Washington earthquakes

M1.6 earthquake 9 km NNE of Snoqualmie, Washington

A magnitude 1.6 earthquake struck 9 km NNE of Snoqualmie, Washington on Thu, Mar 1, 1979, 11:06 AM PST (19:06 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.8 6 km WSW of Coupeville, 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
1.6 (md), micro
Local time
UTC
1979-03-01 19:06:34 UTC
Depth
7.0 km (4.3 mi), shallow
Epicenter
47.603° N, 121.768° 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 0.1 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
163°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.63 km SW of Wilderness Rim, Washington · 17369 days ago · 17 km deep · 20 km away
  2. 1.54 km NW of Chico, Washington · 17366 days ago · 23 km deep · 74 km away
  3. 3.86 km WSW of Coupeville, Washington · 17361 days ago · 23 km deep · 100 km away
  4. 2.52 km W of Boulevard Park, Washington · 17359 days ago · 24 km deep · 45 km away
  5. 1.62 km E of Mukilteo, Washington · 17342 days ago · 15 km deep · 53 km away
  6. 1.717 km ENE of Leavenworth, Washington · 17341 days ago · 0 km deep · 98 km away
  7. 1.82 km NE of Hansville, Washington · 17336 days ago · 51 km deep · 68 km away
  8. 1.5Washington · 17334 days ago · 21 km deep · 11 km away
  9. 1.74 km NNE of Snoqualmie, Washington · 17333 days ago · 17 km deep · 5 km away
  10. 1.56 km NE of Fall City, Washington · 17327 days ago · 18 km deep · 3 km away
  11. 1.6Washington · 17323 days ago · 2 km deep · 83 km away
  12. 1.55 km SW of Coupeville, Washington · 17322 days ago · 16 km deep · 98 km away
  13. 1.94 km SSW of Hansville, Washington · 17322 days ago · 9 km deep · 68 km away
  14. 2.018 km ESE of Carbonado, Washington · 17316 days ago · 13 km deep · 68 km away

Before

  1. 1.846 km WNW of Granite Falls, Washington · 17383 days ago · 0 km deep · 95 km away
  2. 1.73 km S of Fall City, Washington · 17389 days ago · 8 km deep · 12 km away
  3. 1.51 km ENE of Silver Firs, Washington · 17389 days ago · 14 km deep · 40 km away
  4. 2.26 km ESE of Maplewood, Washington · 17390 days ago · 8 km deep · 59 km away
  5. 1.85 km SW of Wilderness Rim, Washington · 17392 days ago · 16 km deep · 21 km away
  6. 1.64 km ENE of Ashford, Washington · 17392 days ago · 10 km deep · 94 km away
  7. 1.517 km WSW of Easton, Washington · 17398 days ago · 3 km deep · 56 km away
  8. 1.64 km SSW of Fall City, Washington · 17399 days ago · 5 km deep · 13 km away
  9. 3.54 km SSW of Fall City, Washington · 17400 days ago · 7 km deep · 13 km away
  10. 1.91 km WNW of Artondale, Washington · 17400 days ago · 16 km deep · 73 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10849083. Read Tue, Sep 22, 2026, 8:22 AM UTC.