M1.7 earthquake 7 km NNE of Satsop, Washington
A magnitude 1.7 earthquake struck 7 km NNE of Satsop, Washington on Wed, Aug 11, 1999, 10:37 AM PDT (17:37 UTC), 40 km (25 mi) below the surface.
A larger quake followed: M3.1 20 km WSW of Brinnon, 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
- 1999-08-11 17:37:31 UTC
- Depth
- 40.3 km (25.0 mi), shallow
- Epicenter
- 47.072° N, 123.463° 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 0.9 km horizontally, 0.5 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 116°
- Stations used
- 28
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 1 in the 30 days before it.
After
- 3.120 km WSW of Brinnon, Washington · 9896 days ago · 46 km deep · 66 km away
- 1.54 km E of Dash Point, Washington · 9893 days ago · 22 km deep · 87 km away
- 1.66 km SW of Lofall, Washington · 9890 days ago · 16 km deep · 96 km away
- 2.9Olympic Peninsula, Washington · 9882 days ago · -1 km deep · 54 km away
- 2.85 km SSW of Shelton, Washington · 9879 days ago · 46 km deep · 28 km away
- 1.633 km N of Amanda Park, Washington · 9872 days ago · 36 km deep · 83 km away
- 1.62 km N of Gorst, Washington · 9850 days ago · -1 km deep · 77 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10480073. Read Tue, Sep 22, 2026, 10:27 PM UTC.