Washington earthquakes

M1.9 earthquake 3 km NW of Rockport, Washington

A magnitude 1.9 earthquake struck 3 km NW of Rockport, Washington on Mon, Apr 4, 1983, 5:10 AM PST (13:10 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.7 15 km NW of Port Townsend, Washington. This one was a foreshock.

Concrete 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
1.9 (md), micro
Local time
UTC
1983-04-04 13:10:20 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
48.506° N, 121.628° 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, 0.1 km in depth
Magnitude uncertainty
±0.03
Depth from
Operator assigned
Station coverage gap
166°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 31 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 1.52 km N of Skykomish, Washington · 15875 days ago · 1 km deep · 89 km away
  2. 2.715 km NW of Port Townsend, Washington · 15874 days ago · 42 km deep · 100 km away
  3. 1.82 km NNW of Lake Roesiger, Washington · 15874 days ago · 3 km deep · 61 km away
  4. 1.95 km S of Monroe, Washington · 15873 days ago · -1 km deep · 82 km away
  5. 1.76 km S of Anacortes, Washington · 15872 days ago · 24 km deep · 74 km away
  6. 2.255 km SSW of Princeton, Canada · 15867 days ago · -1 km deep · 82 km away
  7. 1.51 km WSW of Woodway, Washington · 15867 days ago · 18 km deep · 98 km away
  8. 1.810 km S of Darrington, Washington · 15865 days ago · 7 km deep · 39 km away
  9. 1.94 km NE of Camano, Washington · 15861 days ago · 22 km deep · 72 km away
  10. 1.78 km SSW of Baring, Washington · 15860 days ago · 85 km deep · 89 km away
  11. 1.60 km NNE of Bothell West, Washington · 15860 days ago · 24 km deep · 90 km away
  12. 2.23 km S of Bay View, Washington · 15859 days ago · 11 km deep · 63 km away
  13. 2.012 km S of Glacier, Washington · 15859 days ago · -1 km deep · 37 km away
  14. 1.81 km NW of Silver Firs, Washington · 15858 days ago · 22 km deep · 81 km away
  15. 2.55 km NNE of Lake McMurray, Washington · 15855 days ago · 17 km deep · 45 km away
  16. 1.85 km NE of Lake McMurray, Washington · 15855 days ago · 15 km deep · 44 km away
  17. 1.95 km NE of Lake McMurray, Washington · 15853 days ago · 16 km deep · 45 km away
  18. 2.017 km ESE of Darrington, Washington · 15853 days ago · 2 km deep · 39 km away
  19. 2.014 km NNE of May Creek, Washington · 15851 days ago · 12 km deep · 61 km away
  20. 1.55 km NNE of Woods Creek, Washington · 15851 days ago · 14 km deep · 67 km away
  21. 1.99 km NNE of Sedro-Woolley, Washington · 15850 days ago · 15 km deep · 43 km away
  22. 2.75 km N of Port Ludlow, Washington · 15849 days ago · 18 km deep · 98 km away
  23. 2.96 km WSW of Lake Cavanaugh, Washington · 15847 days ago · 8 km deep · 41 km away
  24. 1.61 km ESE of Inglewood-Finn Hill, Washington · 15846 days ago · 24 km deep · 98 km away
  25. 1.51 km W of Machias, Washington · 15830 days ago · 2 km deep · 67 km away
  26. 1.81 km SE of Inglewood-Finn Hill, Washington · 15830 days ago · 23 km deep · 99 km away
  27. 1.71 km ESE of Inglewood-Finn Hill, Washington · 15830 days ago · 25 km deep · 98 km away
  28. 3.08 km SW of Index, Washington · 15826 days ago · 10 km deep · 82 km away
  29. 2.320 km SSE of Marblemount, Washington · 15826 days ago · 0 km deep · 28 km away
  30. 1.911 km NW of Coupeville, Washington · 15819 days ago · 21 km deep · 91 km away
  31. 1.61 km ESE of Inglewood-Finn Hill, Washington · 15818 days ago · 25 km deep · 98 km away

Before

  1. 1.71 km S of Bay View, Washington · 15877 days ago · 16 km deep · 63 km away
  2. 2.710 km NNE of Snoqualmie, Washington · 15878 days ago · 12 km deep · 100 km away
  3. 1.61 km N of Ames Lake, Washington · 15881 days ago · 69 km deep · 99 km away
  4. 2.33 km WNW of La Conner, Washington · 15884 days ago · 18 km deep · 68 km away
  5. 2.11 km S of Lake Marcel-Stillwater, Washington · 15887 days ago · 12 km deep · 95 km away
  6. 2.35 km WNW of Meadowdale, Washington · 15894 days ago · 15 km deep · 91 km away
  7. 2.34 km ESE of Cathcart, Washington · 15900 days ago · 17 km deep · 81 km away
  8. 2.22 km E of Mount Vernon, Washington · 15900 days ago · 14 km deep · 50 km away
  9. 2.013 km E of Verlot, Washington · 15901 days ago · 4 km deep · 45 km away
  10. 1.65 km N of North Sultan, Washington · 15905 days ago · 12 km deep · 65 km away
  11. 1.87 km SE of Deming, Washington · 15906 days ago · -1 km deep · 49 km away
  12. 1.92 km NNW of Skykomish, Washington · 15907 days ago · 0 km deep · 88 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10153713. Read Tue, Sep 22, 2026, 10:51 AM UTC.