California earthquakes

M1.8 earthquake 6 km NE of Willits, California

A magnitude 1.8 earthquake struck 6 km NE of Willits, California on Sat, Aug 19, 1978, 2:21 PM PDT (21:21 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M1.9 19 km S of Ruth, California. This one was a foreshock.

Willits 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
1.8 (md), micro
Local time
UTC
1978-08-19 21:21:56 UTC
Depth
4.1 km (2.6 mi), shallow
Epicenter
39.446° N, 123.300° 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 6.0 km horizontally, 5.7 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
265°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 66 in the 60 days after this one and 29 in the 30 days before it.

After

  1. 1.58 km W of Cobb, California · 17565 days ago · 0 km deep · 82 km away
  2. 1.59 km W of Cobb, California · 17564 days ago · 0 km deep · 80 km away
  3. 1.717 km SE of Alderpoint, California · 17564 days ago · -1 km deep · 71 km away
  4. 1.510 km W of Cobb, California · 17563 days ago · 0 km deep · 80 km away
  5. 1.919 km S of Ruth, California · 17562 days ago · 3 km deep · 73 km away
  6. 1.87 km W of Cobb, California · 17562 days ago · 3 km deep · 82 km away
  7. 1.94 km NE of Redway, California · 17562 days ago · 5 km deep · 88 km away
  8. 1.53 km ENE of Calpella, California · 17561 days ago · 5 km deep · 25 km away
  9. 2.37 km WSW of Cobb, California · 17561 days ago · 1 km deep · 83 km away
  10. 1.98 km WSW of Cobb, California · 17561 days ago · 3 km deep · 84 km away
  11. 1.94 km S of Phillipsville, California · 17560 days ago · 4 km deep · 90 km away
  12. 2.08 km ENE of Benbow, California · 17560 days ago · 14 km deep · 78 km away
  13. 2.21 km SSW of Garberville, California · 17559 days ago · 11 km deep · 83 km away
  14. 2.00 km NNE of Garberville, California · 17558 days ago · 9 km deep · 84 km away
  15. 1.88 km E of Hopland, California · 17555 days ago · 6 km deep · 57 km away
  16. 2.07 km W of Cobb, California · 17555 days ago · 3 km deep · 82 km away
  17. 2.27 km W of Cobb, California · 17555 days ago · 3 km deep · 82 km away
  18. 1.98 km E of Willits, California · 17553 days ago · 4 km deep · 6 km away
  19. 1.79 km ESE of Willits, California · 17553 days ago · 4 km deep · 9 km away
  20. 2.19 km ESE of Willits, California · 17553 days ago · 4 km deep · 9 km away
  21. 2.69 km ESE of Willits, California · 17553 days ago · 2 km deep · 10 km away
  22. 1.99 km ESE of Willits, California · 17553 days ago · 4 km deep · 9 km away
  23. 2.39 km ESE of Willits, California · 17552 days ago · 3 km deep · 9 km away
  24. 1.69 km ESE of Willits, California · 17551 days ago · 4 km deep · 9 km away
  25. 2.77 km W of Cobb, California · 17551 days ago · 3 km deep · 82 km away
  26. 2.66 km E of Willits, California · 17549 days ago · 14 km deep · 5 km away
  27. 2.57 km ESE of Willits, California · 17549 days ago · 5 km deep · 7 km away
  28. 2.86 km ESE of Willits, California · 17548 days ago · 10 km deep · 6 km away
  29. 2.37 km WSW of Cobb, California · 17547 days ago · -1 km deep · 83 km away
  30. 2.320 km NE of Potter Valley, California · 17546 days ago · 6 km deep · 31 km away
  31. 2.519 km NE of Potter Valley, California · 17546 days ago · 5 km deep · 30 km away
  32. 1.77 km W of Cobb, California · 17546 days ago · 2 km deep · 81 km away
  33. 2.910 km WSW of Hopland, California · 17544 days ago · 4 km deep · 55 km away
  34. 2.56 km SSW of Clear Lake Riviera, California · 17543 days ago · 3 km deep · 78 km away
  35. 2.22 km ESE of Calpella, California · 17542 days ago · 6 km deep · 27 km away
  36. 1.86 km ENE of Garberville, California · 17542 days ago · 18 km deep · 82 km away
  37. 2.710 km W of Hopland, California · 17542 days ago · 4 km deep · 55 km away
  38. 2.17 km W of Cobb, California · 17542 days ago · 1 km deep · 81 km away
  39. 2.14 km SSE of Cloverdale, California · 17540 days ago · 3 km deep · 79 km away
  40. 1.913 km S of Ruth, California · 17539 days ago · 22 km deep · 78 km away
  41. 1.95 km ENE of Willits, California · 17539 days ago · 6 km deep · 3 km away
  42. 2.08 km E of Sea Ranch, California · 17538 days ago · 21 km deep · 81 km away
  43. 1.65 km SSW of Alderpoint, California · 17537 days ago · 9 km deep · 81 km away
  44. 2.06 km N of Hopland, California · 17535 days ago · 5 km deep · 49 km away
  45. 1.53 km NE of Hopland, California · 17534 days ago · 4 km deep · 53 km away
  46. 2.77 km W of Cobb, California · 17534 days ago · 4 km deep · 82 km away
  47. 1.78 km W of Cobb, California · 17530 days ago · 1 km deep · 81 km away
  48. 2.116 km ENE of Lower Lake, California · 17530 days ago · 3 km deep · 92 km away
  49. 1.811 km NNW of Redwood Valley, California · 17528 days ago · 6 km deep · 11 km away
  50. 1.710 km WNW of Potter Valley, California · 17528 days ago · 4 km deep · 11 km away
  51. 1.811 km WNW of Potter Valley, California · 17528 days ago · 4 km deep · 11 km away
  52. 1.67 km E of Willits, California · 17525 days ago · 5 km deep · 6 km away
  53. 1.98 km W of Cobb, California · 17525 days ago · 1 km deep · 82 km away
  54. 2.48 km WSW of Cobb, California · 17524 days ago · 0 km deep · 83 km away
  55. 1.74 km ESE of Calpella, California · 17523 days ago · 3 km deep · 27 km away
  56. 2.14 km WSW of Cobb, California · 17519 days ago · 1 km deep · 85 km away
  57. 2.210 km NW of Cobb, California · 17518 days ago · 3 km deep · 76 km away
  58. 2.68 km W of Cobb, California · 17517 days ago · 1 km deep · 81 km away
  59. 1.811 km NE of Brooktrails, California · 17516 days ago · 5 km deep · 7 km away
  60. 2.32 km SE of Clear Lake Riviera, California · 17515 days ago · 1 km deep · 76 km away

