Be aware of areas with summer firn, there has been a slide triggered on that layer.
There is a facet crust layer 17-11-09 in the Whistler Area in the Alpine.
Avalanche Travel Advisory for the areas adjoining Whistler
Blackcomb as of Friday November 17th:
Mild temperatures at the mountaintops in the Coast Range
Mtns at the beginning of the month
followed by rapid cooling resulted in the formation of the November 2nd
crust. Temperatures plummeted to -20 C from November 3rd-6th
with a weak layer of facets observed to have formed above the crust. We are now
calling this the November 9th Crust Fact layer since that was when
it was buried by new snow.
The storm cycle that arrived over the past weekend deposited
a total of 189cm of storm snow by the time it exited our region on Thursday. A
widespread natural avalanche cycle occurred on Tuesday night as strong mountaintop
winds deposited 86cm in a 24hr period. A size 2.5 natural avalanche was
observed to have run in Whistler Bowl with a crown line of at least 1m. The
storm snow layers were observed to remain quite touchy on Wednesday, with slab
avalanches easily trigger able down to at least the 1700m elevation. The storm
snow layers rapidly settled and gain strength over the next 24hrs with little
in the way of slab avalanche activity observed with Avalanche control that was
carried out on Whistler Mtn on Thursday. Cornices were the only features that
were observed to remain easily trigger able yesterday.
Caution is advised when travelling in any wind loaded
terrain features and around corniced ridge lines. A cornice fall may have the
potential to trigger a deep slab avalanche on the aforementioned buried
weakness that are lurking within our snowpack. As always at this time of year,
the bond between our early season snowpack and any glaciated areas or summer
firn remains suspect.
Remember that early season conditions persist with many
rocky hazards lurking beneath the storm snow in off piste terrain.
Whistler Blackcomb Snow Safety
A man was killed in an avalanche while plowing a road in Austria. Story in article sec. Net Pic
An avalanche in Afghanistan has killed 10 people, story below. Net Pic
A man was killed in an avalanche while plowing a road in Austria. Story in article sec. Net Pic
YESTERDAY:
Unsettled early Friday morning.
Dry knee deep powder.
Hiking for the goods. Pay attention to closures.
FORECAST:
The next frontal band is moving our way with mostly cloudy skies in a Southwesterly flow aloft. A wet cold front will push through Saturday night into Sunday with a freezing level hovering in the 1000 meter range. The cold front should pass through sometime Sunday night with unsettled weather expected for Monday. A warm wet system is expected later Tuesday and Wednesday of next week, more on that as we get closer. Guesstimates: 10-20 cm by Sunday morning, 30-50 cm by Monday morning, 1-2 cm by Tuesday morning.
IR image for this am.
Cold front for Saturday night.
Heavy snow Sunday morning.
Unsettled on Monday.
Warm wet front on Tuesday.
Flow into next week.
Weather Observations for November 18, 2017 taken at 06:00 Hours.
2180 meters -6, Winds were 45-65 KPH S --Whistler Peak
1835 meters -4, Winds were 15-40 KPH S --Roundhouse
1660 meters -2, 1 cm of new, Base168 cm --Pig Alley
660 meters 0, Valley Temp, Max Temp Yesterday was +2.9, 5.9 mm of Precip recorded yest
INFORMATION & OBSERVATIONS:
Be very wary of tree wells, cliffs and early season hazards.
It became cloudier as the day progressed.
ARTICLES:
Avalanche kills snow removal worker in Vararlberg: Austria
Snow avalanche kills 10 in Kumar: Afghanistan
Forecasters promote avalanche safety awareness to kick off season: Coast Mountain News
Need to translate but interesting-Avalanche in the Val deth Joeu: Spain
Search resumes on Saturday for two missing snowboarders: Mt Baker
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