California earthquakes

M3.3 earthquake 4 km WNW of Ukiah, California

A magnitude 3.3 earthquake struck 4 km WNW of Ukiah, California on Tue, Jan 17, 1978, 12:59 PM PST (20:59 UTC), 11 km (7 mi) below the surface.

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

Ukiah forecastMore in California

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
3.3 (md), minor
Local time
UTC
1978-01-17 20:59:12 UTC
Depth
10.8 km (6.7 mi), shallow
Epicenter
39.168° N, 123.250° 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, 1.3 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
236°, poorly surrounded by stations
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 75 in the 60 days after this one and 50 in the 30 days before it.

After

  1. 2.06 km W of Cobb, California · 17780 days ago · 3 km deep · 55 km away
  2. 1.99 km E of Hidden Valley Lake, California · 17779 days ago · 8 km deep · 81 km away
  3. 2.16 km W of Cobb, California · 17778 days ago · 1 km deep · 56 km away
  4. 2.58 km W of Cobb, California · 17777 days ago · 1 km deep · 54 km away
  5. 3.010 km ESE of Willits, California · 17776 days ago · 5 km deep · 24 km away
  6. 1.710 km NW of Cobb, California · 17776 days ago · 1 km deep · 49 km away
  7. 1.65 km W of Cobb, California · 17776 days ago · 3 km deep · 57 km away
  8. 1.68 km WSW of Cobb, California · 17774 days ago · 1 km deep · 55 km away
  9. 2.46 km ESE of Willits, California · 17772 days ago · -1 km deep · 24 km away
  10. 1.511 km WNW of Cobb, California · 17772 days ago · 15 km deep · 49 km away
  11. 1.68 km W of Cobb, California · 17771 days ago · 0 km deep · 55 km away
  12. 2.07 km W of Cobb, California · 17771 days ago · 0 km deep · 55 km away
  13. 1.611 km ENE of Healdsburg, California · 17771 days ago · 5 km deep · 71 km away
  14. 2.95 km ENE of Willits, California · 17769 days ago · 0 km deep · 30 km away
  15. 1.97 km SW of Calistoga, California · 17768 days ago · 5 km deep · 89 km away
  16. 1.56 km WSW of Cobb, California · 17768 days ago · 0 km deep · 56 km away
  17. 3.017 km NE of Lucerne, California · 17767 days ago · 6 km deep · 51 km away
  18. 1.96 km W of Cobb, California · 17766 days ago · 4 km deep · 54 km away
  19. 3.15 km ESE of Willits, California · 17766 days ago · 2 km deep · 26 km away
  20. 2.08 km S of Calistoga, California · 17765 days ago · 7 km deep · 94 km away
  21. 1.86 km W of Cobb, California · 17763 days ago · 0 km deep · 55 km away
  22. 2.29 km NNW of Redwood Valley, California · 17762 days ago · 7 km deep · 20 km away
  23. 2.31 km W of Angwin, California · 17762 days ago · 8 km deep · 95 km away
  24. 2.89 km NNE of Brooktrails, California · 17762 days ago · 4 km deep · 39 km away
  25. 2.418 km NE of Upper Lake, California · 17761 days ago · 3 km deep · 43 km away
  26. 1.84 km WSW of Cobb, California · 17760 days ago · 1 km deep · 58 km away
  27. 2.27 km NNE of Hopland, California · 17760 days ago · 1 km deep · 21 km away
  28. 2.27 km NE of Hopland, California · 17760 days ago · 2 km deep · 22 km away
  29. 1.67 km W of Cobb, California · 17760 days ago · 0 km deep · 55 km away
  30. 3.411 km ENE of Laytonville, California · 17759 days ago · -1 km deep · 62 km away
  31. 2.74 km ESE of Willits, California · 17759 days ago · 2 km deep · 26 km away
  32. 2.54 km ESE of Willits, California · 17758 days ago · 2 km deep · 25 km away
  33. 2.012 km ESE of Hidden Valley Lake, California · 17755 days ago · 3 km deep · 84 km away
  34. 1.66 km WSW of Cobb, California · 17754 days ago · 4 km deep · 56 km away
  35. 2.08 km ESE of Talmage, California · 17754 days ago · 8 km deep · 17 km away
  36. 2.37 km NNE of Nice, California · 17754 days ago · 7 km deep · 37 km away
  37. 2.46 km W of Cobb, California · 17754 days ago · 2 km deep · 56 km away
  38. 2.16 km W of Cobb, California · 17754 days ago · -1 km deep · 56 km away
  39. 2.56 km W of Cobb, California · 17752 days ago · 3 km deep · 55 km away
  40. 2.85 km ESE of Santa Rosa, California · 17752 days ago · 9 km deep · 98 km away
  41. 2.55 km ESE of Santa Rosa, California · 17752 days ago · 9 km deep · 98 km away
  42. 1.66 km W of Cobb, California · 17749 days ago · 1 km deep · 56 km away
  43. 1.811 km NE of Healdsburg, California · 17749 days ago · 4 km deep · 69 km away
  44. 1.610 km ESE of Hidden Valley Lake, California · 17748 days ago · 4 km deep · 82 km away
  45. 1.77 km W of Cobb, California · 17747 days ago · 3 km deep · 55 km away
  46. 1.76 km W of Cobb, California · 17746 days ago · -1 km deep · 54 km away
  47. 2.319 km SW of Stonyford, California · 17745 days ago · 9 km deep · 47 km away
  48. 2.48 km NNE of Hopland, California · 17744 days ago · 3 km deep · 20 km away
  49. 1.88 km S of Calistoga, California · 17743 days ago · 6 km deep · 94 km away
  50. 2.416 km NE of Nice, California · 17741 days ago · 7 km deep · 47 km away
  51. 2.46 km ESE of Willits, California · 17740 days ago · 6 km deep · 25 km away
  52. 2.111 km NE of Healdsburg, California · 17740 days ago · 5 km deep · 69 km away
  53. 1.610 km NE of Healdsburg, California · 17739 days ago · 4 km deep · 69 km away
  54. 2.411 km NNW of Potter Valley, California · 17739 days ago · 1 km deep · 28 km away
  55. 1.820 km WSW of Stonyford, CA · 17738 days ago · -1 km deep · 45 km away
  56. 1.83 km S of Clear Lake Riviera, California · 17738 days ago · 2 km deep · 53 km away
  57. 1.6Northern California · 17737 days ago · 3 km deep · 54 km away
  58. 1.66 km W of Cobb, California · 17737 days ago · 3 km deep · 54 km away
  59. 2.13 km SW of Calpella, California · 17737 days ago · 11 km deep · 5 km away
  60. 2.03 km SW of Calpella, California · 17737 days ago · 8 km deep · 5 km away

