California earthquakes

M1.8 earthquake 14 km E of Angwin, California

A magnitude 1.8 earthquake struck 14 km E of Angwin, California on Sat, Mar 16, 1991, 9:59 PM PST (05:59 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.3 7 km W 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1991-03-17 05:59:44 UTC
Depth
0.4 km (0.2 mi), shallow
Epicenter
38.553° N, 122.286° 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, 6.9 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
73°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 153 in the 60 days after this one and 94 in the 30 days before it.

After

  1. 1.59 km W of Cobb, California · 12986 days ago · 1 km deep · 56 km away
  2. 1.87 km WSW of Cobb, California · 12985 days ago · 1 km deep · 53 km away
  3. 3.37 km W of Cobb, California · 12985 days ago · 3 km deep · 54 km away
  4. 1.87 km W of Cobb, California · 12985 days ago · 3 km deep · 54 km away
  5. 1.97 km W of Cobb, California · 12985 days ago · 3 km deep · 54 km away
  6. 1.74 km WSW of Cobb, California · 12985 days ago · 1 km deep · 51 km away
  7. 1.64 km WSW of Cobb, California · 12984 days ago · 3 km deep · 50 km away
  8. 1.68 km W of Cobb, California · 12984 days ago · 2 km deep · 54 km away
  9. 1.514 km NE of Upper Lake, California · 12984 days ago · 1 km deep · 90 km away
  10. 1.65 km W of Cobb, California · 12984 days ago · 2 km deep · 52 km away
  11. 1.83 km SSW of Cobb, California · 12984 days ago · 2 km deep · 48 km away
  12. 1.97 km W of Cobb, California · 12984 days ago · 3 km deep · 54 km away
  13. 1.66 km SW of Cobb, California · 12984 days ago · 1 km deep · 50 km away
  14. 1.617 km NE of Clearlake, California · 12983 days ago · 14 km deep · 57 km away
  15. 2.38 km WNW of Cobb, California · 12983 days ago · 2 km deep · 56 km away
  16. 2.16 km WSW of Cobb, California · 12982 days ago · 1 km deep · 51 km away
  17. 1.85 km SW of Cobb, California · 12980 days ago · 0 km deep · 50 km away
  18. 1.66 km WNW of Cobb, California · 12980 days ago · 1 km deep · 55 km away
  19. 2.113 km WSW of Hopland, California · 12980 days ago · 0 km deep · 93 km away
  20. 1.71 km WSW of Concord, California · 12980 days ago · 9 km deep · 68 km away
  21. 1.515 km ENE of Angwin, California · 12979 days ago · 4 km deep · 11 km away
  22. 2.15 km SW of Cobb, California · 12979 days ago · 2 km deep · 50 km away
  23. 1.95 km N of Orinda, California · 12979 days ago · 4 km deep · 71 km away
  24. 2.26 km W of Cobb, California · 12979 days ago · 1 km deep · 53 km away
  25. 2.03 km SW of Cobb, California · 12978 days ago · 1 km deep · 48 km away
  26. 2.43 km NNW of Diablo, California · 12978 days ago · 0 km deep · 81 km away
  27. 2.13 km NNW of Diablo, California · 12978 days ago · 0 km deep · 81 km away
  28. 1.94 km W of Cobb, California · 12976 days ago · 0 km deep · 51 km away
  29. 1.59 km W of Cobb, California · 12976 days ago · 1 km deep · 57 km away
  30. 1.79 km WNW of Cobb, California · 12976 days ago · 2 km deep · 57 km away
  31. 1.69 km W of Cobb, California · 12975 days ago · 1 km deep · 56 km away
  32. 1.95 km SW of Cobb, California · 12975 days ago · 2 km deep · 50 km away
  33. 2.13 km E of Talmage, California · 12974 days ago · 6 km deep · 97 km away
  34. 1.65 km WSW of Cobb, California · 12974 days ago · 1 km deep · 51 km away
  35. 1.64 km WSW of Cobb, California · 12974 days ago · 2 km deep · 51 km away
  36. 2.25 km W of Cobb, California · 12974 days ago · -1 km deep · 53 km away
  37. 2.35 km W of Cobb, California · 12974 days ago · 1 km deep · 52 km away
  38. 1.96 km SSW of Calistoga, California · 12973 days ago · 3 km deep · 28 km away
  39. 1.77 km SSE of Cobb, California · 12973 days ago · 1 km deep · 43 km away
  40. 1.510 km W of Cobb, California · 12973 days ago · 2 km deep · 57 km away
  41. 1.87 km S of Cobb, California · 12972 days ago · 2 km deep · 45 km away
  42. 2.0Northern California · 12972 days ago · 1 km deep · 52 km away
  43. 1.95 km WSW of Cobb, California · 12972 days ago · 0 km deep · 50 km away
  44. 1.83 km SW of Cobb, California · 12972 days ago · 0 km deep · 49 km away
  45. 2.31 km S of Danville, California · 12971 days ago · 7 km deep · 87 km away
  46. 1.53 km SSW of Cobb, California · 12970 days ago · 2 km deep · 48 km away
  47. 1.64 km WNW of Cobb, California · 12970 days ago · 2 km deep · 53 km away
  48. 1.97 km WSW of Cobb, California · 12970 days ago · 1 km deep · 53 km away
  49. 1.94 km W of Cobb, California · 12970 days ago · 1 km deep · 52 km away
  50. 1.86 km SSE of Clayton, California · 12969 days ago · 17 km deep · 81 km away
  51. 2.18 km S of Cobb, California · 12969 days ago · 2 km deep · 43 km away
  52. 2.96 km WSW of Cobb, California · 12968 days ago · 0 km deep · 52 km away
  53. 2.47 km W of Cobb, California · 12966 days ago · 0 km deep · 55 km away
  54. 1.84 km W of Cobb, California · 12966 days ago · 1 km deep · 52 km away
  55. 1.87 km WNW of Cobb, California · 12966 days ago · 1 km deep · 55 km away
  56. 1.66 km E of Santa Rosa, California · 12965 days ago · 6 km deep · 33 km away
  57. 1.66 km SW of Cobb, California · 12965 days ago · -1 km deep · 50 km away
  58. 1.55 km WSW of Cobb, California · 12965 days ago · 0 km deep · 51 km away
  59. 1.85 km WSW of Cobb, California · 12965 days ago · 0 km deep · 51 km away
  60. 1.67 km WSW of Cobb, California · 12964 days ago · -1 km deep · 53 km away

