California earthquakes

M1.7 earthquake 3 km NE of Penngrove, California

A magnitude 1.7 earthquake struck 3 km NE of Penngrove, California on Mon, Jan 5, 1981, 10:53 PM PST (06:53 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.1 4 km SSE of Pittsburg, California. This one was a foreshock.

Penngrove 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
1.7 (md), micro
Local time
UTC
1981-01-06 06:53:20 UTC
Depth
3.8 km (2.4 mi), shallow
Epicenter
38.320° N, 122.640° 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 0.5 km horizontally, 3.3 km in depth
Magnitude uncertainty
±0.34
Depth from
From location
Station coverage gap
130°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 126 in the 60 days after this one and 49 in the 30 days before it.

After

  1. 2.14 km SSE of Pittsburg, California · 16695 days ago · 14 km deep · 77 km away
  2. 2.12 km NNE of San Leandro, California · 16694 days ago · 3 km deep · 78 km away
  3. 2.17 km W of Cobb, California · 16694 days ago · 1 km deep · 58 km away
  4. 1.64 km WSW of Cobb, California · 16694 days ago · 1 km deep · 55 km away
  5. 2.67 km WSW of Cobb, California · 16693 days ago · 0 km deep · 56 km away
  6. 1.611 km W of Cobb, California · 16693 days ago · 2 km deep · 59 km away
  7. 1.610 km SW of Brentwood, California · 16693 days ago · 16 km deep · 92 km away
  8. 1.57 km WSW of Cobb, California · 16693 days ago · 3 km deep · 56 km away
  9. 1.812 km E of Lower Lake, California · 16692 days ago · 4 km deep · 68 km away
  10. 1.86 km W of Cobb, California · 16691 days ago · 0 km deep · 56 km away
  11. 2.36 km W of Cobb, California · 16691 days ago · 4 km deep · 57 km away
  12. 1.83 km SE of Clear Lake Riviera, California · 16691 days ago · 6 km deep · 68 km away
  13. 1.96 km WSW of Cobb, California · 16691 days ago · 1 km deep · 56 km away
  14. 1.94 km SE of Clear Lake Riviera, California · 16690 days ago · 5 km deep · 67 km away
  15. 2.54 km ENE of Penngrove, California · 16690 days ago · 0 km deep · 2 km away
  16. 1.62 km SSW of Moskowite Corner, California · 16690 days ago · 11 km deep · 40 km away
  17. 2.28 km ESE of Hidden Valley Lake, California · 16689 days ago · 8 km deep · 54 km away
  18. 1.56 km WSW of Cobb, California · 16689 days ago · 1 km deep · 55 km away
  19. 2.57 km WSW of Cobb, California · 16688 days ago · 1 km deep · 56 km away
  20. 1.81 km ESE of Pittsburg, California · 16687 days ago · 17 km deep · 75 km away
  21. 1.63 km E of Lucerne, California · 16686 days ago · 5 km deep · 86 km away
  22. 1.89 km WSW of Cobb, California · 16686 days ago · 1 km deep · 56 km away
  23. 1.51 km NNW of Clear Lake Riviera, California · 16685 days ago · 8 km deep · 73 km away
  24. 1.66 km WSW of Cobb, California · 16684 days ago · 1 km deep · 56 km away
  25. 1.61 km SW of Alamo, California · 16684 days ago · 9 km deep · 75 km away
  26. 1.75 km NNE of Pittsburg, California · 16684 days ago · 12 km deep · 74 km away
  27. 1.912 km WNW of Calistoga, California · 16684 days ago · 13 km deep · 36 km away
  28. 2.36 km WSW of Cobb, California · 16684 days ago · 2 km deep · 56 km away
  29. 2.04 km WSW of Cobb, California · 16684 days ago · -1 km deep · 56 km away
  30. 2.16 km W of Cobb, California · 16682 days ago · 3 km deep · 58 km away
  31. 1.66 km W of Cobb, California · 16682 days ago · 3 km deep · 57 km away
  32. 1.66 km W of Cobb, California · 16682 days ago · 4 km deep · 57 km away
  33. 2.53 km ESE of Berkeley, California · 16682 days ago · 12 km deep · 62 km away
  34. 1.55 km WSW of Cobb, California · 16682 days ago · 0 km deep · 55 km away
  35. 2.610 km SW of Brentwood, California · 16682 days ago · 16 km deep · 93 km away
  36. 2.46 km WSW of Cobb, California · 16680 days ago · 5 km deep · 56 km away
  37. 2.26 km W of Cobb, California · 16680 days ago · 4 km deep · 57 km away
  38. 1.54 km SE of Clear Lake Riviera, California · 16680 days ago · 3 km deep · 68 km away
  39. 1.67 km WSW of Cobb, California · 16680 days ago · 2 km deep · 56 km away
  40. 1.96 km SW of Kenwood, California · 16680 days ago · 0 km deep · 7 km away
  41. 2.47 km SW of Brentwood, California · 16679 days ago · 16 km deep · 92 km away
  42. 2.69 km WSW of Cobb, California · 16678 days ago · 2 km deep · 56 km away
  43. 1.810 km SW of Brentwood, California · 16677 days ago · 14 km deep · 92 km away
  44. 1.59 km WSW of Cobb, California · 16677 days ago · 1 km deep · 56 km away
  45. 1.83 km SW of Muir Beach, California · 16676 days ago · 2 km deep · 54 km away
  46. 2.61 km N of Pleasant Hill, California · 16676 days ago · 9 km deep · 64 km away
  47. 1.72 km N of Ashland, California · 16675 days ago · 6 km deep · 82 km away
  48. 1.89 km WSW of Cobb, California · 16675 days ago · 2 km deep · 56 km away
  49. 2.44 km WSW of Cobb, California · 16673 days ago · 2 km deep · 55 km away
  50. 1.93 km NNE of Larkfield-Wikiup, California · 16673 days ago · 3 km deep · 26 km away
  51. 1.66 km W of Cobb, California · 16673 days ago · 3 km deep · 57 km away
  52. 1.76 km WSW of Cobb, California · 16671 days ago · 0 km deep · 55 km away
  53. 2.010 km SW of Brentwood, California · 16670 days ago · 14 km deep · 93 km away
  54. 1.56 km W of Cobb, California · 16670 days ago · 3 km deep · 57 km away
  55. 1.66 km NNE of Larkfield-Wikiup, California · 16669 days ago · 3 km deep · 28 km away
  56. 1.511 km E of Blackhawk, California · 16668 days ago · 5 km deep · 92 km away
  57. 1.56 km W of Cobb, California · 16667 days ago · 2 km deep · 57 km away
  58. 1.810 km W of Cobb, California · 16666 days ago · 1 km deep · 60 km away
  59. 1.6Northern California · 16664 days ago · 1 km deep · 56 km away
  60. 1.84 km NNE of Healdsburg, California · 16663 days ago · 35 km deep · 41 km away