The first 60 of 66.

Before

  1. 1.86 km NE of Willits, California · 17566 days ago · 4 km deep · 1 km away
  2. 2.06 km NE of Willits, California · 17566 days ago · 4 km deep · 0 km away
  3. 1.88 km W of Cobb, California · 17568 days ago · 0 km deep · 81 km away
  4. 1.68 km W of Cobb, California · 17568 days ago · 1 km deep · 81 km away
  5. 2.0Northern California · 17568 days ago · 0 km deep · 98 km away
  6. 2.59 km NNW of Redwood Valley, California · 17569 days ago · 2 km deep · 13 km away
  7. 2.17 km W of Cobb, California · 17570 days ago · 4 km deep · 82 km away
  8. 1.62 km E of Garberville, California · 17570 days ago · 28 km deep · 83 km away
  9. 2.08 km W of Lakeport, California · 17570 days ago · 4 km deep · 51 km away
  10. 1.75 km WNW of Cobb, California · 17572 days ago · 3 km deep · 81 km away
  11. 2.113 km SSE of Mad River, California · 17572 days ago · -1 km deep · 99 km away
  12. 1.52 km ESE of Clear Lake Riviera, California · 17573 days ago · 1 km deep · 76 km away
  13. 1.82 km ESE of Clear Lake Riviera, California · 17573 days ago · 1 km deep · 76 km away
  14. 2.612 km SSE of Laytonville, California · 17574 days ago · -1 km deep · 20 km away
  15. 1.710 km ENE of Clearlake Oaks, California · 17582 days ago · -1 km deep · 77 km away
  16. 2.26 km W of Cobb, California · 17583 days ago · 3 km deep · 82 km away
  17. 2.229 km WNW of Cleone, California · 17584 days ago · 4 km deep · 70 km away
  18. 1.77 km WSW of Cobb, California · 17585 days ago · 2 km deep · 84 km away
  19. 1.911 km SE of Boonville, California · 17586 days ago · 4 km deep · 58 km away
  20. 2.99 km S of Benbow, California · 17587 days ago · -1 km deep · 74 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1041763. Read Wed, Sep 23, 2026, 12:58 AM UTC.