Banff Yoho & Kootenay National Park Avalanche Forecast
Issued: Mar 10th, 2021 4:00PM
The alpine rating is Persistent Slabs., the treeline rating is , and the below treeline rating is Known problems include
Cold temperature and generally light winds will keep the danger LOW for one more day. New snow is accumulating in different amounts in different valleys (spring) so pay close attention to local accumulations where the alpine danger could be MODERATE.
Up to 10 cm expected in some areas by Thursday morning before it clears up and becomes a beautiful day. Sunny with cool temps (-20 to -5) through the day and relatively light winds. Temperatures will warm up for the weekend with freezing levels expected to reach 2500 m on Saturday.
Fresh snow in spotty areas from spring squalls, but mostly firm surface crust on south aspects up to at least 2600 m with softer snow found on north aspects. Minimal recent wind effect at higher elevations except in steep, alpine gullies. Profile at 2200 m today showed the Feb. 19 and Jan. 27 facets in the upper meter but no results on column test.
No new avalanches reported today except sluffing in alpine gullies with the short storm. On Tuesday, several large persistent slabs were reported in high north aspects and we assume these were triggered by large cornice falls.
This problem continues to linger and should be considered on alpine northern aspects where it appears large cornices can be the trigger. This means you should also watch your exposure to slopes overhead when on north aspect terrain.
- Pay attention to overhead hazards like cornices which could trigger the persistent slabs.
Aspects:North, North East, North West.
Valid until: Mar 11th, 2021 4:00PM
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