California earthquakes

M1.9 earthquake 6 km W of Cobb, California

A magnitude 1.9 earthquake struck 6 km W of Cobb, California on Sun, Mar 10, 1991, 1:47 PM PST (21:47 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.3 7 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1991-03-10 21:47:15 UTC
Depth
1.9 km (1.2 mi), shallow
Epicenter
38.825° N, 122.794° 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 0.3 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
116°
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: 164 in the 60 days after this one and 88 in the 30 days before it.

After

  1. 1.64 km WSW of Cobb, California · 12992 days ago · 1 km deep · 2 km away
  2. 2.05 km E of Redwood Valley, California · 12992 days ago · 7 km deep · 58 km away
  3. 1.57 km E of Clearlake Oaks, California · 12991 days ago · 2 km deep · 29 km away
  4. 1.58 km W of Middletown, California · 12991 days ago · 2 km deep · 11 km away
  5. 1.76 km WSW of Calistoga, California · 12991 days ago · -1 km deep · 32 km away
  6. 1.76 km NW of Moskowite Corner, California · 12991 days ago · 1 km deep · 61 km away
  7. 2.15 km WSW of Cobb, California · 12990 days ago · 0 km deep · 4 km away
  8. 2.16 km NE of Santa Rosa, California · 12990 days ago · 1 km deep · 41 km away
  9. 2.64 km WSW of Cobb, California · 12990 days ago · 2 km deep · 3 km away
  10. 1.87 km W of Cobb, California · 12989 days ago · 0 km deep · 2 km away
  11. 1.814 km NNW of Moskowite Corner, California · 12989 days ago · 1 km deep · 54 km away
  12. 1.94 km W of Cobb, California · 12989 days ago · 1 km deep · 1 km away
  13. 2.913 km NW of Moskowite Corner, California · 12989 days ago · -1 km deep · 54 km away
  14. 2.013 km NW of Moskowite Corner, California · 12989 days ago · 1 km deep · 55 km away
  15. 1.55 km W of Cobb, California · 12988 days ago · 0 km deep · 1 km away
  16. 1.68 km W of Cobb, California · 12988 days ago · 1 km deep · 3 km away
  17. 1.516 km NE of Lucerne, California · 12988 days ago · 10 km deep · 44 km away
  18. 2.616 km NNE of Lucerne, California · 12988 days ago · 9 km deep · 45 km away
  19. 1.720 km NNE of Upper Lake, California · 12987 days ago · 4 km deep · 56 km away
  20. 1.95 km WSW of Cobb, California · 12987 days ago · 1 km deep · 2 km away
  21. 1.63 km NE of Clear Lake Riviera, California · 12986 days ago · -1 km deep · 19 km away
  22. 1.814 km E of Angwin, California · 12986 days ago · 0 km deep · 54 km away
  23. 1.59 km W of Cobb, California · 12986 days ago · 1 km deep · 3 km away
  24. 1.87 km WSW of Cobb, California · 12985 days ago · 1 km deep · 3 km away
  25. 3.37 km W of Cobb, California · 12985 days ago · 3 km deep · 1 km away
  26. 1.87 km W of Cobb, California · 12985 days ago · 3 km deep · 2 km away
  27. 1.97 km W of Cobb, California · 12985 days ago · 3 km deep · 2 km away
  28. 1.74 km WSW of Cobb, California · 12985 days ago · 1 km deep · 3 km away
  29. 1.64 km WSW of Cobb, California · 12985 days ago · 3 km deep · 4 km away
  30. 1.68 km W of Cobb, California · 12985 days ago · 2 km deep · 2 km away
  31. 1.920 km ENE of Potter Valley, California · 12984 days ago · 9 km deep · 64 km away
  32. 1.514 km NE of Upper Lake, California · 12984 days ago · 1 km deep · 48 km away
  33. 1.65 km W of Cobb, California · 12984 days ago · 2 km deep · 1 km away
  34. 1.83 km SSW of Cobb, California · 12984 days ago · 2 km deep · 6 km away
  35. 1.97 km W of Cobb, California · 12984 days ago · 3 km deep · 2 km away
  36. 1.66 km SW of Cobb, California · 12984 days ago · 1 km deep · 5 km away
  37. 1.617 km NE of Clearlake, California · 12984 days ago · 14 km deep · 38 km away
  38. 2.38 km WNW of Cobb, California · 12983 days ago · 2 km deep · 3 km away
  39. 2.16 km WSW of Cobb, California · 12982 days ago · 1 km deep · 4 km away
  40. 1.59 km W of Redwood Valley, California · 12980 days ago · 1 km deep · 66 km away
  41. 1.85 km SW of Cobb, California · 12980 days ago · 0 km deep · 4 km away
  42. 1.66 km WNW of Cobb, California · 12980 days ago · 1 km deep · 3 km away
  43. 1.811 km N of Brooktrails, California · 12980 days ago · 10 km deep · 94 km away
  44. 2.113 km WSW of Hopland, California · 12980 days ago · 0 km deep · 41 km away
  45. 1.515 km ENE of Angwin, California · 12980 days ago · 4 km deep · 47 km away
  46. 2.15 km SW of Cobb, California · 12979 days ago · 2 km deep · 4 km away
  47. 2.26 km W of Cobb, California · 12979 days ago · 1 km deep · 2 km away
  48. 2.03 km SW of Cobb, California · 12979 days ago · 1 km deep · 5 km away
  49. 1.94 km W of Cobb, California · 12977 days ago · 0 km deep · 2 km away
  50. 1.59 km W of Cobb, California · 12976 days ago · 1 km deep · 3 km away
  51. 1.521 km ENE of Potter Valley, California · 12976 days ago · 6 km deep · 61 km away
  52. 1.79 km WNW of Cobb, California · 12976 days ago · 2 km deep · 3 km away
  53. 1.69 km W of Cobb, California · 12976 days ago · 1 km deep · 3 km away
  54. 1.95 km SW of Cobb, California · 12975 days ago · 2 km deep · 5 km away
  55. 2.014 km N of Brooktrails, California · 12975 days ago · 7 km deep · 98 km away
  56. 2.13 km E of Talmage, California · 12974 days ago · 6 km deep · 45 km away
  57. 1.65 km WSW of Cobb, California · 12974 days ago · 1 km deep · 4 km away
  58. 1.64 km WSW of Cobb, California · 12974 days ago · 2 km deep · 3 km away
  59. 2.25 km W of Cobb, California · 12974 days ago · -1 km deep · 1 km away
  60. 2.35 km W of Cobb, California · 12974 days ago · 1 km deep · 2 km away

