California earthquakes

M1.7 earthquake 4 km NNE of Lucerne, California

A magnitude 1.7 earthquake struck 4 km NNE of Lucerne, California on Sat, Feb 9, 1985, 7:50 AM PST (15:50 UTC), 17 km (10 mi) below the surface.

A larger quake followed: M3.1 Northern California. This one was a foreshock.

Lucerne 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
1.7 (md), micro
Local time
UTC
1985-02-09 15:50:34 UTC
Depth
16.8 km (10.4 mi), shallow
Epicenter
39.130° N, 122.777° 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 0.5 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
179°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 189 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 3.1Northern California · 15177 days ago · 3 km deep · 34 km away
  2. 2.46 km NNE of Cloverdale, California · 15177 days ago · 18 km deep · 35 km away
  3. 1.56 km W of Cobb, California · 15176 days ago · 3 km deep · 34 km away
  4. 1.67 km W of Cobb, California · 15176 days ago · 4 km deep · 35 km away
  5. 1.7Northern California · 15176 days ago · 5 km deep · 48 km away
  6. 2.82 km SE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 23 km away
  7. 3.52 km SE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 23 km away
  8. 2.94 km SE of Clear Lake Riviera, California · 15175 days ago · -1 km deep · 24 km away
  9. 1.82 km SE of Clear Lake Riviera, California · 15175 days ago · 1 km deep · 23 km away
  10. 1.92 km S of Clear Lake Riviera, California · 15175 days ago · -1 km deep · 23 km away
  11. 1.93 km SE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 24 km away
  12. 1.92 km ESE of Clear Lake Riviera, California · 15175 days ago · 4 km deep · 21 km away
  13. 1.63 km SSE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 24 km away
  14. 1.61 km NNE of Clear Lake Riviera, California · 15175 days ago · 4 km deep · 19 km away
  15. 2.22 km SE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 23 km away
  16. 1.83 km SSW of Clear Lake Riviera, California · 15175 days ago · -1 km deep · 23 km away
  17. 2.52 km SE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 23 km away
  18. 2.11 km SSE of Clear Lake Riviera, California · 15175 days ago · 0 km deep · 22 km away
  19. 1.92 km SSE of Clear Lake Riviera, California · 15175 days ago · 0 km deep · 23 km away
  20. 1.82 km SSE of Hopland, California · 15175 days ago · 20 km deep · 35 km away
  21. 1.82 km SSE of Clear Lake Riviera, California · 15175 days ago · 1 km deep · 23 km away
  22. 2.02 km SSE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 23 km away
  23. 2.83 km SSE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 24 km away
  24. 2.83 km SSE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 23 km away
  25. 2.53 km S of Clear Lake Riviera, California · 15175 days ago · 0 km deep · 23 km away
  26. 1.63 km ESE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 22 km away
  27. 2.13 km SSE of Clear Lake Riviera, California · 15175 days ago · 3 km deep · 23 km away
  28. 1.52 km SSE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 23 km away
  29. 1.62 km SE of Clear Lake Riviera, California · 15175 days ago · 4 km deep · 23 km away
  30. 1.52 km SSE of Clear Lake Riviera, California · 15175 days ago · 3 km deep · 23 km away
  31. 2.02 km SE of Clear Lake Riviera, California · 15175 days ago · 2 km deep · 23 km away
  32. 1.812 km ENE of Sea Ranch, California · 15175 days ago · 4 km deep · 63 km away
  33. 1.86 km W of Cobb, California · 15175 days ago · 2 km deep · 35 km away
  34. 1.6Northern California · 15175 days ago · 3 km deep · 23 km away
  35. 1.83 km ESE of Clear Lake Riviera, California · 15175 days ago · -1 km deep · 23 km away
  36. 2.52 km SSE of Clear Lake Riviera, California · 15175 days ago · 0 km deep · 22 km away
  37. 2.45 km SW of Cobb, California · 15175 days ago · 0 km deep · 38 km away
  38. 1.84 km ESE of Clear Lake Riviera, California · 15175 days ago · 5 km deep · 23 km away
  39. 1.66 km SSE of Kelseyville, California · 15175 days ago · 4 km deep · 23 km away
  40. 2.15 km WSW of Clear Lake Riviera, California · 15174 days ago · 4 km deep · 23 km away
  41. 1.86 km WSW of Cobb, California · 15174 days ago · 4 km deep · 36 km away
  42. 1.610 km W of Cobb, California · 15174 days ago · 8 km deep · 33 km away
  43. 3.28 km W of Cobb, California · 15174 days ago · 0 km deep · 35 km away
  44. 1.617 km WNW of Brooktrails, California · 15174 days ago · 1 km deep · 79 km away
  45. 2.08 km E of Hidden Valley Lake, California · 15174 days ago · 2 km deep · 46 km away
  46. 2.17 km WSW of Cobb, California · 15173 days ago · 0 km deep · 36 km away
  47. 2.56 km W of Cobb, California · 15173 days ago · 3 km deep · 34 km away
  48. 1.96 km SW of Cobb, California · 15173 days ago · 1 km deep · 38 km away
  49. 1.65 km WSW of Cobb, California · 15173 days ago · 0 km deep · 37 km away
  50. 2.05 km W of Cobb, California · 15172 days ago · 1 km deep · 34 km away
  51. 1.55 km W of Cobb, California · 15172 days ago · 0 km deep · 34 km away
  52. 2.37 km W of Cobb, California · 15171 days ago · 0 km deep · 34 km away
  53. 1.911 km NNE of Comptche, California · 15171 days ago · 2 km deep · 71 km away
  54. 1.92 km SSE of Clear Lake Riviera, California · 15171 days ago · 1 km deep · 23 km away
  55. 2.02 km SSE of Clear Lake Riviera, California · 15171 days ago · 0 km deep · 23 km away
  56. 1.63 km E of Clear Lake Riviera, California · 15170 days ago · 0 km deep · 22 km away
  57. 1.711 km SE of Hopland, California · 15170 days ago · 2 km deep · 32 km away
  58. 1.57 km W of Cobb, California · 15170 days ago · 0 km deep · 35 km away
  59. 2.57 km W of Cobb, California · 15169 days ago · 2 km deep · 35 km away
  60. 1.86 km W of Glen Ellen, California · 15169 days ago · 2 km deep · 87 km away

The first 60 of 189.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc43065. Read Tue, Sep 22, 2026, 11:35 AM UTC.