California earthquakes

M1.6 earthquake 7 km WSW of Cobb, California

A magnitude 1.6 earthquake struck 7 km WSW of Cobb, California on Mon, Mar 26, 1984, 11:54 PM PST (07:54 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.2 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1984-03-27 07:54:49 UTC
Depth
0.8 km (0.5 mi), shallow
Epicenter
38.803° N, 122.805° 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, 0.5 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
72°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 166 in the 60 days after this one and 112 in the 30 days before it.

After

  1. 2.37 km WSW of Cobb, California · 15530 days ago · 1 km deep · 0 km away
  2. 1.62 km NE of Ukiah, California · 15530 days ago · 8 km deep · 53 km away
  3. 1.98 km WSW of Cobb, California · 15529 days ago · 3 km deep · 1 km away
  4. 1.57 km WSW of Calistoga, California · 15529 days ago · 0 km deep · 31 km away
  5. 2.17 km W of Cobb, California · 15528 days ago · -1 km deep · 1 km away
  6. 2.05 km WSW of Cobb, California · 15528 days ago · 0 km deep · 2 km away
  7. 3.05 km WSW of Cobb, California · 15528 days ago · 0 km deep · 2 km away
  8. 2.26 km WSW of Cobb, California · 15528 days ago · 0 km deep · 2 km away
  9. 2.09 km W of Cobb, California · 15528 days ago · 2 km deep · 2 km away
  10. 1.66 km NNE of Benicia, California · 15527 days ago · 5 km deep · 97 km away
  11. 2.16 km NNE of Clearlake Oaks, California · 15527 days ago · 6 km deep · 34 km away
  12. 1.55 km W of Cobb, California · 15527 days ago · 0 km deep · 4 km away
  13. 1.76 km W of Cobb, California · 15527 days ago · 0 km deep · 3 km away
  14. 2.39 km WSW of Cobb, California · 15527 days ago · 1 km deep · 2 km away
  15. 2.18 km WSW of Cobb, California · 15527 days ago · 3 km deep · 1 km away
  16. 1.67 km WSW of Cobb, California · 15526 days ago · 0 km deep · 0 km away
  17. 1.65 km SW of Cobb, California · 15526 days ago · 1 km deep · 3 km away
  18. 1.720 km NE of Potter Valley, California · 15526 days ago · 5 km deep · 73 km away
  19. 1.65 km W of Cobb, California · 15526 days ago · 0 km deep · 2 km away
  20. 1.66 km W of Cobb, California · 15526 days ago · 3 km deep · 2 km away
  21. 2.0Northern California · 15525 days ago · 1 km deep · 3 km away
  22. 2.48 km W of Cobb, California · 15524 days ago · 0 km deep · 2 km away
  23. 1.66 km WSW of Cobb, California · 15524 days ago · 1 km deep · 1 km away
  24. 1.77 km WSW of Cobb, California · 15524 days ago · 3 km deep · 1 km away
  25. 1.67 km W of Cobb, California · 15524 days ago · 3 km deep · 1 km away
  26. 1.59 km WSW of Cobb, California · 15524 days ago · 1 km deep · 2 km away
  27. 1.59 km ENE of Brooktrails, California · 15523 days ago · 10 km deep · 87 km away
  28. 1.96 km W of Cobb, California · 15523 days ago · 3 km deep · 2 km away
  29. 1.83 km WNW of Soda Bay, California · 15523 days ago · 5 km deep · 24 km away
  30. 1.58 km WSW of Cobb, California · 15523 days ago · 3 km deep · 1 km away
  31. 2.07 km W of Cobb, California · 15523 days ago · 3 km deep · 1 km away
  32. 1.83 km WNW of Soda Bay, California · 15522 days ago · 6 km deep · 24 km away
  33. 2.63 km NNW of Dunnigan, California · 15522 days ago · 7 km deep · 72 km away
  34. 2.3Northern California · 15522 days ago · 12 km deep · 20 km away
  35. 2.86 km WSW of Cobb, California · 15522 days ago · 3 km deep · 1 km away
  36. 2.66 km W of Cobb, California · 15522 days ago · 0 km deep · 1 km away
  37. 2.06 km WSW of Cobb, California · 15522 days ago · 3 km deep · 1 km away
  38. 1.718 km NNE of Upper Lake, California · 15521 days ago · 9 km deep · 58 km away
  39. 1.78 km SE of Willits, California · 15521 days ago · -1 km deep · 74 km away
  40. 1.66 km W of Cobb, California · 15521 days ago · 3 km deep · 2 km away
  41. 1.69 km ESE of Willits, California · 15520 days ago · 6 km deep · 74 km away
  42. 2.18 km SE of Willits, California · 15519 days ago · 2 km deep · 74 km away
  43. 1.69 km WSW of Cobb, California · 15519 days ago · 2 km deep · 2 km away
  44. 1.75 km WSW of Cobb, California · 15518 days ago · 0 km deep · 2 km away
  45. 1.69 km WSW of Cobb, California · 15518 days ago · 7 km deep · 2 km away
  46. 1.87 km WSW of Cobb, California · 15518 days ago · 0 km deep · 0 km away
  47. 1.65 km E of Lakeport, California · 15517 days ago · 5 km deep · 27 km away
  48. 1.55 km SSW of Boonville, California · 15517 days ago · 1 km deep · 55 km away
  49. 1.616 km ENE of Potter Valley, California · 15517 days ago · 8 km deep · 66 km away
  50. 2.99 km SE of Willits, California · 15516 days ago · 4 km deep · 74 km away
  51. 1.63 km ENE of Brooktrails, California · 15516 days ago · 4 km deep · 87 km away
  52. 1.99 km W of Cobb, California · 15516 days ago · -1 km deep · 2 km away
  53. 1.66 km WSW of Cobb, California · 15516 days ago · 0 km deep · 1 km away
  54. 1.66 km WSW of Cobb, California · 15516 days ago · 0 km deep · 1 km away
  55. 3.06 km W of Cobb, California · 15516 days ago · 0 km deep · 1 km away
  56. 2.86 km WSW of Cobb, California · 15516 days ago · 0 km deep · 1 km away
  57. 2.57 km WSW of Cobb, California · 15516 days ago · 0 km deep · 0 km away
  58. 1.66 km S of Hopland, California · 15516 days ago · 4 km deep · 29 km away
  59. 1.77 km WSW of Cobb, California · 15516 days ago · 0 km deep · 0 km away
  60. 1.65 km W of Cobb, California · 15516 days ago · 0 km deep · 3 km away

