Washington earthquakes

M1.8 earthquake 9 km S of Anacortes, Washington

A magnitude 1.8 earthquake struck 9 km S of Anacortes, Washington on Mon, Jul 4, 1983, 4:11 PM PDT (23:11 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M2.1 3 km WNW of Orcas, Washington. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.8 (md), micro
Local time
UTC
1983-07-04 23:11:45 UTC
Depth
21.2 km (13.2 mi), shallow
Epicenter
48.432° N, 122.627° 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 0.8 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
83°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 2.13 km WNW of Orcas, Washington · 15784 days ago · 10 km deep · 33 km away
  2. 1.95 km ENE of Verlot, Washington · 15784 days ago · 13 km deep · 76 km away
  3. 1.78 km N of Sedro-Woolley, Washington · 15783 days ago · 12 km deep · 34 km away
  4. 2.45 km W of Brinnon, Washington · 15782 days ago · 47 km deep · 87 km away
  5. 2.00 km WSW of Port Ludlow, Washington · 15780 days ago · 55 km deep · 57 km away
  6. 1.82 km ESE of Maltby, Washington · 15779 days ago · 22 km deep · 81 km away
  7. 2.54 km NNW of Verlot, Washington · 15777 days ago · 14 km deep · 69 km away
  8. 1.87 km SSE of Verlot, Washington · 15772 days ago · -1 km deep · 80 km away
  9. 2.217 km NNE of May Creek, Washington · 15769 days ago · 0 km deep · 91 km away
  10. 1.64 km S of Monroe, Washington · 15762 days ago · -1 km deep · 84 km away
  11. 2.03 km SW of Chico, Washington · 15761 days ago · 14 km deep · 93 km away
  12. 1.55 km SSE of Swede Heaven, Washington · 15758 days ago · 9 km deep · 72 km away
  13. 2.31 km N of Seabeck, Washington · 15757 days ago · 48 km deep · 88 km away
  14. 2.11 km ENE of Clyde Hill, Washington · 15757 days ago · 24 km deep · 94 km away
  15. 1.76 km WNW of La Conner, Washington · 15755 days ago · 22 km deep · 4 km away
  16. 1.75 km WSW of Coupeville, Washington · 15755 days ago · 20 km deep · 27 km away
  17. 1.54 km W of Coupeville, Washington · 15753 days ago · 17 km deep · 26 km away
  18. 1.6Puget Sound region, Washington · 15750 days ago · 7 km deep · 89 km away
  19. 2.711 km WNW of Coupeville, Washington · 15740 days ago · 8 km deep · 23 km away
  20. 1.73 km ENE of Granite Falls, Washington · 15732 days ago · -1 km deep · 64 km away
  21. 2.27 km WNW of Orcas, Washington · 15731 days ago · 14 km deep · 37 km away
  22. 3.911 km W of Port Ludlow, Washington · 15731 days ago · 51 km deep · 58 km away
  23. 2.62 km SSE of Tulalip Bay, Washington · 15731 days ago · 14 km deep · 52 km away
  24. 2.53 km SE of Bangor Trident Base, Washington · 15728 days ago · 19 km deep · 82 km away
  25. 2.03 km NNE of Camano, Washington · 15727 days ago · 23 km deep · 27 km away

Before

  1. 1.51 km ESE of Martha Lake, Washington · 15790 days ago · 20 km deep · 72 km away
  2. 2.127 km ESE of Glacier, Washington · 15790 days ago · -1 km deep · 86 km away
  3. 1.51 km E of Roosevelt, Washington · 15792 days ago · 18 km deep · 76 km away
  4. 1.57 km ENE of Verlot, Washington · 15793 days ago · 8 km deep · 78 km away
  5. 2.113 km S of Chilliwack, Canada · 15795 days ago · -1 km deep · 85 km away
  6. 2.15 km S of Lake Roesiger, Washington · 15801 days ago · 15 km deep · 76 km away
  7. 2.010 km NW of Concrete, Washington · 15805 days ago · 0 km deep · 63 km away
  8. 1.65 km E of Ault Field, Washington · 15805 days ago · 23 km deep · 10 km away
  9. 1.87 km NW of Orcas, Washington · 15808 days ago · 15 km deep · 38 km away
  10. 1.64 km N of Bryant, Washington · 15812 days ago · 16 km deep · 39 km away
  11. 1.74 km WSW of Shoreline, Washington · 15814 days ago · 19 km deep · 79 km away
  12. 2.03 km NE of Lake Roesiger, Washington · 15815 days ago · 14 km deep · 72 km away
  13. 2.14 km NE of Lake Roesiger, Washington · 15815 days ago · 14 km deep · 73 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10156013. Read Tue, Sep 22, 2026, 4:01 PM UTC.