Avalanche Forecast

Issued: Mar 19th, 2020 4:00PM

The alpine rating is low, the treeline rating is low, and the below treeline rating is low. Known problems include Loose Wet.

Avalanche Canada shorton, Avalanche Canada

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Warm sunny weather continues. Use increased caution when slopes and cornices warm up throughout the day.

Summary

Confidence

High - Confidence is due to a stable weather pattern; little change is expected for several days.

Weather Forecast

Clear dry weather continues until Monday.

THURSDAY NIGHT: Clear skies, calm, freezing level remains around 1700 m, treeline temperatures drop to +2 C.

FRIDAY: Sunny, light to moderate northwest wind, freezing level around 1700 m, treeline temperatures reach +6 C.

SATURDAY: Sunny, light to moderate northwest wind, freezing level climbing to 2000 m in the afternoon, treeline temperatures reach +8 C.

SUNDAY: Increasing clouds throughout the day, moderate to strong southwest wind, freezing level drops to 1300 m, treeline temperatures around +2 C.

Avalanche Summary

No new avalanches have been reported the past few days, although warm temperatures have likely resulted in natural wet loose avalanches in steep south-facing terrain. A few size 1-2 wind slab avalanches were human triggered over the weekend (see these MIN reports for more details), but they should be less reactive after several days of warm weather.

Snowpack Summary

Sustained above freezing temperatures for the past few days has resulted in moist snow on the surface. Crusts may form overnight, and shaded alpine slopes likely have hard wind slabs on the surface. The snowpack is well-settled. Depths are roughly 300-400 cm around 1200-1400 m and taper rapidly with elevation, with no snow below 700 m.

Terrain and Travel

  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Carefully evaluate steep lines for wind slabs.

Problems

Loose Wet

An icon showing Loose Wet

Watch for wet loose avalanches on steep sun-exposed slopes and remember cornices could become weak with daytime heating.

Aspects: South East, South, South West.

Elevations: All elevations.

Likelihood

Unlikely - Possible

Expected Size

1 - 1.5

Valid until: Mar 20th, 2020 4:00PM