Boletín de aludes

South Rockies

Apr 23 – 24, 2022Avalanche Canada
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Archivado · caducó 4 years ago

Peligro de aludes

Mon
Tue
Alta montaña
2 · Moderado
Límite del bosque
1 · Débil
Bajo el límite
1 · Débil

Lo esencial

With a sunny spring day, check for good overnight re-freeze and make sure to be off slopes before they turn mushy or wet.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–3

    Cornices are large and looming at this time of year. Any cornice release could be catastrophic. 

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2

    Use caution on sun-exposed slopes when the sun is shining. Relatively warm air and sun can pack a punch, causing loose wet avalanches that may entrain recent snow and travel far.

    Keep in mind that any snowpack can quickly loose strength when heat penetrates to deeper layers for the first time. Check for good overnight recovery - avoid slopes that do not get an overnight re-freeze.

Confidence

High - Uncertainty is due to the timing or intensity of solar radiation and its effect on the snowpack.

Weather Forecast

SATURDAY NIGHT: Cloudy with isolated flurries and risk of thundershower, 10 km/h west wind, alpine low temperature -6 C, freezing level falling below 1600 m.

SUNDAY: Mostly clear skies, 10-20 km/h southwest wind, alpine temperature +6 C, overnight freeze and daytime freezing level rising to 2500 m.

MONDAY: Cloudy with sunny breaks and isolated wet flurries, west wind gusting to 50 km/h, alpine high temperature +6 C.

TUESDAY: Wet flurries, 5-10 cm. West wind gusting to 30-50 km/h, alpine high temperature +1 C, daytime freezing level rising to 2300 m.

Avalanche Summary

We have not received reports of avalanche observations in the past few days.

Please consider posting your observations to the Mountain Information Network to supplement our data stream and help fellow recreationists.

Snowpack Summary

Sun and warm temperatures have moistened the snow up to 2300 m and all sun-exposed slopes. Cold, dry snow persists on more north-facing and shaded aspects in the alpine; in these areas use caution entering steep, lee terrain features below ridges, where wind slabs could be found. At ridge top, remember that cornices are large and looming.

Keep in mind that any snowpack can quickly loose strength when heat penetrates to deeper layers for the first time. Check for good overnight recovery - avoid slopes that do not get an overnight re-freeze.

Terrain and Travel

  • Cornices often break further back than expected; give them a wide berth when traveling on ridgetops.
  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

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