M1.5 earthquake Washington
A magnitude 1.5 earthquake struck in Washington on Sun, Apr 8, 1979, 2:35 AM PST (10:35 UTC), 21 km (13 mi) below the surface.
A larger quake followed: M1.7 4 km NNE of Snoqualmie, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (md), micro
- Local time
- UTC
- 1979-04-08 10:35:48 UTC
- Depth
- 20.5 km (12.7 mi), shallow
- Epicenter
- 47.541° N, 121.661° 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 1.1 km horizontally, 1.7 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 174°
- 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: 9 in the 60 days after this one and 5 in the 30 days before it.
After
- 1.74 km NNE of Snoqualmie, Washington · 17334 days ago · 17 km deep · 10 km away
- 1.56 km NE of Fall City, Washington · 17327 days ago · 18 km deep · 13 km away
- 1.6Washington · 17323 days ago · 2 km deep · 76 km away
- 1.94 km SSW of Hansville, Washington · 17322 days ago · 9 km deep · 78 km away
- 2.018 km ESE of Carbonado, Washington · 17316 days ago · 13 km deep · 63 km away
- 1.55 km W of Burley, Washington · 17311 days ago · 23 km deep · 80 km away
- 1.84 km SSW of Des Moines, Washington · 17309 days ago · 10 km deep · 55 km away
- 2.315 km NNW of Cliffdell, Washington · 17285 days ago · 4 km deep · 64 km away
- 1.74 km ENE of Verlot, Washington · 17281 days ago · 14 km deep · 63 km away
Before
- 1.82 km NE of Hansville, Washington · 17336 days ago · 51 km deep · 78 km away
- 1.717 km ENE of Leavenworth, Washington · 17341 days ago · 0 km deep · 91 km away
- 1.62 km E of Mukilteo, Washington · 17343 days ago · 15 km deep · 63 km away
- 1.815 km W of Entiat, Washington · 17357 days ago · -1 km deep · 95 km away
- 2.52 km W of Boulevard Park, Washington · 17359 days ago · 24 km deep · 51 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10849473. Read Tue, Sep 22, 2026, 11:33 AM UTC.