M1.5 earthquake 3 km NE of East Cathlamet, Washington
A magnitude 1.5 earthquake struck 3 km NE of East Cathlamet, Washington on Mon, Nov 23, 1981, 3:10 AM PST (11:10 UTC), 21 km (13 mi) below the surface.
A larger quake followed: M2.7 22 km S of Morton, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (md), micro
- Local time
- UTC
- 1981-11-23 11:10:21 UTC
- Depth
- 21.3 km (13.2 mi), shallow
- Epicenter
- 46.214° N, 123.331° 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, 0.8 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- From location
- Station coverage gap
- 146°
- Stations used
- 22
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.722 km S of Morton, Washington · 16366 days ago · 5 km deep · 85 km away
- 1.623 km S of Morton, Washington · 16350 days ago · 10 km deep · 85 km away
- 2.732 km S of Morton, Washington · 16349 days ago · 1 km deep · 87 km away
- 1.82 km ENE of Amboy, Washington · 16325 days ago · 12 km deep · 78 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10123668. Read Tue, Sep 22, 2026, 10:22 AM UTC.