Washington earthquakes

M1.8 earthquake 1 km WNW of Snoqualmie, Washington

A magnitude 1.8 earthquake struck 1 km WNW of Snoqualmie, Washington on Tue, Feb 4, 1975, 11:06 AM PST (19:06 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M2.0 1 km WSW of Mirrormont, Washington. This one was a foreshock.

Snoqualmie forecastMore in Washington

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.8 (md), micro
Local time
UTC
1975-02-04 19:06:54 UTC
Depth
14.8 km (9.2 mi), shallow
Epicenter
47.538° N, 121.847° 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 0.7 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
178°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.01 km WSW of Mirrormont, Washington · 18857 days ago · 14 km deep · 15 km away
  2. 1.75 km NNE of Vaughn, Washington · 18842 days ago · 22 km deep · 69 km away
  3. 1.54 km NW of Wauna, Washington · 18835 days ago · 23 km deep · 65 km away
  4. 1.913 km W of Quilcene, Washington · 18834 days ago · 27 km deep · 96 km away
  5. 2.05 km SW of Wilderness Rim, Washington · 18830 days ago · 19 km deep · 15 km away
  6. 1.918 km SSE of Carbonado, Washington · 18826 days ago · 6 km deep · 68 km away
  7. 2.18 km WSW of Lofall, Washington · 18822 days ago · 19 km deep · 75 km away
  8. 2.83 km NW of Black Diamond, Washington · 18815 days ago · 20 km deep · 26 km away
  9. 2.13 km NE of Dash Point, Washington · 18804 days ago · 14 km deep · 46 km away
  10. 1.88 km W of Longbranch, Washington · 18802 days ago · 8 km deep · 86 km away
  11. 2.22 km NNE of Riverton, Washington · 18802 days ago · 25 km deep · 33 km away

Before

  1. 1.92 km NW of Redmond, Washington · 18861 days ago · 7 km deep · 28 km away
  2. 2.210 km ENE of Ashford, Washington · 18862 days ago · 6 km deep · 83 km away
  3. 2.13 km S of Issaquah, Washington · 18871 days ago · 15 km deep · 15 km away
  4. 2.60 km N of Riverton, Washington · 18873 days ago · 24 km deep · 34 km away
  5. 2.313 km SE of Skykomish, Washington · 18874 days ago · 15 km deep · 46 km away
  6. 2.01 km N of Riverton, Washington · 18886 days ago · 21 km deep · 34 km away
  7. 2.52 km SW of Kenmore, Washington · 18887 days ago · 15 km deep · 38 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10860418. Read Tue, Sep 22, 2026, 11:18 AM UTC.