M1.8 earthquake 33 km NE of Amboy, Washington
A magnitude 1.8 earthquake struck 33 km NE of Amboy, Washington on Sat, May 26, 1973, 5:52 AM PDT (12:52 UTC), 8 km (5 mi) below the surface.
A larger quake followed: M3.9 17 km ENE of Ashford, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1973-05-26 12:52:48 UTC
- Depth
- 7.8 km (4.8 mi), shallow
- Epicenter
- 46.128° N, 122.152° 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 1.4 km horizontally, 0.5 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 273°, poorly surrounded by stations
- Stations used
- 4
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 2.036 km SSE of Morton, Washington · 19482 days ago · 6 km deep · 13 km away
- 2.39 km SW of Clatskanie, Oregon · 19466 days ago · 17 km deep · 89 km away
- 1.7Washington · 19460 days ago · 13 km deep · 31 km away
- 1.921 km E of Morton, Washington · 19459 days ago · 16 km deep · 46 km away
- 3.917 km ENE of Ashford, Washington · 19437 days ago · 6 km deep · 82 km away
- 2.417 km ENE of Ashford, Washington · 19437 days ago · 10 km deep · 83 km away
- 2.917 km ENE of Ashford, Washington · 19437 days ago · 7 km deep · 82 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10856253. Read Mon, Oct 5, 2026, 11:51 AM UTC.