21 Apr 2018

April 21, 2018


    AVALANCHE ACTIVITY:

    Warm temperatures release rock fall as well!

    Locally, no new avalanches were observed yesterday.


    YESTERDAY:

    Overcast Friday morning but a relatively dry air mass.

    A few snow flurries during the morning.

    Skiing & Boarding was again good, considering the temperatures.


    Lifting cloud, advection during the morning.

    Later in the day, overcast and snowing at dusk.

    Friday afternoon. Weak frontal band!

    Big picture Friday, still some snow potential!




Weather Observations for April 21, 2018  taken at 06:00 Hours.

2180 meters     -6, Winds were 40-70 KPH S  --Whistler Peak
1835 meters     -4, Winds were 25-40 KPH SE--Roundhouse
1660 meters    - 3, 10 cm of new, 10 cm in 24 hrs  Base 324 cm --Pig Alley
  660 meters    +3, Valley Temp, Max Temp Yesterday was +11.0, 0.2 mm of precip recorded yest


    As of 07:00 Hrs this am we have broken skies and variable visibility.


FORECAST:

A weak dry upper trough will move through this morning in a Southwesterly flow aloft. The FL will rise to around 1500 meters by this afternoon with unsettled weather and a clearing trend through the day. An upper ridge begins to build Sunday with some cloud Sunday morning dissipating by the afternoon with sunny skies and the FL rising too 1800 meters.Monday the ridge continues to dominate with some cloud development but with sunny breaks and the FL rising to 2800 meters. This pattern continues into at least Friday with mostly sunny skies and the FL eventually rising to 3500 meters by Thursday. Dry and warm, be sure to bring your sun screen!
Guesstimates: trace-1 cm by Sunday morning, 0 cm for Monday into Thursday.


   GOES IR image from this am.



    Dry weak upper trough. Warming temperatures.

    Clearing trend.

    Unsettled.

    Fronts along the coast.

    High pressure starts to build.

    Sunny skies and warm temps.


    INFORMATION & OBSERVATIONS:

    Avalanche, artist not known to me!

    Many layers of cloud!

    Warm and moist in the valley. High of +11 Deg C.

    Remember if your coming back from touring that there is a lot of terrain closed for construction.

    Last night at around 21:00 Hrs,  -3 at 2240 meters, 50-75 KPH SE. Snowing.


Recent Avalanche Canada MIN Report:

Watersprite


ARTICLES:

Avalanche danger raised to 'Extreme': Norway

An avalanche destroys snow making equipment: Tignes

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