Washington earthquakes

M2.5 earthquake 6 km S of Vashon, Washington

A magnitude 2.5 earthquake struck 6 km S of Vashon, Washington on Wed, Jun 27, 1979, 1:54 AM PDT (08:54 UTC), 48 km (30 mi) below the surface.

A larger quake followed: M2.7 6 km N of Jamestown, Washington. This one was a foreshock.

Vashon 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
2.5 (md), micro
Local time
UTC
1979-06-27 08:54:11 UTC
Depth
48.4 km (30.1 mi), shallow
Epicenter
47.385° N, 122.461° 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 0.5 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
42°
Stations used
18

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 3 in the 30 days before it.

After

  1. 1.51 km NNW of Lofall, Washington · 17256 days ago · 20 km deep · 52 km away
  2. 1.53 km ENE of Carlsborg, Washington · 17254 days ago · 47 km deep · 95 km away
  3. 2.36 km W of Burley, Washington · 17248 days ago · 23 km deep · 19 km away
  4. 1.610 km NE of Hoodsport, Washington · 17245 days ago · -1 km deep · 46 km away
  5. 1.90 km SE of Union Hill-Novelty Hill, Washington · 17240 days ago · 18 km deep · 46 km away
  6. 1.53 km N of Union Hill-Novelty Hill, Washington · 17230 days ago · 21 km deep · 49 km away
  7. 2.33 km WSW of Snohomish, Washington · 17228 days ago · 23 km deep · 62 km away
  8. 1.83 km ENE of Eastmont, Washington · 17228 days ago · 23 km deep · 63 km away
  9. 1.99 km ENE of Tanner, Washington · 17225 days ago · 9 km deep · 64 km away
  10. 1.77 km E of Carnation, Washington · 17219 days ago · 11 km deep · 58 km away
  11. 1.5Washington · 17219 days ago · 13 km deep · 87 km away
  12. 2.76 km N of Jamestown, Washington · 17213 days ago · 50 km deep · 100 km away

Before

  1. 1.73 km W of Covington, Washington · 17266 days ago · 1 km deep · 22 km away
  2. 2.42 km W of Fox Island, Washington · 17273 days ago · 23 km deep · 21 km away
  3. 1.74 km ENE of Verlot, Washington · 17289 days ago · 14 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10850078. Read Wed, Sep 30, 2026, 6:03 AM UTC.