Washington earthquakes

M1.7 earthquake 9 km S of Marietta, Washington

A magnitude 1.7 earthquake struck 9 km S of Marietta, Washington on Sat, Aug 27, 1977, 7:03 AM PDT (14:03 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M2.2 7 km W of Coupeville, Washington. This one was a foreshock.

Marietta 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
1977-08-27 14:03:58 UTC
Depth
22.0 km (13.7 mi), shallow
Epicenter
48.702° N, 122.603° 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 3.1 km horizontally, 3.1 km in depth
Depth from
From location
Station coverage gap
178°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.27 km W of Coupeville, Washington · 17904 days ago · 18 km deep · 57 km away
  2. 1.96 km E of Arlington Heights, Washington · 17895 days ago · 18 km deep · 73 km away
  3. 3.06 km SW of Lyman, Washington · 17894 days ago · 6 km deep · 42 km away
  4. 1.82 km S of Edison, Washington · 17893 days ago · 17 km deep · 22 km away
  5. 1.65 km NNE of Oak Bay, Canada · 17889 days ago · 18 km deep · 54 km away
  6. 1.56 km SSW of Hansville, Washington · 17888 days ago · 15 km deep · 93 km away
  7. 2.010 km SSW of Bellingham, WA · 17884 days ago · 0 km deep · 7 km away
  8. 1.76 km N of Anacortes, Washington · 17883 days ago · 18 km deep · 14 km away
  9. 2.719 km W of Tsawwassen, Canada · 17876 days ago · 21 km deep · 66 km away
  10. 3.36 km E of Sedro-Woolley, Washington · 17875 days ago · 4 km deep · 40 km away
  11. 3.215 km S of Sooke, Canada · 17874 days ago · 46 km deep · 100 km away
  12. 2.42 km NNE of Coupeville, Washington · 17867 days ago · 22 km deep · 52 km away

Before

  1. 2.36 km SE of Marrowstone, Washington · 17929 days ago · 21 km deep · 77 km away
  2. 2.05 km SW of Bellingham, Washington · 17930 days ago · 15 km deep · 5 km away
  3. 2.05 km N of Arlington Heights, Washington · 17931 days ago · 0 km deep · 64 km away
  4. 1.55 km NNW of Port Townsend, Washington · 17940 days ago · 20 km deep · 62 km away
  5. 1.74 km NE of Kingston, Washington · 17942 days ago · 18 km deep · 97 km away
  6. 1.51 km NNE of Lynnwood, Washington · 17945 days ago · 2 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10844528. Read Tue, Sep 22, 2026, 10:02 AM UTC.