Avalanche Advisory Archive Pre-2016

Date Issued:2011-03-12
Danger:1
Trend:3
Probability:3
Size:2
Problem:0
Discussion:

The National Weather Service Forecasts-

TODAY...PERIODS OF SNOW IN THE MORNING...THEN CHANCE OF SNOW IN THE AFTERNOON. SNOW ACCUMULATION AROUND 1 INCH. LOCALLY WINDY. HIGHS 28 TO 34. NORTHEAST WIND 10 TO 20 MPH. NEAR DOWNTOWN JUNEAU AND DOUGLAS...EAST WIND 15 TO 25 MPH WITH GUSTS TO 40 MPH IN THE MORNING.

TONIGHT...SNOW LIKELY. SNOW ACCUMULATION AROUND 1 INCH. LOWS
18 TO 24. EAST WIND 10 TO 15 MPH.

SUNDAY...MOSTLY CLOUDY. BREEZY. CHANCE OF SNOW. HIGHS AROUND 32. NORTHEAST WIND 25 MPH.

SUNDAY NIGHT...PARTLY CLOUDY. BREEZY. SLIGHT CHANCE OF SNOW.
LOWS 19 TO 27. NORTHEAST WIND 15 TO 25 MPH.

We have not received any new snow in the last 14 days.

We have had strong winds from 20-80 mph during most of that time.

There has been a great deal of scouring and also wind loading.

Spatial variability remains very high. Snow conditions will vary greatly from place to place.

The slabs in place are bonding well to the old snow surface and becoming harder and there is less loose snow available for transport to trigger the slide naturally.

We may start to see some new snow adding up in the next 36 hours. This new snow will be laying on a multitude of different snow surfaces. From windblown slab, to rock and ice, to surface and near surface faceting in some areas.

As this new snow comes in wind is expected as well. Even with small amounts of new snow this has the ability to start to build weakness.

Avalanche sizes are not expected to be large should they occur.

Danger levels are LOW at this time.

Tip:

Some great short training segments.

http://backcountryaccess.com/index.php?id=83#PowerPoint