California earthquakes

M1.8 earthquake 5 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 5 km WSW of Cobb, California on Tue, Apr 17, 1990, 3:33 AM PDT (10:33 UTC), 1 km (1 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
1990-04-17 10:33:11 UTC
Depth
1.1 km (0.7 mi), shallow
Epicenter
38.805° N, 122.781° 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
50°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 171 in the 60 days after this one and 84 in the 30 days before it.

After

  1. 2.25 km SSW of Cobb, California · 13319 days ago · 1 km deep · 4 km away
  2. 1.95 km SW of Cobb, California · 13319 days ago · 1 km deep · 2 km away
  3. 1.69 km WNW of Cobb, California · 13319 days ago · 2 km deep · 5 km away
  4. 1.69 km W of Cobb, California · 13318 days ago · 2 km deep · 5 km away
  5. 1.75 km SW of Cobb, California · 13318 days ago · 0 km deep · 2 km away
  6. 1.77 km NW of Cobb, California · 13318 days ago · 2 km deep · 7 km away
  7. 2.45 km WSW of Cobb, California · 13318 days ago · 1 km deep · 0 km away
  8. 1.75 km W of Cobb, California · 13317 days ago · 1 km deep · 1 km away
  9. 1.55 km WNW of Cobb, California · 13317 days ago · 0 km deep · 3 km away
  10. 1.65 km E of Willits, California · 13317 days ago · 5 km deep · 81 km away
  11. 2.25 km SW of Cobb, California · 13317 days ago · 0 km deep · 3 km away
  12. 2.47 km WSW of Cobb, California · 13317 days ago · 0 km deep · 2 km away
  13. 1.86 km NNW of Green Valley, California · 13316 days ago · 8 km deep · 76 km away
  14. 1.95 km E of Elk Creek, California · 13316 days ago · 42 km deep · 93 km away
  15. 1.77 km NNW of Green Valley, California · 13315 days ago · 9 km deep · 75 km away
  16. 2.114 km NNW of Moskowite Corner, California · 13315 days ago · 2 km deep · 52 km away
  17. 1.67 km W of Cobb, California · 13315 days ago · 4 km deep · 3 km away
  18. 1.86 km E of Santa Rosa, California · 13315 days ago · 8 km deep · 44 km away
  19. 1.86 km W of Cobb, California · 13314 days ago · 4 km deep · 3 km away
  20. 1.69 km W of Cobb, California · 13314 days ago · -1 km deep · 5 km away
  21. 1.513 km ESE of Hidden Valley Lake, California · 13314 days ago · 8 km deep · 32 km away
  22. 3.35 km W of Cobb, California · 13314 days ago · 1 km deep · 3 km away
  23. 2.56 km WSW of Cobb, California · 13314 days ago · 0 km deep · 1 km away
  24. 2.06 km W of Cobb, California · 13314 days ago · 2 km deep · 3 km away
  25. 1.66 km W of Cobb, California · 13314 days ago · 1 km deep · 2 km away
  26. 2.17 km WSW of Cobb, California · 13314 days ago · 2 km deep · 2 km away
  27. 2.212 km WSW of Hopland, California · 13314 days ago · -1 km deep · 43 km away
  28. 2.07 km W of Cobb, California · 13313 days ago · 0 km deep · 4 km away
  29. 1.67 km W of Cobb, California · 13313 days ago · 0 km deep · 3 km away
  30. 1.66 km W of Cobb, California · 13311 days ago · 1 km deep · 2 km away
  31. 2.38 km WNW of Cobb, California · 13311 days ago · 2 km deep · 5 km away
  32. 1.55 km SW of Cobb, California · 13311 days ago · 0 km deep · 2 km away
  33. 2.014 km SE of Hidden Valley Lake, California · 13311 days ago · 7 km deep · 31 km away
  34. 1.66 km W of Cobb, California · 13311 days ago · 3 km deep · 3 km away
  35. 1.76 km W of Cobb, California · 13311 days ago · 0 km deep · 3 km away
  36. 1.612 km ENE of Cloverdale, California · 13311 days ago · 1 km deep · 9 km away
  37. 1.521 km E of Potter Valley, California · 13310 days ago · 0 km deep · 62 km away
  38. 1.66 km SW of Kenwood, California · 13309 days ago · 6 km deep · 50 km away
  39. 1.88 km ENE of Potter Valley, California · 13309 days ago · 7 km deep · 63 km away
  40. 2.16 km SW of Cobb, California · 13309 days ago · 2 km deep · 2 km away
  41. 2.18 km W of Cobb, California · 13309 days ago · -1 km deep · 4 km away
  42. 1.57 km W of Cobb, California · 13309 days ago · -1 km deep · 3 km away
  43. 1.79 km W of Cobb, California · 13308 days ago · 1 km deep · 5 km away
  44. 1.68 km WSW of Cobb, California · 13308 days ago · 1 km deep · 3 km away
  45. 2.27 km WSW of Cobb, California · 13307 days ago · 1 km deep · 2 km away
  46. 1.95 km S of Moskowite Corner, California · 13307 days ago · 6 km deep · 69 km away
  47. 3.27 km WNW of Cobb, California · 13305 days ago · 1 km deep · 4 km away
  48. 2.06 km W of Cobb, California · 13305 days ago · 4 km deep · 3 km away
  49. 1.55 km SW of Cobb, California · 13305 days ago · 2 km deep · 2 km away
  50. 2.413 km NNE of Brooktrails, California · 13305 days ago · 9 km deep · 98 km away
  51. 1.77 km W of Cobb, California · 13304 days ago · 3 km deep · 3 km away
  52. 1.6Northern California · 13303 days ago · 0 km deep · 79 km away
  53. 1.73 km WSW of Cobb, California · 13303 days ago · 0 km deep · 2 km away
  54. 1.7Northern California · 13303 days ago · 3 km deep · 3 km away
  55. 2.46 km ESE of Roseland, California · 13301 days ago · 9 km deep · 46 km away
  56. 1.79 km W of Cobb, California · 13301 days ago · 1 km deep · 5 km away
  57. 2.04 km E of Lakeport, California · 13301 days ago · 11 km deep · 28 km away
  58. 2.22 km SSW of Fulton, California · 13301 days ago · 4 km deep · 36 km away
  59. 1.88 km W of Cobb, California · 13300 days ago · 1 km deep · 4 km away
  60. 1.88 km W of Cobb, California · 13300 days ago · 0 km deep · 4 km away

