Bulletin d’avalanche

Waterton Lakes

Apr 16 – 19, 2022
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Archivé · expiré 4 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

5-10 cm more snow is expected Saturday night before switching back predominant to the SW flow.

As freezing levels rise Monday and Tuesday watch for pin wheeling and surface snow becoming moist. Hazard will increase with temperatures.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Our predominant SW winds for the area will be back Sunday, 15-25 cm will be redistributed into windslabs in lees. Keep an eye out for lingering pockets of small of reverse loaded windslabs from the last week of variable N-E winds.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    1–2.5

    As temperatures and freezing levels rise Monday and Tuesday cornices will weaken with day time heating. Pay attention to over head hazard and minimize time below cornices.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    As freezing levels rise Monday, Tuesday watch for signs surface snow is becoming moist. Exercise caution in steep slopes, confined areas and terrain traps.

Weather Forecast

Tonight: Flurries, accumulating 5-10 cm.

Sun: Mix of sun and cloud with isolated flurries. ALP high -2. Light gusting moderate SW winds. Freezing levels 1600m.

Mon: Cloudy with isolated wet flurries. ALP high +4. Light gusting strong SW winds. FL 2000m.

Tues: Cloudy with isolated wet flurries. ALP high of 0. Moderate gusting extreme SW winds. FL 1800m

Snowpack Summary

10 cm of soft snow found on polar aspects and in sheltered areas on Rowe Peak. Below 1900m snow surface is a 3cm breakable melt freeze crust. Variable N-E winds have redistributed snow into isolated windslabs in ALP. This overlies a rain crust to mountain top. Well consolidated mid and lower snowpack. HS 250-300 cm near the continental divide.

Avalanche Summary

Few loose dry avalanches to size 1 with solar input Thursday and Friday. No new avalanches reported on Saturday. Please report any observations to the Mountain Information Network we really appreciate the information as neighboring operations are shutting down for the season.

Confidence

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

Régions couvertes