November 22, 2017

    AVALANCHE ACTIVITY:

    No new local reports of avalanches, but naturals very likely overnight.

   YESTERDAY:

    Light snow fall and great turns early Tuesday morning.

    It did look warm even before the warm air arrived.

    Rain and 0 Deg C at 16:00 Hrs on Tuesday.



Weather Observations for November 22, 2017 taken at 06:00 Hours.

2180 meters    +2, Winds were 25-45 KPH S  --Whistler Peak
1835 meters    +5, Winds were 15-30 KPH SE --Roundhouse
1660 meters    +5, 0 cm of new, 4 cm in 24 hrs  Base 170 cm --Pig Alley

  660 meters    +1, Valley Temp, Max Temp Yesterday was +1.3, 21.8 mm of precip recorded
Squamish received 43.4 mm yesterday.

    As of 07:00 hrs this am we have overcast skies, variable visibility and it is raining lightly.

FORECAST:

The atmospheric river is still sending moisture our way in a Southwesterly flow aloft but the majority of the rain has been directed South. Luckily it will continue in that direction and we should be spared from the unseasonably warm moist flow, better than 100+ mm. For today we can expect periods of rain this morning diminishing in frequency by this afternoon with the freezing level topping out at 2800 meters. We may even see a bit of snow above tree line by tomorrow morning as the FL should come back down to 1600 meters by Thursday. The overcast conditions will continue into Friday with light snowfall in the alpine and the FL dropping to 1400 meters on Friday. A weak front will push through on Saturday with 1400 M FL and light -moderate snow above 1000 meters. A cooling and drying trend may or may not happen by Sunday, more on that later. Guesstimates: 10-30mm by Thursday morning--1-3 cm above 2000 meters, 5-10 cm by Friday morning above 1300 meters, 5-10 cm by Saturday morning above 1000 meters, 20-25 cm by Sunday morning above 1400 meters.

    Flow for today, looks like the majority of the rain is heading South.

     IR image from this am.

    Still some moisture for today.

    Low will still be sending clouds our way on Thursday.


    OBSERVATIONS & INFORMATION:

    All that snow will be absorbing lots of rain.

    Thick cloud cover over our zone on Tuesday.

    Big picture on Tuesday.

             Warm air moved in before noon.

    Slush fest Tuesday afternoon.

    Canada's Mountain Landscapes-Exhibit at Audain Art Museum-Great day to go take this in!!!

    Info from the Brandywine Area from Toby Salin on Saturday.                                  Toby Salin Pic

No real large scale avalanche activity other than a bunch of south facing point release surface sloughing and roller balling as it warmed up in afternoon. I did not bother digging a pit, but the trench left from my sled track showed new snow well bonded to the old and seemingly bridged/self supported to the ground. 240cm base at 1950m

                     Looked like an awesome day for sledding!!



Avalanche Canda is looking for more information, check out this link below:

Avalanche Canada Forecaster's




ARTICLES:

Life During Wartime-The Battle of Ski Patrollers: FreeSkier

Avalanche risk in mountains amid wider warning of snow: Scotland

Squaw Valley opens with expanded avalanche control: Powder

Vail Mountain to debut Junior Ski Patrol Program: Colorado