12 Feb 2019

February 12, 2019

    YESTERDAY:

    Sunrise was at 07:30 hrs on Monday

    Front was on our door step early in the am.

    Clouds kept pushing in from the South.

   At one point in the morning it looked like we would be engulfed.

    Arctic high kept pushing back.

    At around noon.

    16:00 hrs.

    More cloud moving in from the South at days end.

    Just before sunset which was at 17:22 Hrs.

    Monday afternoon



Weather Observations for February 12, 2019 taken at 06:00 Hours.

2240 meters     -12, Winds were 25-30 KPH SE--Horstman Hut
2180 meters     -12, Winds were 25-35 KPH S--Whistler Peak
1860 meters     -16, Winds were 10-15 KPH NNE--Rendevous
1835 meters     -17, Winds were 15-25 KPH NE--Round House
1650 meters     -16, 7 cm of new, 7 cm in 24 hrs, Base 251 cm--Pig Alley
1565 meters     -16, 4 cm of new, 4 cm in 24 hrs, Base 171 cm--Catskinner
  660 meters     -11, Valley Temp, Max temp Yesterday was -1.7, 0.0 mm of precip recorded yest


    As of 07:00 Hrs we have overcast skies, variable visibility and it s snowing lightly.


FORECAST:

The low over Vancouver Island will bring a weak upper trough in a Southwesterly flow aloft. Cloudy this am with light snow starting around noon, intensifying tonight and diminishing by Wednesday morning. The clouds will dissipate Wednesday morning as the Arctic high pushes back into Whistler.
Sunny Wednesday afternoon with the FL rising to just above surface, before another low moves down the coast with unsettled weather Thursday morning, transitioning into flurries, intensifying Thursday night into Friday morning. Overcast Saturday with some snow flurries.
Guesstimates: 8-12 cm by Wednesday morning.


    GOES IR image from this am.


    Low is over Vancouver Island, slightly warmer temps.





    Fronts along the coast.

    Low moves South into Washington State,





    Another low moves down the coast. Warmer Temps.

    Low over Vancouver Island, Arctic high has moved East.


    AVALANCHE ACTIVITY:

    Chalk Creek avalanche that killed a snowmobiler, report from UAC in article section.  UAC Pic

    Circleville Mountain avalanche that killed a snowmobiler, report below.                   UAC Pic

          Sz  4 just North of Mount Waddington, 20,000 Ft.                       Dary Hemmonds Photo

    Locally, no new avalanches were observed. 



    INFORMATION & OBSERVATIONS:

   Snow and cornice feature popped off the rock.

    Under Peak Chair.

    Sastrugi continues to be sculpted.

    Amazing what the wind can do!!

    With some light snow over the sastrugi it could make for an interesting surface.

    There was knee deep powder on this aspect last Friday.

    You decide what it looks like!!!

    Many aspects and elevations are expert terrain at this time, we need a storm!!!



From Avalanche Canada MIN Reports:

Metal Dome: Feb 9, 2019

Wedgemont Lake: Feb 9, 2019

Blowdown: Feb 10, 2019



ARTICLES:

Avalanche investigation of deceased snowmobiler at Chalk Creek: UAC

Avalanche investigation of deceased snowmobiler at Circleville Mountain: UAC

Avalanche investigation of deceased snowmobiler in the La Sal Mtns, Jan 26, 2019: UAC

Mt Bachelor concerned about tree well and snow immersion hazards: Washington State

Danger Low Down: Avalanche Canada

12 Avalanches in East Iceland over single 24 hr period: Reykjavik Grapevine

Snow fighters in every storm on Avalanche Patrol: UDOT

Arctic Outflow Warning: Whistler

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