M1.7 earthquake 19 km N of Detroit, Oregon
A magnitude 1.7 earthquake struck 19 km N of Detroit, Oregon on Mon, Jul 6, 1981, 4:00 PM PDT (23:00 UTC), 14 km (8 mi) below the surface.
A larger quake followed: M1.9 14 km S of Cascadia, Oregon. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (md), micro
- Local time
- UTC
- 1981-07-06 23:00:16 UTC
- Depth
- 13.7 km (8.5 mi), shallow
- Epicenter
- 44.911° N, 122.160° 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 0.9 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 124°
- Stations used
- 8
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 2 in the 30 days before it.
After
- 1.914 km S of Cascadia, Oregon · 16513 days ago · 3 km deep · 77 km away
- 1.55 km SW of Detroit, Oregon · 16462 days ago · 1 km deep · 25 km away
- 1.63 km WSW of Tygh Valley, Oregon · 16455 days ago · -1 km deep · 83 km away
Before
Earthquakes todayOregon earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10114018. Read Tue, Sep 22, 2026, 3:25 PM UTC.