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Archived

Avalanche Forecast

Jan 6th, 2018–Jan 7th, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Northwest Coastal.

Uncertainty exists with forecast amounts of snow: Adjust your terrain use to match the storm snow totals in your area.

Confidence

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

Weather Forecast

We'll see a return to a more seasonal active weather pattern, with modest amounts of snow by Monday afternoon.  SUNDAY: Snow. 10-15 cm accumulation / Moderate south wind / Alpine temperature -3 / Freezing level 600mMONDAY: Snow. 10-15 cm accumulation / Moderate south west wind / Alpine temperature -2 TUESDAY: Isolated flurries / Moderate north west wind / Alpine temperature -4

Avalanche Summary

In the south of the region, recent avalanche activity has been reported as thin storm slab avalanches to size 1 along with isolated wind slab avalanches on east aspects in the alpine and at tree line.

Snowpack Summary

In the south of the region, recent warming, some rain/freezing rain and daily snowfall of 5 -10 cm has begun to build a thin storm slab. Above tree line the new snow has been redistributed by primarily south - west winds. There are some lingering wind slabs, found on a variety of old surfaces including a thick melt-freeze crust that formed in mid-December. In the north of the region there has been 20-40cm of storm snow since New Year's eve, with moderate to strong southerly winds. Warming temperatures and forecast snow are expected to form touchy storm slabs at all elevations. Danger ratings in the north of the region are likely one step higher than listed on the main page. Beneath the mid-December crust the snowpack is reported to be generally strong with the possible exception of areas around Stewart and northern parts of the region where the late-October, basal crust can be found near the base of the snowpack. Weak sugary faceted snow may exist around this deeply buried crust and could be triggered from shallow snowpack areas.

Avalanche Problems

Storm Slabs

Storm slabs will be building with successive weather systems - dial back your terrain choices as storm snow totals increase.
Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Storm snow will form touchy slabs.Use caution on open slopes and convex rolls

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3