M1.7 earthquake 14 km SW of Cascade Valley, Washington
A magnitude 1.7 earthquake struck 14 km SW of Cascade Valley, Washington on Sun, Sep 9, 1984, 3:13 AM PDT (10:13 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.1 3 km SE 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
- 1.7 (md), micro
- Local time
- UTC
- 1984-09-09 10:13:29 UTC
- Depth
- 0.4 km (0.3 mi), shallow
- Epicenter
- 47.036° N, 119.445° 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 1.9 km horizontally
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 105°
- Stations used
- 18
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 6 in the 30 days before it.
After
- 2.13 km SE of Entiat, Washington · 15349 days ago · -1 km deep · 88 km away
- 1.72 km SE of Entiat, Washington · 15348 days ago · 0 km deep · 89 km away
- 2.12 km SSW of Entiat, Washington · 15340 days ago · 2 km deep · 90 km away
- 2.112 km NNE of Cashmere, Washington · 15333 days ago · 3 km deep · 98 km away
- 1.66 km N of Entiat, Washington · 15317 days ago · 0 km deep · 96 km away
- 2.315 km NNW of Vantage, Washington · 15302 days ago · 0 km deep · 49 km away
- 2.1Washington · 15301 days ago · 0 km deep · 49 km away
- 1.915 km SSW of Vantage, Washington · 15299 days ago · 3 km deep · 54 km away
- 1.7Washington · 15299 days ago · 0 km deep · 53 km away
- 2.213 km NW of Banks Lake South, Washington · 15297 days ago · 3 km deep · 77 km away
Before
- 1.89 km N of Banks Lake South, Washington · 15360 days ago · 10 km deep · 77 km away
- 2.3Washington · 15360 days ago · 0 km deep · 86 km away
- 1.77 km NNE of Entiat, Washington · 15365 days ago · 0 km deep · 96 km away
- 2.18 km SW of Tri-Cities, Washington · 15369 days ago · 0 km deep · 96 km away
- 1.919 km WSW of Electric City, Washington · 15378 days ago · 5 km deep · 92 km away
- 1.812 km NNE of Sunnyslope, Washington · 15378 days ago · 6 km deep · 88 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10180653. Read Tue, Sep 22, 2026, 9:18 PM UTC.