M2.3 earthquake Washington
A magnitude 2.3 earthquake struck in Washington on Fri, Oct 18, 1985, 4:44 PM PDT (23:44 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.5 15 km ENE of Princeton, Idaho. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.3 (md), micro
- Local time
- UTC
- 1985-10-18 23:44:05 UTC
- Depth
- -0.5 km (-0.3 mi), shallow
- Epicenter
- 46.852° N, 117.158° 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 1.8 km horizontally, 7.2 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- Operator assigned
- Station coverage gap
- 253°, poorly surrounded by stations
- Stations used
- 8
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10200638. Read Tue, Sep 22, 2026, 3:50 AM UTC.