Avalanche Advisory Archive Pre-2016

Date Issued:2016-02-07
Danger:2
Trend:2
Probability:3
Size:2
Problem:2
Discussion:

The National Weather Service Forecasts-

TODAY...LOCALLY WINDY THIS MORNING. RAIN AND SNOW. SNOW
ACCUMULATION TO 1 INCH. HIGHS AROUND 39. NORTHEAST WIND 15 TO 25 MPH SHIFTING TO THE SOUTHEAST 10 TO 20 MPH IN THE AFTERNOON. GUSTS TO 40 MPH IN THE MORNING NEAR DOWNTOWN JUNEAU AND DOUGLAS.

TONIGHT...RAIN AND SNOW LIKELY...EXCEPT RAIN LIKELY SOUTH OF TAKU INLET. LITTLE OR NO SNOW ACCUMULATION. LOWS AROUND 34. SOUTHEAST WIND 10 TO 15 MPH.

MONDAY...RAIN...MAINLY IN THE AFTERNOON. HIGHS AROUND 42. EAST
WIND 10 TO 15 MPH.

MONDAY NIGHT...RAIN. LOWS AROUND 37. SOUTHEAST WIND 10 TO 20 MPH.

The last week has left us just enough snow to build avalanche conditions on upper elevation slopes.

BOTTOM LINE: Avalanche Danger remains MODERATE to Considerable today. Human Triggered avalanches are possible. Natural avalanches are also possible during the high early day winds but not as likely.

Yesterday I was able to produce two skier triggered avalanches on two separate aspects. One was NNE facing and the was West facing. Both slabs fractured at about 30cm of depth. These were steep backcountry areas with no previous tracks or activity over the last few days. It appeared the new snow is starting to bond well to the old snow surface. What I was able to produce looked like a density change in the first layer of snow before the second days snowfall.

Be aware that with the continued winds today and a weak layer already in place danger remains.

Avoid steep open faces with terrain traps and greater consequences. Remember to always ride with a partner.

In general for the last two days things have started to stabilize.

Where temperatures were near freezing when the storm started they have fallen slightly over the last few days helping with stability. This morning the Tram summit is 28f while Eaglecrest is 31f at the base. 27f mid mountain and 26f on top.

We received 3mm of precip at the Mt Roberts Tram Summit which left 4cm of light new snow. Eaglecrest showed much the same with 4mm of precip leaving 4cm of new snow.

For the most part this is a light snowfall with cooling temperatures which will help with stability over time. Once again the concern remains in the density change from the first days snow.

This morning we have considerable winds on the tram summit blowing 15-25 out of the NNE with gusts to 30+. This is loading our urban avalanche starting zones. If this continues long enough we may build natural avalanche conditions. Natural avalanches are possible along the channel today but not likely. Should we see natural slides we do not expect them to be of significant size.

Some great skiing to be had out there but please use good habits and remember some danger persists.

ENJOY A GREAT DAY!

Tip:

Sidecountry Skiing = Backcountry Skiing

Sidecountry is defined as out-of-bounds, backcountry terrain that is accessed from a ski area. The close proximity to a ski area makes accessing these areas easier, but does not provide any safety as there is no avalanche hazard reduction or ski patrol services.