M1.8 earthquake 7 km NE of Winthrop, Washington
A magnitude 1.8 earthquake struck 7 km NE of Winthrop, Washington on Thu, Jul 29, 2004, 9:52 AM PDT (16:52 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.9 16 km WSW of Conconully, 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
- 2004-07-29 16:52:44 UTC
- Depth
- -0.4 km (-0.3 mi), shallow
- Epicenter
- 48.534° N, 120.123° 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 1.1 km horizontally
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 133°
- Stations used
- 10
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 4 in the 30 days before it.
After
- 1.59 km NNW of Entiat, Washington · 8095 days ago · -1 km deep · 88 km away
- 2.016 km WSW of Electric City, Washington · 8087 days ago · 0 km deep · 98 km away
- 2.3Washington · 8084 days ago · 0 km deep · 98 km away
- 1.912 km SSE of Pateros, Washington · 8071 days ago · 0 km deep · 69 km away
- 2.916 km WSW of Conconully, Washington · 8070 days ago · -1 km deep · 13 km away
- 1.74 km SE of Entiat, Washington · 8069 days ago · 4 km deep · 98 km away
- 1.98 km WSW of Chelan Falls, Washington · 8068 days ago · -1 km deep · 84 km away
- 1.816 km WSW of Electric City, Washington · 8055 days ago · 0 km deep · 98 km away
- 2.40 km N of Entiat, Washington · 8050 days ago · 3 km deep · 95 km away
- 1.84 km N of Waterville, Washington · 8044 days ago · 4 km deep · 94 km away
- 1.78 km WSW of Chelan Falls, Washington · 8040 days ago · -1 km deep · 85 km away
Before
- 1.79 km NW of Entiat, Washington · 8102 days ago · -1 km deep · 90 km away
- 1.658 km SSW of Princeton, Canada · 8105 days ago · 8 km deep · 67 km away
- 1.79 km WSW of Chelan Falls, Washington · 8108 days ago · -1 km deep · 86 km away
- 1.61 km WSW of Entiat, Washington · 8115 days ago · 3 km deep · 96 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10616973. Read Fri, Oct 2, 2026, 9:44 AM UTC.