California earthquakes

M2.2 earthquake 7 km WSW of Cobb, California

A magnitude 2.2 earthquake struck 7 km WSW of Cobb, California on Tue, Nov 17, 1987, 8:09 PM PST (04:09 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M3.2 5 km SW 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.

Open the live map with earthquakes

The earthquake

Magnitude
2.2 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1987-11-18 04:09:55 UTC
Depth
0.6 km (0.3 mi), shallow
Epicenter
38.804° N, 122.803° 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, 0.2 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
102°
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: 172 in the 60 days after this one and 100 in the 30 days before it.

After

  1. 1.85 km SSW of Cobb, California · 14196 days ago · -1 km deep · 5 km away
  2. 1.97 km W of Cobb, California · 14196 days ago · 3 km deep · 1 km away
  3. 1.97 km W of Cobb, California · 14196 days ago · 3 km deep · 1 km away
  4. 2.58 km W of Cobb, California · 14196 days ago · 1 km deep · 3 km away
  5. 1.89 km W of Cobb, California · 14196 days ago · 1 km deep · 3 km away
  6. 1.87 km W of Cobb, California · 14196 days ago · 1 km deep · 2 km away
  7. 1.66 km W of Cobb, California · 14195 days ago · 3 km deep · 2 km away
  8. 2.98 km W of Cobb, California · 14195 days ago · 1 km deep · 2 km away
  9. 2.78 km W of Cobb, California · 14195 days ago · 1 km deep · 3 km away
  10. 1.99 km W of Cobb, California · 14195 days ago · 0 km deep · 3 km away
  11. 1.94 km WSW of Cobb, California · 14194 days ago · 1 km deep · 2 km away
  12. 2.25 km NW of Montalvin, California · 14194 days ago · 5 km deep · 94 km away
  13. 2.54 km WSW of Cobb, California · 14194 days ago · 1 km deep · 3 km away
  14. 1.916 km NNE of Upper Lake, California · 14194 days ago · 4 km deep · 55 km away
  15. 2.28 km W of Cobb, California · 14194 days ago · 1 km deep · 2 km away
  16. 2.07 km W of Cobb, California · 14193 days ago · 3 km deep · 1 km away
  17. 2.05 km E of Redwood Valley, California · 14193 days ago · 7 km deep · 58 km away
  18. 1.67 km WSW of Cobb, California · 14193 days ago · 4 km deep · 1 km away
  19. 2.48 km ENE of Hidden Valley Lake, California · 14193 days ago · 10 km deep · 30 km away
  20. 1.75 km SW of Cobb, California · 14192 days ago · -1 km deep · 4 km away
  21. 1.6Northern California · 14192 days ago · 0 km deep · 4 km away
  22. 1.55 km SW of Cobb, California · 14192 days ago · -1 km deep · 4 km away
  23. 2.06 km W of Cobb, California · 14192 days ago · 3 km deep · 2 km away
  24. 1.6Northern California · 14192 days ago · 1 km deep · 4 km away
  25. 1.95 km WNW of Cobb, California · 14192 days ago · 2 km deep · 4 km away
  26. 2.110 km SW of Cloverdale, California · 14192 days ago · 5 km deep · 28 km away
  27. 1.74 km W of Cobb, California · 14191 days ago · 0 km deep · 3 km away
  28. 1.67 km WSW of Cobb, California · 14191 days ago · 4 km deep · 1 km away
  29. 2.18 km W of Cobb, California · 14190 days ago · 1 km deep · 4 km away
  30. 1.56 km WSW of Cobb, California · 14190 days ago · 0 km deep · 1 km away
  31. 1.95 km W of Cobb, California · 14190 days ago · 0 km deep · 2 km away
  32. 1.95 km W of Cobb, California · 14190 days ago · 0 km deep · 3 km away
  33. 1.69 km ESE of Hidden Valley Lake, California · 14189 days ago · 6 km deep · 30 km away
  34. 2.64 km WSW of Cobb, California · 14189 days ago · 1 km deep · 2 km away
  35. 2.34 km SW of Cobb, California · 14188 days ago · 0 km deep · 3 km away
  36. 1.74 km NNE of Calistoga, California · 14187 days ago · 15 km deep · 30 km away
  37. 1.920 km ENE of Potter Valley, California · 14187 days ago · 7 km deep · 66 km away
  38. 1.69 km WNW of Cobb, California · 14186 days ago · 14 km deep · 7 km away
  39. 2.213 km NNW of Moskowite Corner, California · 14186 days ago · 5 km deep · 54 km away
  40. 1.64 km WSW of Cobb, California · 14186 days ago · 1 km deep · 3 km away
  41. 1.67 km WNW of Cobb, CA · 14186 days ago · 0 km deep · 4 km away
  42. 2.17 km W of Cobb, California · 14186 days ago · 3 km deep · 2 km away
  43. 2.0Northern California · 14186 days ago · 1 km deep · 6 km away
  44. 1.86 km S of Cobb, California · 14186 days ago · 1 km deep · 8 km away
  45. 1.77 km WSW of Cobb, California · 14185 days ago · 4 km deep · 1 km away
  46. 1.67 km WSW of Cobb, California · 14185 days ago · 1 km deep · 0 km away
  47. 2.012 km WSW of Hopland, California · 14185 days ago · 6 km deep · 41 km away
  48. 2.16 km W of Cobb, California · 14185 days ago · 3 km deep · 2 km away
  49. 1.69 km W of Cobb, California · 14185 days ago · 0 km deep · 3 km away
  50. 2.86 km W of Cobb, California · 14185 days ago · 1 km deep · 3 km away
  51. 1.69 km W of Cobb, California · 14185 days ago · -1 km deep · 3 km away
  52. 1.78 km W of Cobb, California · 14185 days ago · 0 km deep · 2 km away
  53. 2.57 km WSW of Cobb, California · 14183 days ago · 3 km deep · 0 km away
  54. 1.97 km WSW of Cobb, California · 14183 days ago · 3 km deep · 0 km away
  55. 1.6Northern California · 14183 days ago · 1 km deep · 4 km away
  56. 2.17 km E of Potter Valley, California · 14183 days ago · 0 km deep · 60 km away
  57. 2.719 km ENE of Sea Ranch, California · 14182 days ago · 4 km deep · 40 km away
  58. 1.519 km ENE of Sea Ranch, California · 14182 days ago · 4 km deep · 40 km away
  59. 1.95 km W of Cobb, California · 14181 days ago · 1 km deep · 3 km away
  60. 1.97 km WSW of Cobb, California · 14181 days ago · 1 km deep · 0 km away

