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

Jan 9th, 2021–Jan 10th, 2021

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

Regions

Glacier.

Close calls are being reported as skiers and riders step out into higher consequence terrain. Watch your partners from a safe place and approach exposed features with caution

Weather Forecast

Sun and cloud today, nil precipitation and light SW wind. Tonight increasing SW wind. Tomorrow flurries of snow to 5cm and rising temperatures. Wind increases to strong SW Sunday night and Monday with 10cm of snow.

Snowpack Summary

A thin crust formed yesterday on S and W aspects at all elevations and surface hoar 5mm in the shade to treeline. 90cm of recent snow has begun to settle. Dec 26 Surface Hoar is preserved down 80 in sheltered areas at and below treeline. The Dec 7th surface hoar/crust/facet layer is down 1.5m. Crusts and facets persist at the base of the snowpack

Avalanche Summary

Several natural avalanches were observed yesterday to sz 2.5 mostly from solar aspects. Size 1-1.5s are catching people out in high consequence terrain in the park as well as nearby. Several skier accidentals were reported the backcountry around RMR on Wednesday to size 2.5 including one burial to the neck

Confidence

Due to the number of field observations

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.