M1.8 earthquake 24 km N of Winthrop, Washington
A magnitude 1.8 earthquake struck 24 km N of Winthrop, Washington on Wed, Sep 16, 1981, 11:21 PM PDT (06:21 UTC), 4 km (3 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (md), micro
- Local time
- UTC
- 1981-09-17 06:21:56 UTC
- Depth
- 4.4 km (2.7 mi), shallow
- Epicenter
- 48.695° N, 120.178° 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 2.8 km horizontally, 5.1 km in depth
- Magnitude uncertainty
- ±0.34
- Depth from
- From location
- Station coverage gap
- 230°, poorly surrounded by stations
- Stations used
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10118038. Read Tue, Sep 22, 2026, 11:32 PM UTC.