California earthquakes

M1.9 earthquake 87 km WNW of Samoa, California

A magnitude 1.9 earthquake struck 87 km WNW of Samoa, California on Thu, Jul 7, 1977, 12:02 PM PDT (19:02 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.7 73 km W of Ferndale, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1977-07-07 19:02:59 UTC
Depth
4.7 km (2.9 mi), shallow
Epicenter
41.031° N, 125.191° 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 7.3 km horizontally, 10.1 km in depth
Depth from
From location
Station coverage gap
314°, poorly surrounded by stations
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 55 in the 60 days after this one and 35 in the 30 days before it.

After

  1. 2.064 km W of Indianola, California · 17985 days ago · 4 km deep · 33 km away
  2. 2.839 km SW of Ferndale, California · 17985 days ago · 23 km deep · 95 km away
  3. 1.511 km WSW of Indianola, California · 17984 days ago · 8 km deep · 81 km away
  4. 2.919 km W of Samoa, California · 17980 days ago · 24 km deep · 69 km away
  5. 3.039 km WSW of Ferndale, California · 17978 days ago · 26 km deep · 85 km away
  6. 4.773 km W of Ferndale, California · 17975 days ago · 9 km deep · 64 km away
  7. 3.871 km W of Ferndale, California · 17975 days ago · 2 km deep · 64 km away
  8. 2.167 km W of Ferndale, California · 17975 days ago · 10 km deep · 62 km away
  9. 1.63 km WNW of Ferndale, California · 17975 days ago · 21 km deep · 89 km away
  10. 2.634 km SW of Ferndale, California · 17972 days ago · 29 km deep · 97 km away
  11. 2.328 km WSW of Ferndale, California · 17972 days ago · 24 km deep · 78 km away
  12. 3.738 km W of Big Lagoon, California · 17970 days ago · 12 km deep · 52 km away
  13. 1.952 km W of Ferndale, California · 17970 days ago · 7 km deep · 50 km away
  14. 2.141 km SW of Ferndale, California · 17968 days ago · 13 km deep · 92 km away
  15. 1.725 km WNW of Samoa, California · 17968 days ago · 20 km deep · 62 km away
  16. 2.631 km WSW of Ferndale, California · 17967 days ago · 21 km deep · 75 km away
  17. 2.930 km WNW of Samoa, California · 17967 days ago · 23 km deep · 57 km away
  18. 3.050 km SW of Ferndale, California · 17965 days ago · 9 km deep · 92 km away
  19. 2.51 km NW of Humboldt Hill, California · 17965 days ago · 10 km deep · 90 km away
  20. 1.725 km SW of Ferndale, California · 17964 days ago · 22 km deep · 95 km away
  21. 3.949 km WSW of Ferndale, California · 17961 days ago · 24 km deep · 68 km away
  22. 2.792 km W of Big Lagoon, California · 17958 days ago · 5 km deep · 21 km away
  23. 1.633 km SSW of Ferndale, California · 17958 days ago · 14 km deep · 100 km away
  24. 1.843 km SW of Ferndale, California · 17956 days ago · 11 km deep · 96 km away
  25. 1.828 km SW of Ferndale, California · 17956 days ago · 27 km deep · 93 km away
  26. 3.532 km W of Ferndale, California · 17953 days ago · 22 km deep · 73 km away
  27. 2.380 km W of Trinidad, California · 17951 days ago · 6 km deep · 10 km away
  28. 1.67 km W of Samoa, California · 17950 days ago · 23 km deep · 81 km away
  29. 2.9near the coast of Northern California · 17949 days ago · 24 km deep · 99 km away
  30. 1.75 km SSE of Indianola, California · 17949 days ago · 24 km deep · 99 km away
  31. 1.520 km SW of Ferndale, California · 17948 days ago · 26 km deep · 91 km away
  32. 2.821 km SW of Ferndale, California · 17947 days ago · 23 km deep · 91 km away
  33. 2.227 km SSW of Ferndale, California · 17944 days ago · 22 km deep · 99 km away
  34. 1.824 km SW of Ferndale, California · 17944 days ago · 23 km deep · 96 km away
  35. 1.963 km W of Ferndale, California · 17944 days ago · 11 km deep · 56 km away
  36. 3.474 km W of Ferndale, California · 17943 days ago · 10 km deep · 65 km away
  37. 1.831 km W of Ferndale, California · 17943 days ago · 27 km deep · 71 km away
  38. 1.529 km WSW of Ferndale, CA · 17942 days ago · 21 km deep · 76 km away
  39. 1.928 km WSW of Ferndale, California · 17942 days ago · 16 km deep · 76 km away
  40. 1.725 km SW of Ferndale, California · 17942 days ago · 18 km deep · 95 km away
  41. 1.531 km WSW of Ferndale, California · 17942 days ago · 15 km deep · 74 km away
  42. 3.167 km W of Ferndale, California · 17940 days ago · 2 km deep · 44 km away
  43. 2.01 km SW of Indianola, California · 17937 days ago · 9 km deep · 89 km away
  44. 1.9near the coast of Northern California · 17937 days ago · 8 km deep · 89 km away
  45. 1.91 km WSW of Indianola, California · 17937 days ago · 8 km deep · 88 km away
  46. 1.51 km WSW of Indianola, California · 17936 days ago · 9 km deep · 88 km away
  47. 2.414 km WNW of Ferndale, California · 17935 days ago · 21 km deep · 79 km away
  48. 1.835 km W of Ferndale, California · 17934 days ago · 10 km deep · 68 km away
  49. 1.824 km SW of Ferndale, California · 17934 days ago · 21 km deep · 90 km away
  50. 2.51 km NNW of Bayside, California · 17934 days ago · 25 km deep · 96 km away
  51. 2.920 km W of Indianola, California · 17933 days ago · 23 km deep · 70 km away
  52. 2.119 km WNW of Indianola, California · 17933 days ago · 24 km deep · 70 km away
  53. 1.636 km WSW of Ferndale, California · 17930 days ago · 23 km deep · 74 km away
  54. 2.932 km SW of Ferndale, California · 17928 days ago · 17 km deep · 91 km away
  55. 1.966 km W of Ferndale, California · 17928 days ago · 4 km deep · 51 km away

