Washington earthquakes

M1.9 earthquake 4 km S of Lyman, Washington

A magnitude 1.9 earthquake struck 4 km S of Lyman, Washington on Fri, Mar 16, 1984, 3:18 PM PST (23:18 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M2.9 1 km WNW of Keyport, Washington. This one was a foreshock.

Sedro-Woolley 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
1984-03-16 23:18:50 UTC
Depth
15.8 km (9.8 mi), shallow
Epicenter
48.490° N, 122.054° 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 2.1 km horizontally, 3.6 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
145°
Stations used
6

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 15 in the 30 days before it.

After

  1. 1.91 km ESE of Clyde Hill, Washington · 15529 days ago · 23 km deep · 97 km away
  2. 2.25 km S of Concrete, Washington · 15529 days ago · 2 km deep · 24 km away
  3. 1.51 km E of Clyde Hill, Washington · 15526 days ago · 24 km deep · 96 km away
  4. 1.93 km W of Blyn, Washington · 15526 days ago · -1 km deep · 91 km away
  5. 2.91 km WNW of Keyport, Washington · 15525 days ago · 18 km deep · 97 km away
  6. 1.67 km ESE of Oso, Washington · 15524 days ago · -1 km deep · 31 km away
  7. 2.34 km WSW of Coupeville, Washington · 15517 days ago · 24 km deep · 60 km away
  8. 1.510 km S of Swede Heaven, Washington · 15511 days ago · 14 km deep · 41 km away
  9. 2.15 km SE of Monroe, Washington · 15510 days ago · 24 km deep · 76 km away
  10. 2.35 km NW of Orcas, Washington · 15506 days ago · 17 km deep · 71 km away
  11. 1.60 km E of Medina, Washington · 15501 days ago · 24 km deep · 97 km away
  12. 1.57 km NE of Verlot, Washington · 15501 days ago · -1 km deep · 46 km away
  13. 1.72 km SSW of Everett, Washington · 15498 days ago · 26 km deep · 60 km away
  14. 2.09 km E of Orcas, Washington · 15494 days ago · 6 km deep · 58 km away
  15. 1.73 km S of Alger, Washington · 15491 days ago · 18 km deep · 23 km away
  16. 2.92 km S of Ames Lake, Washington · 15490 days ago · 9 km deep · 98 km away
  17. 1.96 km SSE of Concrete, Washington · 15488 days ago · 3 km deep · 26 km away
  18. 1.66 km NW of Burlington, Washington · 15487 days ago · 18 km deep · 25 km away
  19. 1.710 km SSW of Darrington, Washington · 15486 days ago · 18 km deep · 48 km away
  20. 1.94 km SSW of River Road, Washington · 15484 days ago · -1 km deep · 96 km away
  21. 1.514 km ENE of Lake Marcel-Stillwater, Washington · 15483 days ago · 27 km deep · 88 km away
  22. 1.74 km E of Granite Falls, Washington · 15482 days ago · -1 km deep · 46 km away
  23. 2.19 km NNW of Carlsborg, Washington · 15480 days ago · 40 km deep · 95 km away
  24. 2.05 km ENE of Anacortes, Washington · 15477 days ago · 17 km deep · 37 km away
  25. 2.14 km E of Machias, Washington · 15472 days ago · 7 km deep · 56 km away

Before

  1. 3.4Washington · 15532 days ago · -1 km deep · 26 km away
  2. 2.66 km W of Rockport, Washington · 15532 days ago · 4 km deep · 27 km away
  3. 1.94 km ENE of Lake McMurray, Washington · 15534 days ago · 4 km deep · 20 km away
  4. 2.71 km SW of Mountlake Terrace, Washington · 15534 days ago · 22 km deep · 82 km away
  5. 2.017 km E of Verlot, Washington · 15537 days ago · 8 km deep · 60 km away
  6. 1.86 km NW of Deming, Washington · 15540 days ago · 10 km deep · 45 km away
  7. 1.65 km WSW of Coupeville, Washington · 15542 days ago · 16 km deep · 60 km away
  8. 2.48 km WNW of Picnic Point, Washington · 15545 days ago · 14 km deep · 70 km away
  9. 2.34 km NNW of Kingston, Washington · 15545 days ago · 19 km deep · 80 km away
  10. 1.64 km S of Lake McMurray, Washington · 15546 days ago · 11 km deep · 27 km away
  11. 2.04 km S of Lake McMurray, Washington · 15546 days ago · 12 km deep · 27 km away
  12. 1.93 km SSW of Quilcene, Washington · 15550 days ago · -1 km deep · 99 km away
  13. 2.012 km N of Jamestown, Washington · 15551 days ago · 25 km deep · 83 km away
  14. 1.84 km WNW of Everett, Washington · 15557 days ago · 17 km deep · 58 km away
  15. 2.03 km SW of Duvall, Washington · 15561 days ago · 8 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10174613. Read Thu, Sep 24, 2026, 11:51 AM UTC.