M2.1 earthquake 6 km SW of Chelan Falls, Washington
A magnitude 2.1 earthquake struck 6 km SW of Chelan Falls, Washington on Fri, Aug 29, 1975, 9:52 PM PDT (04:52 UTC), 3 km (2 mi) below the surface.
A larger quake followed: M2.4 2 km WNW of Entiat, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.1 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1975-08-30 04:52:46 UTC
- Depth
- 3.4 km (2.1 mi), shallow
- Epicenter
- 47.761° N, 120.050° 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 0.4 km horizontally, 1.3 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 129°
- Stations used
- 6
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 2.011 km SSW of Mansfield, Washington · 18654 days ago · 18 km deep · 25 km away
- 1.731 km N of Leavenworth, Washington · 18653 days ago · -1 km deep · 46 km away
- 2.38 km ENE of Disautel, Washington · 18622 days ago · 0 km deep · 97 km away
- 2.42 km WNW of Entiat, Washington · 18620 days ago · 15 km deep · 17 km away
- 1.78 km S of Entiat, Washington · 18612 days ago · 3 km deep · 22 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10861583. Read Mon, Oct 5, 2026, 1:41 AM UTC.