Before

  1. 3.987 km W of Ferndale, California · 17988 days ago · 7 km deep · 41 km away
  2. 4.292 km W of Ferndale, California · 17988 days ago · 5 km deep · 44 km away
  3. 2.386 km W of Trinidad, California · 17990 days ago · 5 km deep · 9 km away
  4. 2.038 km SW of Ferndale, California · 17992 days ago · 23 km deep · 96 km away
  5. 2.5112 km W of Ferndale, California · 17993 days ago · 4 km deep · 60 km away
  6. 2.423 km SSW of Ferndale, California · 17996 days ago · 29 km deep · 99 km away
  7. 2.868 km W of Ferndale, California · 17998 days ago · 7 km deep · 62 km away
  8. 1.613 km NW of Ferndale, California · 17999 days ago · 8 km deep · 80 km away
  9. 3.233 km WSW of Ferndale, California · 18001 days ago · 26 km deep · 81 km away
  10. 3.732 km WSW of Ferndale, California · 18002 days ago · 25 km deep · 80 km away
  11. 1.726 km WSW of Ferndale, California · 18002 days ago · 23 km deep · 82 km away
  12. 2.611 km WSW of Indianola, California · 18004 days ago · 9 km deep · 81 km away
  13. 1.611 km WSW of Indianola, California · 18004 days ago · 8 km deep · 81 km away
  14. 2.211 km WSW of Indianola, California · 18004 days ago · 9 km deep · 81 km away
  15. 2.511 km WSW of Indianola, California · 18004 days ago · 8 km deep · 81 km away
  16. 2.211 km WSW of Indianola, California · 18004 days ago · 9 km deep · 81 km away
  17. 2.611 km WSW of Indianola, California · 18004 days ago · 8 km deep · 81 km away
  18. 2.311 km WSW of Indianola, California · 18004 days ago · 8 km deep · 81 km away
  19. 2.211 km WSW of Indianola, California · 18004 days ago · 8 km deep · 81 km away
  20. 2.611 km WSW of Indianola, California · 18004 days ago · 8 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1035724. Read Mon, Oct 5, 2026, 2:37 AM UTC.