M1.6 earthquake 9 km SSW of Morton, Washington
A magnitude 1.6 earthquake struck 9 km SSW of Morton, Washington on Mon, Jul 9, 1979, 12:05 PM PDT (19:05 UTC), 19 km (12 mi) below the surface.
A larger quake followed: M1.7 10 km WNW of North Portland, Oregon. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (md), micro
- Local time
- UTC
- 1979-07-09 19:05:29 UTC
- Depth
- 18.9 km (11.7 mi), shallow
- Epicenter
- 46.478° N, 122.316° 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 0.7 km horizontally, 0.8 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 124°
- Stations used
- 9
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 6 in the 30 days before it.
After
- 1.710 km WNW of North Portland, Oregon · 17235 days ago · 13 km deep · 100 km away
- 1.728 km S of Morton, Washington · 17227 days ago · 5 km deep · 21 km away
- 1.9Washington · 17220 days ago · 26 km deep · 61 km away
- 1.516 km S of Morton, Washington · 17218 days ago · 20 km deep · 8 km away
- 1.714 km S of Packwood, Washington · 17184 days ago · 2 km deep · 47 km away
Before
- 1.810 km SSW of Morton, Washington · 17243 days ago · 19 km deep · 2 km away
- 1.99 km SSW of Morton, Washington · 17243 days ago · 20 km deep · 0 km away
- 2.710 km SSW of Morton, Washington · 17244 days ago · 22 km deep · 2 km away
- 3.69 km SSW of Morton, Washington · 17244 days ago · 20 km deep · 1 km away
- 1.73 km W of Covington, Washington · 17258 days ago · 1 km deep · 98 km away
- 2.42 km W of Fox Island, Washington · 17265 days ago · 23 km deep · 90 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10850188. Read Tue, Sep 22, 2026, 5:16 PM UTC.