California earthquakes

M2.7 earthquake 11 km ENE of Cleone, California

A magnitude 2.7 earthquake struck 11 km ENE of Cleone, California on Mon, Oct 30, 1978, 10:29 AM PST (18:29 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.8 24 km NE of Potter Valley, California. This one was a foreshock.

Cleone 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
2.7 (md), micro
Local time
UTC
1978-10-30 18:29:33 UTC
Depth
11.8 km (7.3 mi), shallow
Epicenter
39.528° N, 123.655° 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 5.3 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.25
Depth from
From location
Station coverage gap
305°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 44 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 2.513 km WNW of Brooktrails, California · 17495 days ago · 12 km deep · 11 km away
  2. 1.73 km SE of Calpella, California · 17492 days ago · 2 km deep · 54 km away
  3. 2.411 km NNW of Potter Valley, California · 17488 days ago · 4 km deep · 46 km away
  4. 2.610 km NNW of Potter Valley, California · 17488 days ago · 3 km deep · 46 km away
  5. 1.89 km E of Willits, California · 17487 days ago · 8 km deep · 38 km away
  6. 1.54 km WSW of Weott, California · 17487 days ago · 25 km deep · 91 km away
  7. 2.326 km NE of Potter Valley, California · 17487 days ago · 14 km deep · 62 km away
  8. 3.824 km NE of Potter Valley, California · 17482 days ago · 18 km deep · 60 km away
  9. 2.119 km NE of Potter Valley, California · 17482 days ago · 4 km deep · 58 km away
  10. 2.024 km NE of Potter Valley, California · 17482 days ago · 11 km deep · 62 km away
  11. 1.827 km NE of Potter Valley, California · 17482 days ago · 15 km deep · 62 km away
  12. 2.425 km NE of Potter Valley, California · 17482 days ago · 13 km deep · 61 km away
  13. 1.725 km NE of Potter Valley, California · 17482 days ago · 13 km deep · 62 km away
  14. 1.813 km NE of Phillipsville, California · 17481 days ago · 25 km deep · 86 km away
  15. 1.76 km SW of Mad River, California · 17476 days ago · 22 km deep · 99 km away
  16. 1.82 km SE of Calpella, California · 17474 days ago · 2 km deep · 54 km away
  17. 1.83 km SE of Calpella, California · 17474 days ago · 3 km deep · 54 km away
  18. 2.03 km SSW of Benbow, California · 17472 days ago · 0 km deep · 58 km away
  19. 2.19 km SE of Willits, California · 17472 days ago · 9 km deep · 38 km away
  20. 3.37 km NNW of Redwood Valley, California · 17472 days ago · 13 km deep · 42 km away
  21. 1.810 km SE of Willits, California · 17468 days ago · 10 km deep · 39 km away
  22. 2.0near the coast of Northern California · 17468 days ago · 4 km deep · 54 km away
  23. 1.83 km N of Redway, California · 17465 days ago · 18 km deep · 71 km away
  24. 2.610 km NNE of Brooktrails, California · 17464 days ago · 8 km deep · 28 km away
  25. 1.84 km ESE of Leggett, California · 17463 days ago · 3 km deep · 35 km away
  26. 1.96 km ESE of Hopland, California · 17463 days ago · 4 km deep · 83 km away
  27. 1.817 km NE of Miranda, California · 17463 days ago · 24 km deep · 90 km away
  28. 1.817 km ENE of Potter Valley, California · 17463 days ago · 5 km deep · 66 km away
  29. 1.74 km WNW of Redwood Valley, California · 17461 days ago · 7 km deep · 44 km away
  30. 2.211 km SSW of Ruth, California · 17460 days ago · 30 km deep · 76 km away
  31. 1.76 km NE of Myers Flat, California · 17458 days ago · 1 km deep · 88 km away
  32. 1.811 km ESE of Willits, California · 17456 days ago · 4 km deep · 40 km away
  33. 2.1near the coast of Northern California · 17454 days ago · 13 km deep · 96 km away
  34. 1.810 km SE of Hopland, California · 17451 days ago · 2 km deep · 87 km away
  35. 1.611 km ESE of Willits, California · 17449 days ago · 4 km deep · 40 km away
  36. 2.33 km SE of Calpella, California · 17446 days ago · 6 km deep · 54 km away
  37. 1.6Northern California · 17444 days ago · 18 km deep · 72 km away
  38. 2.03 km N of Redway, California · 17444 days ago · 17 km deep · 71 km away
  39. 1.99 km ENE of Brooktrails, California · 17442 days ago · 9 km deep · 32 km away
  40. 2.722 km WSW of Weott, California · 17442 days ago · 9 km deep · 88 km away
  41. 2.519 km NNE of Upper Lake, California · 17442 days ago · 7 km deep · 78 km away
  42. 1.917 km SW of Hopland, California · 17441 days ago · 1 km deep · 81 km away
  43. 2.16 km E of Willits, California · 17439 days ago · 1 km deep · 35 km away
  44. 2.010 km SSE of Willits, California · 17435 days ago · 4 km deep · 38 km away

Before

  1. 2.16 km NE of Willits, California · 17496 days ago · 5 km deep · 32 km away
  2. 2.08 km E of Willits, California · 17498 days ago · 10 km deep · 36 km away
  3. 2.512 km N of Brooktrails, California · 17501 days ago · -1 km deep · 25 km away
  4. 1.6Northern California · 17503 days ago · 17 km deep · 98 km away
  5. 2.85 km E of Redcrest, California · 17503 days ago · 21 km deep · 98 km away
  6. 1.734 km NW of Shelter Cove, California · 17504 days ago · 5 km deep · 99 km away
  7. 2.112 km S of Ruth, California · 17504 days ago · 2 km deep · 75 km away
  8. 1.57 km SE of Boonville, California · 17505 days ago · 4 km deep · 69 km away
  9. 2.06 km ENE of Willits, California · 17506 days ago · 11 km deep · 34 km away
  10. 2.09 km ESE of Willits, California · 17507 days ago · 8 km deep · 38 km away
  11. 1.923 km SSW of Scotia, California · 17511 days ago · 2 km deep · 97 km away
  12. 2.29 km ESE of Willits, California · 17513 days ago · 8 km deep · 38 km away
  13. 1.79 km N of Ruth, California · 17513 days ago · 19 km deep · 97 km away
  14. 1.811 km NE of Brooktrails, California · 17517 days ago · 5 km deep · 33 km away
  15. 2.621 km WSW of Weott, California · 17522 days ago · 5 km deep · 89 km away
  16. 1.74 km ESE of Calpella, California · 17523 days ago · 3 km deep · 54 km away
  17. 1.85 km NNE of Myers Flat, California · 17523 days ago · 3 km deep · 88 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1043094. Read Wed, Sep 23, 2026, 2:06 PM UTC.