California earthquakes

M1.7 earthquake 4 km W of Glen Ellen, California

A magnitude 1.7 earthquake struck 4 km W of Glen Ellen, California on Fri, Nov 6, 1987, 12:09 AM PST (08:09 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.6 11 km SW of Byron, California. This one was a foreshock.

Glen Ellen 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), micro
Local time
UTC
1987-11-06 08:09:33 UTC
Depth
1.9 km (1.2 mi), shallow
Epicenter
38.358° N, 122.576° 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 0.9 km horizontally, 10.2 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
174°
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: 167 in the 60 days after this one and 107 in the 30 days before it.

After

  1. 2.06 km W of Cobb, California · 14207 days ago · 2 km deep · 55 km away
  2. 1.86 km SSW of Cobb, California · 14207 days ago · 0 km deep · 49 km away
  3. 1.711 km WSW of Middletown, California · 14207 days ago · 9 km deep · 42 km away
  4. 1.84 km NW of Cobb, California · 14207 days ago · -1 km deep · 56 km away
  5. 1.66 km WNW of Cobb, California · 14207 days ago · 0 km deep · 58 km away
  6. 1.63 km ENE of Redwood Shores, California · 14206 days ago · 5 km deep · 96 km away
  7. 3.06 km W of Cobb, California · 14206 days ago · 0 km deep · 55 km away
  8. 2.06 km W of Cobb, California · 14206 days ago · 2 km deep · 56 km away
  9. 2.26 km W of Cobb, California · 14206 days ago · 1 km deep · 55 km away
  10. 3.25 km W of Cobb, California · 14206 days ago · 0 km deep · 55 km away
  11. 1.77 km WSW of Cobb, California · 14206 days ago · 13 km deep · 51 km away
  12. 2.06 km W of Cobb, California · 14206 days ago · 1 km deep · 55 km away
  13. 1.74 km W of Calistoga, California · 14205 days ago · 3 km deep · 24 km away
  14. 1.56 km WSW of Cobb, California · 14204 days ago · 1 km deep · 52 km away
  15. 1.56 km WSW of Cobb, California · 14204 days ago · 0 km deep · 53 km away
  16. 1.73 km SSW of Alameda, California · 14203 days ago · 5 km deep · 74 km away
  17. 1.611 km ESE of Hidden Valley Lake, California · 14203 days ago · 5 km deep · 47 km away
  18. 2.17 km W of Cobb, California · 14203 days ago · 3 km deep · 55 km away
  19. 2.06 km W of Cobb, California · 14201 days ago · 1 km deep · 56 km away
  20. 3.05 km W of Cobb, California · 14201 days ago · 2 km deep · 55 km away
  21. 1.9Northern California · 14201 days ago · 0 km deep · 56 km away
  22. 1.92 km SW of Mountain View, California · 14201 days ago · 0 km deep · 56 km away
  23. 1.59 km SSW of Cobb, California · 14201 days ago · 8 km deep · 45 km away
  24. 1.812 km SE of Middletown, California · 14200 days ago · 6 km deep · 36 km away
  25. 1.512 km NNW of Angwin, California · 14200 days ago · 5 km deep · 36 km away
  26. 3.16 km WSW of Cobb, California · 14200 days ago · 3 km deep · 53 km away
  27. 1.76 km W of Cobb, California · 14200 days ago · 3 km deep · 55 km away
  28. 1.66 km W of Cobb, California · 14200 days ago · 2 km deep · 54 km away
  29. 2.09 km W of Cobb, California · 14197 days ago · 1 km deep · 55 km away
  30. 1.93 km SW of Cobb, California · 14197 days ago · 1 km deep · 51 km away
  31. 2.914 km N of Pittsburg, California · 14196 days ago · 17 km deep · 66 km away
  32. 1.62 km SSE of Fulton, California · 14196 days ago · 8 km deep · 21 km away
  33. 2.27 km WSW of Cobb, California · 14196 days ago · 1 km deep · 53 km away
  34. 1.85 km SSW of Cobb, California · 14193 days ago · -1 km deep · 49 km away
  35. 1.97 km W of Cobb, California · 14193 days ago · 3 km deep · 54 km away
  36. 1.97 km W of Cobb, California · 14193 days ago · 3 km deep · 54 km away
  37. 2.58 km W of Cobb, California · 14193 days ago · 1 km deep · 56 km away
  38. 1.89 km W of Cobb, California · 14193 days ago · 1 km deep · 56 km away
  39. 1.87 km W of Cobb, California · 14193 days ago · 1 km deep · 56 km away
  40. 1.66 km W of Cobb, California · 14192 days ago · 3 km deep · 55 km away
  41. 2.98 km W of Cobb, California · 14192 days ago · 1 km deep · 56 km away
  42. 2.78 km W of Cobb, California · 14192 days ago · 1 km deep · 56 km away
  43. 1.99 km W of Cobb, California · 14192 days ago · 0 km deep · 55 km away
  44. 1.94 km WSW of Cobb, California · 14191 days ago · 1 km deep · 53 km away
  45. 2.25 km NW of Montalvin, California · 14191 days ago · 5 km deep · 41 km away
  46. 2.54 km WSW of Cobb, California · 14191 days ago · 1 km deep · 52 km away
  47. 2.28 km W of Cobb, California · 14191 days ago · 1 km deep · 56 km away
  48. 2.07 km W of Cobb, California · 14191 days ago · 3 km deep · 55 km away
  49. 1.82 km ENE of San Leandro, California · 14191 days ago · 4 km deep · 80 km away
  50. 2.07 km NW of Broadmoor, California · 14190 days ago · 12 km deep · 69 km away
  51. 1.67 km WSW of Cobb, California · 14190 days ago · 4 km deep · 53 km away
  52. 2.48 km ENE of Hidden Valley Lake, California · 14190 days ago · 10 km deep · 54 km away
  53. 1.75 km SW of Cobb, California · 14189 days ago · -1 km deep · 50 km away
  54. 1.6Northern California · 14189 days ago · 0 km deep · 50 km away
  55. 1.55 km SW of Cobb, California · 14189 days ago · -1 km deep · 50 km away
  56. 2.06 km W of Cobb, California · 14189 days ago · 3 km deep · 55 km away
  57. 1.6Northern California · 14189 days ago · 1 km deep · 56 km away
  58. 1.95 km WNW of Cobb, California · 14189 days ago · 2 km deep · 56 km away
  59. 2.110 km SW of Cloverdale, California · 14189 days ago · 5 km deep · 63 km away
  60. 1.74 km W of Cobb, California · 14189 days ago · 0 km deep · 54 km away