The first 60 of 171.

Before

  1. 1.95 km WSW of Cobb, California · 13319 days ago · 1 km deep · 0 km away
  2. 1.65 km WSW of Cobb, California · 13321 days ago · 1 km deep · 0 km away
  3. 3.14 km WSW of Cobb, California · 13321 days ago · 1 km deep · 1 km away
  4. 2.210 km NNE of Larkfield-Wikiup, California · 13322 days ago · 3 km deep · 24 km away
  5. 1.66 km W of Cobb, California · 13322 days ago · 1 km deep · 2 km away
  6. 2.0Northern California · 13322 days ago · 1 km deep · 2 km away
  7. 1.86 km WSW of Cobb, California · 13323 days ago · -1 km deep · 1 km away
  8. 1.79 km W of Cobb, California · 13324 days ago · 0 km deep · 4 km away
  9. 1.64 km ESE of Roseland, California · 13324 days ago · 7 km deep · 45 km away
  10. 1.66 km W of Cobb, California · 13324 days ago · 3 km deep · 3 km away
  11. 1.86 km SW of Cobb, California · 13325 days ago · 3 km deep · 2 km away
  12. 2.3near the coast of Northern California · 13326 days ago · 2 km deep · 79 km away
  13. 1.67 km W of Cobb, California · 13326 days ago · 3 km deep · 3 km away
  14. 1.65 km WSW of Cobb, California · 13327 days ago · 1 km deep · 0 km away
  15. 1.75 km ENE of Sonoma, California · 13327 days ago · 9 km deep · 65 km away
  16. 2.23 km NNE of Talmage, California · 13327 days ago · 6 km deep · 50 km away
  17. 1.62 km NE of Santa Rosa, California · 13327 days ago · 8 km deep · 39 km away
  18. 1.59 km W of Cobb, California · 13327 days ago · 1 km deep · 5 km away
  19. 2.24 km SW of Cobb, California · 13327 days ago · 1 km deep · 3 km away
  20. 1.710 km W of Cobb, California · 13327 days ago · 0 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc156228. Read Sun, Oct 4, 2026, 2:40 PM UTC.