M1.6 earthquake 41 km SSE of Morton, Washington
A magnitude 1.6 earthquake struck 41 km SSE of Morton, Washington on Sat, Dec 6, 1986, 8:25 PM PST (04:25 UTC), 5 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
- 1.6 (md), micro
- Local time
- UTC
- 1986-12-07 04:25:19 UTC
- Depth
- 5.4 km (3.4 mi), shallow
- Epicenter
- 46.214° N, 122.077° 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 0.2 km horizontally, 0.3 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 57°
- Stations used
- 22
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 1.734 km N of Amboy, WA · 14538 days ago · 6 km deep · 28 km away
- 1.63 km ESE of Woodland, Washington · 14535 days ago · 16 km deep · 60 km away
- 1.81 km NE of North Bonneville, Washington · 14530 days ago · 3 km deep · 64 km away
- 2.24 km SSE of Sandy, Oregon · 14526 days ago · 19 km deep · 96 km away
- 2.322 km NNW of Carson, Washington · 14495 days ago · 8 km deep · 36 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10214688. Read Tue, Sep 29, 2026, 11:10 PM UTC.