M1.7 earthquake 10 km ENE of Conconully, Washington
A magnitude 1.7 earthquake struck 10 km ENE of Conconully, Washington on Sat, Apr 1, 1978, 6:17 PM PST (02:17 UTC), 17 km (11 mi) below the surface.
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
- 1978-04-02 02:17:18 UTC
- Depth
- 17.2 km (10.7 mi), shallow
- Epicenter
- 48.590° N, 119.619° 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 1.1 km horizontally, 1.3 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 290°, poorly surrounded by stations
- Stations used
- 7
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 0 in the 60 days after this one and 2 in the 30 days before it.
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10846408. Read Tue, Sep 22, 2026, 7:36 PM UTC.