M1.7 earthquake 8 km NE of Waterville, Washington
A magnitude 1.7 earthquake struck 8 km NE of Waterville, Washington on Mon, Aug 20, 1979, 8:58 AM PDT (15:58 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.1 6 km ENE of Royal City, 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
- 1979-08-20 15:58:26 UTC
- Depth
- -0.3 km (-0.2 mi), shallow
- Epicenter
- 47.701° N, 119.998° 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 0.3 km horizontally
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 90°
- Stations used
- 8
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 1 in the 30 days before it.
After
- 1.74 km E of Royal City, Washington · 17173 days ago · 0 km deep · 94 km away
- 2.16 km ENE of Royal City, Washington · 17166 days ago · 0 km deep · 92 km away
- 1.95 km NE of Royal City, Washington · 17154 days ago · 5 km deep · 91 km away
- 2.13 km NNE of Royal City, Washington · 17154 days ago · 5 km deep · 91 km away
- 1.65 km NE of Royal City, Washington · 17154 days ago · 0 km deep · 92 km away
- 1.66 km ENE of Royal City, Washington · 17153 days ago · 4 km deep · 92 km away
- 1.76 km NE of Royal City, Washington · 17153 days ago · 0 km deep · 90 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10850513. Read Wed, Sep 23, 2026, 3:31 AM UTC.