California earthquakes

M2.7 earthquake 25 km ENE of Hydesville, California

A magnitude 2.7 earthquake struck 25 km ENE of Hydesville, California on Sat, Sep 9, 1978, 12:51 AM PDT (07:51 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.6 18 km SW of Ferndale, California. This one was a foreshock.

Hydesville 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
1978-09-09 07:51:34 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
40.656° N, 123.835° 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 0.6 km horizontally, 0.8 km in depth
Depth from
From location
Station coverage gap
147°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 175 in the 60 days after this one and 96 in the 30 days before it.

After

  1. 3.235 km SW of Ferndale, California · 17552 days ago · 28 km deep · 68 km away
  2. 3.240 km SW of Ferndale, California · 17552 days ago · 36 km deep · 74 km away
  3. 3.049 km W of Indianola, California · 17551 days ago · 23 km deep · 83 km away
  4. 3.231 km SW of Scotia, California · 17551 days ago · 25 km deep · 61 km away
  5. 1.86 km ENE of Garberville, California · 17549 days ago · 18 km deep · 61 km away
  6. 2.654 km WSW of Ferndale, California · 17549 days ago · 71 km deep · 92 km away
  7. 1.67 km ESE of Hydesville, California · 17549 days ago · 19 km deep · 21 km away
  8. 1.840 km WSW of Ferndale, California · 17548 days ago · 4 km deep · 78 km away
  9. 3.136 km SW of Ferndale, California · 17548 days ago · 25 km deep · 69 km away
  10. 1.839 km SW of Ferndale, California · 17547 days ago · 19 km deep · 74 km away
  11. 2.936 km SSW of Ferndale, California · 17547 days ago · 24 km deep · 69 km away
  12. 1.52 km WSW of Loleta, California · 17546 days ago · 17 km deep · 35 km away
  13. 1.913 km S of Ruth, California · 17546 days ago · 22 km deep · 73 km away
  14. 1.543 km SW of Ferndale, California · 17546 days ago · 16 km deep · 79 km away
  15. 1.514 km WSW of Scotia, California · 17545 days ago · 21 km deep · 44 km away
  16. 1.634 km W of Ferndale, California · 17545 days ago · 13 km deep · 71 km away
  17. 1.626 km SW of Ferndale, California · 17544 days ago · 25 km deep · 62 km away
  18. 2.138 km SW of Ferndale, California · 17544 days ago · 22 km deep · 72 km away
  19. 1.616 km SSW of Ferndale, California · 17544 days ago · 20 km deep · 46 km away
  20. 1.618 km SW of Scotia, California · 17544 days ago · 30 km deep · 48 km away
  21. 1.65 km SSW of Alderpoint, California · 17543 days ago · 9 km deep · 61 km away
  22. 2.835 km SW of Ferndale, California · 17543 days ago · 24 km deep · 68 km away
  23. 1.625 km SSW of Ferndale, California · 17543 days ago · 19 km deep · 58 km away
  24. 2.4near the coast of Northern California · 17543 days ago · 19 km deep · 59 km away
  25. 1.527 km WSW of Ferndale, California · 17543 days ago · 18 km deep · 64 km away
  26. 1.541 km SW of Ferndale, California · 17541 days ago · 20 km deep · 75 km away
  27. 2.024 km W of Indianola, California · 17540 days ago · 23 km deep · 58 km away
  28. 3.717 km WSW of Burnt Ranch, California · 17540 days ago · 31 km deep · 18 km away
  29. 2.015 km WSW of Burnt Ranch, California · 17540 days ago · 31 km deep · 19 km away
  30. 1.615 km WSW of Scotia, California · 17540 days ago · 18 km deep · 45 km away
  31. 1.913 km WSW of Burnt Ranch, California · 17539 days ago · 31 km deep · 22 km away
  32. 2.36 km NNE of Myers Flat, California · 17537 days ago · 5 km deep · 38 km away
  33. 2.06 km NNE of Myers Flat, California · 17537 days ago · 3 km deep · 38 km away
  34. 1.66 km NE of Myers Flat, California · 17537 days ago · 1 km deep · 39 km away
  35. 1.65 km NNE of Myers Flat, California · 17537 days ago · 2 km deep · 38 km away
  36. 2.116 km WSW of Scotia, California · 17536 days ago · 19 km deep · 46 km away
  37. 2.231 km SW of Scotia, California · 17535 days ago · 10 km deep · 61 km away
  38. 3.011 km ENE of Weott, California · 17535 days ago · 30 km deep · 31 km away
  39. 2.322 km WSW of Weott, California · 17534 days ago · 7 km deep · 54 km away
  40. 1.822 km NNW of Shelter Cove, California · 17534 days ago · 9 km deep · 56 km away
  41. 1.610 km S of Ferndale, California · 17534 days ago · 18 km deep · 42 km away
  42. 2.510 km S of Ferndale, California · 17534 days ago · 18 km deep · 42 km away
  43. 1.524 km ENE of Hydesville, California · 17534 days ago · 7 km deep · 3 km away
  44. 2.625 km SSW of Ferndale, California · 17534 days ago · 19 km deep · 58 km away
  45. 1.540 km SW of Ferndale, California · 17533 days ago · 20 km deep · 75 km away
  46. 1.617 km SW of Scotia, California · 17532 days ago · 22 km deep · 47 km away
  47. 2.615 km WSW of Ferndale, California · 17530 days ago · 17 km deep · 53 km away
  48. 1.85 km NNE of Myers Flat, California · 17530 days ago · 3 km deep · 38 km away
  49. 2.621 km WSW of Weott, California · 17528 days ago · 5 km deep · 54 km away
  50. 3.025 km SSW of Ferndale, California · 17528 days ago · 20 km deep · 58 km away
  51. 2.832 km SW of Ferndale, California · 17526 days ago · 24 km deep · 67 km away
  52. 2.29 km E of Hydesville, California · 17526 days ago · 21 km deep · 18 km away
  53. 4.618 km SW of Ferndale, California · 17525 days ago · 25 km deep · 55 km away
  54. 2.818 km SSW of Ferndale, California · 17525 days ago · 23 km deep · 52 km away
  55. 1.511 km SW of Ferndale, California · 17525 days ago · 24 km deep · 48 km away
  56. 1.815 km WSW of Ferndale, California · 17525 days ago · 24 km deep · 52 km away
  57. 1.618 km SW of Ferndale, California · 17525 days ago · 21 km deep · 53 km away
  58. 2.318 km WSW of Ferndale, California · 17525 days ago · 25 km deep · 55 km away
  59. 2.119 km SSW of Ferndale, California · 17525 days ago · 23 km deep · 53 km away
  60. 2.017 km WSW of Ferndale, California · 17525 days ago · 24 km deep · 54 km away

