Washington earthquakes

M1.6 earthquake 8 km WNW of Gorst, Washington

A magnitude 1.6 earthquake struck 8 km WNW of Gorst, Washington on Fri, Apr 23, 1971, 5:49 PM PST (01:49 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M2.1 6 km NNE of Snoqualmie, 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
1.6 (md), micro
Local time
UTC
1971-04-24 01:49:46 UTC
Depth
14.3 km (8.9 mi), shallow
Epicenter
47.547° N, 122.808° 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 0.4 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
145°
Stations used
4

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 5 in the 30 days before it.

After

  1. 2.16 km NNE of Snoqualmie, Washington · 20236 days ago · 12 km deep · 76 km away
  2. 2.02 km SW of Cottage Lake, Washington · 20228 days ago · 19 km deep · 57 km away
  3. 2.84 km NE of Duvall, Washington · 20224 days ago · 19 km deep · 69 km away
  4. 2.20 km W of Bryn Mawr-Skyway, Washington · 20220 days ago · 24 km deep · 42 km away
  5. 2.40 km NE of Lakeland South, Washington · 20198 days ago · 18 km deep · 50 km away
  6. 1.911 km NNW of Belfair, Washington · 20198 days ago · 20 km deep · 7 km away
  7. 2.12 km ESE of Riverbend, Washington · 20195 days ago · 5 km deep · 83 km away
  8. 1.92 km ESE of Riverbend, Washington · 20195 days ago · 5 km deep · 83 km away
  9. 2.77 km SW of Alder, Washington · 20191 days ago · 2 km deep · 94 km away
  10. 2.117 km SSW of Greenwater, Washington · 20191 days ago · 21 km deep · 97 km away
  11. 2.44 km NW of Coupeville, Washington · 20190 days ago · 22 km deep · 78 km away
  12. 1.87 km WNW of Allyn, Washington · 20181 days ago · 19 km deep · 17 km away

Before

  1. 2.01 km WNW of Burien, Washington · 20252 days ago · 26 km deep · 35 km away
  2. 2.10 km SSW of Woodinville, Washington · 20257 days ago · 21 km deep · 53 km away
  3. 3.27 km SSW of Brinnon, Washington · 20262 days ago · 14 km deep · 12 km away
  4. 2.70 km WNW of Burley, Washington · 20265 days ago · 41 km deep · 19 km away
  5. 1.812 km ENE of Enumclaw, Washington · 20271 days ago · 22 km deep · 82 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10838938. Read Tue, Sep 22, 2026, 4:21 PM UTC.