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Avalanche Forecast

Archived

Apr 23rd, 2019–Apr 24th, 2019

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

Regions

Glacier.

Watch for stubborn storm slabs at alpine elevations. Take the time to evaluate the upper snowpack before entering your line.

Weather Forecast

Freezing level of 2000m, little in the way of precipitation and moderate SW winds is the forecast today. Flurries tonight with 6cm expected and freezing level down to 1400m. A mix of sun and cloud for Wednesday/Thursday with freezing level rising to 2100m on Thursday.

Snowpack Summary

5cm of wet snow overnight at 1900m, 6mm of rain at 1300m. Little to no overnight surface crust recovery below treeline. The snowpack is isothermal BTL and thin areas at TL. Expect pockets of storm slabs over crust on high S aspects and potentially dry snow can still be found on Northerly aspects in the high alpine.

Avalanche Summary

No new avalanches recorded or reported in the last 24hrs. A widespread avalanche cycle to size 3 occurred last Friday. On Saturday skiers remotely triggered a size 2.5 slide on the Youngs Peak headwall that 3 people were involved in. All three were unhurt in the slide.

Confidence

Due to the number of field observations

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.

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.