M2.6 earthquake 5 km ENE of Umapine, Oregon
A magnitude 2.6 earthquake struck 5 km ENE of Umapine, Oregon on Thu, Dec 26, 1985, 10:19 AM PST (18:19 UTC), 3 km (2 mi) below the surface.
A larger quake followed: M3.2 8 km ESE of Wallula, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.6 (md), micro
- Local time
- UTC
- 1985-12-26 18:19:23 UTC
- Depth
- 3.5 km (2.1 mi), shallow
- Epicenter
- 45.989° N, 118.427° W
- Region
- Oregon
- 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 1.3 km horizontally, 1.0 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 196°, poorly surrounded by stations
- Stations used
- 15
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 1 in the 30 days before it.
After
Before
Earthquakes todayOregon earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10200818. Read Tue, Sep 22, 2026, 8:36 PM UTC.