M1.7 earthquake 4 km NNE of Snoqualmie, Washington
A magnitude 1.7 earthquake struck 4 km NNE of Snoqualmie, Washington on Sun, Apr 8, 1979, 2:07 PM PST (22:07 UTC), 17 km (11 mi) below the surface.
A larger quake followed: M1.9 4 km SSW of Hansville, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (md), micro
- Local time
- UTC
- 1979-04-08 22:07:03 UTC
- Depth
- 17.2 km (10.7 mi), shallow
- Epicenter
- 47.564° N, 121.792° W
- Region
- Washington
- 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 0.5 km horizontally, 0.8 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 160°
- Stations used
- 16
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 4 in the 30 days before it.
After
- 1.56 km NE of Fall City, Washington · 17328 days ago · 18 km deep · 5 km away
- 1.6Washington · 17324 days ago · 2 km deep · 79 km away
- 1.55 km SW of Coupeville, Washington · 17323 days ago · 16 km deep · 99 km away
- 1.94 km SSW of Hansville, Washington · 17323 days ago · 9 km deep · 68 km away
- 2.018 km ESE of Carbonado, Washington · 17316 days ago · 13 km deep · 64 km away
- 1.55 km W of Burley, Washington · 17311 days ago · 23 km deep · 71 km away
- 1.84 km SSW of Des Moines, Washington · 17310 days ago · 10 km deep · 47 km away
- 2.315 km NNW of Cliffdell, Washington · 17286 days ago · 4 km deep · 72 km away
- 1.74 km ENE of Verlot, Washington · 17282 days ago · 14 km deep · 60 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10849478. Read Tue, Sep 22, 2026, 9:40 PM UTC.