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, Jul 18, 1990, 8:19 PM PDT (03:19 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M4.2 6 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
1990-07-19 03:19:15 UTC
Depth
-0.6 km (-0.4 mi), shallow
Epicenter
38.801° 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, 0.5 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
81°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 143 in the 60 days after this one and 95 in the 30 days before it.

After

  1. 2.27 km N of Geyserville, California · 13226 days ago · 4 km deep · 11 km away
  2. 1.95 km W of Cobb, California · 13226 days ago · 2 km deep · 2 km away
  3. 1.99 km N of Hopland, California · 13226 days ago · 6 km deep · 41 km away
  4. 1.87 km N of Geyserville, California · 13226 days ago · 4 km deep · 11 km away
  5. 1.92 km SSW of Cobb, California · 13225 days ago · 2 km deep · 3 km away
  6. 1.79 km WNW of Cobb, California · 13225 days ago · 2 km deep · 6 km away
  7. 2.08 km NE of Hopland, California · 13225 days ago · 5 km deep · 35 km away
  8. 1.83 km W of Cobb, California · 13225 days ago · 0 km deep · 2 km away
  9. 1.921 km NE of Potter Valley, California · 13224 days ago · 7 km deep · 74 km away
  10. 1.60 km E of Cloverdale, California · 13224 days ago · 4 km deep · 20 km away
  11. 2.46 km SW of Cobb, California · 13224 days ago · 3 km deep · 2 km away
  12. 2.16 km WSW of Cobb, California · 13223 days ago · 1 km deep · 2 km away
  13. 1.73 km NE of Clearlake, California · 13223 days ago · -1 km deep · 26 km away
  14. 2.21 km W of Larkfield-Wikiup, California · 13222 days ago · 3 km deep · 32 km away
  15. 1.66 km W of Cobb, California · 13222 days ago · 1 km deep · 2 km away
  16. 2.89 km W of Cobb, California · 13221 days ago · 1 km deep · 6 km away
  17. 1.57 km S of Temelec, California · 13221 days ago · 5 km deep · 72 km away
  18. 2.716 km NNE of Nice, California · 13221 days ago · 5 km deep · 50 km away
  19. 2.16 km W of Cobb, California · 13220 days ago · -1 km deep · 2 km away
  20. 2.05 km SW of Cobb, California · 13219 days ago · 0 km deep · 2 km away
  21. 1.69 km W of Cobb, California · 13218 days ago · 1 km deep · 6 km away
  22. 1.59 km NE of Cloverdale, California · 13218 days ago · 3 km deep · 16 km away
  23. 1.56 km S of Cobb, California · 13218 days ago · 1 km deep · 7 km away
  24. 2.07 km WSW of Cobb, California · 13218 days ago · 4 km deep · 2 km away
  25. 2.314 km N of Brooktrails, California · 13217 days ago · -1 km deep · 100 km away
  26. 2.15 km W of Cobb, California · 13217 days ago · 0 km deep · 2 km away
  27. 1.55 km E of Yountville, California · 13217 days ago · 17 km deep · 61 km away
  28. 1.87 km W of Cobb, California · 13217 days ago · 3 km deep · 3 km away
  29. 1.75 km ENE of Santa Rosa, California · 13216 days ago · 6 km deep · 40 km away
  30. 1.99 km WNW of Cobb, California · 13216 days ago · 1 km deep · 7 km away
  31. 1.69 km WNW of Cobb, California · 13216 days ago · 0 km deep · 7 km away
  32. 1.59 km WNW of Cobb, California · 13216 days ago · 2 km deep · 7 km away
  33. 1.69 km WNW of Cobb, California · 13216 days ago · 1 km deep · 7 km away
  34. 1.99 km WNW of Cobb, California · 13216 days ago · 0 km deep · 7 km away
  35. 1.51 km ESE of Clearlake, California · 13216 days ago · 3 km deep · 22 km away
  36. 2.311 km ESE of Hidden Valley Lake, California · 13216 days ago · 5 km deep · 30 km away
  37. 2.09 km WNW of Cobb, California · 13215 days ago · 1 km deep · 7 km away
  38. 2.4Northern California · 13215 days ago · 1 km deep · 1 km away
  39. 2.68 km W of Cobb, California · 13215 days ago · 1 km deep · 4 km away
  40. 2.58 km W of Cobb, California · 13215 days ago · 1 km deep · 4 km away
  41. 1.69 km W of Cobb, California · 13214 days ago · -1 km deep · 4 km away
  42. 2.57 km S of Cobb, California · 13213 days ago · 0 km deep · 7 km away
  43. 1.56 km E of San Rafael, California · 13211 days ago · 5 km deep · 97 km away
  44. 2.65 km SW of Cobb, California · 13211 days ago · 1 km deep · 1 km away
  45. 2.56 km WSW of Cobb, California · 13211 days ago · -1 km deep · 1 km away
  46. 2.26 km W of Cobb, California · 13211 days ago · -1 km deep · 3 km away
  47. 1.97 km W of Lakeport, California · 13211 days ago · 22 km deep · 33 km away
  48. 1.55 km W of Cobb, California · 13211 days ago · 1 km deep · 3 km away
  49. 1.94 km W of Cobb, California · 13209 days ago · 2 km deep · 2 km away
  50. 1.93 km SSW of Cobb, California · 13209 days ago · 2 km deep · 3 km away
  51. 1.76 km WSW of Kenwood, California · 13209 days ago · 7 km deep · 48 km away
  52. 1.96 km W of Cobb, California · 13208 days ago · -1 km deep · 3 km away
  53. 1.78 km N of Hopland, California · 13208 days ago · 5 km deep · 41 km away
  54. 2.46 km SW of Cobb, California · 13208 days ago · 0 km deep · 1 km away
  55. 2.15 km WSW of Cobb, California · 13208 days ago · -1 km deep · 0 km away
  56. 2.79 km W of Cobb, California · 13208 days ago · -1 km deep · 5 km away
  57. 2.67 km ESE of Potter Valley, California · 13207 days ago · 4 km deep · 60 km away
  58. 2.122 km NE of Potter Valley, California · 13206 days ago · 7 km deep · 74 km away
  59. 1.64 km WSW of Cobb, California · 13205 days ago · 1 km deep · 1 km away
  60. 1.69 km W of Cobb, California · 13205 days ago · 0 km deep · 5 km away

