M1.9 earthquake Washington
A magnitude 1.9 earthquake struck in Washington on Mon, Apr 23, 1979, 1:54 PM PST (21:54 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.4 6 km WNW of Entiat, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.9 (md), micro
- Local time
- UTC
- 1979-04-23 21:54:12 UTC
- Depth
- -0.5 km (-0.3 mi), shallow
- Epicenter
- 47.512° N, 120.201° 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 0.9 km horizontally, 0.6 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 201°, poorly surrounded by stations
- Stations used
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 6 in the 30 days before it.
After
- 1.6Washington · 17311 days ago · 6 km deep · 20 km away
- 1.78 km NNE of Waterville, Washington · 17303 days ago · 5 km deep · 26 km away
- 2.46 km WNW of Entiat, Washington · 17294 days ago · 7 km deep · 23 km away
- 2.315 km NNW of Cliffdell, Washington · 17286 days ago · 4 km deep · 89 km away
- 1.840 km NE of Skykomish, Washington · 17271 days ago · 9 km deep · 76 km away
Before
- 1.810 km NNW of Mansfield, Washington · 17322 days ago · 3 km deep · 58 km away
- 1.73 km ESE of Kittitas, Washington · 17327 days ago · 19 km deep · 61 km away
- 2.09 km NNW of Mansfield, Washington · 17329 days ago · 5 km deep · 57 km away
- 2.5Washington · 17336 days ago · 16 km deep · 61 km away
- 3.0Washington · 17336 days ago · 16 km deep · 62 km away
- 1.717 km ENE of Leavenworth, Washington · 17342 days ago · 0 km deep · 27 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10849588. Read Wed, Sep 23, 2026, 4:18 AM UTC.