Washington earthquakes

M1.5 earthquake 8 km ENE of Marrowstone, Washington

A magnitude 1.5 earthquake struck 8 km ENE of Marrowstone, Washington on Mon, Mar 6, 1978, 8:20 AM PST (16:20 UTC), 54 km (33 mi) below the surface.

A larger quake followed: M4.8 5 km W of Burley, 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.

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The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
1978-03-06 16:20:50 UTC
Depth
53.7 km (33.4 mi), shallow
Epicenter
48.084° N, 122.587° 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, 1.2 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
91°
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 13 in the 30 days before it.

After

  1. 1.50 km E of Inglewood-Finn Hill, Washington · 17731 days ago · 9 km deep · 49 km away
  2. 4.85 km W of Burley, Washington · 17727 days ago · 22 km deep · 74 km away
  3. 1.53 km W of Burley, Washington · 17727 days ago · 22 km deep · 75 km away
  4. 1.85 km W of Burley, Washington · 17727 days ago · 22 km deep · 74 km away
  5. 2.25 km W of Burley, Washington · 17726 days ago · 21 km deep · 75 km away
  6. 1.74 km W of Burley, Washington · 17726 days ago · 21 km deep · 74 km away
  7. 1.54 km W of Burley, Washington · 17726 days ago · 25 km deep · 74 km away
  8. 1.72 km W of La Conner, Washington · 17711 days ago · 22 km deep · 35 km away
  9. 2.110 km SE of Orcas, Washington · 17709 days ago · 56 km deep · 53 km away
  10. 2.95 km WSW of Coupeville, Washington · 17709 days ago · 21 km deep · 18 km away
  11. 4.16 km W of Burley, Washington · 17707 days ago · 21 km deep · 75 km away
  12. 2.211 km SSW of Seabeck, Washington · 17704 days ago · 16 km deep · 63 km away
  13. 1.510 km SSW of Index, Washington · 17703 days ago · 3 km deep · 82 km away
  14. 1.86 km WNW of Burley, Washington · 17701 days ago · 23 km deep · 73 km away
  15. 1.86 km W of Burley, Washington · 17701 days ago · 22 km deep · 74 km away
  16. 1.67 km ESE of Deming, Washington · 17699 days ago · 8 km deep · 87 km away
  17. 1.97 km NE of Acme, Washington · 17693 days ago · -1 km deep · 84 km away
  18. 1.55 km SE of Hansville, Washington · 17682 days ago · 50 km deep · 23 km away
  19. 2.23 km WSW of Artondale, Washington · 17682 days ago · 23 km deep · 88 km away
  20. 1.72 km W of Artondale, Washington · 17680 days ago · 23 km deep · 87 km away
  21. 1.70 km W of Lyman, Washington · 17677 days ago · -1 km deep · 62 km away
  22. 1.75 km W of Burley, Washington · 17676 days ago · 21 km deep · 74 km away
  23. 1.92 km SSE of Belfair, Washington · 17675 days ago · 19 km deep · 75 km away
  24. 1.62 km N of Artondale, Washington · 17672 days ago · 20 km deep · 85 km away
  25. 2.35 km SE of Anacortes, Washington · 17672 days ago · 14 km deep · 43 km away

Before

  1. 3.54 km NE of Blyn, Washington · 17733 days ago · 53 km deep · 28 km away
  2. 1.82 km SW of Suquamish, Washington · 17734 days ago · 17 km deep · 41 km away
  3. 1.61 km WNW of Larch Way, Washington · 17735 days ago · 13 km deep · 36 km away
  4. 1.51 km WNW of Freeland, Washington · 17736 days ago · 50 km deep · 8 km away
  5. 1.67 km NNE of May Creek, Washington · 17738 days ago · 9 km deep · 73 km away
  6. 2.10 km NNW of Woodway, Washington · 17739 days ago · 11 km deep · 35 km away
  7. 2.1Puget Sound region, Washington · 17739 days ago · 19 km deep · 67 km away
  8. 1.63 km NNE of Hobart, Washington · 17741 days ago · 0 km deep · 85 km away
  9. 2.24 km SSW of La Conner, Washington · 17754 days ago · 17 km deep · 30 km away
  10. 1.78 km S of Swede Heaven, Washington · 17755 days ago · 8 km deep · 65 km away
  11. 3.127 km W of Quilcene, Washington · 17756 days ago · 41 km deep · 58 km away
  12. 2.08 km WNW of Gorst, Washington · 17757 days ago · 21 km deep · 61 km away
  13. 1.95 km SE of Klahanie, Washington · 17760 days ago · 19 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10846063. Read Tue, Sep 22, 2026, 8:17 AM UTC.