The first 60 of 164.

Before

  1. 1.77 km WSW of Cobb, California · 12993 days ago · 4 km deep · 2 km away
  2. 1.73 km SW of Moskowite Corner, California · 12993 days ago · 7 km deep · 67 km away
  3. 1.94 km SW of Cobb, California · 12993 days ago · 0 km deep · 5 km away
  4. 1.74 km SW of Cobb, California · 12994 days ago · 0 km deep · 4 km away
  5. 1.74 km SW of Cobb, California · 12994 days ago · 0 km deep · 4 km away
  6. 2.99 km W of Cobb, California · 12995 days ago · 1 km deep · 3 km away
  7. 1.97 km ENE of Clearlake, California · 12995 days ago · 4 km deep · 28 km away
  8. 1.710 km NW of Cobb, California · 12995 days ago · 1 km deep · 6 km away
  9. 1.810 km W of Cobb, California · 12996 days ago · -1 km deep · 4 km away
  10. 2.39 km W of Cobb, California · 12996 days ago · -1 km deep · 4 km away
  11. 2.99 km W of Cobb, California · 12996 days ago · 0 km deep · 4 km away
  12. 1.67 km WSW of Hopland, California · 12996 days ago · 5 km deep · 38 km away
  13. 1.813 km NNE of Angwin, California · 12996 days ago · 0 km deep · 38 km away
  14. 1.75 km E of Rohnert Park, California · 12996 days ago · 4 km deep · 55 km away
  15. 2.58 km W of Cobb, California · 12996 days ago · 0 km deep · 2 km away
  16. 1.613 km NW of Brooktrails, California · 12996 days ago · 1 km deep · 99 km away
  17. 1.74 km WSW of Cobb, California · 12997 days ago · 1 km deep · 2 km away
  18. 1.67 km NE of Rohnert Park, California · 12997 days ago · 6 km deep · 52 km away
  19. 1.66 km SW of Calistoga, California · 12998 days ago · 6 km deep · 34 km away
  20. 2.06 km ENE of Windsor, California · 12998 days ago · 2 km deep · 29 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc207839. Read Mon, Oct 5, 2026, 2:37 AM UTC.