M2.4 earthquake Oregon
A magnitude 2.4 earthquake struck in Oregon on Wed, Feb 22, 1978, 4:48 PM PST (00:48 UTC), 8 km (5 mi) below the surface.
A larger quake followed: M2.8 4 km SE of Wallula, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.4 (md), micro
- Local time
- UTC
- 1978-02-23 00:48:59 UTC
- Depth
- 7.6 km (4.7 mi), shallow
- Epicenter
- 45.991° N, 118.399° 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 3.1 km horizontally, 2.6 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 198°, poorly surrounded by stations
- 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: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.84 km SE of Wallula, Washington · 17734 days ago · 13 km deep · 36 km away
- 1.66 km E of Wallula, Washington · 17729 days ago · 0 km deep · 34 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10845898. Read Wed, Sep 23, 2026, 4:18 AM UTC.