M1.6 earthquake Washington
A magnitude 1.6 earthquake struck in Washington on Fri, Dec 24, 1999, 12:33 PM PST (20:33 UTC), 1 km (1 mi) below the surface.
A larger quake followed: M2.4 35 km NE of Amboy, 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
- 1999-12-24 20:33:27 UTC
- Depth
- 1.5 km (0.9 mi), shallow
- Epicenter
- 46.113° N, 122.802° 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 0.9 km horizontally, 2.3 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 123°
- Stations used
- 13
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 1.837 km SSE of Morton, Washington · 9775 days ago · 11 km deep · 60 km away
- 1.512 km NE of Woodland, Washington · 9763 days ago · 11 km deep · 21 km away
- 1.711 km SSE of Mineral, Washington · 9736 days ago · 18 km deep · 77 km away
- 1.92 km WNW of Barlow, Oregon · 9727 days ago · 29 km deep · 95 km away
- 1.96 km SSW of Morton, Washington · 9718 days ago · 20 km deep · 57 km away
- 2.435 km NE of Amboy, Washington · 9716 days ago · 10 km deep · 51 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10488563. Read Tue, Sep 29, 2026, 5:17 PM UTC.