25 Nov 2015

November 25, 2015

    Size 1 Na (Natural) avalanches observed Tuesday, likely from Monday evening in storm snow.

    Early Tuesday November 24, 2015.

    Whistler early morning. It looked cold!

    Strong outflow winds from the N for most of the day. 40-70 kph in the am, 30-60 KPH pm 1865 M 

    Size 1 Na's observed Tuesday, likely ran Monday night or early Tuesday morning.

     Sa (accidental) Wind Slab in Hidden Chute. Tues aft. Temporary Boundary.      Toby Salin Image

     Burnt Stew Glide Crack                                                                              Adam Francis Image

    Sunset Tuesday evening, still see the spindrift which occurred all day.

    Moisture went South Tuesday morning.

    Pretty big high in the big picture!

Weather Observations for November 25, 2015: taken at 06:00 Hours.

2240 meters    -10, Winds were 30-40 KPH NE  --Horstman Hut Station
2180 meters    -10, Winds were 50-80 KPH SSW  --Whistler Peak
1860 meters      -8, Winds were 40-60 KPH NW  --Rendevous
1835 meters      -8, Winds were 5-10 KPH E  --Roundhouse
1650 meters      -7, 0 cm of new, 82 cm Base, Relative Humidity 63%  --Pig Alley
1550 meters      -4, 0 cm of new, 55 cm Base  --Catskinner 
  660 meters      -9, Valley Temp, Max Temp Yesterday was +0.3. Trace of price recorded.

Be careful if venturing out, pockets of windslab and reverse loading.

    As of 07:00 Hrs we have clear skies and unlimited visibility.

For the forecast, the modified Arctic Front will begin to degrade with warmer temperatures this afternoon as the RRR (Ridiculously Resilient Ridge) in the Pacific Northwest begins to strengthen.
The freezing level will rise to around 1000 meters today with valley temperatures hovering around 0 by this afternoon in a Northeast flow aloft. Winds should abate later this morning/afternoon. The full moon this evening (22:44 UTC) will see the FL rise to 2500 meters, topping out on Friday as high as 3000 + meters, with temperatures in the valley fluctuating from 0 to +4 (Day time highs). The ridge remains until Monday and at that time the FL should drop back down to around 800 meters. A front is forecasted to arrive on Tuesday morning. Lets hope so with a favourable FL.

    High amplitude upper ridge well offshore.

    Arctic high will be pushed Eastward this morning.

   Warm temps from the RRR on Friday. Arctic air in the Rocky Mountain Trench.

    Hopefully we will see some precipitation by Tuesday morning.


The Human Factor 2.0: SLF

Explanation of a wind slab: NAC

N.H. mother of avalanche victim works to prevent other deaths: GlobeStaff

Snoqualmie Pass avalanches remain dangerous for drivers this winter: King5News

    It was a cold day, but not really cold!! Minimum -14 at 10:00 Hours with 50-85 KPH winds NW.

    Looking toward Mount Currie Tuesday afternoon.

    Great temperatures for making snow.

    That's a lot of water going through the nozzles.

    Snow making stepping up production with the cold temps. Valley Bound.

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