The first 60 of 166.

Before

  1. 1.810 km ESE of Hopland, California · 15531 days ago · 10 km deep · 23 km away
  2. 1.67 km WSW of Cobb, California · 15531 days ago · 1 km deep · 0 km away
  3. 1.74 km N of Redwood Valley, California · 15532 days ago · 4 km deep · 66 km away
  4. 3.24 km N of Redwood Valley, California · 15532 days ago · 8 km deep · 66 km away
  5. 1.65 km SW of Cobb, California · 15533 days ago · 1 km deep · 5 km away
  6. 1.76 km WNW of American Canyon, California · 15533 days ago · 5 km deep · 79 km away
  7. 2.00 km WSW of Green Valley, California · 15533 days ago · 9 km deep · 82 km away
  8. 1.85 km SW of Cobb, California · 15533 days ago · 1 km deep · 5 km away
  9. 1.67 km W of Cobb, California · 15533 days ago · 3 km deep · 2 km away
  10. 2.21 km SSE of Green Valley, California · 15533 days ago · 5 km deep · 85 km away
  11. 2.43 km SSW of Green Valley, California · 15533 days ago · 5 km deep · 84 km away
  12. 1.57 km WSW of Cobb, California · 15533 days ago · 1 km deep · 0 km away
  13. 1.53 km NNE of Geyserville, California · 15533 days ago · 14 km deep · 10 km away
  14. 1.76 km NNE of Black Point-Green Point, California · 15534 days ago · 1 km deep · 76 km away
  15. 2.16 km W of Cobb, California · 15534 days ago · 2 km deep · 2 km away
  16. 1.76 km WSW of Inverness, California · 15535 days ago · 5 km deep · 82 km away
  17. 2.57 km W of Cobb, California · 15535 days ago · 4 km deep · 2 km away
  18. 1.77 km WSW of Cobb, California · 15535 days ago · 1 km deep · 0 km away
  19. 1.511 km SSW of Kelseyville, California · 15535 days ago · 19 km deep · 10 km away
  20. 1.713 km WNW of Cloverdale, California · 15536 days ago · 23 km deep · 32 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc12450. Read Sat, Oct 3, 2026, 9:29 AM UTC.