M1.7 earthquake 21 km N of Amboy, Washington
A magnitude 1.7 earthquake struck 21 km N of Amboy, Washington on Sat, Aug 4, 2001, 5:51 AM PDT (12:51 UTC), 14 km (9 mi) below the surface.
A larger quake followed: M1.9 17 km S of Morton, 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
- 2001-08-04 12:51:18 UTC
- Depth
- 13.7 km (8.5 mi), shallow
- Epicenter
- 46.102° N, 122.482° 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 0.5 km horizontally, 0.8 km in depth
- Magnitude uncertainty
- ±0.02
- Depth from
- From location
- Station coverage gap
- 160°
- Stations used
- 20
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 6 in the 30 days before it.
After
- 1.817 km W of Packwood, Washington · 9167 days ago · 2 km deep · 74 km away
- 1.617 km E of Kelso, Washington · 9166 days ago · 12 km deep · 16 km away
- 1.619 km E of Kelso, Washington · 9156 days ago · 13 km deep · 15 km away
- 1.54 km ESE of Mossyrock, Washington · 9149 days ago · 19 km deep · 46 km away
- 1.615 km SSW of Morton, Washington · 9145 days ago · 16 km deep · 38 km away
- 1.538 km NNE of Amboy, Washington · 9136 days ago · 0 km deep · 25 km away
- 1.917 km S of Morton, Washington · 9132 days ago · 17 km deep · 37 km away
Before
- 1.622 km N of Amboy, Washington · 9193 days ago · 12 km deep · 0 km away
- 1.615 km ENE of Packwood, Washington · 9194 days ago · 2 km deep · 99 km away
- 1.66 km ESE of Mossyrock, Washington · 9196 days ago · 20 km deep · 44 km away
- 1.67 km SE of Mineral, Washington · 9207 days ago · 16 km deep · 70 km away
- 1.915 km ENE of Packwood, Washington · 9212 days ago · 5 km deep · 99 km away
- 2.23 km NW of Mulino, Oregon · 9214 days ago · 27 km deep · 97 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10531768. Read Wed, Sep 30, 2026, 10:34 AM UTC.