Avalanche Advisory Archive Pre-2016

Date Issued:2012-03-10
Danger:3
Trend:2
Probability:3
Size:3
Problem:0
Discussion:

The National Weather Service Forecasts-

TODAY...SNOW SHOWERS LIKELY IN THE MORNING...THEN RAIN SHOWERS
LIKELY IN THE AFTERNOON. SNOW ACCUMULATION UP TO 1 INCH. HIGHS
AROUND 40. SOUTHEAST WIND 10 TO 15 MPH.

TONIGHT...RAIN SHOWERS LIKELY. SCATTERED SNOW SHOWERS LATE.
LITTLE OR NO SNOW ACCUMULATION. SNOW LEVEL 1300 FEET IN THE
EVENING. LOWS AROUND 32. SOUTHEAST WIND 10 TO 15 MPH.

SUNDAY...MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE MORNING THEN ISOLATED RAIN SHOWERS. HIGHS AROUND 38. EAST WIND 10 MPH.

Over the last 5 days we went through a fairly good sized winter storm cycle. We received 5\" of precipitation over the last 5 days. This left 2'2\" of new snow at the Mt Roberts Tram Summit Weather Station at 1800'. It only hit freezing for a very short period of time. The rest of the time was near freezing and just below.

It is fair to assume that we received even more snow at upper mountain elevations. The possibility exists for that 5\" or rain to have left 50\" of snow at higher elevations in places.

Winds today are from 20-30 out of our traditional SSE direction. During most of the storm they maintained this heading. We had winds from 30-60knots during a good part of the storm.

Recent avalanche activity has been widespread. Cross Bay on Thane Road had a large natural avalanche that came near to the Road. The Behrands Avalanche path slid several times from mostly lower elevation starting zones. The weak layers may still be present in the upper starting zones. The White Path had a small slide. Bathe Creek path that crosses the end of Evergreen Ave leading to the flume Trail had a large natural avalanche that left quite a bit of debris.

On Douglas Island there have also been many large natural avalanches. Fruit Bowl past East Bowl slid with a crown up to 6' deep. Fish Creek Knob also had a large natural avalanche with a crown in excess of 6'.

The Eaglecrest Ski Patrol continues to get large avalanche releases to explosives in area. East Bowl yesterday produced many avalanches in excess of 2' deep.

Things are slowly stabilizing over time and will continue to stabilize. Yet this weak layer is widespread and quite deep in the snowpack now in places. It may take a little while longer to heal.

With not much precipitation in the forecast today avalanche danger is reduced to Considerable/ to Moderate.

Natural avalanches possible, yet not so likely.

Potentially destructive avalanches may come near or reach developed areas should they occur.

Human triggered avalanches probable.

Be extra careful on steep open faces, on steep convex rolls, on unsupported convex breakovers, near or around cornice lines. Be cautious of terrain traps. Limit your exposure to avalanche prone areas.

Be sure to use good practices with spotters using avalanche transceivers, probes, and shovels. Ride from island of safety to island of safety one at a time with spotters in place. Dangers are lowering slowly. Patience is a virtue!!!

Ski a safer line today and live to ride another day!!!

Tip:

Always follow safe travel and descent protocols:

?Only expose one person at a time.
?Wear releaseable bindings.
?Keep your pole straps off your wrist.
?Move from island of safety to island of safety.
?Never travel above another person.
?Always move a safe distance away from the base of a slope that you just skied.
?Watch your partners and signal when you are clear of the slope.

Be prepared for the worst!

An avalanche victim's ONLY chance of survival is rescue by his or her party