California earthquakes

M1.6 earthquake 16 km ENE of Angwin, CA

A magnitude 1.6 earthquake struck 16 km ENE of Angwin, CA on Tue, Jan 12, 1988, 7:45 AM PST (15:45 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.4 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1988-01-12 15:45:23 UTC
Depth
8.1 km (5.0 mi), shallow
Epicenter
38.618° N, 122.269° 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, 1.7 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
128°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 165 in the 60 days after this one and 93 in the 30 days before it.

After

  1. 1.77 km WSW of Cobb, California · 14145 days ago · 1 km deep · 50 km away
  2. 1.78 km W of Cobb, California · 14145 days ago · 1 km deep · 53 km away
  3. 1.65 km WNW of Cobb, California · 14145 days ago · 2 km deep · 51 km away
  4. 1.50 km ENE of Benicia, California · 14145 days ago · 8 km deep · 64 km away
  5. 1.65 km SSW of Cobb, California · 14144 days ago · -1 km deep · 46 km away
  6. 2.13 km WSW of Antioch, California · 14144 days ago · 1 km deep · 78 km away
  7. 1.78 km WSW of Cobb, California · 14144 days ago · 3 km deep · 51 km away
  8. 2.28 km W of Cobb, California · 14143 days ago · 1 km deep · 54 km away
  9. 1.56 km WSW of Cobb, California · 14143 days ago · 3 km deep · 51 km away
  10. 1.84 km WSW of Cobb, California · 14143 days ago · 1 km deep · 49 km away
  11. 2.014 km WSW of Geyserville, California · 14143 days ago · 4 km deep · 69 km away
  12. 2.65 km WNW of Cobb, California · 14143 days ago · 2 km deep · 50 km away
  13. 1.75 km W of Cobb, California · 14143 days ago · 1 km deep · 51 km away
  14. 1.55 km W of Cobb, California · 14143 days ago · 1 km deep · 50 km away
  15. 1.87 km W of Cobb, California · 14143 days ago · 1 km deep · 53 km away
  16. 1.68 km W of Cobb, California · 14143 days ago · 1 km deep · 53 km away
  17. 1.712 km NW of Guinda, California · 14142 days ago · 9 km deep · 33 km away
  18. 2.48 km W of Cobb, California · 14141 days ago · -1 km deep · 53 km away
  19. 1.77 km WSW of Cobb, California · 14141 days ago · 1 km deep · 51 km away
  20. 2.02 km WSW of Geyserville, California · 14141 days ago · 11 km deep · 58 km away
  21. 1.611 km W of Cobb, California · 14141 days ago · 0 km deep · 56 km away
  22. 1.93 km N of San Leandro, California · 14140 days ago · 3 km deep · 97 km away
  23. 1.98 km WSW of Cobb, California · 14139 days ago · 0 km deep · 52 km away
  24. 3.05 km WNW of Cobb, California · 14139 days ago · -1 km deep · 51 km away
  25. 2.85 km W of Cobb, California · 14139 days ago · 0 km deep · 50 km away
  26. 1.95 km W of Cobb, California · 14139 days ago · 1 km deep · 51 km away
  27. 3.17 km WSW of Cobb, California · 14139 days ago · 1 km deep · 50 km away
  28. 3.17 km WSW of Cobb, California · 14139 days ago · 2 km deep · 50 km away
  29. 1.77 km WSW of Cobb, California · 14139 days ago · 1 km deep · 50 km away
  30. 1.78 km W of Cobb, California · 14139 days ago · 0 km deep · 53 km away
  31. 1.78 km SSW of Cobb, California · 14139 days ago · 3 km deep · 45 km away
  32. 2.8Northern California · 14138 days ago · 1 km deep · 48 km away
  33. 1.64 km SW of Cobb, California · 14138 days ago · 0 km deep · 47 km away
  34. 1.96 km W of Cobb, California · 14138 days ago · 0 km deep · 51 km away
  35. 1.68 km WNW of Cobb, California · 14136 days ago · 0 km deep · 54 km away
  36. 1.616 km SW of Cloverdale, California · 14136 days ago · 9 km deep · 78 km away
  37. 2.09 km E of Hidden Valley Lake, California · 14135 days ago · 6 km deep · 28 km away
  38. 1.7Northern California · 14135 days ago · 13 km deep · 92 km away
  39. 2.6Northern California · 14134 days ago · 0 km deep · 47 km away
  40. 1.94 km SW of Napa, California · 14134 days ago · 4 km deep · 39 km away
  41. 2.06 km W of Cobb, California · 14134 days ago · 2 km deep · 51 km away
  42. 2.56 km W of Cobb, California · 14134 days ago · 1 km deep · 51 km away
  43. 1.811 km E of Blackhawk, California · 14134 days ago · 5 km deep · 99 km away
  44. 2.09 km E of Hidden Valley Lake, California · 14134 days ago · 7 km deep · 28 km away
  45. 1.67 km W of Cobb, California · 14134 days ago · -1 km deep · 53 km away
  46. 2.16 km WSW of Cobb, California · 14134 days ago · 3 km deep · 50 km away
  47. 1.69 km E of Hidden Valley Lake, California · 14133 days ago · 5 km deep · 25 km away
  48. 2.49 km SW of Brentwood, California · 14133 days ago · 16 km deep · 95 km away
  49. 1.67 km WSW of Cobb, California · 14132 days ago · 1 km deep · 51 km away
  50. 1.85 km WSW of Cobb, California · 14132 days ago · 1 km deep · 50 km away
  51. 3.06 km WSW of Cobb, California · 14131 days ago · 1 km deep · 50 km away
  52. 1.67 km WSW of Cobb, California · 14131 days ago · -1 km deep · 51 km away
  53. 1.54 km WSW of Cobb, California · 14131 days ago · 2 km deep · 48 km away
  54. 2.21 km WNW of Concord, California · 14131 days ago · 15 km deep · 73 km away
  55. 2.14 km WSW of Cobb, California · 14131 days ago · 0 km deep · 48 km away
  56. 1.52 km NE of San Leandro, California · 14131 days ago · 4 km deep · 98 km away
  57. 2.07 km W of Cobb, California · 14131 days ago · 3 km deep · 52 km away
  58. 1.93 km NNW of Blackhawk, California · 14130 days ago · 17 km deep · 90 km away
  59. 1.72 km NNW of Blackhawk, California · 14130 days ago · 16 km deep · 91 km away
  60. 1.65 km SSW of Cobb, California · 14129 days ago · -1 km deep · 46 km away

