Washington earthquakes

M1.7 earthquake 6 km N of Anacortes, Washington

A magnitude 1.7 earthquake struck 6 km N of Anacortes, Washington on Thu, Oct 6, 1977, 8:03 AM PDT (15:03 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.7 19 km W of Tsawwassen, Canada. This one was a foreshock.

Anacortes 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
1977-10-06 15:03:03 UTC
Depth
18.0 km (11.2 mi), shallow
Epicenter
48.575° N, 122.616° 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 1.1 km horizontally, 1.7 km in depth
Depth from
From location
Station coverage gap
150°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.63 km NW of Suquamish, Washington · 17881 days ago · 21 km deep · 91 km away
  2. 1.54 km E of Echo Lake, Washington · 17879 days ago · 19 km deep · 99 km away
  3. 2.719 km W of Tsawwassen, Canada · 17876 days ago · 21 km deep · 74 km away
  4. 3.36 km E of Sedro-Woolley, Washington · 17875 days ago · 4 km deep · 35 km away
  5. 3.215 km S of Sooke, Canada · 17874 days ago · 46 km deep · 93 km away
  6. 2.42 km NNE of Coupeville, Washington · 17867 days ago · 22 km deep · 38 km away
  7. 1.55 km N of Victoria, Canada · 17862 days ago · 51 km deep · 56 km away
  8. 1.61 km N of Esperance, Washington · 17852 days ago · 6 km deep · 88 km away
  9. 1.92 km SSE of Three Lakes, Washington · 17846 days ago · 8 km deep · 85 km away
  10. 2.32 km WNW of La Conner, Washington · 17845 days ago · 22 km deep · 21 km away

Before

  1. 2.010 km SSW of Bellingham, WA · 17885 days ago · 0 km deep · 13 km away
  2. 1.56 km SSW of Hansville, Washington · 17888 days ago · 15 km deep · 79 km away
  3. 1.65 km NNE of Oak Bay, Canada · 17889 days ago · 18 km deep · 49 km away
  4. 1.82 km S of Edison, Washington · 17893 days ago · 17 km deep · 13 km away
  5. 3.06 km SW of Lyman, Washington · 17894 days ago · 6 km deep · 37 km away
  6. 1.96 km E of Arlington Heights, Washington · 17895 days ago · 18 km deep · 64 km away
  7. 2.27 km W of Coupeville, Washington · 17905 days ago · 18 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10844838. Read Tue, Sep 22, 2026, 12:17 PM UTC.