Bollettino valanghe

Kananaskis

Feb 13 – 14, 2013Alberta Parks
Vedi sulla mappa
Archiviato · scaduto 14 years ago

Pericolo valanghe

Fri
Sat
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Recent snow and extreme NW winds are creating storm slabs that are sensitive to human triggering. This new snow has buried a wide variety of layers that will give inconsistent shear results. Evaluate the snowpack carefully.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–4
    Previously formed  hard wind slabs are now buried 10 to 40cm deep in alpine and treeline areas. Shallow snowpack areas and steep convex features are potential triggering spots for this buried wind slab.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–4
    Storm slab development is on-going on lee and cross loaded features in alpine and treeline areas. With the extreme NW winds these slabs extend far downslope on E and S aspects and will be sensitive to human triggering.

Confidence

Fair - Due to limited field observations

Weather Forecast

NW winds will continue on Thursday, and will increase in speed through the day. No precipitation is expected and alpine temperatures will range from -18 to -6 degrees.

Avalanche Summary

Nothing new, but observations were limited.

Snowpack Summary

Up to 12cm of new snow at treeline in the past 24hrs. Storm slab development in alpine and treeline areas with slabs between 20 and 30cm deep. Previously formed hard slabs that are widespread on NW through S aspects are now well hidden under the new snow. Weak and facetted snowpack remains at lower altitudes.

Regioni coperte