Bollettino valanghe

Jasper

Dec 8 – 9, 2014Parks Canada
Vedi sulla mappa
Archiviato · scaduto 12 years ago

Pericolo valanghe

Mon
Tue
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

A storm is approaching and is forecast to hit the region on tuesday and intensify into Wednesday.  Conditions will deteriorate rapidly. 

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–3
    These slabs are found on exposed slopes and produced moderate to hard test results with failures in the facet layer near the bottom of the snowpack.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    Storm snow has evolved into a persistent slab mainly around treeline and sheltered alpine slopes. Widespread whumphing in open treeline areas.  Propagation from  whumphing is possible on steep unsupported slopes.

Weather Forecast

Snow will begin Monday evening becoming heavy by Wednesday with accumulations of 30 cm possible.  Winds will increase into the moderate range.  Temperatures will be warm with the freezing level reaching to 2200 m on Wednesday.  Precipitation will likely fall as rain at lower elevations.

Snowpack Summary

Warm temps are reaching into the alpine and are promoting settlement of last week's storm snow.  Isolated windslab can be found in exposed areas in the alpine. The main concern is the interface between the settled storm snow and several crusts near the bottom of the snowpack. This interface is producing widespread whumphing at treeline.

Avalanche Summary

No field patrols today.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Wednesday

Regioni coperte