Avalanche forecast

Mt Hood

Feb 13 – 14, 2015Northwest Avalanche Center
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Avalanche danger

Sun
Alpine
1 · Low
Treeline
1 · Low
Below
1 · Low

Highlights

It is a stretch to find a primary avalanche problem Saturday, but some sunshine later in the day, may make shallow wet snow avalanches possible. 

Avalanche problems

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely
    Size
    1

Detailed Forecast

A few showers early Saturday should give way to mostly cloudy conditions later Saturday and cooler temperatures. The cooler temperatures should limit melt and weakening of surface snow and may allow surface snow and form a crust at upper elevations. This should limit the potential for wet snow avalanches. 

Loose wet avalanches are unlikely Saturday due to the cooling, some some shallow wet snow may persist.    

As a result of the overall low snowpack, especially below treeline, watch for terrain hazards such as open creeks, partially covered rocks and vegetation.

Snowpack Discussion

The latest warm and moist southwesterly flow to impact the Pacific Northwest brought less rain to Mt. Hood compared to areas in the WA Cascades late last week. This led to further overall snowpack melt at lower elevations.   

The last frontal system crossed the south Cascades late Monday. This caused strong winds and heavy snow in the above treeline zone at Mt Hood.

A cooling storm Monday through early Tuesday deposited 15 inches of new snow at 6600 feet at Mt Hood Meadows. Avalanche control gave numerous size 1-2 wind and storm slab avalanches on lee slopes but with limited propagation. Similar wind slab concerns were reported on lee east aspects west of Timberline Tuesday on the NWAC observation page.  

These storm and wind slabs quickly stabilized under warming temperatures and sunshine and no other storm avalanches have been reported over the past few days. 

The mid and lower snowpack at Mt Hood should consist of layers of stable consolidated rounded grains or melt forms and crusts from multiple warm periods this winter.

Regions covered