M3.3 earthquake 17 km NE of Bridgeport, Washington
A magnitude 3.3 earthquake struck 17 km NE of Bridgeport, Washington on Tue, Mar 21, 1978, 7:08 PM PST (03:08 UTC), 12 km (8 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.3 (md), minor
- Local time
- UTC
- 1978-03-22 03:08:59 UTC
- Depth
- 12.3 km (7.6 mi), shallow
- Epicenter
- 48.111° N, 119.501° 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 0.5 km horizontally, 0.4 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- From location
- Station coverage gap
- 217°, poorly surrounded by stations
- Stations used
- 10
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 1.815 km NE of Bridgeport, Washington · 17716 days ago · 11 km deep · 2 km away
- 1.710 km ENE of Conconully, Washington · 17705 days ago · 17 km deep · 54 km away
- 1.610 km W of Entiat, Washington · 17695 days ago · 0 km deep · 80 km away
- 3.37 km NNW of Entiat, Washington · 17690 days ago · 4 km deep · 69 km away
Before
- 1.66 km NE of Waterville, Washington · 17722 days ago · 2 km deep · 61 km away
- 1.92 km SSW of Entiat, Washington · 17724 days ago · 4 km deep · 74 km away
- 1.911 km NNW of Entiat, Washington · 17740 days ago · 5 km deep · 66 km away
- 1.82 km S of Entiat, Washington · 17740 days ago · 3 km deep · 74 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10846243. Read Tue, Sep 22, 2026, 6:34 AM UTC.