California earthquakes

M1.7 earthquake 8 km ESE of Willits, California

A magnitude 1.7 earthquake struck 8 km ESE of Willits, California on Sat, May 28, 1988, 10:56 AM PDT (17:56 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.6 7 km W of Cobb, California. This one was a foreshock.

Willits 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
1988-05-28 17:56:40 UTC
Depth
2.8 km (1.8 mi), shallow
Epicenter
39.367° N, 123.268° 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 2.9 km horizontally, 6.9 km in depth
Magnitude uncertainty
±0.01
Depth from
From location
Station coverage gap
263°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 167 in the 60 days after this one and 83 in the 30 days before it.

After

  1. 2.122 km NE of Potter Valley, California · 14008 days ago · 8 km deep · 31 km away
  2. 2.65 km SSW of Cobb, California · 14007 days ago · 0 km deep · 79 km away
  3. 1.64 km SW of Cobb, California · 14007 days ago · 1 km deep · 78 km away
  4. 2.18 km W of Cobb, California · 14007 days ago · 0 km deep · 72 km away
  5. 3.56 km WSW of Cobb, California · 14006 days ago · 3 km deep · 74 km away
  6. 2.27 km WSW of Cobb, California · 14006 days ago · 3 km deep · 74 km away
  7. 1.66 km WSW of Cobb, California · 14006 days ago · 3 km deep · 74 km away
  8. 3.06 km W of Cobb, California · 14005 days ago · 3 km deep · 73 km away
  9. 1.59 km E of Hidden Valley Lake, California · 14005 days ago · 7 km deep · 95 km away
  10. 2.17 km W of Cobb, California · 14005 days ago · 3 km deep · 73 km away
  11. 2.34 km SW of Cobb, California · 14005 days ago · 1 km deep · 78 km away
  12. 1.917 km NNE of Upper Lake, California · 14005 days ago · 4 km deep · 36 km away
  13. 1.74 km WSW of Cobb, California · 14005 days ago · 2 km deep · 75 km away
  14. 2.16 km WNW of Cobb, California · 14004 days ago · 1 km deep · 71 km away
  15. 1.64 km SW of Cobb, California · 14004 days ago · 1 km deep · 78 km away
  16. 1.87 km SE of Sea Ranch, California · 14004 days ago · 2 km deep · 79 km away
  17. 1.622 km NE of Potter Valley, California · 14004 days ago · 8 km deep · 31 km away
  18. 2.5Northern California · 14003 days ago · 0 km deep · 73 km away
  19. 1.88 km W of Cobb, California · 14003 days ago · 1 km deep · 72 km away
  20. 1.7Northern California · 14003 days ago · 1 km deep · 73 km away
  21. 3.1Northern California · 14003 days ago · 2 km deep · 74 km away
  22. 1.69 km W of Cobb, California · 14003 days ago · 1 km deep · 72 km away
  23. 2.09 km WSW of Cobb, California · 14003 days ago · 1 km deep · 74 km away
  24. 2.19 km WSW of Cobb, California · 14003 days ago · 1 km deep · 74 km away
  25. 1.66 km WNW of Cobb, California · 14003 days ago · 0 km deep · 71 km away
  26. 1.77 km WSW of Cobb, California · 14002 days ago · 1 km deep · 75 km away
  27. 1.611 km ESE of Hidden Valley Lake, California · 14001 days ago · 6 km deep · 98 km away
  28. 1.86 km W of Cobb, California · 14001 days ago · 1 km deep · 74 km away
  29. 1.96 km WSW of Willows, California · 14001 days ago · 5 km deep · 88 km away
  30. 2.46 km W of Cobb, California · 14001 days ago · 1 km deep · 72 km away
  31. 1.65 km WSW of Cobb, California · 14001 days ago · 0 km deep · 76 km away
  32. 1.65 km WSW of Cobb, California · 14001 days ago · 0 km deep · 76 km away
  33. 2.14 km WSW of Cobb, California · 14000 days ago · 2 km deep · 76 km away
  34. 1.67 km NE of Willits, California · 14000 days ago · 7 km deep · 11 km away
  35. 1.56 km SSE of Cobb, California · 14000 days ago · 2 km deep · 83 km away
  36. 1.926 km ESE of Ruth, California · 14000 days ago · 22 km deep · 89 km away
  37. 2.12 km WNW of Cobb, California · 14000 days ago · 1 km deep · 74 km away
  38. 2.42 km WNW of Cobb, California · 14000 days ago · 1 km deep · 74 km away
  39. 2.56 km W of Cobb, California · 13998 days ago · 0 km deep · 72 km away
  40. 1.89 km W of Cobb, California · 13997 days ago · 1 km deep · 72 km away
  41. 1.95 km SSW of Cobb, California · 13996 days ago · 2 km deep · 79 km away
  42. 1.77 km W of Cobb, California · 13996 days ago · 1 km deep · 73 km away
  43. 2.514 km NNW of Potter Valley, California · 13996 days ago · -1 km deep · 14 km away
  44. 1.67 km SE of Willits, California · 13996 days ago · 5 km deep · 3 km away
  45. 1.512 km SSW of Laytonville, California · 13995 days ago · 0 km deep · 33 km away
  46. 1.98 km W of Cobb, California · 13994 days ago · 1 km deep · 72 km away
  47. 2.310 km W of Cobb, California · 13994 days ago · 1 km deep · 70 km away
  48. 1.66 km SW of Cobb, California · 13994 days ago · 0 km deep · 78 km away
  49. 2.85 km SE of Comptche, California · 13994 days ago · 5 km deep · 29 km away
  50. 2.98 km W of Cobb, California · 13993 days ago · 0 km deep · 71 km away
  51. 1.822 km NE of Potter Valley, California · 13992 days ago · 8 km deep · 31 km away
  52. 1.89 km W of Cobb, California · 13992 days ago · 1 km deep · 70 km away
  53. 1.85 km WSW of Cobb, California · 13992 days ago · 0 km deep · 76 km away
  54. 1.910 km E of Willits, California · 13991 days ago · 10 km deep · 5 km away
  55. 1.712 km NE of Upper Lake, California · 13991 days ago · 4 km deep · 40 km away
  56. 1.56 km W of Cobb, California · 13991 days ago · 3 km deep · 73 km away
  57. 2.16 km W of Cobb, California · 13991 days ago · 3 km deep · 74 km away
  58. 1.65 km W of Cobb, California · 13991 days ago · 19 km deep · 74 km away
  59. 2.85 km WNW of Cobb, California · 13990 days ago · 1 km deep · 72 km away
  60. 2.612 km N of Brooktrails, California · 13990 days ago · 38 km deep · 23 km away

