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Avalanche Forecast

Archived

Mar 22nd, 2019–Mar 23rd, 2019

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Sea To Sky.

Even if the skies are cloudy you should avoid slopes that have wet and mushy snow, especially at lower elevations with little overnight re-freeze. Check out this LINK to see how easy it is to trigger a loose wet avalanche.

Confidence

Moderate -

Weather Forecast

A change in the weather pattern is approaching. FRIDAY NIGHT: Cloudy with isolated flurries. Ridgetop winds moderate from the South and freezing levels 1400 m. SATURDAY: Cloudy. Freezing levels 1400 m and alpine temperatures -2. Ridgetop wind light from the South.SUNDAY: A mix of sun and cloud. Freezing levels 1300 m and alpine temperatures near -3. Ridgetop winds remain light.MONDAY: Cloudy with light snow 5-10 cm. Freezing levels 1700 m and alpine temperatures near -1.

Avalanche Summary

On Thursday, several loose wet avalanches up to size 1 were reported from steep solar terrain at lower elevations. Explosive control produced a size 2.5 loose wet avalanche on a southwest aspect between 1750-2050 m. It ended up triggering three slabs that failed at the ground. Active cornice control using explosives also produced a size 3 cornice failure which did not pull a slab avalanche from the slope below.Natural avalanche activity may start to slowly taper off with cooler temperatures this weekend. Human triggered avalanches are possible especially at lower elevations on southerly aspects due to a lack of re-freeze.

Snowpack Summary

Snow surfaces are variable. On higher North aspects (above 1700 m) you may find some dry, faceted snow. Some of this has been redistributed by southwesterly and northerly winds, potentially creating some isolated wind slabs. On solar aspects (East, South, West) at treeline and in the alpine the upper 10-30 cm will likely sport a firm crust with cooling temperatures. Below treeline the snow could remain moist or wet if it doesn't re-freeze. The snowpack has gone through a lot of change with the hot and sunny weather. The mushy snowpack will start to solidify and lock-up allowing for hard conditions and less avalanche activity, especially on the solar slopes.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.