California earthquakes

M1.5 earthquake 12 km E of Angwin, California

A magnitude 1.5 earthquake struck 12 km E of Angwin, California on Tue, May 19, 1981, 7:17 PM PDT (02:17 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.5 18 km WSW 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
1.5 (md), micro
Local time
UTC
1981-05-20 02:17:58 UTC
Depth
4.5 km (2.8 mi), shallow
Epicenter
38.592° N, 122.304° 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, 5.5 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
84°
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: 102 in the 60 days after this one and 68 in the 30 days before it.

After

  1. 1.97 km WSW of Cobb, California · 16565 days ago · 2 km deep · 50 km away
  2. 1.86 km W of Cobb, California · 16565 days ago · 2 km deep · 49 km away
  3. 1.76 km WSW of Cobb, California · 16565 days ago · 1 km deep · 49 km away
  4. 1.74 km WSW of Cobb, California · 16565 days ago · 4 km deep · 47 km away
  5. 2.27 km W of Cobb, California · 16565 days ago · 3 km deep · 50 km away
  6. 1.71 km NNW of Lincoln, California · 16564 days ago · 6 km deep · 94 km away
  7. 1.76 km W of Cobb, California · 16563 days ago · 1 km deep · 49 km away
  8. 2.021 km ENE of Potter Valley, California · 16562 days ago · 6 km deep · 100 km away
  9. 2.22 km NNE of Upper Lake, California · 16562 days ago · 0 km deep · 83 km away
  10. 1.82 km SE of Clear Lake Riviera, California · 16562 days ago · 4 km deep · 52 km away
  11. 1.55 km WSW of Cobb, California · 16561 days ago · 2 km deep · 48 km away
  12. 2.511 km N of Cloverdale, California · 16561 days ago · 3 km deep · 69 km away
  13. 1.710 km NNE of Cloverdale, California · 16561 days ago · 3 km deep · 68 km away
  14. 1.50 km SE of North Gate, California · 16559 days ago · 10 km deep · 81 km away
  15. 1.78 km WSW of Cobb, California · 16559 days ago · 1 km deep · 50 km away
  16. 1.86 km WSW of Cobb, California · 16558 days ago · 3 km deep · 49 km away
  17. 1.69 km E of Hidden Valley Lake, California · 16558 days ago · 7 km deep · 28 km away
  18. 1.95 km WSW of Cobb, California · 16558 days ago · -1 km deep · 48 km away
  19. 1.94 km SSW of Lagunitas-Forest Knolls, California · 16557 days ago · 0 km deep · 76 km away
  20. 2.06 km W of Cobb, California · 16557 days ago · 2 km deep · 50 km away
  21. 2.16 km W of Cobb, California · 16557 days ago · 0 km deep · 50 km away
  22. 1.98 km ENE of Larkfield-Wikiup, California · 16557 days ago · 6 km deep · 31 km away
  23. 2.76 km W of Cobb, California · 16556 days ago · 1 km deep · 49 km away
  24. 2.46 km WSW of Cobb, California · 16556 days ago · 1 km deep · 49 km away
  25. 2.14 km S of Cobb, California · 16556 days ago · 0 km deep · 42 km away
  26. 1.67 km WSW of Cobb, California · 16556 days ago · 1 km deep · 50 km away
  27. 2.211 km SW of Brentwood, California · 16555 days ago · 19 km deep · 95 km away
  28. 1.69 km WSW of Cobb, California · 16555 days ago · -1 km deep · 51 km away
  29. 1.810 km SW of Brentwood, California · 16554 days ago · 15 km deep · 95 km away
  30. 1.79 km ENE of Hidden Valley Lake, California · 16554 days ago · 7 km deep · 29 km away
  31. 1.83 km ESE of Clear Lake Riviera, California · 16554 days ago · -1 km deep · 51 km away
  32. 1.66 km W of Cobb, California · 16554 days ago · 2 km deep · 50 km away
  33. 2.015 km NNW of Guinda, California · 16553 days ago · 9 km deep · 41 km away
  34. 3.012 km E of Blackhawk, California · 16551 days ago · 16 km deep · 95 km away
  35. 1.79 km E of Hidden Valley Lake, California · 16550 days ago · 7 km deep · 29 km away
  36. 1.78 km WSW of Cobb, California · 16549 days ago · 3 km deep · 50 km away
  37. 2.26 km WSW of Calistoga, California · 16549 days ago · 5 km deep · 30 km away
  38. 2.114 km NNW of Guinda, California · 16548 days ago · 8 km deep · 40 km away
  39. 1.69 km WSW of Cobb, California · 16548 days ago · 2 km deep · 51 km away
  40. 2.56 km WSW of Cobb, California · 16546 days ago · 4 km deep · 49 km away
  41. 1.85 km WSW of Cobb, California · 16545 days ago · 1 km deep · 47 km away
  42. 2.39 km WSW of Cobb, California · 16544 days ago · 2 km deep · 51 km away
  43. 1.74 km S of Cobb, California · 16543 days ago · 1 km deep · 42 km away
  44. 2.15 km SW of Cobb, California · 16540 days ago · 1 km deep · 46 km away
  45. 1.6Northern California · 16540 days ago · 1 km deep · 51 km away
  46. 1.73 km E of Windsor, California · 16539 days ago · 4 km deep · 41 km away
  47. 1.56 km WNW of Daly City, California · 16539 days ago · 9 km deep · 97 km away
  48. 2.18 km W of Cobb, California · 16539 days ago · 1 km deep · 51 km away
  49. 1.86 km W of Cobb, California · 16539 days ago · 3 km deep · 50 km away
  50. 1.75 km SW of Cobb, California · 16539 days ago · -1 km deep · 46 km away
  51. 1.76 km W of Cobb, California · 16538 days ago · 4 km deep · 49 km away
  52. 2.35 km SW of Cobb, CA · 16535 days ago · -1 km deep · 45 km away
  53. 1.76 km W of Lower Lake, California · 16535 days ago · 3 km deep · 47 km away
  54. 2.57 km WSW of Cobb, California · 16535 days ago · 1 km deep · 49 km away
  55. 1.610 km ENE of Blackhawk, California · 16535 days ago · 9 km deep · 94 km away
  56. 1.67 km WSW of Cobb, California · 16535 days ago · 3 km deep · 49 km away
  57. 1.66 km W of Cobb, California · 16534 days ago · 4 km deep · 50 km away
  58. 1.65 km NNE of Rohnert Park, California · 16533 days ago · 16 km deep · 40 km away
  59. 3.518 km WSW of Williams, California · 16533 days ago · 12 km deep · 56 km away
  60. 1.66 km W of Cobb, California · 16533 days ago · 0 km deep · 49 km away

