M1.6 earthquake 15 km NNE of Prosser, Washington
A magnitude 1.6 earthquake struck 15 km NNE of Prosser, Washington on Tue, Sep 9, 2003, 5:49 PM PDT (00:49 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M1.8 30 km NNW of Goldendale, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 2003-09-10 00:49:22 UTC
- Depth
- 4.7 km (2.9 mi), shallow
- Epicenter
- 46.338° N, 119.685° 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, 0.4 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- From location
- Station coverage gap
- 142°
- Stations used
- 15
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 1.729 km NNW of Goldendale, Washington · 8392 days ago · 5 km deep · 98 km away
- 1.830 km NNW of Goldendale, Washington · 8392 days ago · 4 km deep · 98 km away
- 1.75 km S of Ahtanum, Washington · 8377 days ago · 16 km deep · 75 km away
- 1.812 km SSW of Royal City, Washington · 8365 days ago · 1 km deep · 51 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10594408. Read Thu, Oct 1, 2026, 1:48 PM UTC.