M3.1 earthquake 10 km NNW of Mansfield, Washington
A magnitude 3.1 earthquake struck 10 km NNW of Mansfield, Washington on Tue, Oct 10, 1978, 5:04 AM PDT (12:04 UTC), 4 km (2 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.1 (md), minor
- Local time
- UTC
- 1978-10-10 12:04:28 UTC
- Depth
- 3.7 km (2.3 mi), shallow
- Epicenter
- 47.899° N, 119.690° 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, 1.1 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 63°
- Stations used
- 13
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 uw10848073. Read Tue, Sep 22, 2026, 5:59 AM UTC.