4 Jan 2020

January 4, 2020

    YESTERDAY:

    Umbrella was a good idea in the lift line, Friday morning.

    Nice snow above 1500 meters.

    Good times had by all!!

    Friday January 3, 2020. 12:00 Hrs. -1.3 Deg C with a 25-60 KPH SE wind.


    Image from 12:30 Hrs Friday. Not much luck with this storm either.

    A few breaks in the afternoon.

    Not much snow in the early afternoon.

    Where did everyone go? 15:30 hours.


Weather Observations for January 4, 2020 taken at 06:00 Hours.

2240 meters    -11, Winds were  75-150 KPH ESE--Horstman Hut
2180 meters      -9, Winds were 80-100 KPH N--Whistler Peak
1860 meters      -8, Winds were   20-40 KPH W --Rendevous 
1835 meters      -8, Winds were   35-55 KPH S--Round House
1650 meters      -6, 33 cm in 12 Hrs, 41 cm in 24 Hrs, Base 160 cm --Pig Alley
1560 meters .    -6, 22 cm in 12 Hrs, 28 cm in 24 Hrs, Base 103 cm--Catskinner
  660 meters       0, Valley Temp, Max temp Yesterday was +4.0, 28.4 mm of precip yesterday.


    As of 07:00 Hrs this am we have broken cloud and unlimited visbility.


FORECAST:

Post frontal weather today in a Southerly>Westerly flow aloft. A cooler air mass and associated moisture will bring periods of light snowfall with the freezing level hovering in the 700 meter range. Another cold front will arrive tonight into Sunday morning, with the FL rising to around 1000 meters. Yet another front for Monday night into Tuesday morning with a warmer airmass, but the FL should remain below 1500 meters. A series of frontal bands will continue to bring periods of snow into Wednesday. Guesstimates: 6-10 cm by Sunday morning, 6-12 cm by Monday morning, 10-15 cm by Tuesday morning.



    GOES IR image from this am.



    Cooler air mass for today with winds easing this am.





    Fronts alonng the coast.

    Slightly warmer on Sunday, low continues to send frontal bands our way.





        Warm high still keeping the temperatures on the high side, Monday.



    AVALANCHE ACTIVITY:

    Friday Morning

    Avalanche control on lower elevations yesterday produced Sz 1-1.5 Xe, Xc, Sc. Some Na Sz 2 ^






     INFORMATION & OBSERVATIONS:

    Snowballing on Davies Dervish.

    Staircase is looking much better.
       
    Shredding the bite.

    Limited terrain.

    Competiion on Hooker Hump/JC Liftline.

    Pressure dropped at 15:00 Hrs, started precipitating lightly in the valley.

    Yesterday 28.4 mm of precipitation was recorded at 660 meters.



From Avalanche Canada MIN Reports:

Cayoosh Boulder field: Jan 2, 2020


VIDEOS:

Whistler Weather with Meteorolagist: David Jones


ARTICLES:

Coroner-Fatal Avalanche happened where you wouldn't expect: Snowmobilers, Montana

Rare Extreme Avalanche rating for the Sea To Sky: Vancouver Courier

Avalanches 'almost certain' in Sea to Sky on Friday: AvCan

Storm Slab Avalanches: AvCan

The Mega Season Pass is Killing Skiing: Outside magazine

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