M1.7 earthquake 34 km N of Amboy, WA
A magnitude 1.7 earthquake struck 34 km N of Amboy, WA on Wed, Dec 10, 1986, 9:10 PM PST (05:10 UTC), 6 km (3 mi) below the surface.
A larger quake followed: M2.3 22 km NNW of Carson, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1986-12-11 05:10:20 UTC
- Depth
- 5.6 km (3.5 mi), shallow
- Epicenter
- 46.213° N, 122.435° 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 0.5 km horizontally, 0.8 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 79°
- Stations used
- 26
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 1.63 km ESE of Woodland, Washington · 14541 days ago · 16 km deep · 41 km away
- 1.81 km NE of North Bonneville, Washington · 14536 days ago · 3 km deep · 73 km away
- 2.24 km SSE of Sandy, Oregon · 14532 days ago · 19 km deep · 96 km away
- 2.322 km NNW of Carson, Washington · 14500 days ago · 8 km deep · 50 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10215258. Read Mon, Oct 5, 2026, 2:39 PM UTC.