California earthquakes

M1.6 earthquake 3 km S of Nice, California

A magnitude 1.6 earthquake struck 3 km S of Nice, California on Fri, Jul 20, 1984, 11:01 AM PDT (18:01 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M4.1 10 km W of Philo, California. This one was a foreshock.

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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
1984-07-20 18:01:02 UTC
Depth
12.4 km (7.7 mi), shallow
Epicenter
39.087° N, 122.852° 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 2.9 km horizontally, 5.0 km in depth
Depth from
From location
Station coverage gap
129°
Stations used
4

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 87 in the 30 days before it.

After

  1. 1.65 km SW of Cobb, California · 15416 days ago · 1 km deep · 35 km away
  2. 1.76 km W of Cobb, California · 15416 days ago · 2 km deep · 31 km away
  3. 1.66 km W of Cobb, California · 15416 days ago · 2 km deep · 31 km away
  4. 2.25 km SW of Cobb, California · 15415 days ago · 0 km deep · 34 km away
  5. 1.65 km SW of Cobb, California · 15415 days ago · -1 km deep · 34 km away
  6. 1.67 km WSW of Cobb, California · 15415 days ago · 3 km deep · 32 km away
  7. 2.35 km SW of Cobb, California · 15415 days ago · 0 km deep · 34 km away
  8. 2.16 km W of Cobb, California · 15415 days ago · 2 km deep · 31 km away
  9. 1.5Northern California · 15415 days ago · 1 km deep · 32 km away
  10. 2.326 km NNE of Potter Valley, California · 15414 days ago · 7 km deep · 51 km away
  11. 1.56 km WSW of Cobb, California · 15414 days ago · 4 km deep · 31 km away
  12. 2.23 km SE of Clear Lake Riviera, California · 15414 days ago · -1 km deep · 23 km away
  13. 1.623 km NNE of Potter Valley, California · 15413 days ago · 10 km deep · 48 km away
  14. 1.610 km W of Geyserville, California · 15413 days ago · -1 km deep · 45 km away
  15. 1.96 km W of Cobb, California · 15413 days ago · 3 km deep · 30 km away
  16. 1.68 km W of Cobb, California · 15413 days ago · 1 km deep · 29 km away
  17. 2.05 km W of Cobb, California · 15412 days ago · 2 km deep · 30 km away
  18. 1.618 km NE of Potter Valley, California · 15412 days ago · 7 km deep · 37 km away
  19. 1.77 km WSW of Cobb, California · 15411 days ago · 0 km deep · 33 km away
  20. 1.66 km W of Cobb, California · 15411 days ago · 2 km deep · 30 km away
  21. 1.611 km E of Angwin, California · 15411 days ago · 2 km deep · 72 km away
  22. 1.7near the coast of Northern California · 15410 days ago · 1 km deep · 70 km away
  23. 2.07 km W of Cobb, California · 15410 days ago · 3 km deep · 30 km away
  24. 1.64 km SW of Calistoga, California · 15409 days ago · -1 km deep · 63 km away
  25. 3.27 km SW of Cobb, California · 15409 days ago · 3 km deep · 36 km away
  26. 1.57 km SW of Cobb, California · 15409 days ago · 3 km deep · 36 km away
  27. 1.625 km NNE of Potter Valley, California · 15409 days ago · 3 km deep · 51 km away
  28. 1.57 km WSW of Cobb, California · 15408 days ago · 2 km deep · 32 km away
  29. 2.36 km WSW of Cobb, California · 15408 days ago · 3 km deep · 31 km away
  30. 2.25 km WSW of Cobb, California · 15408 days ago · 0 km deep · 32 km away
  31. 1.98 km WSW of Cobb, California · 15407 days ago · 0 km deep · 32 km away
  32. 1.74 km SSE of Calpella, California · 15407 days ago · 7 km deep · 31 km away
  33. 2.07 km W of Cobb, California · 15407 days ago · 0 km deep · 30 km away
  34. 1.97 km WSW of Cobb, California · 15407 days ago · 1 km deep · 31 km away
  35. 1.87 km W of Cobb, California · 15407 days ago · 0 km deep · 30 km away
  36. 1.625 km NNE of Potter Valley, California · 15407 days ago · 6 km deep · 51 km away
  37. 1.68 km W of Cobb, California · 15407 days ago · 3 km deep · 31 km away
  38. 2.45 km NNW of Guinda, California · 15407 days ago · 0 km deep · 59 km away
  39. 1.78 km WSW of Cobb, California · 15406 days ago · 3 km deep · 33 km away
  40. 2.67 km W of Cobb, California · 15406 days ago · 2 km deep · 30 km away
  41. 3.06 km W of Cobb, California · 15406 days ago · 3 km deep · 30 km away
  42. 2.326 km ENE of Potter Valley, California · 15405 days ago · 4 km deep · 41 km away
  43. 2.315 km NE of Lucerne, California · 15405 days ago · 0 km deep · 19 km away
  44. 2.0Northern California · 15405 days ago · 0 km deep · 31 km away
  45. 1.811 km NNW of Laytonville, California · 15405 days ago · 6 km deep · 97 km away
  46. 2.16 km W of Cobb, California · 15404 days ago · 3 km deep · 30 km away
  47. 1.66 km W of Cobb, California · 15404 days ago · 3 km deep · 30 km away
  48. 1.94 km W of Cobb, California · 15404 days ago · -1 km deep · 30 km away
  49. 1.52 km WNW of Redwood Valley, California · 15402 days ago · 4 km deep · 38 km away
  50. 1.88 km WSW of Cobb, California · 15401 days ago · 3 km deep · 31 km away
  51. 1.613 km NNW of Moskowite Corner, California · 15401 days ago · 15 km deep · 78 km away
  52. 1.56 km WSW of Cobb, California · 15401 days ago · 3 km deep · 32 km away
  53. 1.920 km NNE of Upper Lake, California · 15400 days ago · 7 km deep · 28 km away
  54. 1.66 km W of Cobb, California · 15399 days ago · 2 km deep · 31 km away
  55. 1.96 km WSW of Cobb, California · 15398 days ago · 3 km deep · 32 km away
  56. 2.46 km W of Cobb, California · 15398 days ago · 3 km deep · 30 km away
  57. 1.74 km WSW of Cobb, California · 15397 days ago · 1 km deep · 32 km away
  58. 2.73 km ENE of Lakeport, California · 15397 days ago · 2 km deep · 5 km away
  59. 1.76 km W of Cobb, California · 15396 days ago · 1 km deep · 31 km away
  60. 1.99 km WSW of Cobb, California · 15396 days ago · 1 km deep · 32 km away

