07:10:32 UTC
Depth
3.8 km (2.3 mi), shallow
Epicenter
38.823° N, 122.801° 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, 0.5 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
52°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 166 in the 60 days after this one and 87 in the 30 days before it.

After

  1. 1.69 km W of Cobb, California · 13314 days ago · -1 km deep · 3 km away
  2. 1.513 km ESE of Hidden Valley Lake, California · 13314 days ago · 8 km deep · 34 km away
  3. 3.35 km W of Cobb, California · 13314 days ago · 1 km deep · 1 km away
  4. 2.56 km WSW of Cobb, California · 13314 days ago · 0 km deep · 2 km away
  5. 2.06 km W of Cobb, California · 13314 days ago · 2 km deep · 0 km away
  6. 1.66 km W of Cobb, California · 13314 days ago · 1 km deep · 1 km away
  7. 2.17 km WSW of Cobb, California · 13314 days ago · 2 km deep · 3 km away
  8. 2.212 km WSW of Hopland, California · 13314 days ago · -1 km deep · 41 km away
  9. 2.07 km W of Cobb, California · 13313 days ago · 0 km deep · 2 km away
  10. 1.67 km W of Cobb, California · 13313 days ago · 0 km deep · 1 km away
  11. 1.66 km W of Cobb, California · 13312 days ago · 1 km deep · 1 km away
  12. 2.38 km WNW of Cobb, California · 13312 days ago · 2 km deep · 3 km away
  13. 1.55 km SW of Cobb, California · 13311 days ago · 0 km deep · 4 km away
  14. 2.014 km SE of Hidden Valley Lake, California · 13311 days ago · 7 km deep · 34 km away
  15. 1.66 km W of Cobb, California · 13311 days ago · 3 km deep · 0 km away
  16. 1.76 km W of Cobb, California · 13311 days ago · 0 km deep · 0 km away
  17. 1.612 km ENE of Cloverdale, California · 13311 days ago · 1 km deep · 7 km away
  18. 1.521 km E of Potter Valley, California · 13310 days ago · 0 km deep · 60 km away
  19. 1.66 km SW of Kenwood, California · 13309 days ago · 6 km deep · 53 km away
  20. 1.88 km ENE of Potter Valley, California · 13309 days ago · 7 km deep · 61 km away
  21. 2.16 km SW of Cobb, California · 13309 days ago · 2 km deep · 4 km away
  22. 2.18 km W of Cobb, California · 13309 days ago · -1 km deep · 1 km away
  23. 1.57 km W of Cobb, California · 13309 days ago · -1 km deep · 1 km away
  24. 1.79 km W of Cobb, California · 13308 days ago · 1 km deep · 3 km away
  25. 1.68 km WSW of Cobb, California · 13308 days ago · 1 km deep · 3 km away
  26. 2.27 km WSW of Cobb, California · 13307 days ago · 1 km deep · 2 km away
  27. 1.95 km S of Moskowite Corner, California · 13307 days ago · 6 km deep · 72 km away
  28. 3.27 km WNW of Cobb, California · 13305 days ago · 1 km deep · 2 km away
  29. 2.06 km W of Cobb, California · 13305 days ago · 4 km deep · 0 km away
  30. 1.55 km SW of Cobb, California · 13305 days ago · 2 km deep · 5 km away
  31. 2.413 km NNE of Brooktrails, California · 13305 days ago · 9 km deep · 95 km away
  32. 1.77 km W of Cobb, California · 13304 days ago · 3 km deep · 1 km away
  33. 1.6Northern California · 13303 days ago · 0 km deep · 81 km away
  34. 1.73 km WSW of Cobb, California · 13303 days ago · 0 km deep · 4 km away
  35. 1.7Northern California · 13303 days ago · 3 km deep · 0 km away
  36. 2.46 km ESE of Roseland, California · 13301 days ago · 9 km deep · 49 km away
  37. 1.79 km W of Cobb, California · 13301 days ago · 1 km deep · 3 km away
  38. 2.04 km E of Lakeport, California · 13301 days ago · 11 km deep · 26 km away
  39. 2.22 km SSW of Fulton, California · 13301 days ago · 4 km deep · 38 km away
  40. 1.88 km W of Cobb, California · 13301 days ago · 1 km deep · 2 km away
  41. 1.88 km W of Cobb, California · 13301 days ago · 0 km deep · 2 km away
  42. 1.721 km E of Potter Valley, California · 13300 days ago · 3 km deep · 60 km away
  43. 1.78 km W of Cobb, California · 13299 days ago · 4 km deep · 2 km away
  44. 2.18 km W of Cobb, California · 13298 days ago · 1 km deep · 2 km away
  45. 1.65 km SSW of Calistoga, California · 13297 days ago · 4 km deep · 36 km away
  46. 1.82 km NE of Lower Lake, California · 13296 days ago · 6 km deep · 21 km away
  47. 1.87 km W of Cobb, California · 13295 days ago · 3 km deep · 0 km away
  48. 1.84 km ESE of Roseland, California · 13295 days ago · 7 km deep · 48 km away
  49. 1.54 km ESE of Roseland, California · 13295 days ago · 7 km deep · 47 km away
  50. 1.67 km W of Cobb, California · 13294 days ago · 4 km deep · 1 km away
  51. 1.618 km NE of Upper Lake, California · 13294 days ago · 9 km deep · 52 km away
  52. 1.618 km NE of Upper Lake, California · 13294 days ago · 9 km deep · 52 km away
  53. 1.77 km W of Cobb, California · 13294 days ago · 4 km deep · 1 km away
  54. 2.09 km WSW of Cobb, California · 13293 days ago · 2 km deep · 3 km away
  55. 1.89 km W of Cobb, California · 13293 days ago · 1 km deep · 3 km away
  56. 1.56 km W of Cobb, California · 13293 days ago · 2 km deep · 1 km away
  57. 1.67 km W of Cobb, California · 13293 days ago · 3 km deep · 0 km away
  58. 1.69 km WNW of Cobb, California · 13292 days ago · 2 km deep · 3 km away
  59. 2.69 km W of Cobb, California · 13292 days ago · 0 km deep · 3 km away
  60. 2.19 km W of Cobb, California · 13292 days ago · 0 km deep · 2 km away

