California earthquakes

M1.8 earthquake 5 km W of Angwin, California

A magnitude 1.8 earthquake struck 5 km W of Angwin, California on Fri, May 3, 1985, 3:50 PM PDT (22:50 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.6 9 km ESE of Williams, 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
1.8 (md), micro
Local time
UTC
1985-05-03 22:50:52 UTC
Depth
7.8 km (4.8 mi), shallow
Epicenter
38.584° N, 122.507° 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, 1.3 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
190°, poorly surrounded by stations
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: 182 in the 60 days after this one and 102 in the 30 days before it.

After

  1. 1.86 km W of Cobb, California · 15120 days ago · -1 km deep · 37 km away
  2. 2.15 km SSW of Cobb, California · 15120 days ago · 1 km deep · 31 km away
  3. 1.712 km WNW of Cobb, California · 15120 days ago · 1 km deep · 43 km away
  4. 1.610 km NW of Cobb, California · 15119 days ago · 2 km deep · 43 km away
  5. 2.0Northern California · 15118 days ago · 1 km deep · 76 km away
  6. 1.67 km W of Cobb, California · 15118 days ago · 3 km deep · 37 km away
  7. 1.6Northern California · 15118 days ago · 3 km deep · 37 km away
  8. 1.54 km S of Cobb, California · 15118 days ago · 2 km deep · 29 km away
  9. 1.88 km W of Cobb, California · 15116 days ago · 1 km deep · 38 km away
  10. 1.68 km W of Cobb, California · 15116 days ago · 1 km deep · 38 km away
  11. 1.86 km W of Cobb, California · 15115 days ago · 0 km deep · 37 km away
  12. 2.36 km W of Cobb, California · 15115 days ago · 0 km deep · 37 km away
  13. 1.56 km W of Cobb, California · 15115 days ago · 0 km deep · 37 km away
  14. 1.71 km NNE of El Cerrito, California · 15115 days ago · 5 km deep · 75 km away
  15. 1.69 km WSW of Cobb, California · 15115 days ago · 2 km deep · 36 km away
  16. 1.57 km WSW of Cobb, California · 15114 days ago · 2 km deep · 36 km away
  17. 1.55 km SW of Cobb, California · 15114 days ago · 0 km deep · 32 km away
  18. 2.36 km W of Cobb, California · 15114 days ago · 2 km deep · 36 km away
  19. 2.27 km W of Cobb, California · 15114 days ago · 2 km deep · 37 km away
  20. 2.14 km WSW of Cobb, California · 15114 days ago · 1 km deep · 34 km away
  21. 2.86 km WSW of Cobb, California · 15113 days ago · 0 km deep · 35 km away
  22. 2.27 km WSW of Cobb, California · 15113 days ago · 1 km deep · 35 km away
  23. 2.16 km W of Cobb, California · 15113 days ago · 3 km deep · 36 km away
  24. 1.86 km W of Cobb, California · 15112 days ago · 3 km deep · 37 km away
  25. 1.97 km W of Cobb, California · 15111 days ago · 1 km deep · 38 km away
  26. 2.15 km ENE of Calpella, California · 15111 days ago · 6 km deep · 92 km away
  27. 2.13 km SW of Cobb, California · 15111 days ago · 1 km deep · 31 km away
  28. 1.619 km E of Potter Valley, California · 15110 days ago · 5 km deep · 92 km away
  29. 2.17 km WSW of Cobb, California · 15110 days ago · 1 km deep · 36 km away
  30. 1.94 km ENE of Calpella, California · 15110 days ago · 0 km deep · 92 km away
  31. 2.67 km W of Cobb, California · 15110 days ago · 3 km deep · 37 km away
  32. 1.68 km WSW of Cobb, California · 15110 days ago · 3 km deep · 36 km away
  33. 1.617 km NE of Upper Lake, California · 15109 days ago · 4 km deep · 82 km away
  34. 1.67 km W of Cobb, California · 15109 days ago · 0 km deep · 37 km away
  35. 1.95 km SW of Cobb, California · 15109 days ago · 1 km deep · 31 km away
  36. 2.07 km WSW of Cobb, California · 15109 days ago · 2 km deep · 36 km away
  37. 1.56 km NW of Cobb, California · 15109 days ago · 1 km deep · 39 km away
  38. 2.46 km W of Cobb, California · 15109 days ago · 3 km deep · 36 km away
  39. 1.76 km W of Cobb, California · 15109 days ago · 3 km deep · 36 km away
  40. 1.59 km W of Cobb, California · 15108 days ago · 1 km deep · 38 km away
  41. 2.48 km WSW of Cobb, California · 15108 days ago · 3 km deep · 36 km away
  42. 1.87 km WSW of Cobb, California · 15108 days ago · 3 km deep · 35 km away
  43. 2.37 km WSW of Cobb, California · 15108 days ago · 4 km deep · 36 km away
  44. 1.820 km ENE of Clearlake, California · 15107 days ago · 6 km deep · 51 km away
  45. 1.67 km WSW of Cobb, California · 15107 days ago · 1 km deep · 35 km away
  46. 2.14 km ENE of Hopland, California · 15107 days ago · 3 km deep · 66 km away
  47. 2.08 km WSW of Cobb, California · 15107 days ago · 3 km deep · 35 km away
  48. 1.612 km WSW of Williams, CA · 15106 days ago · 7 km deep · 62 km away
  49. 1.710 km WSW of Cobb, California · 15106 days ago · 1 km deep · 38 km away
  50. 2.88 km WSW of Meridian, California · 15106 days ago · 0 km deep · 72 km away
  51. 1.71 km ESE of Angwin, California · 15105 days ago · 8 km deep · 7 km away
  52. 2.35 km W of Cobb, California · 15105 days ago · 0 km deep · 36 km away
  53. 1.95 km W of Cobb, California · 15105 days ago · 0 km deep · 36 km away
  54. 1.95 km W of Cobb, California · 15105 days ago · 0 km deep · 36 km away
  55. 2.35 km W of Meridian, California · 15104 days ago · 9 km deep · 78 km away
  56. 2.66 km SSW of Colusa, California · 15104 days ago · 21 km deep · 76 km away
  57. 1.52 km N of Healdsburg, California · 15104 days ago · 4 km deep · 32 km away
  58. 1.57 km W of Cobb, California · 15104 days ago · 4 km deep · 37 km away
  59. 1.66 km W of Cobb, California · 15104 days ago · 2 km deep · 36 km away
  60. 1.72 km NW of Healdsburg, California · 15104 days ago · 7 km deep · 33 km away

