Northwest Avalanche Center

Observation: NWAC Forecaster

All Observations

Basic Information

Observation Details

Observation Date:
April 9, 2023
Submitted:
April 9, 2023
Observer:
NWAC Forecaster - Joe Dellaporta
Zone or Region:
Mt Hood
Location:
Lookout Mtn

Signs of Unstable Snow

Recent Avalanches? 
None Observed
Cracking? 
None Experienced
Collapsing? 
None Experienced

Media/Attachments

The crust was still supportable on skis, but not for long...
Rollerballs on steep slopes in the sun.
You cant see the wind.
Rain runnels
https://www.youtube.com/shorts/Dq1zGxPUJ-0

Advanced Information

Weather Summary

Cloud Cover:
Overcast
Temperature:
Above freezing°F
Wind:
Moderate , SW

It was a mild, drizzly day out there ahead of the atmospheric river. We did observe a couple short lived sun breaks around 1100, but overcast skies were the main story. Warming temps and rain made actively broke down the surface crust.

Snowpack Observations

The surface crust is breaking down at lower and mid-elevations due to rising freezing levels and rain. At 6000 ft this melt-freeze crust was still ski supportable, but not boot supportable anymore. The upper 15cm of the snowpack is now comprised of wet grains, with dry snow under this @ 6000'.

Steep test slopes felt sloppy, especially on aspects that faced south. Filtering sun allowed for rollerballs and pinwheels to shed off of steep, rocky terrain.

Lower elevations near the Little John Sno-Park are starting to melt out. We only encountered a few bare-spot along the road, but the coverage is getting thin in lower 1000 ft.

Avalanche Problems

Problem Location Distribution Sensitivity Size Comments
Wet Loose
Isolated
Specific
Widespread
Unreactive
Stubborn
Reactive
Touchy
D1
D1.5
D2
D2.5
D3
D3.5
D4
D4.5
D5
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