The first 60 of 102.

Before

  1. 2.216 km SSE of Sea Ranch, California · 16566 days ago · 1 km deep · 94 km away
  2. 1.64 km WSW of Cobb, California · 16567 days ago · 2 km deep · 47 km away
  3. 1.57 km WSW of Cobb, California · 16567 days ago · 2 km deep · 50 km away
  4. 1.83 km E of Clear Lake Riviera, California · 16567 days ago · 3 km deep · 52 km away
  5. 1.53 km E of Clear Lake Riviera, California · 16567 days ago · -1 km deep · 52 km away
  6. 1.63 km ENE of Clear Lake Riviera, California · 16567 days ago · 3 km deep · 53 km away
  7. 3.00 km ESE of North Gate, California · 16568 days ago · 12 km deep · 81 km away
  8. 2.37 km WSW of Cobb, California · 16568 days ago · 4 km deep · 49 km away
  9. 2.04 km WSW of Cobb, California · 16569 days ago · 2 km deep · 47 km away
  10. 1.811 km SW of Brentwood, California · 16570 days ago · 20 km deep · 94 km away
  11. 1.710 km SSW of Brentwood, California · 16570 days ago · 21 km deep · 95 km away
  12. 1.910 km SW of Brentwood, California · 16570 days ago · 19 km deep · 94 km away
  13. 1.611 km E of Blackhawk, California · 16570 days ago · 11 km deep · 96 km away
  14. 1.714 km SW of Guinda, California · 16571 days ago · 5 km deep · 16 km away
  15. 2.313 km WSW of Esparto, California · 16571 days ago · 4 km deep · 14 km away
  16. 2.314 km S of Guinda, California · 16571 days ago · 4 km deep · 14 km away
  17. 2.011 km E of Geyserville, California · 16572 days ago · 6 km deep · 42 km away
  18. 2.16 km NE of Hidden Valley Lake, California · 16573 days ago · 57 km deep · 33 km away
  19. 1.916 km WSW of Williams, California · 16573 days ago · 2 km deep · 58 km away
  20. 1.75 km WSW of Lower Lake, California · 16573 days ago · 4 km deep · 46 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1063814. Read Sun, Sep 27, 2026, 3:32 AM UTC.