M1.7 earthquake 40 km SSE of Morton, Washington
A magnitude 1.7 earthquake struck 40 km SSE of Morton, Washington on Tue, Oct 11, 1977, 10:24 PM PDT (05:24 UTC), 3 km (2 mi) below the surface.
A larger quake followed: M1.9 2 km WSW of Ashford, 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
- 1977-10-12 05:24:25 UTC
- Depth
- 3.3 km (2.1 mi), shallow
- Epicenter
- 46.219° N, 122.087° 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 1.4 km horizontally, 2.4 km in depth
- Depth from
- From location
- Station coverage gap
- 234°, poorly surrounded by stations
- Stations used
- 6
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 7 in the 30 days before it.
After
- 1.625 km ENE of Ashford, Washington · 17871 days ago · 0 km deep · 75 km away
- 1.92 km WSW of Ashford, Washington · 17845 days ago · 0 km deep · 59 km away
- 1.92 km SW of Ashford, Washington · 17845 days ago · -1 km deep · 58 km away
- 2.17 km SE of Mossyrock, Washington · 17838 days ago · 16 km deep · 38 km away
- 2.124 km N of Packwood, Washington · 17830 days ago · 5 km deep · 75 km away
- 2.118 km WSW of Nile, Washington · 17828 days ago · 1 km deep · 92 km away
- 1.821 km SE of Carbonado, Washington · 17827 days ago · 17 km deep · 85 km away
Before
- 2.216 km ENE of Yacolt, Washington · 17882 days ago · -1 km deep · 36 km away
- 1.511 km SSE of Pe Ell, Washington · 17884 days ago · 28 km deep · 95 km away
- 2.122 km N of Carson, Washington · 17888 days ago · -1 km deep · 39 km away
- 1.914 km E of Wilkeson, Washington · 17889 days ago · 7 km deep · 99 km away
- 1.915 km NNE of Ashford, Washington · 17894 days ago · 4 km deep · 75 km away
- 2.18 km NNE of Mossyrock, Washington · 17901 days ago · 20 km deep · 51 km away
- 2.06 km N of Mossyrock, Washington · 17902 days ago · 23 km deep · 51 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10844893. Read Tue, Sep 22, 2026, 3:20 PM UTC.