Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Likely
- Dimensione
- 1–2.5
The new snow has come with strong winds at all elevations. Avoid overhead avalanche terrain during periods of heavy loading
Bollettino valanghe
Vedi sulla mappaJasper
Dec 30 – 31, 2018Parks Canada
Archiviato · scaduto 8 years ago
Pericolo valanghe
Mon
Tue
Alta quota
4 · Forte
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato
In sintesi
Icefields Parkway will remain closed overnight Saturday. Check Alberta-511 for details.
Problemi valanghivi
Persistent Slabs
NNEESESSWWNW- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible - Likely
- Dimensione
- 1.5–3
The new snow will fall on to settle snow from last week. Below this the interface with the old snow surface, buried up to a meter deep, is strengthening however, large triggers such as cornices have produced several releases recently.
Deep Persistent Slabs
NNEESESSWWNW- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible
- Dimensione
- 1.5–3.5
The base of the snowpack is weak and facetted. Likely trigger locations are around rocks, where cold air can penetrate to the base of the snowpack, and shallow snowpack locations.
Weather Forecast
New snow totaling 25cm has fallen over the day, tapering off overnight. Sunday, convective flurries are expected to add a further 10-12cm. Strong winds will continue into early next week. A detailed mountain weather forecast is available from Avalanche Canada.
Snowpack Summary
26cm of new storm snow getting transported aggressively by moderate to strong SW winds.
Avalanche Summary
Poor visibility through the Icefields and Wilson areas due to snow and strong winds. Evidence of a large avalanche cycle in the southern end of the bulletin region where snowfall amounts higher than forecasted.
Confidence
Due to the number of field observations