The first 60 of 165.

Before

  1. 1.86 km WNW of Cobb, California · 14146 days ago · 0 km deep · 52 km away
  2. 2.16 km SSW of Cobb, California · 14146 days ago · -1 km deep · 45 km away
  3. 1.86 km WSW of Cobb, California · 14147 days ago · -1 km deep · 50 km away
  4. 1.67 km WSW of Cobb, California · 14147 days ago · 1 km deep · 50 km away
  5. 2.47 km WSW of Cobb, California · 14147 days ago · 1 km deep · 50 km away
  6. 2.31 km E of Walnut Creek, California · 14147 days ago · 6 km deep · 82 km away
  7. 1.917 km ESE of Hidden Valley Lake, California · 14148 days ago · 7 km deep · 16 km away
  8. 2.217 km ESE of Hidden Valley Lake, California · 14148 days ago · 8 km deep · 16 km away
  9. 2.46 km W of Cobb, California · 14148 days ago · 3 km deep · 51 km away
  10. 1.95 km SSW of Cobb, California · 14148 days ago · 1 km deep · 46 km away
  11. 2.17 km W of Cobb, California · 14148 days ago · 3 km deep · 52 km away
  12. 1.64 km WNW of Cobb, California · 14149 days ago · 2 km deep · 50 km away
  13. 2.27 km WNW of Princeton, California · 14149 days ago · 24 km deep · 92 km away
  14. 2.67 km WSW of Cobb, California · 14149 days ago · 1 km deep · 51 km away
  15. 1.86 km SW of Cobb, California · 14149 days ago · 2 km deep · 47 km away
  16. 1.94 km WSW of Cobb, California · 14149 days ago · 2 km deep · 48 km away
  17. 1.96 km W of Cobb, California · 14149 days ago · 2 km deep · 51 km away
  18. 1.86 km WNW of Cobb, California · 14149 days ago · 3 km deep · 52 km away
  19. 1.54 km WSW of Cobb, California · 14150 days ago · 0 km deep · 49 km away
  20. 1.75 km W of Cobb, California · 14150 days ago · 0 km deep · 51 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc10086224. Read Mon, Oct 5, 2026, 4:26 AM UTC.