The first 60 of 143.

Before

  1. 1.510 km W of Cobb, California · 13227 days ago · 1 km deep · 6 km away
  2. 1.5Northern California · 13228 days ago · 0 km deep · 5 km away
  3. 1.96 km WSW of Cobb, California · 13228 days ago · -1 km deep · 1 km away
  4. 1.64 km W of Cobb, California · 13229 days ago · -1 km deep · 3 km away
  5. 1.77 km N of Geyserville, California · 13230 days ago · 4 km deep · 11 km away
  6. 1.77 km N of Geyserville, California · 13230 days ago · 4 km deep · 11 km away
  7. 1.67 km W of Middletown, California · 13230 days ago · 1 km deep · 9 km away
  8. 2.36 km S of Hopland, California · 13231 days ago · 7 km deep · 31 km away
  9. 3.17 km ENE of Brooktrails, California · 13232 days ago · -1 km deep · 86 km away
  10. 1.97 km WSW of Calistoga, California · 13232 days ago · 1 km deep · 29 km away
  11. 2.28 km WSW of Cobb, California · 13233 days ago · -1 km deep · 3 km away
  12. 3.08 km WSW of Cobb, California · 13233 days ago · 0 km deep · 3 km away
  13. 2.48 km WSW of Cobb, California · 13233 days ago · 0 km deep · 3 km away
  14. 1.67 km ENE of Brooktrails, California · 13234 days ago · 10 km deep · 87 km away
  15. 1.722 km NE of Potter Valley, California · 13234 days ago · 6 km deep · 73 km away
  16. 2.221 km NE of Potter Valley, California · 13234 days ago · 7 km deep · 74 km away
  17. 3.06 km WSW of Kenwood, California · 13234 days ago · 8 km deep · 48 km away
  18. 1.88 km S of Cobb, California · 13234 days ago · 4 km deep · 7 km away
  19. 3.57 km WSW of Cobb, California · 13234 days ago · 0 km deep · 2 km away
  20. 1.98 km W of Cobb, California · 13234 days ago · 0 km deep · 4 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc161288. Read Mon, Oct 5, 2026, 3:10 AM UTC.