31 Dec 2019

December 31, 2019

    YESTERDAY:

    Early Monday morning.

    Marine layer slowly pushing into the zone Monday morning.

    Monday December 30, 2019. 13:00 Hrs. -2.3 Deg C with a 10-30 KPH SW wind.

    Warm front was moist at 16:00 Hrs. Just started precipitating.

    Big picture Monday afternoon, looks promising. Atmospheric Dynamics


Weather Observations for December 31, 2019 taken at 06:00 Hours.

2240 meters      -4, Winds were 65-75 KPH S--Horstman Hut
2180 meters      -4, Winds were 55-80 KPH S--Whistler Peak
1860 meters      -2, Winds were 25-40 KPH SE --Rendevous 
1835 meters      -2, Winds were 15-25 KPH ESE--Round House
1650 meters      -1, 14 cm in 12 Hrs, 14 cm in 24 Hrs, Base 104  cm --Pig Alley
1560 meters .    -3, 11 cm in 12 Hrs,  11 cm in 24 Hrs, Base  55 cm--Catskinner
  660 meters       0, Valley Temp, Max temp Yesterday was +3.4, 1.9 mm of precip yesterday.

    As of 07:00 Hrs we have obscured skies, limited visibility and snowing 2 cm per hour.


FORECAST:

Cold front passing through today in a Westerly flow aloft. The freezing level will hover around the 1500 meter range, chance of a spike to 1800 but keep your fingers crossed. Moderate to heavy precipitation for today easing Wednesday into Thursday in a Northwesterly flow aloft.  Another impulse for Thursday night into Friday with moderate precipitation with the FL fluctuating from surface to 1500 meters. Series of frontal bands continues into Sunday, with cooler temperatures for Saturday into Sunday. Guesstimates: 30-40 cm by Wednesday morning, 4-8 cm by Thursday morning, 15-20 cm by Friday morning, 30-50 cm by Saturday morning.

    GOES IR image from this am.


     Westerly flow today with moderate precip and rising FL.





    Fronts along the coast.

    Drying out on Wednesday with cooler temperatures and light snow.





    Upper level trough for Thursday, more precipitation on the way.




    AVALANCHE ACTIVITY:

    No new avalanche activity observed yesterday.


    INFORMATION & OBSERVATIONS:

    Conditions in the alpine will be better after the next series of storms.

    A little bony, can remember skiing Road Runner on Dec 4, 1983-- knee deep powder -12 Deg C.

    Looking for two CAA Level 1's to do avalanche tours on Monday's & Tuesday's. Free Pass!

    That's a well lit machine.


From Avalanche Canada MIN Reports:

Duffy: Dec 29, 2019



VIDEOS:

Cornice collapse resulting in an: Avalanche

Whistler Weather with meteorologist: David Jones



ARTICLES:

Concise article on the Italian Avalanche fatalities: Gripped

Recreationalists should maintain avalanche safety knowledge: Gregg Goodland

Heavy Snow + Warming Temps = Avalanche Activity: CKPGT

A look at 104 outdoor recreation deaths that occurred in Colorado in 2019: The Gazette

Tree Well and deep Snow Safety: NSAA

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