M2.3 earthquake 4 km ESE of Union, Washington
A magnitude 2.3 earthquake struck 4 km ESE of Union, Washington on Mon, Sep 10, 2001, 2:46 PM PDT (21:46 UTC), 46 km (28 mi) below the surface.
A larger quake followed: M2.9 3 km NNE of Jamestown, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.3 (md), micro
- Local time
- UTC
- 2001-09-10 21:46:58 UTC
- Depth
- 45.8 km (28.5 mi), shallow
- Epicenter
- 47.343° N, 123.050° 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 0.6 km horizontally, 0.8 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- From location
- Station coverage gap
- 35°
- Stations used
- 52
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 7 in the 30 days before it.
After
- 1.82 km NNW of Belfair, Washington · 9142 days ago · 24 km deep · 21 km away
- 2.93 km NNE of Jamestown, Washington · 9116 days ago · 44 km deep · 90 km away
- 1.56 km SSW of Quilcene, Washington · 9110 days ago · 50 km deep · 48 km away
- 2.13 km ENE of Union Hill-Novelty Hill, Washington · 9105 days ago · 1 km deep · 89 km away
- 1.76 km ESE of Carbonado, Washington · 9104 days ago · 4 km deep · 88 km away
- 2.31 km SW of Lake Marcel-Stillwater, Washington · 9103 days ago · 25 km deep · 92 km away
Before
- 2.32 km S of Coupeville, Washington · 9152 days ago · 56 km deep · 99 km away
- 2.115 km ESE of Carbonado, Washington · 9161 days ago · 16 km deep · 96 km away
- 1.73 km NNE of White Center, Washington · 9164 days ago · 30 km deep · 58 km away
- 1.74 km WNW of Dash Point, Washington · 9173 days ago · 21 km deep · 43 km away
- 1.81 km SSW of Auburn, Washington · 9173 days ago · 16 km deep · 62 km away
- 2.28 km NW of Seattle, Washington · 9177 days ago · 26 km deep · 59 km away
- 1.54 km W of Gorst, Washington · 9180 days ago · 25 km deep · 29 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10536103. Read Wed, Sep 30, 2026, 11:30 AM UTC.