M1.7 earthquake 8 km SSW of Chelan Falls, Washington
A magnitude 1.7 earthquake struck 8 km SSW of Chelan Falls, Washington on Mon, Jul 3, 1978, 12:35 PM PDT (19:35 UTC), 4 km (2 mi) below the surface.
A larger quake followed: M2.0 8 km N of Waterville, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (md), micro
- Local time
- UTC
- 1978-07-03 19:35:26 UTC
- Depth
- 3.6 km (2.3 mi), shallow
- Epicenter
- 47.732° N, 120.025° 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, 1.0 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From location
- Station coverage gap
- 122°
- Stations used
- 7
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 2 in the 30 days before it.
After
- 1.57 km W of Entiat, Washington · 17609 days ago · 0 km deep · 22 km away
- 1.78 km SW of Entiat, Washington · 17606 days ago · 0 km deep · 23 km away
- 1.710 km NW of Entiat, Washington · 17604 days ago · 0 km deep · 22 km away
- 1.65 km NNW of Waterville, Washington · 17604 days ago · 4 km deep · 6 km away
- 2.08 km N of Waterville, Washington · 17562 days ago · 3 km deep · 2 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10847363. Read Tue, Sep 22, 2026, 10:00 AM UTC.