M1.7 earthquake 8 km NNE of Waterville, Washington
A magnitude 1.7 earthquake struck 8 km NNE of Waterville, Washington on Thu, May 10, 1979, 1:19 AM PDT (08:19 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M2.4 6 km WNW of Entiat, 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
- 1979-05-10 08:19:47 UTC
- Depth
- 4.8 km (3.0 mi), shallow
- Epicenter
- 47.721° N, 120.047° 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 0.4 km horizontally, 1.1 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 107°
- 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: 3 in the 60 days after this one and 5 in the 30 days before it.
After
- 2.46 km WNW of Entiat, Washington · 17293 days ago · 7 km deep · 18 km away
- 1.840 km NE of Skykomish, Washington · 17270 days ago · 9 km deep · 73 km away
- 2.510 km W of Entiat, Washington · 17245 days ago · 4 km deep · 23 km away
Before
- 1.6Washington · 17310 days ago · 6 km deep · 22 km away
- 1.9Washington · 17319 days ago · 0 km deep · 26 km away
- 1.810 km NNW of Mansfield, Washington · 17321 days ago · 3 km deep · 34 km away
- 1.73 km ESE of Kittitas, Washington · 17327 days ago · 19 km deep · 87 km away
- 2.09 km NNW of Mansfield, Washington · 17328 days ago · 5 km deep · 33 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10849693. Read Tue, Sep 22, 2026, 4:15 PM UTC.