Washington earthquakes

M2.4 earthquake 9 km W of Gorst, Washington

A magnitude 2.4 earthquake struck 9 km W of Gorst, Washington on Thu, Jun 18, 1987, 3:15 AM PDT (10:15 UTC), 18 km (11 mi) below the surface.

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

Gorst 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
2.4 (md), micro
Local time
UTC
1987-06-18 10:15:59 UTC
Depth
18.4 km (11.4 mi), shallow
Epicenter
47.538° N, 122.826° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
42°
Stations used
34

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.32 km W of Wilderness Rim, Washington · 14339 days ago · 21 km deep · 77 km away
  2. 2.72 km E of Edmonds, Washington · 14334 days ago · 15 km deep · 47 km away
  3. 1.911 km SSW of Port Hadlock-Irondale, Washington · 14332 days ago · 50 km deep · 45 km away
  4. 2.48 km W of Port Townsend, Washington · 14331 days ago · 45 km deep · 63 km away
  5. 1.58 km ENE of Hoodsport, Washington · 14330 days ago · 13 km deep · 20 km away
  6. 1.92 km WNW of City of Sammamish, Washington · 14327 days ago · 0 km deep · 58 km away
  7. 2.45 km ESE of Oak Harbor, Washington · 14325 days ago · 25 km deep · 85 km away
  8. 2.711 km ENE of Hoodsport, Washington · 14305 days ago · 15 km deep · 17 km away
  9. 1.85 km NE of Tanner, Washington · 14299 days ago · 13 km deep · 85 km away
  10. 1.61 km ESE of Lake Marcel-Stillwater, Washington · 14294 days ago · 0 km deep · 71 km away
  11. 1.55 km NNE of Duvall, Washington · 14294 days ago · 23 km deep · 71 km away
  12. 2.71 km N of Port Townsend, Washington · 14293 days ago · 22 km deep · 66 km away
  13. 1.87 km WNW of Gorst, Washington · 14289 days ago · 11 km deep · 4 km away

Before

  1. 2.06 km NE of Duvall, Washington · 14344 days ago · 20 km deep · 72 km away
  2. 2.03 km NNW of Ravensdale, Washington · 14352 days ago · 6 km deep · 65 km away
  3. 1.76 km W of Burley, Washington · 14359 days ago · 23 km deep · 15 km away
  4. 2.13 km SSW of Clinton, Washington · 14359 days ago · 28 km deep · 57 km away
  5. 1.54 km W of Chico, Washington · 14361 days ago · 21 km deep · 9 km away
  6. 2.019 km SSE of Friday Harbor, Washington · 14367 days ago · 14 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10220823. Read Wed, Sep 23, 2026, 5:05 PM UTC.