M1.7 earthquake 7 km E of Conconully, Washington
A magnitude 1.7 earthquake struck 7 km E of Conconully, Washington on Sat, Apr 7, 1979, 3:28 AM PST (11:28 UTC), 9 km (6 mi) below the surface.
A larger quake followed: M2.3 9 km NE of Oroville, 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
- 1979-04-07 11:28:58 UTC
- Depth
- 9.2 km (5.7 mi), shallow
- Epicenter
- 48.567° N, 119.652° 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 2.2 km horizontally, 2.8 km in depth
- Magnitude uncertainty
- ±0.19
- Depth from
- From location
- Station coverage gap
- 251°, poorly surrounded by stations
- 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: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.012 km ENE of Conconully, Washington · 17342 days ago · 17 km deep · 6 km away
- 2.09 km NNW of Mansfield, Washington · 17335 days ago · 5 km deep · 75 km away
- 1.810 km NNW of Mansfield, Washington · 17328 days ago · 3 km deep · 74 km away
- 1.78 km NNE of Waterville, Washington · 17309 days ago · 5 km deep · 98 km away
- 2.39 km NE of Oroville, Washington · 17288 days ago · 10 km deep · 53 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10849453. Read Tue, Sep 29, 2026, 2:40 PM UTC.