The first 60 of 166.

Before

  1. 1.86 km E of Santa Rosa, California · 13315 days ago · 8 km deep · 46 km away
  2. 1.67 km W of Cobb, California · 13315 days ago · 4 km deep · 1 km away
  3. 2.114 km NNW of Moskowite Corner, California · 13315 days ago · 2 km deep · 55 km away
  4. 1.77 km NNW of Green Valley, California · 13315 days ago · 9 km deep · 77 km away
  5. 1.95 km E of Elk Creek, California · 13316 days ago · 42 km deep · 91 km away
  6. 1.86 km NNW of Green Valley, California · 13316 days ago · 8 km deep · 79 km away
  7. 2.47 km WSW of Cobb, California · 13317 days ago · 0 km deep · 2 km away
  8. 2.25 km SW of Cobb, California · 13317 days ago · 0 km deep · 6 km away
  9. 1.65 km E of Willits, California · 13317 days ago · 5 km deep · 78 km away
  10. 1.55 km WNW of Cobb, California · 13317 days ago · 0 km deep · 2 km away
  11. 1.75 km W of Cobb, California · 13318 days ago · 1 km deep · 1 km away
  12. 2.45 km WSW of Cobb, California · 13318 days ago · 1 km deep · 2 km away
  13. 1.77 km NW of Cobb, California · 13318 days ago · 2 km deep · 4 km away
  14. 1.75 km SW of Cobb, California · 13318 days ago · 0 km deep · 4 km away
  15. 1.69 km W of Cobb, California · 13318 days ago · 2 km deep · 3 km away
  16. 1.69 km WNW of Cobb, California · 13319 days ago · 2 km deep · 3 km away
  17. 1.95 km SW of Cobb, California · 13319 days ago · 1 km deep · 5 km away
  18. 2.25 km SSW of Cobb, California · 13319 days ago · 1 km deep · 7 km away
  19. 1.85 km WSW of Cobb, California · 13319 days ago · 1 km deep · 3 km away
  20. 1.95 km WSW of Cobb, California · 13319 days ago · 1 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc156396. Read Sun, Oct 4, 2026, 3:20 PM UTC.