Washington earthquakes

M1.8 earthquake 2 km S of Edison, Washington

A magnitude 1.8 earthquake struck 2 km S of Edison, Washington on Sun, Sep 25, 1977, 11:59 PM PDT (06:59 UTC), 17 km (10 mi) below the surface.

A larger quake followed: M3.3 6 km E of Sedro-Woolley, 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
1.8 (md), micro
Local time
UTC
1977-09-26 06:59:14 UTC
Depth
16.9 km (10.5 mi), shallow
Epicenter
48.538° N, 122.442° 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 1.0 km horizontally, 1.9 km in depth
Depth from
From location
Station coverage gap
117°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 1.65 km NNE of Oak Bay, Canada · 17891 days ago · 18 km deep · 61 km away
  2. 1.56 km SSW of Hansville, Washington · 17890 days ago · 15 km deep · 76 km away
  3. 2.010 km SSW of Bellingham, WA · 17887 days ago · 0 km deep · 16 km away
  4. 1.76 km N of Anacortes, Washington · 17885 days ago · 18 km deep · 13 km away
  5. 1.63 km NW of Suquamish, Washington · 17883 days ago · 21 km deep · 88 km away
  6. 1.54 km E of Echo Lake, Washington · 17882 days ago · 19 km deep · 90 km away
  7. 2.719 km W of Tsawwassen, Canada · 17878 days ago · 21 km deep · 86 km away
  8. 3.36 km E of Sedro-Woolley, Washington · 17878 days ago · 4 km deep · 22 km away
  9. 2.42 km NNE of Coupeville, Washington · 17869 days ago · 22 km deep · 38 km away
  10. 1.55 km N of Victoria, Canada · 17864 days ago · 51 km deep · 68 km away
  11. 2.18 km NE of Duvall, Washington · 17863 days ago · 16 km deep · 92 km away
  12. 1.61 km N of Esperance, Washington · 17854 days ago · 6 km deep · 83 km away
  13. 1.92 km SSE of Three Lakes, Washington · 17848 days ago · 8 km deep · 75 km away
  14. 2.32 km WNW of La Conner, Washington · 17847 days ago · 22 km deep · 17 km away

Before

  1. 3.06 km SW of Lyman, Washington · 17896 days ago · 6 km deep · 23 km away
  2. 1.96 km E of Arlington Heights, Washington · 17897 days ago · 18 km deep · 52 km away
  3. 2.27 km W of Coupeville, Washington · 17907 days ago · 18 km deep · 45 km away
  4. 1.79 km S of Marietta, Washington · 17925 days ago · 22 km deep · 22 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10844768. Read Thu, Sep 24, 2026, 3:18 PM UTC.