11 Nov 2021

November 11, 2021

      PAST FEW DAYS:

      Monday November 8, 2021. 12:00 hrs. -5 Deg C at 1835 m.

      Tuesday November 9, 2021. 12:00 Hrs. -5 Deg C at 1835 m. Snowing lightly.

      Wednesday November 10, 2021. 12:00 Hrs. -5 Deg C at 1835 m. Pretty consistent over past 3 days.


Weather Observations for November 11, 2021 taken at 06:00 Hours.

2180 meters      -3, Winds were 20-40 KPH SSW--Whistler Peak 
1835 meters      -1, Winds were 10-30 KPH SSW--Round House
1650 meters      -3,  0 mm in 12 Hrs, 0.4? mm in 24 Hrs Base 100 cm? --Pig Alley
  660 meters       0, Valley Temp, Max temp Yesterday was +4.6, 0.2 mm of precip yesterday
Weak Trowal this am. Warmer at 1835 m.


       Sunrise this am, 07:19 Hrs. Broken cloud with unlimited visibility.


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FORECAST:

A warm front is moving onshore in a Westerly flow aloft, becoming SouthWesterly this afternoon. Light precipitation this afternoon, increasing this evening with the freezing level rising from 1200 m to 2400 m. Weak Atmospheric River early Friday am with breaks and showers for the afternoon/evening. Weak upper ridge will bring cooler temperatures  Saturday am with showers in the afternoon, impulse of moisture by the evening with warmer temperatures into Sunday. Models are inconsistent with precipitation values over the weekend, the AR may go South but time will tell. Looks like there is potential for it to be wet on Monday as well, cooling off by Monday night with ridging by Tuesday. Guesstimates: 15-22 mm by Friday am, 1-4 mm by Saturday am, 20-35 mm by Sunday am, 20-40 mm by Monday am, 20-50 mm by Tuesday am. 


      GOES image from this am.

      Weak warm front arrives this am, impulse of moisture by this afternoon.






     Westerly flow aloft this am, switching to SouthWesterly.

       Cooler Friday afternoon with some showers in the afternoon. FL 1800m cooling to 1000 m.






      Cools back down on Saturday with increasing precipitation later in the day.


      Saturday will likely be dry in the am, with rain intensifying later in the afternoon/evening.


       Warms back up on Sunday, wet, warm, and windy. Pineapple express.

      Light to moderate rain for Sunday.


      Monday is a ways off but looks wet and warm as well. Looks cooler with breaks by Tuesday.


      AVALANCHE ACTIVITY:

      Injured skier after cornice collapse on Tincan Ridge AK. Article below.             CNFAIC Image

      French rescue team recovers bodies of French climbing team. Article below.   Migma Gyalje Pic


      INFORMATION & OBSERVATIONS:

      Monday 09:00 Hrs. 0 Deg C in the valley. Light flurries.


      Looks like winter, still early with a wet system forecasted for Friday into Saturday.


     Tuesday 06:00 Hrs. Pig Alley. 1650 m.

      Tuesday 09:30 Hrs. Broken cloud. -6 Deg C. Satellite image below from same time frame.

        Precipitation went South. 5.6 mm at 660 m Tuesday. 38.2 mm in Squamish. 

     06:00 Hrs Wednesday. 2 cm of new, Base around 112 cm at 1650 m.

      Track Packing. Helps bonding in the snow, creates mini windrows, and reduces sublimation.

      Sublimation, occurring in the snow making process. 


      Big Picture on Wednesday. Fairly large highs South and West.


      A different perspective. Atmospheric Train forming. Bit of a Pineapple!!  Hope it stays South. 


     And another view further North.


      Lest we Forget                                                                                                                        Net Pic

    An update on Nov 12, 2021. Looking Nasty and heading our way Saturday pm. Wet, warm, & windy.


LOCAL MIN REPORTS:

Shovelnose Snowpack: Nov 8, 2021

Metal Dome: Nov 10, 2021

Sproatt Cabin-130 Cm: Nov 10, 2021


VIDEOS:

Roof Avalanche: China


ARTICLES:

Avalanche Canada accepting applications for sled monitorship program: Avalanch.ca

Bodies of missing French Alpinists found: Kathmandu Post

The tragedy on Ecuadors Highest Peak, 6 dead after an avalanche on Oct 23, 2021: Outside

Avalanche report on incident from cornice collapse in Alaska: Chugach Avalanche Center

Avalanche control begins: Hwy 1

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