The first 60 of 75.

Before

  1. 3.44 km NW of Ukiah, California · 17782 days ago · 7 km deep · 1 km away
  2. 2.23 km WNW of Ukiah, California · 17782 days ago · 9 km deep · 1 km away
  3. 2.54 km WNW of Ukiah, California · 17782 days ago · 10 km deep · 0 km away
  4. 1.66 km WSW of Cobb, California · 17783 days ago · -1 km deep · 56 km away
  5. 3.16 km WSW of Cobb, California · 17783 days ago · 0 km deep · 56 km away
  6. 1.97 km WSW of Cobb, California · 17783 days ago · 0 km deep · 56 km away
  7. 2.47 km W of Cobb, California · 17783 days ago · 3 km deep · 55 km away
  8. 1.58 km W of Cobb, California · 17783 days ago · 1 km deep · 55 km away
  9. 3.08 km WSW of Cobb, California · 17783 days ago · 0 km deep · 55 km away
  10. 2.36 km W of Cobb, California · 17784 days ago · 3 km deep · 55 km away
  11. 2.28 km W of Cobb, California · 17784 days ago · 0 km deep · 55 km away
  12. 2.78 km W of Cobb, California · 17784 days ago · 0 km deep · 55 km away
  13. 1.76 km WSW of Cobb, California · 17784 days ago · 1 km deep · 56 km away
  14. 1.96 km S of Clear Lake Riviera, California · 17784 days ago · 1 km deep · 55 km away
  15. 1.66 km NNW of Cobb, California · 17784 days ago · 3 km deep · 54 km away
  16. 1.93 km NE of Santa Rosa, California · 17784 days ago · 8 km deep · 92 km away
  17. 2.56 km W of Cobb, California · 17786 days ago · 3 km deep · 56 km away
  18. 2.110 km NE of Healdsburg, California · 17786 days ago · 3 km deep · 70 km away
  19. 1.57 km W of Cobb, California · 17787 days ago · 1 km deep · 55 km away
  20. 2.410 km NE of Healdsburg, California · 17788 days ago · 5 km deep · 70 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1038628 (also filed as usp0000sk4). Read Tue, Sep 22, 2026, 10:28 AM UTC.