Avalanche Advisory Archive 2016 – 2018

Date Issued:2017-03-05 06:32:30
Danger:4
Primary Trend:2
Primary Probability:3
Primary Likelihood:4
Primary Size:2
Primary Description:

With very light snow available for transport and winds from 15-70 over the last few days windloading is our primary concern.

We have seen a great deal of both natural and human triggered activity. Recognizing this we know the traps are set in the backcountry... the only question is who will be the mouse...

Choose your terrain wisely. These slabs will become hard and slowly stabilize over time. But danger remains today...

Secondary Trend:1
Secondary Probability:1
Secondary Likelihood:2
Secondary Size:1
Secondary Description:

The loose dry snow is starting to stabilize over time. Recognize that during the storm we saw a great number of loose dry sluffs. Even after the storm a little snow falling off of trees or rocks was enough to entrain a great deal as it continued down steep faces.

With the sun on the slopes today recognize that we may see some loose dry sluffing as snow cleans off of trees and rock faces. This is stabilizing over time... but it is important to recognize these loose dry sluffs can also be the trigger for a much larger storm slab in places.

Discussion:

The National Weather Service Forecasts-

Today- Mostly sunny. Highs around 21. Northeast wind 10 to 20 mph.

Tonight- Partly cloudy. Lows 7 to 15...except 4 below to 4 above zero in wind sheltered areas. Northeast wind 10 to 15 mph...except northeast wind 15 to 25 with gusts to 40 mph near downtown juneau and douglas.

Monday- Mostly cloudy. Highs around 20. North wind 15 to 25 mph. Wind chill to 20 below in the morning.

Temperatures remain quite cold around the region with Eaglecrest showing 7 at the base. 6f at mid mountain and 3f on top. The Tram is a little warmer at 6f.

Winds continue to blow and load our local slopes. Winds this am from 15-25 continue to move this light snow that was deposited late in the week.

We have seen a great deal of both natural and human triggered avalanches over the last 4 days. With continued windloading today natural avalanches remain possible and with this widespread weak layer and recognizing all the activity we have had human triggered avalanches remain probable.

This weakness is widespread and although conditions are far more dangerous in windloaded areas it is important to realize avalanches have been spotted on most every aspect.

With continued winds in the forecast avalanche danger will remain... yet the longer the winds continue without new snow the less there is available for transport which will help us start to build some stability over time.

These slides have been fairly shallow for the most part and yet there are deeper weak layers present. We have the potential for larger avalanches especially in wind loaded areas.

Please continue to be conservative. Snowmobilers, Skiers, Snowboarders... have all triggered slides in the last 3 days. Choose your terrain wisely and do not overly expose yourself to the terrain in avalanche prone areas.

Be safe out there and have a great day.

Tip:

REMEMBER WE DONT RIDE AVALANCHE TERRAIN WITHOUT AN AVALANCHE TRANSCEIVER AND A SHOVEL>>> AS WELL AS A WELL TRAINED PARTNER WITH THE SAME TO PROTECT US AS WE PROTECT THEM>

we have seen a few local folks riding out slides over the last few days. But the question is... did they have all the gear they needed? did they have a spotter and partner?? or did they get lucky???

Please folks remember good habits and live to play another day.

Forecaster:Tom Mattice