M1.9 earthquake Washington
A magnitude 1.9 earthquake struck in Washington on Sat, Sep 8, 1979, 11:10 PM PDT (06:10 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M2.6 17 km SSE of Carbonado, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.9 (md), micro
- Local time
- UTC
- 1979-09-09 06:10:18 UTC
- Depth
- 10.3 km (6.4 mi), shallow
- Epicenter
- 46.486° N, 122.308° 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 1.3 km horizontally, 1.7 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- Operator assigned
- Station coverage gap
- 225°, poorly surrounded by stations
- 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: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 1.68 km SW of Morton, Washington · 17169 days ago · 20 km deep · 4 km away
- 1.537 km SSE of Morton, Washington · 17147 days ago · 6 km deep · 31 km away
- 1.611 km SSE of Mossyrock, Washington · 17143 days ago · 16 km deep · 9 km away
- 2.617 km SSE of Carbonado, Washington · 17126 days ago · 9 km deep · 57 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10850643. Read Wed, Sep 23, 2026, 12:50 AM UTC.