The first 60 of 166.

Before

  1. 1.78 km W of Cobb, California · 15416 days ago · 0 km deep · 30 km away
  2. 2.516 km NNE of Upper Lake, California · 15417 days ago · 7 km deep · 23 km away
  3. 1.92 km ENE of Soda Bay, California · 15417 days ago · 3 km deep · 12 km away
  4. 1.75 km W of Cobb, California · 15417 days ago · 1 km deep · 30 km away
  5. 2.57 km W of Cobb, California · 15417 days ago · 3 km deep · 30 km away
  6. 2.09 km E of Calpella, California · 15417 days ago · 2 km deep · 26 km away
  7. 1.98 km W of Orland, California · 15418 days ago · 0 km deep · 86 km away
  8. 1.72 km NE of Lakeport, California · 15418 days ago · 3 km deep · 5 km away
  9. 2.57 km WSW of Cobb, California · 15418 days ago · 0 km deep · 32 km away
  10. 2.70 km WSW of Lakeport, California · 15418 days ago · 21 km deep · 8 km away
  11. 2.18 km SSW of Lakeport, California · 15418 days ago · 4 km deep · 15 km away
  12. 1.89 km SSW of Calistoga, California · 15419 days ago · 5 km deep · 68 km away
  13. 1.94 km WSW of Cobb, California · 15419 days ago · 1 km deep · 33 km away
  14. 2.04 km NE of Willits, California · 15419 days ago · 3 km deep · 55 km away
  15. 1.53 km SSE of Hopland, California · 15420 days ago · 1 km deep · 27 km away
  16. 2.07 km W of Cobb, California · 15420 days ago · 1 km deep · 31 km away
  17. 1.68 km WSW of Cobb, California · 15420 days ago · 0 km deep · 32 km away
  18. 1.912 km N of Angwin, California · 15420 days ago · 2 km deep · 56 km away
  19. 1.711 km NNE of Angwin, California · 15420 days ago · -1 km deep · 59 km away
  20. 2.08 km WSW of Cobb, California · 15421 days ago · 3 km deep · 33 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1117973. Read Sun, Oct 4, 2026, 8:55 PM UTC.