Washington earthquakes

M1.7 earthquake 12 km NNW of Concrete, Washington

A magnitude 1.7 earthquake struck 12 km NNW of Concrete, Washington on Fri, Oct 14, 1983, 1:47 PM PDT (20:47 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.3 6 km WSW of Lake Cavanaugh, 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
1.7 (md), micro
Local time
UTC
1983-10-14 20:47:15 UTC
Depth
-1.1 km (-0.7 mi), shallow
Epicenter
48.639° N, 121.831° 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 0.7 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
194°, 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: 24 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 1.63 km S of Mount Vernon, Washington · 15681 days ago · 15 km deep · 47 km away
  2. 2.36 km WSW of Lake Cavanaugh, Washington · 15680 days ago · 11 km deep · 42 km away
  3. 2.48 km NW of Friday Harbor, Washington · 15680 days ago · 51 km deep · 94 km away
  4. 2.17 km WNW of Orcas, Washington · 15675 days ago · 15 km deep · 89 km away
  5. 1.56 km NNE of Orcas, Washington · 15674 days ago · 12 km deep · 79 km away
  6. 1.99 km WNW of Orcas, Washington · 15674 days ago · 10 km deep · 91 km away
  7. 2.28 km WNW of Orcas, Washington · 15673 days ago · 14 km deep · 90 km away
  8. 1.67 km WNW of Orcas, Washington · 15666 days ago · 16 km deep · 88 km away
  9. 2.45 km WSW of Lake Cavanaugh, Washington · 15666 days ago · 6 km deep · 41 km away
  10. 2.37 km WNW of Orcas, Washington · 15666 days ago · 18 km deep · 89 km away
  11. 1.87 km WNW of Orcas, Washington · 15664 days ago · 13 km deep · 89 km away
  12. 2.13 km ENE of May Creek, Washington · 15663 days ago · 10 km deep · 88 km away
  13. 1.8Washington · 15661 days ago · 24 km deep · 89 km away
  14. 1.55 km NNE of Bryant, Washington · 15646 days ago · 15 km deep · 45 km away
  15. 1.51 km SE of Coupeville, Washington · 15644 days ago · 20 km deep · 78 km away
  16. 2.210 km ENE of Verlot, Washington · 15638 days ago · 13 km deep · 58 km away
  17. 1.98 km NNE of Lake Marcel-Stillwater, Washington · 15638 days ago · -1 km deep · 97 km away
  18. 2.17 km SSW of La Conner, Washington · 15637 days ago · 17 km deep · 61 km away
  19. 2.3Washington · 15636 days ago · 19 km deep · 53 km away
  20. 2.22 km NW of Deming, Washington · 15636 days ago · 1 km deep · 38 km away
  21. 1.72 km N of Deming, Washington · 15635 days ago · 21 km deep · 37 km away
  22. 1.55 km N of Sedro-Woolley, Washington · 15634 days ago · -1 km deep · 31 km away
  23. 1.80 km NNE of Ferndale, Washington · 15626 days ago · 19 km deep · 60 km away
  24. 1.54 km NE of Conway, Washington · 15625 days ago · 5 km deep · 46 km away

Before

  1. 1.89 km ESE of Verlot, Washington · 15684 days ago · 3 km deep · 67 km away
  2. 2.36 km WNW of Edison, Washington · 15687 days ago · 5 km deep · 50 km away
  3. 2.29 km NNW of Lake Cavanaugh, Washington · 15688 days ago · -1 km deep · 30 km away
  4. 1.56 km W of Rockport, Washington · 15689 days ago · 1 km deep · 21 km away
  5. 1.52 km NE of Woods Creek, Washington · 15692 days ago · 12 km deep · 82 km away
  6. 1.92 km SW of Alger, Washington · 15694 days ago · 62 km deep · 39 km away
  7. 1.85 km E of Granite Falls, Washington · 15694 days ago · -1 km deep · 62 km away
  8. 2.37 km S of Kendall, Washington · 15695 days ago · 1 km deep · 32 km away
  9. 2.16 km ENE of Deming, Washington · 15696 days ago · 2 km deep · 32 km away
  10. 2.46 km ENE of Deming, Washington · 15696 days ago · 1 km deep · 33 km away
  11. 2.17 km NW of Lyman, Washington · 15701 days ago · 19 km deep · 23 km away
  12. 1.82 km E of Granite Falls, Washington · 15712 days ago · -1 km deep · 62 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10168358. Read Tue, Sep 22, 2026, 4:15 PM UTC.