Avalanche Advisory Archive Pre-2016

Date Issued:2010-12-12
Danger:1
Trend:3
Probability:2
Size:1
Problem:0
Discussion:

The National Weather Service Forecasts-

TODAY...MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. PATCHY FOG IN THE MORNING. HIGHS AROUND 32. LIGHT WINDS BECOMING NORTH 10 MPH IN THE AFTERNOON.

TONIGHT...CLOUDY. CHANCE OF SNOW. LOWS 22 TO 30. NORTH WIND
10 MPH.

MONDAY...SNOW. SNOW ACCUMULATION 1 TO 3 INCHES. HIGHS AROUND 31. NORTHEAST WIND 10 MPH.

With this last weeks warm weather, the rain and heavy dense snow from over last weekend the snowpack had settled and bonded quite a bit.

There are still multiple weak layers further down in the snowpack but the heavy dense snow above them appears to be supportive at this time. Be cautious as new loads are placed on this already weak layer.

With several inches of new snow deposited yesterday, during a period where temperatures came up by an average of 5 degrees, additional weakness has been placed in the snowpack.

Look to see areas of wind loading as the snow deposits came in accompanied by winds of 10+ MPH throughout most of the cycle.

With very little snow on Mt Juneau in the urban starting zones avalanche danger is LOW at this time.

Please remember this is not a backcountry forecast.

Please be aware that fieldwork continues to show multiple weak layers in the snowpack and backcountry danger levels could be considerably higher especially as this new snow comes in with the wind loading.

Tip:

Remember during periods of snow fall. Rising temperatures place heavy dense snow above the looser lighter snow that fell at cooler temperatures.

Common signs of instability include rising temperatures throughout a storm cycle.