M1.8 earthquake 21 km WNW of Republic, Washington
A magnitude 1.8 earthquake struck 21 km WNW of Republic, Washington on Thu, Oct 10, 1985, 10:04 AM PDT (17:04 UTC), 8 km (5 mi) below the surface.
A larger quake followed: M2.1 12 km SE of Bridgeport, 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
- 1985-10-10 17:04:50 UTC
- Depth
- 8.4 km (5.2 mi), shallow
- Epicenter
- 48.717° N, 119.013° 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 1.9 km horizontally, 0.9 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 253°, poorly surrounded by stations
- Stations used
- 6
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 1 in the 30 days before it.
After
- 2.112 km SE of Bridgeport, Washington · 14956 days ago · 0 km deep · 98 km away
- 1.912 km NNE of Mansfield, Washington · 14931 days ago · 0 km deep · 99 km away
- 2.11 km ENE of Riverside, Washington · 14920 days ago · 11 km deep · 42 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10199508. Read Tue, Sep 22, 2026, 4:21 PM UTC.