M1.6 earthquake 10 km NNW of Mansfield, Washington
A magnitude 1.6 earthquake struck 10 km NNW of Mansfield, Washington on Fri, Mar 16, 1979, 7:50 PM PST (03:50 UTC), 4 km (2 mi) below the surface.
A larger quake followed: M2.0 12 km ENE of Conconully, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (md), micro
- Local time
- UTC
- 1979-03-17 03:50:26 UTC
- Depth
- 3.6 km (2.2 mi), shallow
- Epicenter
- 47.898° N, 119.680° 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 0.7 km horizontally, 3.2 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 115°
- 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: 8 in the 60 days after this one and 4 in the 30 days before it.
After
- 1.717 km ENE of Leavenworth, Washington · 17348 days ago · 0 km deep · 63 km away
- 1.77 km E of Conconully, Washington · 17342 days ago · 9 km deep · 74 km away
- 2.012 km ENE of Conconully, Washington · 17342 days ago · 17 km deep · 79 km away
- 2.09 km NNW of Mansfield, Washington · 17335 days ago · 5 km deep · 1 km away
- 1.810 km NNW of Mansfield, Washington · 17328 days ago · 3 km deep · 0 km away
- 1.9Washington · 17325 days ago · 0 km deep · 58 km away
- 1.6Washington · 17317 days ago · 6 km deep · 55 km away
- 1.78 km NNE of Waterville, Washington · 17309 days ago · 5 km deep · 34 km away
Before
- 1.815 km W of Entiat, Washington · 17363 days ago · -1 km deep · 60 km away
- 1.67 km WSW of Entiat, Washington · 17366 days ago · 2 km deep · 53 km away
- 1.912 km SSW of Marlin, Washington · 17379 days ago · 1 km deep · 82 km away
- 1.846 km WNW of Granite Falls, Washington · 17390 days ago · 0 km deep · 83 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10849253. Read Tue, Sep 29, 2026, 2:06 AM UTC.