M1.6 earthquake 23 km SW of Winthrop, Washington
A magnitude 1.6 earthquake struck 23 km SW of Winthrop, Washington on Wed, Aug 3, 2005, 12:38 PM PDT (19:38 UTC), 1 km (1 mi) below the surface.
A larger quake followed: M2.8 40 km SW of Princeton, Canada. 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
- 2005-08-03 19:38:11 UTC
- Depth
- 0.9 km (0.5 mi), shallow
- Epicenter
- 48.354° N, 120.447° 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 0.7 km horizontally, 0.9 km in depth
- Magnitude uncertainty
- ±0.02
- Depth from
- Operator assigned
- Station coverage gap
- 236°, poorly surrounded by stations
- Stations used
- 8
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 2 in the 30 days before it.
After
- 1.521 km NNE of Concrete, Washington · 7730 days ago · 0 km deep · 98 km away
- 2.56 km WSW of Darrington, Washington · 7707 days ago · 8 km deep · 92 km away
- 1.64 km N of Entiat, Washington · 7707 days ago · -1 km deep · 73 km away
- 1.81 km SE of Entiat, Washington · 7701 days ago · -1 km deep · 78 km away
- 2.840 km SW of Princeton, Canada · 7695 days ago · -1 km deep · 94 km away
- 1.64 km NW of Entiat, Washington · 7688 days ago · -1 km deep · 74 km away
- 2.617 km NW of Leavenworth, Washington · 7675 days ago · 4 km deep · 79 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10672493. Read Sat, Oct 3, 2026, 1:52 AM UTC.