Lawinenlagebericht

South Rockies

Apr 6 – 7, 2017Avalanche Canada
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Archiviert · abgelaufen 9 years ago

Lawinengefahr

Sat
Sun
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig
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Kernpunkte

Freezing levels and precipitation amounts are uncertain. Danger may be CONSIDERABLE during periods of heavy rain.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    Strong winds and light snow will form fresh wind slabs at higher elevations where the snow is still dry.

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    2
    Cornices are large and may fall off naturally with daytime warming or rain.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2
    Rain at lower elevations will cause loose wet avalanches in steep unsupported terrain features.

Snowpack Summary

Moderate rainfall is expected at least up to treeline on Friday. Rain falling on a warm snowpack has the potential to produce loose wet avalanches in any steep terrain. At higher elevations, new snow and wind will form fresh wind slabs and cornices will grow bigger. The snowpack is well settled and transitioning into spring conditions. The bottom third of the snowpack is composed of weak facets, but this deep persistent weakness has not been reactive for a few weeks.

Confidence

Moderate - Timing, track, or intensity of incoming weather system is uncertain on Friday

Weather Forecast

FRIDAY: About 5-15 mm of precipitation with strong southwest wind and snow line fluctuating between 1500 and 2000 m.SATURDAY: Mix of sun and cloud with isolated flurries, moderate southwest wind, freezing level up to 1900 m after overnight freeze.SUNDAY: Cloudy with a chance of getting clipped by a storm to the south, freezing level around 1700 m.

Avalanche Summary

Small loose wet avalanches were reported in the southeast part of the region on Thursday. On Wednesday, explosive control produced two small wind slabs in steep alpine terrain in the southeast part of the region. Small avalanches are expected on Friday with the incoming storm.

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