M1.9 earthquake 11 km NNW of Entiat, Washington
A magnitude 1.9 earthquake struck 11 km NNW of Entiat, Washington on Sat, Feb 25, 1978, 9:39 PM PST (05:39 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M3.3 17 km NE of Bridgeport, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.9 (md), micro
- Local time
- UTC
- 1978-02-26 05:39:08 UTC
- Depth
- 5.4 km (3.4 mi), shallow
- Epicenter
- 47.778° N, 120.239° 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 0.2 km horizontally, 1.1 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 93°
- 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: 7 in the 60 days after this one and 1 in the 30 days before it.
After
- 1.92 km SSW of Entiat, Washington · 17731 days ago · 4 km deep · 14 km away
- 1.66 km NE of Waterville, Washington · 17729 days ago · 2 km deep · 19 km away
- 3.317 km NE of Bridgeport, Washington · 17723 days ago · 12 km deep · 66 km away
- 1.815 km NE of Bridgeport, Washington · 17723 days ago · 11 km deep · 65 km away
- 1.610 km W of Entiat, Washington · 17702 days ago · 0 km deep · 14 km away
- 1.88 km WNW of Cascade Valley, Washington · 17702 days ago · 15 km deep · 92 km away
- 3.37 km NNW of Entiat, Washington · 17698 days ago · 4 km deep · 5 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10845928. Read Tue, Sep 29, 2026, 9:44 AM UTC.