M1.8 earthquake Oregon
A magnitude 1.8 earthquake struck in Oregon on Wed, Sep 22, 1976, 7:55 PM PDT (02:55 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M2.0 6 km WNW of Highland, 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
- 1976-09-23 02:55:43 UTC
- Depth
- 10.4 km (6.5 mi), shallow
- Epicenter
- 45.796° N, 118.606° W
- Region
- Oregon
- 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 9.1 km horizontally, 38.8 km in depth
- Magnitude uncertainty
- ±0.21
- Depth from
- Operator assigned
- Station coverage gap
- 158°
- 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 2 in the 30 days before it.
After
- 1.710 km ESE of Starbuck, Washington · 18261 days ago · 0 km deep · 91 km away
- 2.06 km WNW of Highland, Washington · 18245 days ago · 0 km deep · 60 km away
Before
Earthquakes todayOregon earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10842253. Read Wed, Sep 23, 2026, 6:13 AM UTC.