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Avalanche Forecast

Archived

Feb 8th, 2012–Feb 9th, 2012

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Northwest Inland.

Confidence

Good - -1

Weather Forecast

Thursday: Snow amounts up 5-10cm late in the day. Ridgetop winds 40-50km/hr from the SE. Freezing levels near 700m. Alpine temperatures near -3. Friday: Snow amounts near 5cm. Ridgetop winds 20-30km/hr from the South. Alpine temperatures near -9. Freezing levels 600m. Saturday: Mainly dry conditions. Ridgetop winds moderate from the SW. Freezing levels near 1000m. Another frontal system likely to move in by Sunday bringing light flurries.

Avalanche Summary

No new avalanches have been reported.

Snowpack Summary

Recently, warm temperatures created moist surface snow on sunny aspects and on all aspects at low elevations. Where a re-freeze has occurred, a crust now exists. Surface hoar (5mm) has been forming on that crust at treeline and below. Recent storm snow appears to bonding well. A facet layer which formed in mid-January has gained strength. It showed hard, resistant planar results in a compression test at treeline in the Hankin area on Sunday.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.