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 1st, 2021–Feb 2nd, 2021

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

Regions

Kananaskis.

It's time to be head's up! Strong winds, warm temps and as much as 25cm of snow expected Tuesday. Avalanche hazard is trending to HIGH.

Confidence

Moderate -

Weather Forecast

Tuesday will be cloudy with temperatures between -2 and -5 and strong SW winds. The big unknown is the snowfall amounts, with forecasts ranging from 10 to 25cm. Let's hope it's 25cm!

Avalanche Summary

Visibility was somewhat limited today, but numerous loose dry up to size 1.5 were observed in Alpine and Treeline terrain on all aspects. Also, several wind slabs were observed up to size 2.5 in Alpine terrain on N, E and S aspects. These slabs appear to be 50 to 60cm deep on average.

Snowpack Summary

Another 30cm of new snow fell in the last 24 hours, bringing recent storm snow totals to between 60 and 70cm. So far this snow remains low density at lower elevations, but today at 2500m forecasters observed a change starting. The winds were moderate to strong from the SW and were quickly forming new surface wind slabs with some isolated cracking and whumpfing at ridge-crest. In addition, snowpack tests today indicate that all the recent storm snow is failing on the old wind slab surface down 60cm. Test results were variable ranging from very easy to moderate. Once the surface snow gains a bit more density, these new slabs will be quite sensitive to triggering.

Terrain and Travel

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Be careful as you transition into wind affected terrain.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Cornices may release remotely when approached.
  • Avoid exposure to slopes that have cornices overhead.

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.