The first 60 of 126.

Before

  1. 2.23 km NE of Penngrove, California · 16696 days ago · 5 km deep · 0 km away
  2. 2.13 km NE of Penngrove, California · 16696 days ago · 5 km deep · 0 km away
  3. 1.78 km N of Geyserville, California · 16696 days ago · 5 km deep · 57 km away
  4. 1.93 km NE of Penngrove, California · 16696 days ago · 5 km deep · 0 km away
  5. 2.91 km N of Pleasant Hill, California · 16697 days ago · 10 km deep · 64 km away
  6. 2.16 km WSW of Cobb, California · 16698 days ago · 1 km deep · 54 km away
  7. 1.821 km W of Bolinas, California · 16698 days ago · 4 km deep · 54 km away
  8. 1.66 km W of Cobb, California · 16699 days ago · 3 km deep · 56 km away
  9. 2.81 km WSW of Geyserville, California · 16700 days ago · 5 km deep · 49 km away
  10. 2.12 km NW of Emerald Lake Hills, California · 16701 days ago · 3 km deep · 98 km away
  11. 1.77 km WSW of Cobb, California · 16701 days ago · 1 km deep · 56 km away
  12. 1.84 km ESE of San Ramon, California · 16701 days ago · 8 km deep · 88 km away
  13. 3.51 km NNE of Ashland, California · 16701 days ago · 10 km deep · 82 km away
  14. 2.37 km WSW of Cobb, California · 16704 days ago · 1 km deep · 56 km away
  15. 2.20 km ESE of Concord, California · 16704 days ago · 15 km deep · 66 km away
  16. 2.12 km NNE of Clear Lake Riviera, California · 16704 days ago · 1 km deep · 73 km away
  17. 1.84 km ESE of San Ramon, California · 16704 days ago · 7 km deep · 88 km away
  18. 2.00 km ESE of Concord, California · 16706 days ago · 14 km deep · 66 km away
  19. 1.93 km SW of San Bruno, California · 16706 days ago · 11 km deep · 81 km away
  20. 1.69 km NNE of Hopland, California · 16706 days ago · 5 km deep · 89 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1058921. Read Tue, Sep 22, 2026, 11:31 PM UTC.