California earthquakes

M2.4 earthquake 18 km NE of Upper Lake, California

A magnitude 2.4 earthquake struck 18 km NE of Upper Lake, California on Sun, Feb 5, 1978, 12:03 AM PST (08:03 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.4 11 km ENE of Laytonville, California. This one was a foreshock.

Upper Lake 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
2.4 (md), micro
Local time
UTC
1978-02-05 08:03:01 UTC
Depth
3.3 km (2.0 mi), shallow
Epicenter
39.297° N, 122.778° 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 1.4 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.01
Depth from
From location
Station coverage gap
303°, 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: 200 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.27 km NNE of Hopland, California · 17760 days ago · 1 km deep · 39 km away
  2. 2.27 km NE of Hopland, California · 17760 days ago · 2 km deep · 39 km away
  3. 1.67 km W of Cobb, California · 17760 days ago · 0 km deep · 54 km away
  4. 3.411 km ENE of Laytonville, California · 17759 days ago · -1 km deep · 68 km away
  5. 2.74 km ESE of Willits, California · 17759 days ago · 2 km deep · 47 km away
  6. 2.54 km ESE of Willits, California · 17758 days ago · 2 km deep · 47 km away
  7. 2.012 km ESE of Hidden Valley Lake, California · 17755 days ago · 3 km deep · 67 km away
  8. 1.66 km WSW of Cobb, California · 17754 days ago · 4 km deep · 54 km away
  9. 2.08 km ESE of Talmage, California · 17754 days ago · 8 km deep · 34 km away
  10. 2.37 km NNE of Nice, California · 17754 days ago · 7 km deep · 12 km away
  11. 2.46 km W of Cobb, California · 17754 days ago · 2 km deep · 54 km away
  12. 2.16 km W of Cobb, California · 17754 days ago · -1 km deep · 53 km away
  13. 2.56 km W of Cobb, California · 17752 days ago · 3 km deep · 53 km away
  14. 2.85 km ESE of Santa Rosa, California · 17752 days ago · 9 km deep · 98 km away
  15. 2.55 km ESE of Santa Rosa, California · 17752 days ago · 9 km deep · 98 km away
  16. 1.66 km W of Cobb, California · 17749 days ago · 1 km deep · 54 km away
  17. 1.811 km NE of Healdsburg, California · 17749 days ago · 4 km deep · 69 km away
  18. 1.610 km ESE of Hidden Valley Lake, California · 17748 days ago · 4 km deep · 65 km away
  19. 1.77 km W of Cobb, California · 17748 days ago · 3 km deep · 53 km away
  20. 1.76 km W of Cobb, California · 17746 days ago · -1 km deep · 52 km away
  21. 2.319 km SW of Stonyford, California · 17745 days ago · 9 km deep · 6 km away
  22. 2.48 km NNE of Hopland, California · 17744 days ago · 3 km deep · 38 km away
  23. 1.88 km S of Calistoga, California · 17743 days ago · 6 km deep · 90 km away
  24. 2.416 km NE of Nice, California · 17741 days ago · 7 km deep · 9 km away
  25. 2.46 km ESE of Willits, California · 17741 days ago · 6 km deep · 45 km away
  26. 2.111 km NE of Healdsburg, California · 17740 days ago · 5 km deep · 69 km away
  27. 2.116 km WSW of Durham, California · 17740 days ago · 21 km deep · 76 km away
  28. 1.610 km NE of Healdsburg, California · 17739 days ago · 4 km deep · 70 km away
  29. 2.411 km NNW of Potter Valley, California · 17739 days ago · 1 km deep · 36 km away
  30. 1.820 km WSW of Stonyford, CA · 17739 days ago · -1 km deep · 4 km away
  31. 1.83 km S of Clear Lake Riviera, California · 17738 days ago · 2 km deep · 42 km away
  32. 1.6Northern California · 17737 days ago · 3 km deep · 53 km away
  33. 1.66 km W of Cobb, California · 17737 days ago · 3 km deep · 52 km away
  34. 2.13 km SW of Calpella, California · 17737 days ago · 11 km deep · 40 km away
  35. 2.03 km SW of Calpella, California · 17737 days ago · 8 km deep · 41 km away
  36. 2.19 km NNW of Redwood Valley, California · 17737 days ago · 5 km deep · 42 km away
  37. 1.87 km W of Cobb, California · 17733 days ago · 0 km deep · 54 km away
  38. 1.66 km SSE of Boonville, California · 17733 days ago · 6 km deep · 60 km away
  39. 1.96 km W of Cobb, California · 17732 days ago · 3 km deep · 53 km away
  40. 2.53 km ENE of Willits, California · 17731 days ago · 3 km deep · 48 km away
  41. 1.82 km E of Forestville, California · 17730 days ago · 2 km deep · 92 km away
  42. 1.87 km N of Princeton, California · 17729 days ago · 18 km deep · 69 km away
  43. 2.26 km W of Cobb, California · 17728 days ago · 3 km deep · 54 km away
  44. 2.49 km N of Cloverdale, California · 17728 days ago · 5 km deep · 49 km away
  45. 1.77 km W of Cobb, California · 17728 days ago · 1 km deep · 53 km away
  46. 1.77 km WSW of Cobb, California · 17727 days ago · 2 km deep · 55 km away
  47. 2.07 km WSW of Cobb, California · 17725 days ago · -1 km deep · 55 km away
  48. 2.57 km W of Cobb, California · 17724 days ago · 3 km deep · 53 km away
  49. 1.64 km WSW of Cobb, California · 17723 days ago · -1 km deep · 55 km away
  50. 1.719 km NE of Sea Ranch, California · 17722 days ago · 1 km deep · 69 km away
  51. 1.716 km N of Cazadero, California · 17722 days ago · 0 km deep · 75 km away
  52. 1.67 km W of Cobb, California · 17719 days ago · 3 km deep · 54 km away
  53. 3.538 km NW of Paskenta, California · 17716 days ago · 5 km deep · 90 km away
  54. 3.238 km ESE of Ruth, California · 17716 days ago · 23 km deep · 88 km away
  55. 1.75 km N of Healdsburg, California · 17716 days ago · 5 km deep · 72 km away
  56. 1.77 km WSW of Middletown, California · 17713 days ago · 2 km deep · 62 km away
  57. 2.47 km WSW of Middletown, California · 17713 days ago · 2 km deep · 62 km away
  58. 2.44 km NNE of Talmage, California · 17713 days ago · 8 km deep · 35 km away
  59. 4.54 km SE of Calpella, California · 17712 days ago · 12 km deep · 34 km away
  60. 2.55 km SSE of Calpella, California · 17712 days ago · 1 km deep · 36 km away

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1038847. Read Tue, Sep 22, 2026, 11:19 AM UTC.