Boletín de aludes

South Rockies

Apr 20 – 21, 2014Avalanche Canada
Ver en el mapa
Archivado · caducó 12 years ago

Peligro de aludes

Tue
Wed
Alta montaña
2 · Moderado
Límite del bosque
1 · Débil
Bajo el límite
1 · Débil
Abrir el mapa completo

Lo esencial

This bulletin was issued using very limited field data. Please send your observations to [email protected] out this video and blog post for more insight into managing spring conditions.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–5
    Large cornices loom above many alpine slopes and will become weak with daytime warming. Give cornices a wide berth while traveling on or below ridges.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–3
    Forecast sunny breaks and warming on Monday will promote pushy loose wet avalanche activity. Watch for increased reactivity in areas where new snow is exposed to solar radiation for the first time.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely
    Tamaño
    3–6
    The potential for deep persistent slabs will increase when the sun is shining, temperatures are warm or when rain falls. Minimize exposure to big alpine slopes when things are warming up.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Monday: A mix of sun and cloud becoming overcast in the afternoon with light flurries / Moderate southerly winds / Freezing level at about 2000mTuesday: Light to moderate wet snowfall at higher elevations / Moderate southerly winds / Freezing levels are uncertain, although some models are indicating up to 2500mWednesday: Mainly overcast skies with light flurries / Moderate southerly winds / Freezing level at about 1800m

Avalanche Summary

Fairly widespread loose wet avalanche activity was reported on Saturday. The avalanche activity occurred in response to solar radiation and warm temperatures.

Snowpack Summary

Note: We have very little recent data to base this summary on. If you're out in the mountains ask other locals about the current conditions and spend some time making snow and weather observations to help assess local hazard. Prior to the weekend the region received up to 40cm of new snow with the snow line hovering between 1500 and 1700 m. This recent snowfall overlies a melt-freeze crust in many areas. My best guess is that stubborn wind slabs exist in high, north facing terrain while warm temperatures and solar radiation have created moist surfaces everywhere else. If there is a good overnight freeze these surfaces will exist as a hard crust.The deep facet/crust persistent weakness buried at the beginning of February (now down up to 80-100+ cm) should stay on your radar, especially on all alpine slopes during sunny periods. Any activity at this interface would be large and destructive. Also, give large sagging cornices a wide berth when traveling on or below corniced ridges.

Regiones cubiertas