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ARCHIVED - Forecasts expire after 24 hours.
Issued
Fri, April 11th, 2014 - 7:00AM
Expires
Sat, April 12th, 2014 - 7:00AM
Forecaster
Kevin Wright
Avalanche risk The Bottom Line

Avalanche danger will be  LOW  today at all elevations and all aspects.  There is a possibility of causing minor loose snow sluffing in steep terrain.  Afternoon temperatures are expected to reach into the high 30s with sunny skies, so wet activity is possible on sun exposed slopes late in the day.

Fri, April 11th, 2014
Alpine
Above 2,500'
1 - Low
Avalanche risk
Treeline
1,000'-2,500'
1 - Low
Avalanche risk
Below Treeline
Below 1,000'
1 - Low
Avalanche risk
0 - No Rating
1 - Low
2 - Moderate
3 - Considerable
4 - High
5 - Extreme
Avalanche risk Avalanche risk Avalanche risk Avalanche risk Avalanche risk
Travel Advice Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features. Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern. Dangerous avalanche conditions. Dangerous avalanche conditions. Very dangerous avalanche conditions. Travel in avalanche terrain not recommended. Extraordinarily dangerous avalanche conditions. Avoid all avalanche terrain.
Likelihood of Avalanches Natural and human-triggered avalanches unlikely. Natural avalanches unlikely; human-triggered avalanches possible. Natural avalanches possible; human-triggered avalanches likely. Natural avalanches likely; human-triggered avalanches very likely. Natural and human-triggered avalanches certain.
Avalanche Size and Distribution Small avalanches in isolated areas or extreme terrain. Small avalanches in specific areas; or large avalanches in isolated areas. Small avalanches in many areas; or large avalanches in specific areas; or very large avalanches in isolated areas. Large avalanches in many areas; or very large avalanches in specific areas. Very large avalanches in many areas.
Avalanche Problem 1
  • Normal Caution
    Normal Caution
Normal Caution
Normal Caution means triggering an avalanche is unlikely but not impossible.
More info at Avalanche.org

Today looks like the last day of sunny weather before clouds, snow and rain take over.  Get out and enjoy it while you can.  

Overall stability is excellent.  At road elevation only a couple inches of snow from early in the week are on top of a supportable crust.  The higher up you get, the more soft snow you will find.  Shaded aspects seem to be holding the softest snow, and direct south has more variable crust to contend with.  

Yesterday it was possible to initiate low volume sluff in steep terrain.  (see photo below)  The ~8 inches of soft faceting snow tumbles away easily and will entrain snow below if the slope angle is around 40 degrees or steeper.  The density of this layer is so light that even getting “caught” by it wouldn’t be much of a problem. 

Warmer temperatures today with very little wind could start causing some wet avalanche activity late in the day.

 

Weather
Fri, April 11th, 2014

The last snowfall was on Tuesday when 6-8 inches fell around Turnagain Pass and Girdwood.  Since then temperatures have stayed fairly cold, and generally below freezing.  

Today looks like another brilliant sunny day.  Expect warmer temperatures.  Overnight lows have already stayed about 10 degrees warmer than the last couple nights.  Daytime highs are expected to break the freezing mark and reach the high 30s.

Clouds tonight will lead to a chance of rain and snow for the weekend.  The general pattern will be changing from sunny and stable to unsettled.

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This is a general backcountry avalanche advisory issued for Turnagain Arm with Turnagain Pass as the core advisory area. This advisory does not apply to highways, railroads or operating ski areas.