California earthquakes

M1.7 earthquake 11 km NNE of Angwin, California

A magnitude 1.7 earthquake struck 11 km NNE of Angwin, California on Mon, Jul 16, 1984, 7:20 AM PDT (14:20 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.2 7 km SW of Cobb, California. This one was a foreshock.

Angwin 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1984-07-16 14:20:41 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
38.676° N, 122.419° 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 0.8 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
132°
Stations used
8

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 82 in the 30 days before it.

After

  1. 1.912 km N of Angwin, California · 15418 days ago · 2 km deep · 3 km away
  2. 1.68 km WSW of Cobb, California · 15418 days ago · 0 km deep · 38 km away
  3. 2.07 km W of Cobb, California · 15417 days ago · 1 km deep · 37 km away
  4. 1.53 km SSE of Hopland, California · 15417 days ago · 1 km deep · 66 km away
  5. 1.94 km WSW of Cobb, California · 15417 days ago · 1 km deep · 33 km away
  6. 1.89 km SSW of Calistoga, California · 15416 days ago · 5 km deep · 26 km away
  7. 2.18 km SSW of Lakeport, California · 15416 days ago · 4 km deep · 56 km away
  8. 2.70 km WSW of Lakeport, California · 15416 days ago · 21 km deep · 59 km away
  9. 2.57 km WSW of Cobb, California · 15416 days ago · 0 km deep · 36 km away
  10. 1.72 km NE of Lakeport, California · 15416 days ago · 3 km deep · 59 km away
  11. 1.81 km WNW of Concord, California · 15416 days ago · 14 km deep · 84 km away
  12. 2.09 km E of Calpella, California · 15415 days ago · 2 km deep · 84 km away
  13. 2.57 km W of Cobb, California · 15415 days ago · 3 km deep · 37 km away
  14. 1.75 km W of Cobb, California · 15415 days ago · 1 km deep · 35 km away
  15. 1.92 km ENE of Soda Bay, California · 15414 days ago · 3 km deep · 47 km away
  16. 2.516 km NNE of Upper Lake, California · 15414 days ago · 7 km deep · 77 km away
  17. 1.78 km W of Cobb, California · 15414 days ago · 0 km deep · 38 km away
  18. 1.63 km S of Nice, California · 15414 days ago · 12 km deep · 59 km away
  19. 1.65 km SW of Cobb, California · 15414 days ago · 1 km deep · 32 km away
  20. 1.76 km W of Cobb, California · 15414 days ago · 2 km deep · 36 km away
  21. 1.66 km W of Cobb, California · 15413 days ago · 2 km deep · 36 km away
  22. 2.25 km SW of Cobb, California · 15413 days ago · 0 km deep · 33 km away
  23. 1.65 km SW of Cobb, California · 15413 days ago · -1 km deep · 34 km away
  24. 1.67 km WSW of Cobb, California · 15413 days ago · 3 km deep · 36 km away
  25. 2.35 km SW of Cobb, California · 15413 days ago · 0 km deep · 33 km away
  26. 2.16 km W of Cobb, California · 15413 days ago · 2 km deep · 36 km away
  27. 1.5Northern California · 15412 days ago · 1 km deep · 37 km away
  28. 1.56 km WSW of Cobb, California · 15411 days ago · 4 km deep · 36 km away
  29. 2.23 km SE of Clear Lake Riviera, California · 15411 days ago · -1 km deep · 36 km away
  30. 1.610 km W of Geyserville, California · 15411 days ago · -1 km deep · 52 km away
  31. 1.96 km W of Cobb, California · 15410 days ago · 3 km deep · 37 km away
  32. 1.68 km W of Cobb, California · 15410 days ago · 1 km deep · 39 km away
  33. 2.05 km W of Cobb, California · 15410 days ago · 2 km deep · 36 km away
  34. 1.618 km NE of Potter Valley, California · 15409 days ago · 7 km deep · 94 km away
  35. 1.77 km WSW of Cobb, California · 15409 days ago · 0 km deep · 35 km away
  36. 1.66 km W of Cobb, California · 15409 days ago · 2 km deep · 36 km away
  37. 1.611 km E of Angwin, California · 15408 days ago · 2 km deep · 13 km away
  38. 2.07 km W of Cobb, California · 15407 days ago · 3 km deep · 37 km away
  39. 1.64 km SW of Calistoga, California · 15407 days ago · -1 km deep · 22 km away
  40. 3.27 km SW of Cobb, California · 15407 days ago · 3 km deep · 33 km away
  41. 1.57 km SW of Cobb, California · 15407 days ago · 3 km deep · 33 km away
  42. 1.57 km WSW of Cobb, California · 15406 days ago · 2 km deep · 37 km away
  43. 2.36 km WSW of Cobb, California · 15406 days ago · 3 km deep · 36 km away
  44. 2.25 km WSW of Cobb, California · 15405 days ago · 0 km deep · 35 km away
  45. 1.98 km WSW of Cobb, California · 15405 days ago · 0 km deep · 37 km away
  46. 1.74 km SSE of Calpella, California · 15405 days ago · 7 km deep · 88 km away
  47. 2.07 km W of Cobb, California · 15405 days ago · 0 km deep · 37 km away
  48. 1.97 km WSW of Cobb, California · 15405 days ago · 1 km deep · 36 km away
  49. 1.87 km W of Cobb, California · 15405 days ago · 0 km deep · 37 km away
  50. 1.68 km W of Cobb, California · 15405 days ago · 3 km deep · 38 km away
  51. 2.45 km NNW of Guinda, California · 15404 days ago · 0 km deep · 28 km away
  52. 1.78 km WSW of Cobb, California · 15404 days ago · 3 km deep · 37 km away
  53. 2.67 km W of Cobb, California · 15404 days ago · 2 km deep · 37 km away
  54. 2.21 km S of American Canyon, California · 15404 days ago · 0 km deep · 59 km away
  55. 3.06 km W of Cobb, California · 15404 days ago · 3 km deep · 36 km away
  56. 2.326 km ENE of Potter Valley, California · 15403 days ago · 4 km deep · 94 km away
  57. 2.315 km NE of Lucerne, California · 15403 days ago · 0 km deep · 64 km away
  58. 2.0Northern California · 15403 days ago · 0 km deep · 38 km away
  59. 2.16 km W of Cobb, California · 15402 days ago · 3 km deep · 37 km away
  60. 1.66 km W of Cobb, California · 15402 days ago · 3 km deep · 37 km away

