Washington earthquakes

M1.6 earthquake 4 km SE of Three Lakes, Washington

A magnitude 1.6 earthquake struck 4 km SE of Three Lakes, Washington on Tue, Jul 4, 1978, 11:10 PM PDT (06:10 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M1.9 3 km E of Port Townsend, Washington. This one was a foreshock.

Three Lakes 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
1978-07-05 06:10:38 UTC
Depth
14.6 km (9.1 mi), shallow
Epicenter
47.921° N, 121.971° 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 0.9 km horizontally, 1.5 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
127°
Stations used
12

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. 1.53 km E of Alger, Washington · 17602 days ago · 18 km deep · 82 km away
  2. 1.93 km E of Port Townsend, Washington · 17593 days ago · 23 km deep · 60 km away
  3. 1.54 km SW of Hansville, Washington · 17587 days ago · 12 km deep · 47 km away
  4. 1.50 km WSW of North Bend, Washington · 17583 days ago · 19 km deep · 49 km away
  5. 1.76 km WSW of Darrington, Washington · 17578 days ago · 9 km deep · 41 km away
  6. 1.65 km W of Burley, Washington · 17574 days ago · 22 km deep · 78 km away
  7. 1.73 km NE of Southworth, Washington · 17572 days ago · 14 km deep · 57 km away
  8. 2.310 km S of Baring, Washington · 17568 days ago · 11 km deep · 44 km away
  9. 1.923 km N of Marblemount, Washington · 17559 days ago · 1 km deep · 98 km away
  10. 3.27 km SW of Brinnon, Washington · 17558 days ago · 46 km deep · 81 km away
  11. 1.66 km NNE of Hoodsport, Washington · 17555 days ago · 2 km deep · 100 km away
  12. 2.16 km N of Kingston, Washington · 17551 days ago · 14 km deep · 40 km away

Before

  1. 3.3Puget Sound region, Washington · 17626 days ago · 46 km deep · 69 km away
  2. 2.24 km N of La Conner, Washington · 17629 days ago · 24 km deep · 68 km away
  3. 1.58 km SSW of Gold Bar, Washington · 17636 days ago · 3 km deep · 22 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10847373. Read Tue, Sep 22, 2026, 3:07 PM UTC.