M1.6 earthquake 2 km W of Silverton, Oregon
A magnitude 1.6 earthquake struck 2 km W of Silverton, Oregon on Mon, Dec 22, 1986, 5:37 AM PST (13:37 UTC), 28 km (17 mi) below the surface.
A larger quake followed: M2.2 4 km SSE of Sandy, Oregon. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (md), micro
- Local time
- UTC
- 1986-12-22 13:37:33 UTC
- Depth
- 27.6 km (17.2 mi), shallow
- Epicenter
- 45.006° N, 122.810° 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 2.0 km horizontally, 1.1 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 213°, poorly surrounded by stations
- Stations used
- 18
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 2 in the 30 days before it.
After
- 2.24 km SSE of Sandy, Oregon · 14519 days ago · 19 km deep · 59 km away
- 1.85 km WSW of North Bonneville, Washington · 14470 days ago · 3 km deep · 91 km away
- 1.66 km ESE of Hockinson, Washington · 14465 days ago · 8 km deep · 84 km away
Before
Earthquakes todayOregon earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10216593. Read Tue, Sep 22, 2026, 9:17 PM UTC.