18 Jan 2017

January 18, 2017


    Explosives stain from control work on JC Wall-Blackcomb in the morning.

   Limited observations yesterday, several Sz 1-1.5 with Xe (explosives), Sc (ski cut). Not much            control work in the alpine.


    Snow in the trees at 1000 meters Tuesday morning, January 17, 2017. FL fluctuated thru the day.

    Snowing and blowing in the am, snow stuck to the Rendevous Restraunt.

    Moderate snowfall at times in the morning. 7 cm recorded from 06:30 to 14:30 at 1550 meters.

    More snow falling in the upper elevations.

    Precip and winds eased for a while during the afternoon.

    Wet snow in the valley just after sunset.

    Tuesday morning.

    Big picture yesterday at noon looked impressive.

Weather Observations for January 18, 2017: taken at 06:00 Hours.

2240 meters   -3, Winds were 40-60 KPH S   --Horstman Hut 
2180 meters   -2, Winds were 35-55 KPH S   --Whistler Peak
1860 meters   -1, Winds were 30-50 KPH SE --Rendevous
1835 meters   -1, Winds were 40-60 KPH SE--Roundhouse
1650 meters    0,  30 cm of new snow, 39 cm in 24 hrs, 214 cm Base, RH 100%  --Pig Alley
1550 meters    0,  26 cm of new snow, 31 cm in 24 hrs, 1135 cm Base, RH 100%  --Catskinner 
  660 meters    0, Valley Temp, Max Temp Yesterday was +0.8, 52.9 mm of Precip recorded yest

    As of 07:00 Hrs we have overcast skies, variable visibility and it is snowing less than 1 cm per hour.


A  warm front will continue to push through today with wet, warm, and windy weather in a Southwesterly flow aloft. The Mango Express will become more of a Pineapple Express as most of the moisture will be drawn from the Hawaiian Island's. The freezing level is sitting around 1700 meters and will slowly drop today to about 1200 meters by tonight. The jet stream will shift south at sometime Wednesday/ Thursday and the front will move Northeast with a cool upper trough following in its wake. Thursday should see overcast skies and light snowfall with a FL hovering in the 1000 meter range.  By Friday we could see an unsettled day before another series of cool Pacific Fronts bring snow and seasonable temperatures to the zone for the weekend. Guesstimates: 20-30 cm by Thursday morning in the alpine, 8-12 cm by Friday morning, Trace to 2 cm by Saturday morning.

    GOES IR image from this morning.

   Warm front for today, flow will likely switch to Southerly.

    Cool upper level trough for Thursday.

   Cool upper level trough will bring light snow Saturday into Sunday with moderate snowfall Sun night.


    Shut out for the alpine yesterday. Crystal Chair did open in the afternoon.

    Challenging visibility at times.

    By the afternoon the tree skiing was quite nice.

    In the valley--Water Water everywhere.


Avalanche Warning issued for the Sea to Sky Corridor: Avalanche Canada

Go at your own risk: Castanet

Steamboat-area avalanche injures Search & Rescue volunteer during mission: Colorado

How to survive an avalanche: Outdoor Life

Whistler Avalanche Video goes Viral: Avalanche Canada

An open apology from Aspen Highlands rope ducker: Colorado

Interstate 90 over Snoqualmie Pass closed due to numerous avalanches: Stand-By

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