Washington earthquakes

M1.6 earthquake 3 km S of Mount Vernon, Washington

A magnitude 1.6 earthquake struck 3 km S of Mount Vernon, Washington on Sun, Oct 16, 1983, 10:31 PM PDT (05:31 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M2.4 8 km NW of Friday Harbor, Washington. This one was a foreshock.

Mount Vernon forecastMore in Washington

Map

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

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The earthquake

Magnitude
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1983-10-17 05:31:50 UTC
Depth
14.6 km (9.1 mi), shallow
Epicenter
48.388° N, 122.335° 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 0.1 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
182°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 1.710 km NNW of Six Mile, Canada · 15693 days ago · 26 km deep · 87 km away
  2. 2.36 km WSW of Lake Cavanaugh, Washington · 15692 days ago · 11 km deep · 19 km away
  3. 2.48 km NW of Friday Harbor, Washington · 15692 days ago · 51 km deep · 61 km away
  4. 2.17 km WNW of Orcas, Washington · 15686 days ago · 15 km deep · 58 km away
  5. 1.56 km NNE of Orcas, Washington · 15686 days ago · 12 km deep · 51 km away
  6. 1.99 km WNW of Orcas, Washington · 15685 days ago · 10 km deep · 60 km away
  7. 2.28 km WNW of Orcas, Washington · 15685 days ago · 14 km deep · 59 km away
  8. 1.71 km NNE of Union Hill-Novelty Hill, Washington · 15678 days ago · 10 km deep · 81 km away
  9. 1.55 km SW of Hansville, Washington · 15678 days ago · 21 km deep · 59 km away
  10. 1.67 km WNW of Orcas, Washington · 15678 days ago · 16 km deep · 58 km away
  11. 2.45 km WSW of Lake Cavanaugh, Washington · 15677 days ago · 6 km deep · 20 km away
  12. 2.37 km WNW of Orcas, Washington · 15677 days ago · 18 km deep · 58 km away
  13. 1.87 km WNW of Orcas, Washington · 15676 days ago · 13 km deep · 58 km away
  14. 2.13 km ENE of May Creek, Washington · 15674 days ago · 10 km deep · 79 km away
  15. 1.8Washington · 15673 days ago · 24 km deep · 43 km away
  16. 1.94 km NNW of Bryn Mawr-Skyway, Washington · 15663 days ago · 11 km deep · 95 km away
  17. 1.73 km NNW of White Center, Washington · 15662 days ago · 21 km deep · 94 km away
  18. 2.07 km NE of Lofall, Washington · 15661 days ago · 19 km deep · 62 km away
  19. 1.55 km NNE of Bryant, Washington · 15658 days ago · 15 km deep · 20 km away
  20. 1.51 km SE of Coupeville, Washington · 15656 days ago · 20 km deep · 32 km away
  21. 2.210 km ENE of Verlot, Washington · 15650 days ago · 13 km deep · 58 km away
  22. 1.98 km NNE of Lake Marcel-Stillwater, Washington · 15649 days ago · -1 km deep · 77 km away
  23. 1.67 km S of River Road, Washington · 15649 days ago · 0 km deep · 74 km away
  24. 1.51 km NE of Quilcene, Washington · 15649 days ago · 4 km deep · 73 km away
  25. 2.17 km SSW of La Conner, Washington · 15649 days ago · 17 km deep · 15 km away
  26. 2.3Washington · 15648 days ago · 19 km deep · 15 km away
  27. 2.22 km NW of Deming, Washington · 15647 days ago · 1 km deep · 51 km away
  28. 1.72 km N of Deming, Washington · 15647 days ago · 21 km deep · 52 km away
  29. 1.55 km N of Sedro-Woolley, Washington · 15645 days ago · -1 km deep · 20 km away
  30. 2.31 km E of Clyde Hill, Washington · 15643 days ago · 24 km deep · 85 km away
  31. 1.80 km NNE of Ferndale, Washington · 15637 days ago · 19 km deep · 55 km away
  32. 1.54 km NE of Conway, Washington · 15637 days ago · 5 km deep · 3 km away

Before

  1. 1.53 km WSW of Chico, Washington · 15695 days ago · 12 km deep · 93 km away
  2. 1.712 km NNW of Concrete, Washington · 15695 days ago · -1 km deep · 47 km away
  3. 1.89 km ESE of Verlot, Washington · 15695 days ago · 3 km deep · 62 km away
  4. 2.36 km WNW of Edison, Washington · 15698 days ago · 5 km deep · 26 km away
  5. 2.29 km NNW of Lake Cavanaugh, Washington · 15699 days ago · -1 km deep · 21 km away
  6. 1.56 km W of Rockport, Washington · 15701 days ago · 1 km deep · 49 km away
  7. 1.52 km NE of Woods Creek, Washington · 15703 days ago · 12 km deep · 64 km away
  8. 1.92 km SW of Alger, Washington · 15705 days ago · 62 km deep · 24 km away
  9. 1.85 km E of Granite Falls, Washington · 15705 days ago · -1 km deep · 46 km away
  10. 1.62 km WNW of Keyport, Washington · 15706 days ago · 23 km deep · 79 km away
  11. 2.37 km S of Kendall, Washington · 15706 days ago · 1 km deep · 54 km away
  12. 2.16 km ENE of Deming, Washington · 15707 days ago · 2 km deep · 53 km away
  13. 2.46 km ENE of Deming, Washington · 15707 days ago · 1 km deep · 53 km away
  14. 1.54 km SE of Oak Bay, Canada · 15708 days ago · 40 km deep · 69 km away
  15. 1.98 km SSE of Metchosin, Canada · 15708 days ago · 19 km deep · 85 km away
  16. 2.17 km NW of Lyman, Washington · 15713 days ago · 19 km deep · 26 km away
  17. 1.712 km NE of Snoqualmie, Washington · 15714 days ago · 12 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10169043. Read Sun, Oct 4, 2026, 6:02 AM UTC.