Washington earthquakes

M1.6 earthquake 7 km ESE of Oso, Washington

A magnitude 1.6 earthquake struck 7 km ESE of Oso, Washington on Sat, Mar 24, 1984, 1:31 PM PST (21:31 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M1.8 2 km NW of Fall City, 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
1.6 (md), micro
Local time
UTC
1984-03-24 21:31:51 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
48.253° N, 121.837° 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, 0.2 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
300°, 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: 33 in the 60 days after this one and 23 in the 30 days before it.

After

  1. 1.82 km NW of Fall City, Washington · 15517 days ago · 2 km deep · 75 km away
  2. 2.24 km WNW of Fall City, Washington · 15517 days ago · 1 km deep · 75 km away
  3. 2.34 km WSW of Coupeville, Washington · 15515 days ago · 24 km deep · 68 km away
  4. 1.510 km S of Swede Heaven, Washington · 15509 days ago · 14 km deep · 11 km away
  5. 2.15 km SE of Monroe, Washington · 15508 days ago · 24 km deep · 49 km away
  6. 2.35 km NW of Orcas, Washington · 15504 days ago · 17 km deep · 95 km away
  7. 1.72 km SW of Issaquah, Washington · 15504 days ago · 17 km deep · 84 km away
  8. 2.14 km WNW of Fall City, Washington · 15502 days ago · 1 km deep · 75 km away
  9. 1.93 km NW of Fall City, Washington · 15502 days ago · 1 km deep · 74 km away
  10. 2.014 km E of Tanner, Washington · 15499 days ago · 15 km deep · 89 km away
  11. 1.60 km E of Medina, Washington · 15499 days ago · 24 km deep · 76 km away
  12. 1.57 km NE of Verlot, Washington · 15498 days ago · -1 km deep · 16 km away
  13. 1.72 km SSW of Everett, Washington · 15495 days ago · 26 km deep · 43 km away
  14. 2.09 km E of Orcas, Washington · 15492 days ago · 6 km deep · 82 km away
  15. 1.73 km S of Alger, Washington · 15489 days ago · 18 km deep · 52 km away
  16. 2.92 km S of Ames Lake, Washington · 15487 days ago · 9 km deep · 72 km away
  17. 1.96 km SSE of Concrete, Washington · 15486 days ago · 3 km deep · 28 km away
  18. 1.66 km NW of Burlington, Washington · 15485 days ago · 18 km deep · 50 km away
  19. 1.710 km SSW of Darrington, Washington · 15484 days ago · 18 km deep · 18 km away
  20. 2.13 km NW of Fall City, Washington · 15483 days ago · 2 km deep · 74 km away
  21. 1.86 km NE of Tanner, Washington · 15483 days ago · 13 km deep · 83 km away
  22. 1.72 km NNW of Fall City, Washington · 15483 days ago · 4 km deep · 74 km away
  23. 2.15 km SSW of Fall City, Washington · 15481 days ago · 20 km deep · 82 km away
  24. 1.514 km ENE of Lake Marcel-Stillwater, Washington · 15481 days ago · 27 km deep · 59 km away
  25. 1.74 km E of Granite Falls, Washington · 15480 days ago · -1 km deep · 19 km away
  26. 2.05 km ENE of Anacortes, Washington · 15475 days ago · 17 km deep · 60 km away
  27. 2.14 km E of Machias, Washington · 15470 days ago · 7 km deep · 32 km away
  28. 1.74 km WNW of Orcas, Washington · 15467 days ago · 15 km deep · 95 km away
  29. 1.66 km SW of Baring, Washington · 15467 days ago · 5 km deep · 63 km away
  30. 1.81 km W of Hobart, Washington · 15466 days ago · 22 km deep · 93 km away
  31. 1.94 km NE of Vashon, Washington · 15465 days ago · 8 km deep · 96 km away
  32. 2.116 km S of Glacier, Washington · 15464 days ago · -1 km deep · 54 km away
  33. 1.6Washington · 15464 days ago · -1 km deep · 56 km away

Before

  1. 2.91 km WNW of Keyport, Washington · 15523 days ago · 18 km deep · 85 km away
  2. 1.93 km W of Blyn, Washington · 15523 days ago · -1 km deep · 94 km away
  3. 1.51 km E of Clyde Hill, Washington · 15524 days ago · 24 km deep · 74 km away
  4. 2.25 km S of Concrete, Washington · 15527 days ago · 2 km deep · 27 km away
  5. 1.91 km ESE of Clyde Hill, Washington · 15527 days ago · 23 km deep · 75 km away
  6. 1.511 km ESE of Tanner, Washington · 15527 days ago · 12 km deep · 92 km away
  7. 1.52 km SW of Chico, Washington · 15529 days ago · 12 km deep · 99 km away
  8. 1.94 km S of Lyman, Washington · 15529 days ago · 16 km deep · 31 km away
  9. 3.4Washington · 15530 days ago · -1 km deep · 24 km away
  10. 2.66 km W of Rockport, Washington · 15530 days ago · 4 km deep · 28 km away
  11. 1.94 km ENE of Lake McMurray, Washington · 15532 days ago · 4 km deep · 27 km away
  12. 2.71 km SW of Mountlake Terrace, Washington · 15532 days ago · 22 km deep · 64 km away
  13. 2.017 km E of Verlot, Washington · 15535 days ago · 8 km deep · 30 km away
  14. 2.04 km SSE of Wilderness Rim, Washington · 15536 days ago · 18 km deep · 94 km away
  15. 1.86 km NW of Deming, Washington · 15538 days ago · 10 km deep · 76 km away
  16. 1.65 km WSW of Coupeville, Washington · 15540 days ago · 16 km deep · 68 km away
  17. 2.48 km WNW of Picnic Point, Washington · 15543 days ago · 14 km deep · 58 km away
  18. 2.34 km NNW of Kingston, Washington · 15543 days ago · 19 km deep · 69 km away
  19. 1.64 km S of Lake McMurray, Washington · 15544 days ago · 11 km deep · 30 km away
  20. 2.04 km S of Lake McMurray, Washington · 15544 days ago · 12 km deep · 29 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10176818. Read Tue, Sep 22, 2026, 10:21 AM UTC.