27 Jan 2015

January 27, 2015

    More information on the Couloir de Mamelle Avalanche, France. Story Below  Photo D L Vincent


    Sunrise Monday January 26, 2015.

    Sunrise was officially at 07:54 Monday morning.


    Very high cirrus looking Southwest from the Peak of Whistler.

    Fissile Mountain, Monday afternoon.

    Sunset January 26, 2015.


Weather Observations for January 27, 2015; taken at 06:00 Hours.

2240 meters        -2, Winds were 30-45 KPH from the SSE
2180 meters        -1, Winds were 30-45 -KPH from the SSW
1860 meters        -1, Winds were 15-25 KPH from the E
1835 meters       +1, Winds were 25-35 KPH from the SSE
1650 meters       +2, No new new snow, Base 122 cm
1550 meters       +2, No new new snow, Base 100 cm,  Relative Humidity 91%.
  660 meters       +2, Valley Temp, Max Temp Yest +9.


   As of 07:00 Hours we have overcast skies with unlimited visibility. Lights top left Rendevous.



For the Forecast, the weak surface front presently passing through will move East by this evening in a Southwesterly flow. Cloudy skies for today with the chance of some isolated snow flurries above 1500 meters. The upper level high pressure will rebuild for tomorrow morning with unsettled conditions and the freezing level briefly dropping to around 1200 meters. Unsettled conditions well into Saturday can be expected with the freezing level moving back up to around 1800 meters for  Wednesday then fluctuating between 1500-1800 meters until Saturday. Uncertainty in the models beyond Saturday, but as of now there is a good chance for a Pacific Front to arrive on the coast Saturday evening with cooler temperatures and light snowfall into Sunday.

    Yesterday at around noon, the weakening front is on the coast.

    Big picture from yesterday afternoon.

    Very little moisture for this morning as the weakening front moves East.

   The high pressure will rebuild this evening for unsettled weather into Saturday.

   Weak front passing through today.

    High pressure rebuilding for Wednesday.


ARTICLES:

Deadly large avalanche leaves 6 experienced ski tourer's dead in France: Pistehors.com

Oregon Supreme court finds ski area liability release unenforceable: Bend, Oregon

POV Snowmobile cuts out small slab: January 25, 2015

BC SAR weekly Incident Report: Jan 12 to Jan 18, 2015


OBSERVATIONS:

Hi Wango,

I went out today (26 Th) to have a look at the aftermath...found a 5cm crust in the alpine that was supportive to skis and boots in most polar alpine areas. Solar alpine areas had the crust breaking down on steeper slopes and would not support a boot. Below the crust was moist snow, so if you punched through the crust, you would post-hole. At treeline in the afternoon the solar aspects had no crust left, just moist snow, and polar aspects had a breakable crust. Below treeline, the snowpack was isothermal. Treeline south aspects in the afternoon were the runs of the day. Ski crampons are highly recommended...
We had moderate to strong winds out of the SW, scattered cloud, no precip and mild, positive temps. 
Cheers
Jeff Van Driel


                                                                                                                                                               Jeff Van Driel Photo


                                                                                                                                    Jeff Van Driel Photo
                                                                                                                                  Jeff Van Driel Photo
                                                                                                                                     Jeff Va Driel Photo

                      Bottom of Blackcomb Glacier, still thin at this elevation.        Don Saugstad Pic

   Large avalanche in big terrain, close up of the fracture line in the Couloir de Mamelle at top of page.


   There were some great colours for about 5 minutes Monday morning.

   Tower 2 and 1 of the Peak to Peak lift on the Whistler side.

   Warm weather is affecting the lower mountain. Lower Peak to Creek above Creekside.

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