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Avalanche Forecast

Archived

Nov 9th, 2020–Nov 10th, 2020

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.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Glacier.

Small pockets of slab may be encountered if you venture high enough to find skiable conditions. Rugged travel in the valley bottoms means it will take some effort to get there though. Skitter with increasing caution as you transition below treeline.

Weather Forecast

A weak Aleutian Low moves toward our area this evening.  Sadly it isn't bringing enough snow with it to improve the skiing.

Today: Sunny with increasing cloud. Alpine High -10 C. Ridge wind light SW.

Tonight: Mainly cloudy, isolated flurries. Alpine Low -11 C.

Tuesday: Mainly cloudy, isolated flurries. Alpine High -10 C. Ridge wind light SW.

Snowpack Summary

Outflow Northerly wind has loaded what little snow is available for transport in to lees. Last weeks storm gave heavy rain as high as 2400m, and over 50cm of snow accompanied by extreme W winds at upper elevations. The storm ended with a rapid cooling trend; refreezing the saturated snowpack and leaving a dusting of 5-10cm on the crusted surface.

Avalanche Summary

No new avalanches have been observed or reported.

A significant loose wet avalanche cycle occurred with the last storm with slides up to size 3; the debris from this is now refrozen and presents a significant hazard to skiers.

Confidence

Due to the number and quality of field observations

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.