M2.0 earthquake 17 km WNW of Ione, Oregon
A magnitude 2.0 earthquake struck 17 km WNW of Ione, Oregon on Sun, Aug 20, 1972, 3:56 PM PDT (22:56 UTC), -1 km (0 mi) below the surface.
A larger quake followed: M2.6 15 km WNW of Ione, Oregon. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.0 (md), micro
- Local time
- UTC
- 1972-08-20 22:56:57 UTC
- Depth
- -0.7 km (-0.4 mi), shallow
- Epicenter
- 45.590° N, 120.014° 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 0.3 km horizontally, 0.1 km in depth
- Magnitude uncertainty
- ±0.22
- Depth from
- Operator assigned
- Station coverage gap
- 332°, 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: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.615 km WNW of Ione, Oregon · 19755 days ago · 7 km deep · 3 km away
- 2.120 km SW of Boardman, Oregon · 19751 days ago · 0 km deep · 18 km away
- 2.515 km WNW of Ione, Oregon · 19749 days ago · 0 km deep · 6 km away
Before
Earthquakes todayOregon earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10853828. Read Tue, Sep 22, 2026, 8:01 AM UTC.