California earthquakes

M1.5 earthquake 9 km W of Cobb, California

A magnitude 1.5 earthquake struck 9 km W of Cobb, California on Mon, Apr 9, 1990, 5:31 AM PDT (12:31 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.5 8 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
1.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-04-09 12:31:57 UTC
Depth
0.9 km (0.5 mi), shallow
Epicenter
38.827° N, 122.829° 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 0.4 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
90°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 167 in the 60 days after this one and 102 in the 30 days before it.

After

  1. 1.62 km NE of Santa Rosa, California · 13327 days ago · 8 km deep · 43 km away
  2. 2.23 km NNE of Talmage, California · 13327 days ago · 6 km deep · 46 km away
  3. 1.75 km ENE of Sonoma, California · 13327 days ago · 9 km deep · 69 km away
  4. 1.65 km WSW of Cobb, California · 13327 days ago · 1 km deep · 5 km away
  5. 1.67 km W of Cobb, California · 13326 days ago · 3 km deep · 2 km away
  6. 2.3near the coast of Northern California · 13326 days ago · 2 km deep · 74 km away
  7. 1.86 km SW of Cobb, California · 13325 days ago · 3 km deep · 6 km away
  8. 1.66 km W of Cobb, California · 13324 days ago · 3 km deep · 2 km away
  9. 1.64 km ESE of Roseland, California · 13324 days ago · 7 km deep · 49 km away
  10. 1.79 km W of Cobb, California · 13324 days ago · 0 km deep · 2 km away
  11. 1.86 km WSW of Cobb, California · 13323 days ago · -1 km deep · 4 km away
  12. 2.0Northern California · 13322 days ago · 1 km deep · 4 km away
  13. 1.66 km W of Cobb, California · 13322 days ago · 1 km deep · 3 km away
  14. 2.210 km NNE of Larkfield-Wikiup, California · 13322 days ago · 3 km deep · 28 km away
  15. 3.14 km WSW of Cobb, California · 13321 days ago · 1 km deep · 6 km away
  16. 1.65 km WSW of Cobb, California · 13321 days ago · 1 km deep · 5 km away
  17. 1.95 km WSW of Cobb, California · 13319 days ago · 1 km deep · 5 km away
  18. 1.85 km WSW of Cobb, California · 13319 days ago · 1 km deep · 5 km away
  19. 2.25 km SSW of Cobb, California · 13319 days ago · 1 km deep · 9 km away
  20. 1.95 km SW of Cobb, California · 13319 days ago · 1 km deep · 6 km away
  21. 1.69 km WNW of Cobb, California · 13319 days ago · 2 km deep · 1 km away
  22. 1.69 km W of Cobb, California · 13318 days ago · 2 km deep · 1 km away
  23. 1.75 km SW of Cobb, California · 13318 days ago · 0 km deep · 6 km away
  24. 1.77 km NW of Cobb, California · 13318 days ago · 2 km deep · 5 km away
  25. 2.45 km WSW of Cobb, California · 13318 days ago · 1 km deep · 5 km away
  26. 1.75 km W of Cobb, California · 13317 days ago · 1 km deep · 4 km away
  27. 1.55 km WNW of Cobb, California · 13317 days ago · 0 km deep · 4 km away
  28. 1.65 km E of Willits, California · 13317 days ago · 5 km deep · 77 km away
  29. 2.25 km SW of Cobb, California · 13317 days ago · 0 km deep · 8 km away
  30. 2.47 km WSW of Cobb, California · 13317 days ago · 0 km deep · 3 km away
  31. 1.86 km NNW of Green Valley, California · 13316 days ago · 8 km deep · 81 km away
  32. 1.95 km E of Elk Creek, California · 13316 days ago · 42 km deep · 91 km away
  33. 1.77 km NNW of Green Valley, California · 13315 days ago · 9 km deep · 79 km away
  34. 2.114 km NNW of Moskowite Corner, California · 13315 days ago · 2 km deep · 57 km away
  35. 1.67 km W of Cobb, California · 13315 days ago · 4 km deep · 2 km away
  36. 1.86 km E of Santa Rosa, California · 13315 days ago · 8 km deep · 47 km away
  37. 1.86 km W of Cobb, California · 13314 days ago · 4 km deep · 2 km away
  38. 1.69 km W of Cobb, California · 13314 days ago · -1 km deep · 1 km away
  39. 1.513 km ESE of Hidden Valley Lake, California · 13314 days ago · 8 km deep · 36 km away
  40. 3.35 km W of Cobb, California · 13314 days ago · 1 km deep · 3 km away
  41. 2.56 km WSW of Cobb, California · 13314 days ago · 0 km deep · 4 km away
  42. 2.06 km W of Cobb, California · 13314 days ago · 2 km deep · 3 km away
  43. 1.66 km W of Cobb, California · 13314 days ago · 1 km deep · 3 km away
  44. 2.17 km WSW of Cobb, California · 13314 days ago · 2 km deep · 4 km away
  45. 2.212 km WSW of Hopland, California · 13314 days ago · -1 km deep · 38 km away
  46. 2.07 km W of Cobb, California · 13313 days ago · 0 km deep · 2 km away
  47. 1.67 km W of Cobb, California · 13313 days ago · 0 km deep · 2 km away
  48. 1.66 km W of Cobb, California · 13311 days ago · 1 km deep · 3 km away
  49. 2.38 km WNW of Cobb, California · 13311 days ago · 2 km deep · 1 km away
  50. 1.55 km SW of Cobb, California · 13311 days ago · 0 km deep · 6 km away
  51. 2.014 km SE of Hidden Valley Lake, California · 13311 days ago · 7 km deep · 36 km away
  52. 1.66 km W of Cobb, California · 13311 days ago · 3 km deep · 2 km away
  53. 1.76 km W of Cobb, California · 13311 days ago · 0 km deep · 2 km away
  54. 1.612 km ENE of Cloverdale, California · 13311 days ago · 1 km deep · 4 km away
  55. 1.521 km E of Potter Valley, California · 13310 days ago · 0 km deep · 59 km away
  56. 1.66 km SW of Kenwood, California · 13309 days ago · 6 km deep · 54 km away
  57. 1.88 km ENE of Potter Valley, California · 13309 days ago · 7 km deep · 60 km away
  58. 2.16 km SW of Cobb, California · 13309 days ago · 2 km deep · 6 km away
  59. 2.18 km W of Cobb, California · 13309 days ago · -1 km deep · 1 km away
  60. 1.57 km W of Cobb, California · 13309 days ago · -1 km deep · 1 km away