The first 60 of 167.

Before

  1. 2.05 km W of Cobb, California · 14008 days ago · 1 km deep · 73 km away
  2. 2.34 km WNW of Cobb, California · 14008 days ago · 1 km deep · 72 km away
  3. 1.76 km W of Cobb, California · 14010 days ago · -1 km deep · 73 km away
  4. 1.810 km W of Hopland, California · 14010 days ago · 4 km deep · 44 km away
  5. 1.56 km W of Cobb, California · 14011 days ago · 2 km deep · 72 km away
  6. 2.522 km NE of Potter Valley, California · 14011 days ago · 6 km deep · 31 km away
  7. 2.824 km NE of Potter Valley, California · 14011 days ago · 5 km deep · 33 km away
  8. 1.922 km NE of Potter Valley, California · 14011 days ago · 8 km deep · 31 km away
  9. 1.96 km W of Cobb, California · 14012 days ago · 1 km deep · 73 km away
  10. 1.67 km W of Middletown, California · 14013 days ago · 1 km deep · 84 km away
  11. 2.022 km NE of Potter Valley, California · 14013 days ago · 8 km deep · 31 km away
  12. 1.85 km W of Cobb, California · 14014 days ago · 0 km deep · 73 km away
  13. 2.113 km WSW of Hopland, California · 14014 days ago · 6 km deep · 50 km away
  14. 1.810 km N of Cloverdale, California · 14014 days ago · 4 km deep · 56 km away
  15. 1.622 km NE of Potter Valley, California · 14015 days ago · 8 km deep · 31 km away
  16. 2.721 km NE of Potter Valley, California · 14015 days ago · 8 km deep · 31 km away
  17. 1.822 km NE of Potter Valley, California · 14016 days ago · 8 km deep · 31 km away
  18. 1.925 km NNE of Potter Valley, California · 14016 days ago · 1 km deep · 31 km away
  19. 1.612 km E of Lodoga, California · 14016 days ago · 4 km deep · 79 km away
  20. 1.55 km W of Healdsburg, California · 14017 days ago · 3 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1156924. Read Sun, Oct 4, 2026, 9:20 AM UTC.