9 Feb 2020

February 9, 2020


    Awesome day Saturday.

    Windy on the ridgelines.

    Dry light snow in the trees.

    Snow was a little slabby on some aspects.

    Pyroclastic and Mount Cayley.

    Saturday February 8, 2020. 12:00 Hrs. -6.3 with a 5-30 KPH North wind.

    Saturday afternoon.

    Big picture Saturday.

    A few clouds in the afternoon.

    Just after the moon came up.

    Full Moon is tonight.

    Pemberton Fog.

Weather Observations for February 9, 2020 taken at 06:00 Hours.

2240 meters    -8, Winds were 10-20 KPH N--Horstman Hut
2180 meters    -7, Winds were 25-35 KPH WNW--Whistler Peak
1860 meters    -4, Winds were   5-10 KPH NNE --Rendezvous 
1835 meters    -6, Winds were   5-10 KPH WNW--Round House
1650 meters    -6, 0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 257 cm --Pig Alley
1560 meters .  -6, 0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 174 cm--Catskinner
  660 meters    -8, Valley Temp, Max temp Yesterday was +4.6, 0.2 mm of precip yesterday.

    As of 07:00 Hrs we have high overcast and unlimited visibility.


High pressure will dominate the pattern for a few days with a mix of sun and cloud. Northwest flow aloft for today with the freezing level rising to around 1000 meters with daytime heating. FL will continue to rise into Monday. A weak frontal band will arrive on Tuesday with a chance of some light flurries. Unsettled again Wednesday before a moist frontal band arrives for Thursday.
Guesstimates: No snow for today and Monday, trace-1 cm by Wednesday morning.

    GOES IR image from this am. Cloud moving in from the North.

     High dominating, but some cloud passing by from the North for this am.

    Fronts along the coast.

     High still in control for Monday.

     More cloud for Tuesday as the low to the North sends cloud our way.


    Avalanche mitigation on Blackcomb yesterday produced Sz 1-2 Xe, Sc, Xl. Some Na observed.

    Avalanche mitigation on Whistler Saturday produced Sz 1-2 Xe, Xc, Sc.

    Ski Cut Saturday morning, North aspect.

    Loose dry to Sz 1 soft slab.

    Moist loose on solar aspects yesterday.

    Lots of moist loose activity.

    Evidence of old wet debris from last week. Grizzly Lake.


    Wind affected snow on many aspects.

    Mount Fee <Click for description.

    Some cornices are enormous.

    Slightly wind affected but sked well!

    Not sure if I have ever seen that much snowmobile traffic in one day.

    Great riding on Saturday.


Tobias C. Van Veen:
Time to add to the stoke.
Lotsa micro terrain wind effect everywhere, but so be neat bits of bleh. We stuck to the sun. Played nicely.
Saw a strange incident on Decker glacier. Remember kids, hucking off cornices onto unsuspecting touring parties on loaded lee slopes causes slides. This one almost took out three folks on the uptrack. Rider caught in the slide lost his ski, resulting in a search by the party of 6 underneath the cornice. (Saw most of this from Circle Lake and heard firsthand the account from the touring party on the uptrack.)

    Another image from the incident above.                                                          Craig McFetridge Pic

Mitch Sulkers:
It went bluebird for day 3 @extremelycanadian AST2 yesterday in the Bumps. Winds shifted to moderate from the N asp at 0900 at treeline and redistribution into reverse loading began at ridgetops around 1900m. Winds went to strong in the Alp zones earlier from the same direction.
BTL little wind effect at all, with surface hoar to 7mm getting knocked down and pooling. Surface snow facetting rapidly in -8C high.
Soft windslabs at treeline ridges growing rapidly on lee features. We witnessed a skier remote from 80m on a NE asp at 1880m that failed from 10-65cm deep and rain into forest below, size 1. One photo shows shooting cracks to 15m upon closer investigation. Crown extended for @30m on a 40 degree slope.
We skied up to 35 degrees in lee terrain, concentrating on TL down for quality. Ski penetration to 45cm. We experienced no settlements, cracks, or whumpfs where we road, but saw a few skier accidentals on steeper convex roll overs at treeline.
Singing Pass Trail was fabulous!


Thar Peak Critical Loading: Feb 8, 2020

Hidden Peak-Callaghan: Feb 8, 2020

Circle Lake: Feb 8, 2020

Vista Bowl: Feb 8, 2020

Decker Glacier: Feb 8, 2020

Decker Glacier Skier accidental: Feb 8, 2020

Vantage Ridge: Feb 8, 2020


Avalanche rolls by Lodge: Alta

Lift Line at Vail: Feb 8, 2020


Avalanche on Minturn Mile outside of Vail; no victims reported: Colorado

Little Cottonwood canyon opens after historic 2-day closure: Utah

Super Snow Moon set to brighten the winter night sky: Weather

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