M1.8 earthquake 17 km E of Mansfield, Washington
A magnitude 1.8 earthquake struck 17 km E of Mansfield, Washington on Fri, Aug 27, 1976, 11:25 AM PDT (18:25 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.3 10 km N 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
- 1.8 (md), micro
- Local time
- UTC
- 1976-08-27 18:25:34 UTC
- Depth
- -0.2 km (-0.1 mi), shallow
- Epicenter
- 47.837° N, 119.401° 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 0.6 km horizontally
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 135°
- Stations used
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 3 in the 30 days before it.
After
- 2.310 km N of Entiat, Washington · 18285 days ago · 0 km deep · 62 km away
- 3.12 km SSE of Entiat, Washington · 18285 days ago · 5 km deep · 63 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10842088. Read Tue, Sep 22, 2026, 9:11 AM UTC.