Bollettino valanghe

South Coast

Mar 27 – 28, 2016Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 11 years ago

Pericolo valanghe

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

In sintesi

Conservative route selection is essential for safe back country travel. Be alert for changing conditions at all elevations.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–3
    Recent storms have likely built wind slabs on the north and east sides of ridges at tree line and above.  These may be reactive and touchy for a few days.  As the high pressure moves into the area wind slabs may form on south slopes below ridge tops.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–5
    Cornices will remain a problem well into the spring as temperatures heat up.  Steer well clear of cornice features

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2
    Warm temperatures and solar radiation will keep loose-wet avalanches in the forecast for some time.  Pay close attention to temperatures and solar input.

Confidence

Moderate - Timing or intensity of solar radiation is uncertain

Weather Forecast

The cold front passing through the South Coast Inland region should be out of the area by late this evening with a few scattered showers lingering tomorrow morning. A ridge of high pressure will move into the forecast area by Monday afternoon and is forecast to stay for the remainder of the week. MONDAY: Cloudy with scattered showers early in the day, freezing level at 1100m early in the day then climbing to 1800m by early afternoon. Winds will be from the north as the high pressure system moves in. TUESDAY: Freezing level early tuesday morning will be the low for the next few days at 1600 m. Temperatures will rise close to 2500 m. Winds will be from the north. No precipitation in the forecast. WEDNESDAY: Sunny skies with possibility of high overcast, freezing level forecast to climb to 2700 m., no precipitation, winds continue from the north.

Avalanche Summary

Reports from yesterday are of wind slab activity up to size 1.5 Loose-wet avalanches up to size 1.5. , and everyone is concerned with possible cornice failures

Snowpack Summary

5 to 10cm of recent storm snow overlies the last pulse of settled snow from yesterdays storm. All of the recent storm snow is sitting on a variety of crusts on all aspects except perhaps north above 2000m. Once again, it appears that slightly more snow fell in the south of the region where they received 10 to 15 cm of snow. The storm featured moderate south/southwest winds that have most likely formed wind slabs on lee slopes around treeline and above. Below the new snow, the snowpack is generally well-settled throughout with no notable persistent weaknesses, however, cornices are are reported to be huge and fragile.  Be aware that as the high pressure comes into the region the winds will shift and be from the north.  This could lead to reverse wind loading and build wind slabs on the south aspects below ridge tops.

Regioni coperte