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Avalanche Forecast

Archived

Apr 28th, 2021–Apr 29th, 2021

Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.

Regions

Little Yoho.

Minimal freeze overnight at tree line and below as we approach the 'All Melt, No Freeze' Spring conditions scenario, as the freezing level rise to 3000m on Thursday.

Click the "More Spring Conditions details" link for more info.

Weather Forecast

Thursday is forecasted to be mainly cloudy with a chance of snow flurries or rain. The freezing level will remain at 1800m Wednesday night and will rise up to 3000m on Thursday. Wind will be 20-60km/hr from the South West. For more details, see the Mountain Weather Forecast.

Snowpack Summary

Poor overnight crust recovery, weak crusts on all aspects up to 2000m. Crusts at higher elevations will gradually break down with daytime warming. 10-20cm of settled dry snow in high Northerly terrain. Isolated pockets of wind slab may exist in the alpine.

Avalanche Summary

No new avalanche activity observed or reported for the past few days.

Confidence

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.

Wet Slabs

Wet Slab avalanches are the release of a cohesive layer of snow (a slab) that is generally moist or wet when the flow of liquid water weakens the bond between the slab and the surface below (snow or ground). They often occur during prolonged warming events and/or rain-on-snow events. Wet Slabs can be very unpredictable and destructive.