The first 60 of 153.

Before

  1. 1.63 km NE of Clear Lake Riviera, California · 12986 days ago · -1 km deep · 58 km away
  2. 1.93 km NNE of Pittsburg, California · 12986 days ago · 16 km deep · 67 km away
  3. 1.95 km WSW of Cobb, California · 12986 days ago · 1 km deep · 52 km away
  4. 1.720 km NNE of Upper Lake, California · 12987 days ago · 4 km deep · 97 km away
  5. 2.616 km NNE of Lucerne, California · 12987 days ago · 9 km deep · 82 km away
  6. 1.516 km NE of Lucerne, California · 12987 days ago · 10 km deep · 81 km away
  7. 1.68 km W of Cobb, California · 12988 days ago · 1 km deep · 56 km away
  8. 1.55 km W of Cobb, California · 12988 days ago · 0 km deep · 52 km away
  9. 1.71 km SSE of Concord, California · 12988 days ago · 17 km deep · 69 km away
  10. 2.013 km NW of Moskowite Corner, California · 12989 days ago · 1 km deep · 1 km away
  11. 1.71 km ENE of Alamo, California · 12989 days ago · 6 km deep · 81 km away
  12. 2.913 km NW of Moskowite Corner, California · 12989 days ago · -1 km deep · 2 km away
  13. 1.94 km W of Cobb, California · 12989 days ago · 1 km deep · 52 km away
  14. 1.814 km NNW of Moskowite Corner, California · 12989 days ago · 1 km deep · 1 km away
  15. 1.87 km W of Cobb, California · 12989 days ago · 0 km deep · 55 km away
  16. 2.64 km WSW of Cobb, California · 12989 days ago · 2 km deep · 50 km away
  17. 2.16 km NE of Santa Rosa, California · 12990 days ago · 1 km deep · 33 km away
  18. 2.15 km WSW of Cobb, California · 12990 days ago · 0 km deep · 50 km away
  19. 1.76 km NW of Moskowite Corner, California · 12991 days ago · 1 km deep · 9 km away
  20. 1.76 km WSW of Calistoga, California · 12991 days ago · -1 km deep · 32 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc208151. Read Sun, Oct 4, 2026, 8:17 PM UTC.