M1.6 earthquake 7 km N of Amboy, Washington
A magnitude 1.6 earthquake struck 7 km N of Amboy, Washington on Fri, Dec 17, 1999, 12:35 PM PST (20:35 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M2.2 3 km ENE of Government Camp, 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, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1999-12-17 20:35:34 UTC
- Depth
- 14.5 km (9.0 mi), shallow
- Epicenter
- 45.980° N, 122.463° 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
- ±0.03
- Depth from
- From location
- Station coverage gap
- 66°
- Stations used
- 30
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 3 in the 30 days before it.
After
- 1.6Washington-Oregon border region · 9781 days ago · 8 km deep · 15 km away
- 1.6Washington · 9778 days ago · 1 km deep · 30 km away
- 1.837 km SSE of Morton, Washington · 9777 days ago · 11 km deep · 44 km away
- 1.512 km NE of Woodland, Washington · 9765 days ago · 11 km deep · 12 km away
- 2.23 km ENE of Government Camp, Oregon · 9757 days ago · 4 km deep · 94 km away
- 1.83 km ESE of Molalla, Oregon · 9750 days ago · -1 km deep · 95 km away
- 1.711 km SSE of Mineral, Washington · 9738 days ago · 18 km deep · 76 km away
- 1.92 km WNW of Barlow, Oregon · 9729 days ago · 29 km deep · 83 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10486853. Read Thu, Oct 1, 2026, 5:50 PM UTC.