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Avalanche Forecast

Archived

Feb 1st, 2019–Feb 3rd, 2019

Alpine
Natural and human triggered avalanches likely.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Vancouver Island.

Travel & Terrain Advice

Avoid all travel in avalanche terrain when the danger ratings are high. Extreme caution, very careful snowpack evaluation, conservative decision making and cautious route finding are a must when traveling in terrain at a considerable danger rating.

Avoid wind loaded aspects and cross-loaded features at all elevation bands during and after the storm Thursday night into Friday. Give the new snow time to bond and settle to the old surface before getting GNAR dude!

Study the bond of the new snow to the crust it will fall on.

Avalanche Summary

A few lose wet avalanches up to size one and some pinwheeling on steep slopes were observed as our spring conditions persisted over the past three days.

Snowpack Summary

Well enough with the spring skiing already! Bring back the winter.

Snowpack Details

Surface: A thin crust has formed on solar aspects, freezing overnight and melting during the day. Upper: 20-50 cm of moist snow bonding well to a thick buried crust. Mid: well settled. Lower: well settled

Past Weather

The very warm temperatures have slowly begun to drop to normal over the past three days. Winds have been calm to light from the SW. There has been no new snow fall but the mountains did see a very light drizzle of rain Thursday.

Weather Forecast

Friday: 20 to 50 cm of new snowfall, temp around 0 degrees, winds strong SW overnight Thursday easing to moderate SW during the day Friday, freezing level around 1200 m. Saturday: 0 to 3 cm of new snow, temp dropping to -6 to -9, winds light NW-SW, freezing level 800-300 m. Sunday: 2 to 10 cm of new snow, temps taking a big dip -9 to -11, winds light SE, freezing level down to sea level. Brrr!

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.