M3.4 earthquake 5 km NNE of Mount Angel, Oregon
A magnitude 3.4 earthquake struck 5 km NNE of Mount Angel, Oregon on Thu, Nov 25, 1999, 6:46 AM PST (14:46 UTC), 28 km (17 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.4 (Md, duration), minor
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1999-11-25 14:46:15 UTC
- Depth
- 27.8 km (17.3 mi), shallow
- Epicenter
- 45.117° N, 122.781° W
- Region
- Oregon
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 3.4 | Md, duration | Pacific Northwest Seismic Network | Preferred · Final · ±0.05 · 17 stations |
| 3.2 | mb, body-wave | USGS National Earthquake Information Center | Reviewed · 1 stations |
What happened
The USGS’s account of the effects of this earthquake.
Felt (V) at Lake Oswego and (IV) at Silverton, Oregon. Also felt at Beaverton, Canby, Clackamas, Corvallis, Gresham, Keizer, Milwaukie, Molalla, Newberg, Portland, Salem, Sandy, Tigard, Tualatin, West Linn, Wilsonville and Woodburn, Oregon. Felt as far as Brush Prairie, Washington.
From the USGS event page for uw10487948. U.S. Geological Survey text and figures are in the public domain.
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 0.8 km horizontally, 0.8 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 94°
- Stations used
- 49
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 1.67 km N of Amboy, Washington · 9785 days ago · 15 km deep · 99 km away
- 1.6Washington-Oregon border region · 9781 days ago · 8 km deep · 89 km away
- 2.56 km SW of Peoria, Oregon · 9770 days ago · 4 km deep · 87 km away
- 1.512 km NE of Woodland, Washington · 9765 days ago · 11 km deep · 96 km away
- 2.23 km ENE of Government Camp, Oregon · 9757 days ago · 4 km deep · 86 km away
- 1.83 km ESE of Molalla, Oregon · 9750 days ago · -1 km deep · 19 km away
- 1.65 km ENE of Scotts Mills, Oregon · 9750 days ago · 17 km deep · 16 km away
Before
Earthquakes todayOregon earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10487948 (also filed as usp0009j2p). Read Thu, Oct 1, 2026, 6:50 PM UTC.