Avalanche Forecast
Issued: Apr 4th, 2017 3:49PM
The alpine rating is Storm Slabs and Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeWe're into a daily melt-freeze cycle. Be alert to changing snow conditions as the snow warms up.
Summary
Confidence
Moderate - Timing or intensity of solar radiation is uncertain
Weather Forecast
WEDNESDAY: Increasing cloud with light snow/rain in the evening, strong southwest wind, freezing level climbing to 2000 m after an overnight refreeze.THURSDAY: Mostly cloudy with light amounts of snow/rain, moderate southwest wind, freezing level up to 2200 m with little overnight refreeze.FRIDAY: Mostly cloudy with about 5 cm of wet snow later in the day, moderate southwest wind, freezing level holding at 2200 m.
Avalanche Summary
On Tuesday, several natural loose wet avalanches were observed in steep south-facing terrain (size 1). Increasing cloud cover will decrease the likelihood loose wet avalanches on Wednesday, but storm slabs and cornices remain a concern at higher elevations.
Snowpack Summary
The snowpack has entered a daily melt-freeze cycle. Hard crusts form overnight and become moist surface snow during the heat of the day. The exception is north-facing alpine terrain, where dry snow and isolated wind slabs may exist. The December facets and November rain crust are buried deep, but have not been reactive for a few weeks.
Problems
Storm Slabs
Storm slabs may still be reactive on steep convexities and on wind loaded terrain features at higher elevations where the snow is still dry.
Be alert to conditions that change with elevation.Use ridges or ribs to avoid pockets of wind loaded snow.Use caution on open slopes and convex rolls
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Cornices
Cornices are large and may fall off naturally with daytime warming.
Extra caution needed around cornices with current conditions.Cornices become weak with daytime heating, so travel early on exposed slopes.
Aspects: North, North East, East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 5th, 2017 2:00PM