Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Feb 23rd, 2021–Feb 24th, 2021

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

Regions

Glacier.

Pay attention to overhead avalanche paths!!

80cm in 3 days, strong to extreme winds, and mild temps have created a reactive storm slab.

Numerous avalanches detected overnight indicate the danger level at higher elevations is still high.

Weather Forecast

Unsettled wx for the next couple of days, followed by a Thurs storm.

Today: Cloudy with sun and isolated flurries, trace amounts, Alp high -12*C, mod W winds

Wed: Cloudy with sun and isolated flurries, trace amounts, Alp high -12*C, mod W winds

Thurs: Snow, 20cm, Alp high -9*C, strong SW winds

Snowpack Summary

80mm of precip in the last 3 days, extreme S'ly winds, and mild temps have created a widespread surface storm slab. Thickness of the new slab will vary from 50-100cm. This sits on the Feb 14 drought interface, which is predominantly a wind crust in exposed areas near the height of the pass, and buried windslabs and facets as you move East and West.

Avalanche Summary

Numerous sz 3 to 4 artillery-controlled avalanches were observed yesterday, and a continuing natural avalanche cycle overnight to sz 3.5 has kept the valleys filled with a rumbling sound. 23 avalanches were registered by remote sensors last night, indicating the mountains are still shedding even with the cooler temps.

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 Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.