The first 60 of 166.

Before

  1. 2.20 km W of Concord, California · 15418 days ago · 15 km deep · 84 km away
  2. 2.08 km WSW of Cobb, California · 15419 days ago · 3 km deep · 36 km away
  3. 1.58 km WSW of Cobb, California · 15419 days ago · 2 km deep · 37 km away
  4. 1.75 km WSW of Cobb, California · 15419 days ago · 0 km deep · 34 km away
  5. 1.75 km WSW of Cobb, California · 15419 days ago · 1 km deep · 34 km away
  6. 2.07 km W of Cobb, California · 15419 days ago · 3 km deep · 37 km away
  7. 1.87 km W of Cobb, California · 15419 days ago · 1 km deep · 38 km away
  8. 1.77 km W of Cobb, California · 15419 days ago · 1 km deep · 38 km away
  9. 1.89 km WSW of Cobb, California · 15420 days ago · 2 km deep · 38 km away
  10. 1.95 km SW of Cobb, California · 15421 days ago · 0 km deep · 33 km away
  11. 1.84 km WSW of Calpella, California · 15421 days ago · -1 km deep · 95 km away
  12. 1.67 km W of Cobb, California · 15421 days ago · 3 km deep · 37 km away
  13. 1.515 km SE of Hidden Valley Lake, California · 15421 days ago · 8 km deep · 5 km away
  14. 1.65 km WSW of Cobb, California · 15421 days ago · -1 km deep · 33 km away
  15. 2.06 km W of Cobb, California · 15421 days ago · 3 km deep · 37 km away
  16. 1.516 km ENE of Potter Valley, California · 15422 days ago · 11 km deep · 91 km away
  17. 1.66 km W of Cobb, California · 15422 days ago · 0 km deep · 37 km away
  18. 1.86 km W of Cobb, California · 15422 days ago · 2 km deep · 36 km away
  19. 1.50 km E of Larkfield-Wikiup, California · 15422 days ago · 2 km deep · 33 km away
  20. 1.84 km S of Cobb, California · 15422 days ago · 2 km deep · 29 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1117669. Read Fri, Oct 2, 2026, 3:50 PM UTC.