The first 60 of 172.

Before

  1. 1.62 km SSE of Fulton, California · 14199 days ago · 8 km deep · 36 km away
  2. 1.93 km SW of Cobb, California · 14200 days ago · 1 km deep · 5 km away
  3. 2.09 km W of Cobb, California · 14200 days ago · 1 km deep · 2 km away
  4. 1.66 km W of Cobb, California · 14203 days ago · 2 km deep · 1 km away
  5. 1.76 km W of Cobb, California · 14203 days ago · 3 km deep · 3 km away
  6. 3.16 km WSW of Cobb, California · 14203 days ago · 3 km deep · 1 km away
  7. 1.512 km NNW of Angwin, California · 14203 days ago · 5 km deep · 29 km away
  8. 2.518 km NE of Potter Valley, California · 14203 days ago · 7 km deep · 70 km away
  9. 1.812 km SE of Middletown, California · 14203 days ago · 6 km deep · 29 km away
  10. 2.47 km E of Willits, California · 14204 days ago · 1 km deep · 78 km away
  11. 1.59 km SSW of Cobb, California · 14204 days ago · 8 km deep · 8 km away
  12. 1.9Northern California · 14204 days ago · 0 km deep · 3 km away
  13. 3.05 km W of Cobb, California · 14204 days ago · 2 km deep · 3 km away
  14. 2.06 km W of Cobb, California · 14204 days ago · 1 km deep · 3 km away
  15. 2.17 km W of Cobb, California · 14205 days ago · 3 km deep · 2 km away
  16. 1.611 km ESE of Hidden Valley Lake, California · 14206 days ago · 5 km deep · 31 km away
  17. 1.56 km WSW of Cobb, California · 14207 days ago · 0 km deep · 0 km away
  18. 1.56 km WSW of Cobb, California · 14207 days ago · 1 km deep · 1 km away
  19. 2.427 km SSE of Covelo, California · 14207 days ago · 4 km deep · 90 km away
  20. 1.74 km W of Calistoga, California · 14208 days ago · 3 km deep · 30 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc108563. Read Fri, Oct 2, 2026, 8:42 PM UTC.