23 Feb 2017

February 23, 2017


AVALANCHE ACTIVITY:

    Sz1 very soft slabs yesterday.

    Point releases in the reactive surface.


    YESTERDAY:

    Wednesday February 22, 2017.

    Cloud stayed around Whistler for most of the day.

    Looking up towards Meager area..

    Wednesday morning.

    Steeps were nice, perhaps a bit deeper would have been nice.

    A bit of air.

    There was some nice snow to be found.

    Convective cloud development later in the day yesterday.

    Near days end in Whistler.

Weather Observations for February 23, 2017: taken at 06:00 Hours.

2240 meters      -14, Winds were 10-15 KPH SE  --Horstman Hut 
2180 meters      -13, Winds were   5-10 KPH S  --Whistler Peak
1860 meters      -13, Winds were   5-10 KPH SE--Rendevous
1835 meters      -12, Winds were     0-5 KPH SE--Roundhouse
1650 meters      -12, 0 cm of new snow, 0 cm in 24 hrs, 250 cm Base, RH 94%  --Pig Alley
1550 meters      -11, 0 cm of new snow, 0 cm in 24 hrs, 181 cm Base, RH 98%  --Catskinner 
  660 meters       -9, Valley Temp, Max Temp Yesterday was +4.8, 0.0 mm of Precip recorded yest


    As of 07:00 Hrs we have clear skies and unlimited visibility.

FORECAST:

Ridging in a Northwest flow aloft will bring mostly sunny skies to the area today with cold temperatures.
A cold upper trough will bring some cloud into the area later today. Convective cloud development may bring some flurries overnight into Friday morning. Expect unsettled weather into early next week with intermittent snow flurries during this period. The FL will remain below surface.

    Mostly sunny for today.


   Unsettled for Friday.


    Unsettled Saturday.


   Uunsettled Sunday.

    Unsettled Monday.




OBSERVATIONS & INFORMATION:


   Nice snow yesterday, lots of sloughing.

   Low density snow on a crust.


    Surface hoar everywhere.

    Surface Hoar at 1550 meters.                                                                          Fairle Fraser Image

    Large surface hoar North of Pemberton.

    Convective clouds produced some graupel yesterday.


ARTICLES:

Canadian Avalanche Forecasts: Avalog

Avalanche assessments for the USWeek of February 19, 2017

Avalanche danger a result of weak snowpack layers: Parks Canada


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