M1.8 earthquake 10 km SW of Royal City, Washington
A magnitude 1.8 earthquake struck 10 km SW of Royal City, Washington on Tue, Nov 10, 1981, 8:33 PM PST (04:33 UTC), 2 km (1 mi) below the surface.
A larger quake followed: M2.7 18 km NNE of Thorp, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (md), micro
- Local time
- UTC
- 1981-11-11 04:33:15 UTC
- Depth
- 2.3 km (1.4 mi), shallow
- Epicenter
- 46.840° N, 119.729° 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 0.7 km horizontally, 0.9 km in depth
- Magnitude uncertainty
- ±0.47
- Depth from
- From location
- Station coverage gap
- 62°
- Stations used
- 21
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
- 1.86 km N of Waterville, Washington · 16386 days ago · 0 km deep · 100 km away
- 1.610 km SW of Royal City, Washington · 16383 days ago · 1 km deep · 0 km away
- 1.63 km NNE of Waterville, Washington · 16366 days ago · 7 km deep · 96 km away
- 2.718 km NNE of Thorp, Washington · 16332 days ago · 0 km deep · 80 km away
- 1.913 km ENE of Royal City, Washington · 16332 days ago · 2 km deep · 23 km away
Before
- 2.11 km SW of Kittitas, Washington · 16399 days ago · 8 km deep · 55 km away
- 1.64 km SE of Royal City, Washington · 16407 days ago · 0 km deep · 11 km away
- 2.32 km SW of Kittitas, Washington · 16413 days ago · 8 km deep · 56 km away
- 1.922 km NW of Bickleton, Washington · 16416 days ago · 12 km deep · 96 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10122178. Read Tue, Sep 22, 2026, 12:17 PM UTC.