M1.5 earthquake 37 km SSE of Morton, Washington
A magnitude 1.5 earthquake struck 37 km SSE of Morton, Washington on Sat, Oct 13, 1979, 3:42 AM PDT (10:42 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M1.6 11 km SSE of Mossyrock, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (md), micro
- Local time
- UTC
- 1979-10-13 10:42:09 UTC
- Depth
- 6.1 km (3.8 mi), shallow
- Epicenter
- 46.248° N, 122.093° 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 0.8 km horizontally, 1.1 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 217°, poorly surrounded by stations
- Stations used
- 7
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 1 in the 30 days before it.
After
- 1.611 km SSE of Mossyrock, Washington · 17142 days ago · 16 km deep · 32 km away
- 2.617 km SSE of Carbonado, Washington · 17126 days ago · 9 km deep · 78 km away
- 1.512 km NE of Ashford, Washington · 17120 days ago · 7 km deep · 67 km away
- 1.512 km SW of Alder, Washington · 17120 days ago · -1 km deep · 58 km away
- 2.038 km NNE of Amboy, Washington · 17114 days ago · -1 km deep · 9 km away
- 1.710 km NNW of Onalaska, Washington · 17104 days ago · 8 km deep · 69 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10850818. Read Tue, Sep 22, 2026, 5:24 PM UTC.