M1.8 earthquake 8 km SSE of Coupeville, Washington
A magnitude 1.8 earthquake struck 8 km SSE of Coupeville, Washington on Sun, Aug 30, 1992, 3:21 AM PDT (10:21 UTC), 25 km (16 mi) below the surface.
A larger quake followed: M2.5 2 km SW of Roosevelt, 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
- 1992-08-30 10:21:17 UTC
- Depth
- 25.2 km (15.7 mi), shallow
- Epicenter
- 48.152° N, 122.649° 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 0.6 km horizontally, 1.2 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 77°
- Stations used
- 23
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
- 2.10 km NW of Carnation, Washington · 12445 days ago · 8 km deep · 78 km away
- 1.95 km WSW of Darrington, Washington · 12444 days ago · 8 km deep · 73 km away
- 2.35 km WSW of Darrington, Washington · 12444 days ago · 1 km deep · 73 km away
- 2.52 km SW of Roosevelt, Washington · 12443 days ago · 18 km deep · 55 km away
- 1.712 km SSW of Friday Harbor, Washington · 12440 days ago · 27 km deep · 44 km away
- 1.68 km SSW of May Creek, Washington · 12429 days ago · 4 km deep · 82 km away
- 1.74 km W of Swede Heaven, WA · 12416 days ago · 8 km deep · 66 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10300708. Read Sat, Oct 3, 2026, 2:08 AM UTC.