California earthquakes

M1.6 earthquake 6 km W of Cobb, California

A magnitude 1.6 earthquake struck 6 km W of Cobb, California on Thu, May 3, 1984, 9:04 PM PDT (04:04 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M1.7 7 km WSW 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
1.6 (md), micro
Local time
UTC
1984-05-04 04:04:34 UTC
Depth
2.8 km (1.8 mi), shallow
Epicenter
38.822° 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, 0.4 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
87°
Stations used
17

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 0 in the 30 days before it.

After

  1. 1.77 km WSW of Cobb, California · 15474 days ago · 3 km deep · 3 km away
  2. 2.25 km ESE of Manchester, California · 15473 days ago · 0 km deep · 73 km away
  3. 1.86 km W of Cobb, California · 15472 days ago · 3 km deep · 0 km away
  4. 1.73 km N of Clearlake, California · 15472 days ago · 0 km deep · 24 km away
  5. 1.620 km NNE of Upper Lake, California · 15472 days ago · 6 km deep · 58 km away
  6. 1.814 km SE of Laytonville, California · 15471 days ago · 0 km deep · 99 km away
  7. 1.66 km WSW of Cobb, California · 15471 days ago · 3 km deep · 2 km away
  8. 1.75 km WSW of Rutherford, California · 15470 days ago · 0 km deep · 51 km away
  9. 1.77 km WSW of Cobb, California · 15470 days ago · 3 km deep · 3 km away
  10. 1.816 km ENE of Potter Valley, California · 15470 days ago · 6 km deep · 65 km away
  11. 2.34 km SW of Cobb, California · 15469 days ago · 0 km deep · 6 km away
  12. 1.67 km W of Cobb, California · 15469 days ago · 3 km deep · 1 km away
  13. 1.96 km W of Cobb, California · 15469 days ago · 2 km deep · 1 km away
  14. 1.66 km W of Cobb, California · 15469 days ago · 3 km deep · 0 km away
  15. 1.67 km WSW of Cobb, California · 15468 days ago · 2 km deep · 2 km away
  16. 1.96 km W of Cobb, California · 15468 days ago · 3 km deep · 1 km away
  17. 2.37 km WSW of Cobb, California · 15468 days ago · 0 km deep · 2 km away
  18. 1.93 km SE of Calpella, California · 15468 days ago · 5 km deep · 54 km away
  19. 1.67 km E of Hidden Valley Lake, California · 15467 days ago · 7 km deep · 29 km away
  20. 1.77 km WSW of Cobb, California · 15467 days ago · 0 km deep · 2 km away
  21. 1.8Northern California · 15467 days ago · 4 km deep · 23 km away
  22. 3.05 km SW of Cobb, California · 15467 days ago · 0 km deep · 6 km away
  23. 1.96 km W of Cobb, California · 15467 days ago · 3 km deep · 1 km away
  24. 1.525 km SE of Covelo, California · 15466 days ago · 4 km deep · 91 km away
  25. 1.6Northern California · 15465 days ago · 0 km deep · 35 km away
  26. 1.87 km S of Calistoga, California · 15465 days ago · 1 km deep · 40 km away
  27. 2.56 km W of Cobb, California · 15464 days ago · 2 km deep · 1 km away
  28. 2.16 km W of Cobb, California · 15464 days ago · 2 km deep · 1 km away
  29. 1.67 km WSW of Cobb, California · 15464 days ago · 4 km deep · 3 km away
  30. 1.57 km WSW of Cobb, California · 15464 days ago · 3 km deep · 3 km away
  31. 1.75 km ESE of Healdsburg, California · 15464 days ago · 4 km deep · 25 km away
  32. 2.47 km WSW of Cobb, California · 15464 days ago · 1 km deep · 2 km away
  33. 1.712 km S of Comptche, California · 15463 days ago · 3 km deep · 79 km away
  34. 2.112 km S of Comptche, California · 15463 days ago · 0 km deep · 77 km away
  35. 1.55 km N of Windsor, California · 15463 days ago · 7 km deep · 25 km away
  36. 2.47 km WSW of Cobb, California · 15463 days ago · -1 km deep · 2 km away
  37. 2.37 km W of Cobb, California · 15462 days ago · 2 km deep · 2 km away
  38. 2.07 km W of Cobb, California · 15462 days ago · 1 km deep · 1 km away
  39. 1.56 km WSW of Cobb, California · 15461 days ago · 1 km deep · 2 km away
  40. 1.8Northern California · 15461 days ago · 3 km deep · 3 km away
  41. 1.98 km WSW of Cobb, California · 15461 days ago · 3 km deep · 3 km away
  42. 2.38 km WSW of Cobb, California · 15461 days ago · 2 km deep · 3 km away
  43. 1.77 km W of Cobb, California · 15461 days ago · 3 km deep · 1 km away
  44. 1.610 km N of Comptche, California · 15460 days ago · 5 km deep · 90 km away
  45. 1.66 km NE of Lower Lake, California · 15460 days ago · 1 km deep · 26 km away
  46. 1.67 km SSW of Willits, California · 15460 days ago · 1 km deep · 78 km away
  47. 2.621 km NE of Potter Valley, California · 15460 days ago · 5 km deep · 72 km away
  48. 1.88 km E of Lower Lake, California · 15460 days ago · 3 km deep · 27 km away
  49. 1.56 km W of Cobb, California · 15459 days ago · 0 km deep · 1 km away
  50. 2.56 km W of Cobb, California · 15459 days ago · 0 km deep · 1 km away
  51. 1.77 km W of Cobb, California · 15459 days ago · 0 km deep · 1 km away
  52. 1.65 km WSW of Cobb, California · 15459 days ago · 1 km deep · 3 km away
  53. 1.616 km ENE of Potter Valley, California · 15459 days ago · 7 km deep · 65 km away
  54. 1.92 km WSW of Cobb, California · 15459 days ago · -1 km deep · 4 km away
  55. 1.73 km SW of Cobb, California · 15459 days ago · 1 km deep · 6 km away
  56. 1.57 km W of Potter Valley, California · 15459 days ago · 8 km deep · 66 km away
  57. 1.76 km W of Cobb, California · 15458 days ago · 3 km deep · 0 km away
  58. 1.68 km W of Cobb, California · 15458 days ago · -1 km deep · 2 km away
  59. 2.28 km SW of Cobb, California · 15458 days ago · -1 km deep · 6 km away
  60. 3.08 km W of Cobb, California · 15458 days ago · -1 km deep · 2 km away

The first 60 of 172.

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc17685. Read Tue, Sep 22, 2026, 9:42 PM UTC.