M1.7 earthquake 10 km WNW of Amboy, Washington
A magnitude 1.7 earthquake struck 10 km WNW of Amboy, Washington on Wed, Jan 4, 1978, 9:51 AM PST (17:51 UTC), 2 km (1 mi) below the surface.
A larger quake followed: M1.8 23 km N 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
- 1.7 (md), micro
- Local time
- UTC
- 1978-01-04 17:51:47 UTC
- Depth
- 1.9 km (1.2 mi), shallow
- Epicenter
- 45.948° N, 122.566° 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 2.0 km horizontally, 2.1 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 276°, poorly surrounded by stations
- Stations used
- 5
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 0 in the 30 days before it.
After
- 1.68 km SSE of Mineral, Washington · 17765 days ago · 3 km deep · 83 km away
- 1.69 km WNW of Morton, Washington · 17739 days ago · 19 km deep · 73 km away
- 1.823 km N of Amboy, Washington · 17735 days ago · 12 km deep · 22 km away
- 1.911 km NE of Woodland, Washington · 17735 days ago · 4 km deep · 8 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10845488. Read Tue, Sep 22, 2026, 12:08 PM UTC.