The first 60 of 175.

Before

  1. 1.58 km WNW of Rio Dell, California · 17553 days ago · 5 km deep · 34 km away
  2. 2.256 km WNW of Indianola, California · 17553 days ago · 5 km deep · 90 km away
  3. 2.837 km SW of Ferndale, California · 17553 days ago · 17 km deep · 70 km away
  4. 1.717 km SSW of Ferndale, California · 17554 days ago · 28 km deep · 49 km away
  5. 1.59 km S of Ferndale, California · 17554 days ago · 18 km deep · 42 km away
  6. 1.914 km WNW of Fields Landing, California · 17554 days ago · 23 km deep · 47 km away
  7. 1.526 km SSW of Ferndale, California · 17555 days ago · 30 km deep · 59 km away
  8. 1.537 km SSW of Ferndale, California · 17556 days ago · 9 km deep · 69 km away
  9. 3.033 km WSW of Ferndale, California · 17556 days ago · 25 km deep · 71 km away
  10. 2.531 km WSW of Ferndale, California · 17556 days ago · 21 km deep · 69 km away
  11. 3.525 km SSW of Ferndale, California · 17557 days ago · 19 km deep · 57 km away
  12. 1.630 km SW of Ferndale, California · 17557 days ago · 24 km deep · 67 km away
  13. 1.730 km WNW of Ferndale, California · 17557 days ago · 15 km deep · 66 km away
  14. 1.523 km W of Indianola, California · 17557 days ago · 24 km deep · 57 km away
  15. 1.69 km S of Ferndale, California · 17557 days ago · 19 km deep · 39 km away
  16. 2.319 km SW of Ferndale, California · 17558 days ago · 23 km deep · 54 km away
  17. 2.126 km SW of Ferndale, California · 17558 days ago · 18 km deep · 63 km away
  18. 2.525 km SW of Ferndale, California · 17558 days ago · 27 km deep · 61 km away
  19. 1.831 km WSW of Ferndale, California · 17559 days ago · 26 km deep · 68 km away
  20. 1.74 km S of Ferndale, California · 17559 days ago · 25 km deep · 39 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1042226. Read Tue, Sep 29, 2026, 8:47 PM UTC.