Washington earthquakes

M1.8 earthquake 11 km ENE of Snoqualmie, Washington

A magnitude 1.8 earthquake struck 11 km ENE of Snoqualmie, Washington on Mon, Feb 23, 1976, 9:05 PM PST (05:05 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.3 4 km WNW of Wauna, 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.

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The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1976-02-24 05:05:00 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
47.581° N, 121.698° 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 2.9 km horizontally, 2.5 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
190°, 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: 17 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.83 km SW of Lake Forest Park, Washington · 18480 days ago · 22 km deep · 49 km away
  2. 1.7Washington · 18479 days ago · 13 km deep · 86 km away
  3. 1.813 km NNE of Snoqualmie, Washington · 18476 days ago · 11 km deep · 6 km away
  4. 1.52 km SSE of Erlands Point-Kitsap Lake, Washington · 18474 days ago · 18 km deep · 75 km away
  5. 2.06 km W of Easton, Washington · 18470 days ago · 14 km deep · 50 km away
  6. 1.50 km NE of Lynnwood, Washington · 18463 days ago · 18 km deep · 53 km away
  7. 1.516 km NE of Snoqualmie, Washington · 18461 days ago · 9 km deep · 7 km away
  8. 1.89 km NE of Ashford, Washington · 18458 days ago · 6 km deep · 87 km away
  9. 1.622 km NE of Ashford, Washington · 18457 days ago · 20 km deep · 76 km away
  10. 1.61 km ENE of Everett, Washington · 18447 days ago · 21 km deep · 57 km away
  11. 1.50 km SSW of Lynnwood, Washington · 18446 days ago · 4 km deep · 53 km away
  12. 2.34 km WNW of Wauna, Washington · 18444 days ago · 9 km deep · 78 km away
  13. 1.85 km WNW of Wauna, Washington · 18440 days ago · 21 km deep · 79 km away
  14. 1.615 km S of Leavenworth, Washington · 18439 days ago · 5 km deep · 77 km away
  15. 1.62 km NE of Carnation, Washington · 18438 days ago · 9 km deep · 17 km away
  16. 1.67 km WSW of Camano, Washington · 18434 days ago · 28 km deep · 94 km away
  17. 1.821 km NE of Packwood, Washington · 18429 days ago · 5 km deep · 94 km away

Before

  1. 2.53 km W of Monroe, Washington · 18486 days ago · 24 km deep · 39 km away
  2. 2.14 km NNE of Covington, Washington · 18496 days ago · 18 km deep · 37 km away
  3. 1.56 km W of DuPont, Washington · 18498 days ago · 51 km deep · 93 km away
  4. 1.52 km W of Fall City, Washington · 18499 days ago · 16 km deep · 17 km away
  5. 3.52 km E of Conway, Washington · 18508 days ago · 15 km deep · 96 km away
  6. 1.85 km SW of Lake Cavanaugh, Washington · 18508 days ago · 13 km deep · 84 km away
  7. 1.76 km SE of Port Ludlow, Washington · 18509 days ago · 14 km deep · 77 km away
  8. 1.65 km WSW of Home, Washington · 18510 days ago · 16 km deep · 92 km away
  9. 1.71 km SW of Union Hill-Novelty Hill, Washington · 18511 days ago · 8 km deep · 28 km away
  10. 2.91 km NNE of Silver Firs, Washington · 18512 days ago · 14 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10840758. Read Sat, Oct 3, 2026, 4:15 AM UTC.