M2.6 earthquake 42 km SSE of Morton, Washington
A magnitude 2.6 earthquake struck 42 km SSE of Morton, Washington on Fri, Oct 10, 1975, 10:30 PM PDT (05:30 UTC), 9 km (5 mi) below the surface.
A larger quake followed: M3.2 27 km NE of Amboy, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.6 (md), micro
- Local time
- UTC
- 1975-10-11 05:30:54 UTC
- Depth
- 8.5 km (5.3 mi), shallow
- Epicenter
- 46.202° N, 122.092° 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 6.1 km horizontally, 7.2 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 242°, poorly surrounded by stations
- Stations used
- 4
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
- 3.227 km NE of Amboy, Washington · 18608 days ago · 23 km deep · 15 km away
- 1.813 km NNW of Mossyrock, Washington · 18608 days ago · -1 km deep · 61 km away
- 2.213 km NNW of Mossyrock, Washington · 18608 days ago · 13 km deep · 60 km away
- 1.913 km SSE of Pe Ell, Washington · 18606 days ago · -1 km deep · 93 km away
- 2.218 km N of Mossyrock, Washington · 18598 days ago · 2 km deep · 63 km away
- 1.713 km WSW of Alder, Washington · 18597 days ago · -1 km deep · 66 km away
- 1.96 km SW of Morton, Washington · 18591 days ago · 11 km deep · 40 km away
Before
- 2.727 km S of Morton, Washington · 18612 days ago · 11 km deep · 18 km away
- 2.024 km S of Morton, Washington · 18625 days ago · -1 km deep · 20 km away
- 1.724 km SE of Greenwater, Washington · 18627 days ago · 8 km deep · 98 km away
- 1.911 km W of Packwood, Washington · 18629 days ago · 4 km deep · 49 km away
- 2.024 km S of Morton, Washington · 18632 days ago · 7 km deep · 19 km away
- 2.925 km S of Morton, Washington · 18633 days ago · 9 km deep · 20 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10861978. Read Tue, Sep 22, 2026, 4:59 AM UTC.