M2.3 earthquake 4 km SW of Sandy, Oregon
A magnitude 2.3 earthquake struck 4 km SW of Sandy, Oregon on Wed, Oct 30, 1985, 7:53 AM PST (15:53 UTC), 20 km (12 mi) below the surface.
A larger quake followed: M3.0 3 km WSW of Molalla, Oregon. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.3 (md), micro
- Local time
- UTC
- 1985-10-30 15:53:10 UTC
- Depth
- 20.0 km (12.4 mi), shallow
- Epicenter
- 45.373° N, 122.303° 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 0.8 km horizontally, 1.3 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 114°
- Stations used
- 34
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 4 in the 30 days before it.
After
- 2.038 km S of Morton, Washington · 14930 days ago · -2 km deep · 94 km away
- 2.32 km SE of Chenoweth, Oregon · 14930 days ago · -1 km deep · 89 km away
- 3.03 km WSW of Molalla, Oregon · 14914 days ago · 24 km deep · 36 km away
- 1.84 km NE of Government Camp, Oregon · 14912 days ago · 1 km deep · 46 km away
- 1.528 km NW of Carson, Washington · 14908 days ago · 11 km deep · 66 km away
- 1.838 km NNE of Amboy, Washington · 14886 days ago · -2 km deep · 94 km away
- 1.537 km NNE of Amboy, Washington · 14886 days ago · -2 km deep · 93 km away
- 2.238 km NNE of Amboy, Washington · 14885 days ago · -1 km deep · 93 km away
- 1.66 km NE of Amboy, Washington · 14885 days ago · 16 km deep · 65 km away
- 1.59 km ENE of Kalama, Washington · 14879 days ago · 14 km deep · 80 km away
Before
- 2.42 km SW of Dallesport, Washington · 14943 days ago · -1 km deep · 89 km away
- 2.138 km S of Morton, Washington · 14949 days ago · -2 km deep · 94 km away
- 1.611 km NNE of La Center, Washington · 14955 days ago · 8 km deep · 69 km away
- 2.24 km S of Bingen, Washington · 14964 days ago · 7 km deep · 73 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10201988. Read Tue, Sep 22, 2026, 6:43 PM UTC.