22 Nov 2018

November 22, 2018


    PAST FEW DAYS:

    Monday afternoon November 19, 2018 +4.5 deg C at 2200 meters.

    Found some wind blown snow on Monday. Northeast aspect Rainbow

    Stiff 14 cm slab at 1800 m North aspect with some buried surface hoar below. Strong bridging.

    Tuesday morning sunrise. +1 at 2240 M -3 at 660 M.

    A ribbon of man made snow from the top of JC on Tuesday.

    Clouds pushed in Tuesday afternoon.

    Wednesday morning 07:30 Hrs snowing lightly -1 at 1835 meters. 1 cm new at 1660 meters.

    In the Sea to Sky area yesterday, Rainfall amounts Squamish 28.5 mm, Pemberton 10.1 mm.

    Snowline above Creekside 16:00 Hrs Wednesday,  13.8 mm received in Whistler.



Weather Observations for November 22, 2018  taken at 06:00 Hours.

2240 meters        -4, Winds were 10-15 KPH SE --Horstman Hut
1860 meters        -2, Winds were   5-10 KPH ESE --Rendevous
1650 meters        -1, 15 cm of new, 25 cm in 24 hrs, base 45 cm--Pig Alley
  660 meters         0, Valley Temp, Max Temp Yesterday was +2.5, 13.8 mm of precip recorded yest

    As of 06:30 Hrs this am we have overcast skies and limited visibility.


Forecast:

A  shortwave trough is forecasted to push onshore around noon today with light to moderate precipitation in a Southwest flow aloft. The deep low off the coast will bring high alpine winds and the freezing level should slowly drop from 1500 meters down to 1200 meters as the cold front pushes through. A weaker frontal band moves through on Friday with light precipitation and the FL dropping to near surface by Friday night as the front pushes through with unsettled weather. The weekend is looking dry with unsettled weather and warming temperatures. A warm moist vigorous front is expected for Monday.
Guesstimates:10-15 cm by Friday morning, 4-8 cm by Saturday morning.


    GOES IR image from this am.


     Freezing levels in the 1500 meter range. Low moving down the coast.



    Fronts in the Pacific.



    Cold front moving onshore.


    May see winds up to 90 KPH at 2240 meters..

    High well to the South, low bringing cooler temps.



    Upper trough bringing light precipitation.


    Clearing by Friday night, with unsettled weather for the weekend.


    Avalanche Activity:

    No new known avalanche activity to report locally..

    Large results in Colorado with explosive testing. Story below.                               CAIC Image



Articles:

Early season avalanche safety refresher: HikeForPow(der)

Weaker snow pack spells future avalanche trouble: Colorado

Take the time to be prepared for early season turns: Backcountry Magazine

Large avalanches being released with explosives: Colorado

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