24 Nov 2018

November 24, 2018


    Yesterday:

    Early Friday morning, new snow line down to 1000 meters. Light snow fall in the am.

    Some breaks by noon.

    Unsettled by 16:00 Hrs.

Weather Observations for November 24, 2018  taken at 06:00 Hours.

2240 meters        -8, Winds were 20-35 KPH S --Horstman Hut
1860 meters        -6, Winds were 10-20 KPH SE --Rendevous
1650 meters        -6, 0 cm of new snow, 3 cm in 24 hrs, Base 56 cm.--Pig Alley
  660 meters         0, Valley Temp, Max Temp Yesterday was +2.6, 3.2 mm of precip recorded yest

    As of 06:30 hrs this am we have clear skies and unlimited visibility above a valley cloud layer.

Forecast:

A weak ridge of high pressure will build today in a Northwest flow aloft. The freezing level has dropped to just above surface and sunny skies will prevail for this morning. Expect an increase in cloud cover this afternoon with the FL hovering in the 1000 meter range. There is even a chance of some light isolated snow flurries at around dusk, as a very weak warm front will try to push onto the coast.  Sunday is looking cloudy with the likelihood of some alpine flurries mostly in the evening and the FL rising to 1500 meters. A strong surface low will send waves of precipitation into our zone on Monday in a warm Southwest flow with moderate to heavy precipitation. Still unsure of exactly where the FL will end up but somewhere between 2400 and 1800 meters. More info as we get closer to Monday. Guesstimates: trace to 1 cm by Sunday morning, 8-10 cm by Monday morning?

    GOES IR image from this am, most of the moisture is heading North.


    850 mb map represents the elevation of the Catskinner weather plot approximately.

    Looking like a nice morning.


    Weak warm front off the coast.


    A mix of warm and cold fronts in the Pacific.


        Low begins to pull some warm air from the high pressure to the South.


    Cloudy on Sunday.


    Warm front Sunday evening.

    Strong winds and warm temperatures Monday.


    Looking like an atmospheric river on the way for Monday.



    Avalanche Activity:

    No new known avalanche activity yesterday




    Information & Observations:

    New snow yesterday from 06:00 hrs to 14:00 Hrs,  3 cm at 1660 meters 3 cm at 1550 meters.

    Low level cloud in the afternoon.

    Snow guns turned on in the afternoon, -2 at 15:00 hrs at 1550 meters.


    Friday afternoon.

    Big picture Friday afternoon.


From Avalanche Canada MIN report:

Elfin Lakes: Nov 23, 2018


Articles:

Voice concerns in avalanche terrain: Mtn Sledder

Backcountry avalanche risks and safety tips: E Know.ca

Heavy snow brings increased backcountry avalanche risk in Utah: UAC

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