M1.6 earthquake 2 km S of Hartline, Washington
A magnitude 1.6 earthquake struck 2 km S of Hartline, Washington on Tue, Apr 20, 1982, 3:59 PM PST (23:59 UTC), 21 km (13 mi) below the surface.
A larger quake followed: M1.8 11 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
- 1.6 (md), micro
- Local time
- UTC
- 1982-04-20 23:59:32 UTC
- Depth
- 20.7 km (12.9 mi), shallow
- Epicenter
- 47.666° N, 119.106° 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.
- Depth from
- From location
- Station coverage gap
- 270°, poorly surrounded by stations
- Stations used
- 4
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 1.65 km NW of Waterville, Washington · 16219 days ago · 0 km deep · 76 km away
- 1.524 km NW of Soap Lake, Washington · 16208 days ago · 10 km deep · 49 km away
- 1.811 km WNW of Entiat, Washington · 16203 days ago · 3 km deep · 94 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10129818. Read Tue, Sep 22, 2026, 5:15 AM UTC.