Washington earthquakes

M1.5 earthquake 5 km NE of Marrowstone, Washington

A magnitude 1.5 earthquake struck 5 km NE of Marrowstone, Washington on Sat, Aug 17, 1991, 5:29 AM PDT (12:29 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M3.0 6 km NW of Orcas, Washington. This one was a foreshock.

Marrowstone forecastMore in Washington

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-08-17 12:29:35 UTC
Depth
25.8 km (16.0 mi), shallow
Epicenter
48.084° N, 122.630° 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 0.6 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
71°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 2.517 km S of Glacier, Washington · 12830 days ago · -1 km deep · 88 km away
  2. 2.021 km ESE of Darrington, Washington · 12829 days ago · 0 km deep · 99 km away
  3. 2.022 km E of Darrington, Washington · 12829 days ago · 0 km deep · 100 km away
  4. 1.52 km SSE of Orcas, Washington · 12827 days ago · 56 km deep · 59 km away
  5. 2.33 km W of Wauna, Washington · 12826 days ago · 20 km deep · 79 km away
  6. 2.04 km N of Friday Harbor, Washington · 12826 days ago · 54 km deep · 62 km away
  7. 2.21 km NNW of Lake Roesiger, Washington · 12825 days ago · 11 km deep · 53 km away
  8. 1.85 km E of Belfair, Washington · 12824 days ago · 45 km deep · 71 km away
  9. 1.91 km NW of Lake Roesiger, Washington · 12823 days ago · 11 km deep · 52 km away
  10. 1.81 km N of Lake Roesiger, Washington · 12822 days ago · 11 km deep · 53 km away
  11. 1.98 km SSE of Coupeville, Washington · 12822 days ago · 20 km deep · 7 km away
  12. 2.25 km ESE of Alger, Washington · 12821 days ago · 2 km deep · 63 km away
  13. 1.73 km SW of Tacoma, Washington · 12819 days ago · 49 km deep · 96 km away
  14. 2.01 km NW of Lake Roesiger, Washington · 12817 days ago · 11 km deep · 52 km away
  15. 1.53 km SSW of Des Moines, Washington · 12813 days ago · 18 km deep · 82 km away
  16. 1.63 km SE of Lake Marcel-Stillwater, WA · 12809 days ago · 7 km deep · 72 km away
  17. 2.01 km SE of Erlands Point-Kitsap Lake, Washington · 12808 days ago · 5 km deep · 55 km away
  18. 1.73 km S of Maple Falls, Washington · 12808 days ago · 16 km deep · 98 km away
  19. 1.84 km NW of Marrowstone, Washington · 12808 days ago · 53 km deep · 7 km away
  20. 2.06 km ESE of Alger, Washington · 12807 days ago · 8 km deep · 64 km away
  21. 1.60 km ENE of Erlands Point-Kitsap Lake, Washington · 12807 days ago · 2 km deep · 54 km away
  22. 2.20 km SE of Erlands Point-Kitsap Lake, Washington · 12805 days ago · 2 km deep · 55 km away
  23. 2.114 km SW of Baring, Washington · 12803 days ago · 10 km deep · 87 km away
  24. 1.70 km S of Erlands Point-Kitsap Lake, Washington · 12802 days ago · 5 km deep · 55 km away
  25. 2.41 km ESE of Erlands Point-Kitsap Lake, Washington · 12802 days ago · 2 km deep · 55 km away
  26. 1.90 km SE of Erlands Point-Kitsap Lake, Washington · 12802 days ago · 3 km deep · 55 km away
  27. 2.36 km NW of Orcas, Washington · 12801 days ago · 18 km deep · 68 km away
  28. 3.06 km NW of Orcas, Washington · 12801 days ago · 19 km deep · 68 km away
  29. 1.74 km NE of White Center, Washington · 12800 days ago · 27 km deep · 65 km away
  30. 1.62 km WNW of Sammamish, Washington · 12796 days ago · -1 km deep · 62 km away
  31. 2.04 km NE of Bryant, Washington · 12795 days ago · 11 km deep · 44 km away
  32. 1.68 km ENE of Lake Marcel-Stillwater, Washington · 12794 days ago · 3 km deep · 74 km away
  33. 2.04 km SSE of Grapeview, Washington · 12793 days ago · 18 km deep · 89 km away
  34. 1.65 km NW of Federal Way, Washington · 12790 days ago · 14 km deep · 84 km away
  35. 2.05 km NNE of Lake Marcel-Stillwater, Washington · 12789 days ago · 17 km deep · 67 km away
  36. 1.715 km W of Brinnon, Washington · 12788 days ago · 43 km deep · 59 km away
  37. 2.413 km SSW of Blyn, Washington · 12779 days ago · 42 km deep · 39 km away
  38. 1.63 km E of Deming, Washington · 12774 days ago · 1 km deep · 89 km away
  39. 1.85 km NNE of Kingston, Washington · 12773 days ago · 22 km deep · 30 km away

Before

  1. 1.56 km ESE of Alger, Washington · 12834 days ago · -1 km deep · 63 km away
  2. 2.03 km WNW of Maple Valley, Washington · 12841 days ago · 5 km deep · 86 km away
  3. 2.21 km WSW of Belfair, Washington · 12844 days ago · 0 km deep · 73 km away
  4. 1.71 km E of Edmonds, Washington · 12847 days ago · 21 km deep · 37 km away
  5. 1.74 km SW of Sultan, Washington · 12848 days ago · 17 km deep · 64 km away
  6. 2.14 km NNW of Hamilton, Washington · 12852 days ago · -1 km deep · 69 km away
  7. 3.24 km SSE of Bethel, Washington · 12853 days ago · 24 km deep · 70 km away
  8. 1.54 km SW of Fall City, Washington · 12855 days ago · 19 km deep · 81 km away
  9. 2.12 km SSE of Three Lakes, Washington · 12857 days ago · 3 km deep · 51 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10278098. Read Fri, Oct 2, 2026, 11:49 AM UTC.