Washington earthquakes

M1.5 earthquake 4 km NW of Wauna, Washington

A magnitude 1.5 earthquake struck 4 km NW of Wauna, Washington on Thu, Feb 27, 1975, 9:37 AM PDT (16:37 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M1.9 13 km W of Quilcene, 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
1.5 (md), micro
Local time
UTC
1975-02-27 16:37:21 UTC
Depth
22.8 km (14.2 mi), shallow
Epicenter
47.404° N, 122.684° 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 2.3 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
209°, poorly surrounded by stations
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: 15 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.913 km W of Quilcene, Washington · 18834 days ago · 27 km deep · 55 km away
  2. 2.05 km SW of Wilderness Rim, Washington · 18830 days ago · 19 km deep · 65 km away
  3. 1.918 km SSE of Carbonado, Washington · 18826 days ago · 6 km deep · 77 km away
  4. 2.18 km WSW of Lofall, Washington · 18822 days ago · 19 km deep · 44 km away
  5. 2.83 km NW of Black Diamond, Washington · 18815 days ago · 20 km deep · 50 km away
  6. 2.13 km NE of Dash Point, Washington · 18804 days ago · 14 km deep · 24 km away
  7. 1.88 km W of Longbranch, Washington · 18802 days ago · 8 km deep · 27 km away
  8. 2.22 km NNE of Riverton, Washington · 18802 days ago · 25 km deep · 33 km away
  9. 3.711 km SW of Greenwater, Washington · 18793 days ago · 6 km deep · 80 km away
  10. 2.817 km ESE of Carbonado, Washington · 18793 days ago · -1 km deep · 75 km away
  11. 2.327 km S of Greenwater, Washington · 18792 days ago · 1 km deep · 100 km away
  12. 2.128 km S of Greenwater, Washington · 18788 days ago · 2 km deep · 100 km away
  13. 4.010 km SSW of Seabeck, Washington · 18787 days ago · 40 km deep · 24 km away
  14. 3.927 km S of Greenwater, Washington · 18785 days ago · 4 km deep · 99 km away
  15. 4.22 km SW of DuPont, Washington · 18780 days ago · 45 km deep · 36 km away

Before

  1. 1.75 km NNE of Vaughn, Washington · 18842 days ago · 22 km deep · 5 km away
  2. 2.01 km WSW of Mirrormont, Washington · 18857 days ago · 14 km deep · 51 km away
  3. 1.81 km WNW of Snoqualmie, Washington · 18858 days ago · 15 km deep · 65 km away
  4. 1.92 km NW of Redmond, Washington · 18861 days ago · 7 km deep · 51 km away
  5. 2.210 km ENE of Ashford, Washington · 18862 days ago · 6 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10860473. Read Tue, Sep 22, 2026, 11:18 AM UTC.