M1.7 earthquake 9 km NNE of Entiat, Washington
A magnitude 1.7 earthquake struck 9 km NNE of Entiat, Washington on Mon, Apr 6, 1981, 10:20 AM PST (18:20 UTC), 3 km (2 mi) below the surface.
A larger quake followed: M1.8 4 km NNE of Chelan, 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
- 1981-04-06 18:20:36 UTC
- Depth
- 3.3 km (2.1 mi), shallow
- Epicenter
- 47.755° N, 120.182° 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, 2.3 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 137°
- 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: 5 in the 60 days after this one and 4 in the 30 days before it.
After
- 1.517 km WSW of Electric City, Washington · 16594 days ago · 0 km deep · 70 km away
- 1.84 km NNE of Chelan, Washington · 16589 days ago · 9 km deep · 19 km away
- 1.99 km NE of East Wenatchee Bench, Washington · 16586 days ago · 0 km deep · 29 km away
- 2.66 km WSW of Entiat, Washington · 16555 days ago · 2 km deep · 13 km away
- 2.512 km ESE of Waterville, Washington · 16552 days ago · 0 km deep · 26 km away
Before
- 2.79 km W of Entiat, Washington · 16610 days ago · 0 km deep · 15 km away
- 1.88 km WSW of George, Washington · 16618 days ago · 0 km deep · 82 km away
- 1.78 km WSW of George, Washington · 16625 days ago · 0 km deep · 81 km away
- 2.67 km NE of Snoqualmie Pass, Washington · 16631 days ago · 7 km deep · 93 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10099728. Read Tue, Sep 22, 2026, 9:31 AM UTC.