Expecting the avalanche hazard to rise rapidly on Friday on all elevations and aspects as freezing level climbs to 3500 m and plenty of sun. Avalanche control planned for Icefields Parkway starting at 16:30 hrs on Friday.
Lawinenprobleme
Cornices
N
NE
E
SE
S
SW
W
NW
Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze
Wahrscheinlichkeit
Likely
Größe
1–2
Large hanging cornices will weaken with rising temperatures. Use caution traveling below or near them.
Loose Wet
N
NE
E
SE
S
SW
W
NW
Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze
Wahrscheinlichkeit
Very Likely - Certain
Größe
1–2
The freezing level is rising to 3500 m tomorrow. We are expecting to see loose wet avalanches on most slopes.
Deep Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze
Wahrscheinlichkeit
Very Likely
Größe
2–4
The forecasted hot sunny weather on Friday will be a trigger for this problem on all aspects and elevations.
Weather Forecast
Freezing level dipping to 1500 m tonight then soaring to 3500 m by noon Friday with clear skies. Good crust recovery forecasted Friday night with moderating temperatures through the weekend could make for good corn skiing.
Snowpack Summary
A melt freeze crust will form tonight but will deteriorate rapidly on all aspects and elevations on Friday afternoon as temperatures spike and with intense solar radiation. A persistent slab, 30 to 70cms thick, will be of greatest concern on Northerly aspects. Pockets of thin slab on lee aspects.
Avalanche Summary
Large (sz 3) slab avalanches on North alpine aspects starting to be seen. Old slab and loose wet avalanche activity to size 2.5, mostly on solar aspects observed by field teams along the Icefields Parkway on Wednesday.