M1.6 earthquake Washington
A magnitude 1.6 earthquake struck in Washington on Wed, Apr 18, 1979, 9:22 PM PST (05:22 UTC), 2 km (1 mi) below the surface.
A larger quake followed: M2.0 18 km ESE of Carbonado, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (md), micro
- Local time
- UTC
- 1979-04-19 05:22:49 UTC
- Depth
- 2.2 km (1.4 mi), shallow
- Epicenter
- 46.858° N, 121.746° 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 0.4 km horizontally, 0.5 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 168°
- Stations used
- 10
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 4 in the 30 days before it.
After
- 2.018 km ESE of Carbonado, Washington · 17316 days ago · 13 km deep · 17 km away
- 1.55 km W of Burley, Washington · 17311 days ago · 23 km deep · 96 km away
- 1.84 km SSW of Des Moines, Washington · 17310 days ago · 10 km deep · 72 km away
- 2.216 km N of Mossyrock, Washington · 17291 days ago · 8 km deep · 59 km away
- 1.717 km N of Mossyrock, Washington · 17287 days ago · -1 km deep · 59 km away
- 1.632 km S of Morton, Washington · 17287 days ago · 10 km deep · 78 km away
- 2.315 km NNW of Cliffdell, Washington · 17285 days ago · 4 km deep · 48 km away
- 2.42 km W of Fox Island, Washington · 17265 days ago · 23 km deep · 82 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10849558. Read Tue, Sep 22, 2026, 5:44 PM UTC.