The first 60 of 182.

Before

  1. 2.321 km WSW of Williams, California · 15123 days ago · 0 km deep · 58 km away
  2. 1.77 km W of Cobb, California · 15123 days ago · 1 km deep · 36 km away
  3. 2.16 km W of Cobb, California · 15123 days ago · 3 km deep · 37 km away
  4. 2.57 km SW of Meridian, California · 15124 days ago · 10 km deep · 73 km away
  5. 2.55 km WSW of Cobb, California · 15124 days ago · 3 km deep · 33 km away
  6. 1.77 km WSW of Cobb, California · 15124 days ago · 1 km deep · 35 km away
  7. 1.85 km SW of Cobb, California · 15125 days ago · 2 km deep · 33 km away
  8. 2.06 km WNW of Guinda, California · 15125 days ago · 3 km deep · 36 km away
  9. 2.45 km SW of Cobb, California · 15125 days ago · 0 km deep · 33 km away
  10. 1.77 km WSW of Cobb, California · 15125 days ago · 1 km deep · 35 km away
  11. 1.59 km W of Cobb, California · 15125 days ago · 1 km deep · 38 km away
  12. 1.69 km W of Cobb, California · 15125 days ago · 1 km deep · 38 km away
  13. 2.33 km SSE of North Gate, California · 15125 days ago · 10 km deep · 91 km away
  14. 1.66 km W of Cobb, California · 15125 days ago · -1 km deep · 37 km away
  15. 1.66 km W of Cobb, California · 15125 days ago · -1 km deep · 37 km away
  16. 2.74 km W of Cobb, California · 15125 days ago · 0 km deep · 36 km away
  17. 2.1Northern California · 15126 days ago · 2 km deep · 22 km away
  18. 1.7Northern California · 15126 days ago · 2 km deep · 35 km away
  19. 2.13 km ESE of Berkeley, California · 15126 days ago · 8 km deep · 84 km away
  20. 1.72 km SE of Pittsburg, California · 15127 days ago · 16 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1127777. Read Sat, Sep 26, 2026, 12:14 PM UTC.