M3.9 earthquake 241 km WNW of Bandon, Oregon
A magnitude 3.9 earthquake struck 241 km WNW of Bandon, Oregon on Wed, Mar 20, 1985, 10:40 AM PST (18:40 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 228 km WNW of Bandon, Oregon. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.9 (mb), minor
- Local time
- UTC
- 1985-03-20 18:40:25 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 43.676° N, 127.288° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.2297 km WNW of Barview, Oregon · 15151 days ago · 10 km deep · 59 km away
- 4.4246 km WNW of Bandon, Oregon · 15144 days ago · 10 km deep · 8 km away
- 5.0228 km WNW of Bandon, Oregon · 15119 days ago · 10 km deep · 17 km away
Before
Earthquakes todayOregon earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002d2s. Read Sun, Sep 27, 2026, 2:44 PM UTC.