The first 60 of 167.

Before

  1. 2.24 km SW of Cobb, California · 13327 days ago · 1 km deep · 8 km away
  2. 1.710 km W of Cobb, California · 13327 days ago · 0 km deep · 1 km away
  3. 1.66 km SW of Cobb, California · 13328 days ago · 0 km deep · 6 km away
  4. 1.710 km NE of Clearlake, California · 13328 days ago · -1 km deep · 33 km away
  5. 1.93 km S of Cobb, California · 13328 days ago · 2 km deep · 10 km away
  6. 1.65 km SW of Cobb, California · 13329 days ago · 0 km deep · 7 km away
  7. 2.24 km WSW of Cobb, California · 13329 days ago · 3 km deep · 5 km away
  8. 2.08 km W of Cobb, California · 13330 days ago · 3 km deep · 1 km away
  9. 2.15 km SE of Hopland, California · 13330 days ago · 4 km deep · 24 km away
  10. 1.85 km WSW of Cobb, California · 13331 days ago · 2 km deep · 4 km away
  11. 1.69 km NW of Cobb, California · 13331 days ago · 1 km deep · 5 km away
  12. 1.57 km W of Cobb, California · 13331 days ago · 3 km deep · 2 km away
  13. 3.07 km WSW of Cobb, California · 13332 days ago · 1 km deep · 4 km away
  14. 2.18 km ESE of Willits, California · 13332 days ago · 2 km deep · 71 km away
  15. 1.65 km SSW of Cobb, California · 13333 days ago · -1 km deep · 8 km away
  16. 1.75 km SSW of Cobb, California · 13333 days ago · 1 km deep · 9 km away
  17. 2.15 km SW of Cobb, California · 13333 days ago · 2 km deep · 7 km away
  18. 2.19 km W of Cobb, California · 13333 days ago · 1 km deep · 0 km away
  19. 2.75 km W of Cobb, California · 13333 days ago · -1 km deep · 4 km away
  20. 3.66 km W of Cobb, California · 13333 days ago · 1 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc155593. Read Sun, Oct 4, 2026, 2:38 PM UTC.