The first 60 of 167.

Before

  1. 1.94 km WSW of Cobb, California · 14208 days ago · 2 km deep · 53 km away
  2. 1.63 km W of Cobb, California · 14208 days ago · 0 km deep · 54 km away
  3. 1.74 km WSW of Cobb, California · 14208 days ago · 0 km deep · 52 km away
  4. 1.65 km WNW of Cobb, California · 14208 days ago · 1 km deep · 56 km away
  5. 1.87 km WSW of Cobb, California · 14208 days ago · 1 km deep · 53 km away
  6. 1.67 km W of Cobb, California · 14209 days ago · 3 km deep · 55 km away
  7. 1.7Northern California · 14210 days ago · 0 km deep · 54 km away
  8. 2.26 km W of Cobb, California · 14210 days ago · 3 km deep · 54 km away
  9. 1.69 km W of Cobb, California · 14210 days ago · 2 km deep · 55 km away
  10. 2.0Northern California · 14210 days ago · 5 km deep · 82 km away
  11. 1.76 km SW of Cobb, California · 14211 days ago · 0 km deep · 50 km away
  12. 1.56 km SW of Cobb, California · 14211 days ago · -1 km deep · 50 km away
  13. 3.05 km SW of Cobb, California · 14211 days ago · 0 km deep · 51 km away
  14. 1.85 km SW of Cobb, California · 14211 days ago · -1 km deep · 51 km away
  15. 3.25 km SW of Cobb, California · 14211 days ago · 0 km deep · 51 km away
  16. 1.66 km SW of Cobb, California · 14212 days ago · -1 km deep · 50 km away
  17. 1.66 km SW of Cobb, California · 14212 days ago · -1 km deep · 50 km away
  18. 1.86 km W of Pleasant Hill, California · 14213 days ago · 14 km deep · 60 km away
  19. 2.06 km W of Cobb, California · 14213 days ago · -1 km deep · 56 km away
  20. 3.17 km WNW of Cobb, California · 14213 days ago · -1 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1153621. Read Tue, Sep 29, 2026, 11:23 PM UTC.