Avalanche Advisory Archive Pre-2016

Date Issued:2011-02-01
Danger:3
Trend:4
Probability:3
Size:2
Problem:0
Discussion:

The National Weather Service Forecasts-

TODAY...WINDY...RAIN. HIGHS AROUND 42. SOUTHEAST WIND 15 TO 25
MPH WITH GUSTS TO 40 MPH IN THE MORNING.

TONIGHT...RAIN. LOWS AROUND 37. SOUTHEAST WIND 15 MPH.

WEDNESDAY...RAIN. HIGHS AROUND 39. SOUTHEAST WIND 10 TO 15 MPH.

WEDNESDAY NIGHT...RAIN. LOWS AROUND 37. SOUTHEAST WIND 10 TO
15 MPH.

We received one inch of new snow at tram summits. Higher accumulation totals may be seen higher on the mountains. Eaglecrest UAS snowsite is showing 3 inches.

Temperatures are above freezing at tram elevations and will continue to warm throughout the morning.

We will see continued precipitation for the next several days.

Look to see this little new snow cleaning itself off of trees, rocks, and steep open pitches as it continues to gain weight with todays precipitation.

Slide sizes are not forecast to be large today.

With warming temps and continued rainfall, the longer these conditions persist the more we become concerned with the deeper weak layers in place.

HAVE A GREAT DAY>

Tip:

Point Release - Loose Snow Avalanches - Sluffs:

Loose snow sliding down a mountainside is called a loose snow avalanche. Small loose snow avalanches are called Sluffs.

Loose snow avalanches usually start from a point and fan outward as they descend, and because of this they are also called ?point releases.? Very few people are killed by loose snow avalanches because they tend to be small and they tend to fracture beneath you as you cross a slope instead of above you as slab avalanches often do. The avalanche culture tends to minimize the danger of loose snow avalanches, sometimes calling them \"harmless sluffs.\" But, of course, this is not always the case. Houses have been completely destroyed by \"harmless sluffs,\" and if caught in one, it can easily take the victim over cliffs, into crevasses or bury them deeply in a terrain trap such as a gully. Most of the people killed in sluffs are climbers who are caught in naturally-triggered sluffs that descend from above--especially in wet or springtime conditions.

Sluffs can actually be a sign of stability within the deeper snow when new snow sluffs down without triggering deeper slabs. Sluffs are usually easy to deal with but slabs are definitely not.

Look to see much of todays activity in the form of point release avalanches as the new snow falls off of rocks, trees, and steep open pitches it will gather mass and fan out as it releives stress by coming down the mountain.