February 11, 2023

       AVALANCHE ACTIVITY:

      Avalanche control on Whistler produced Sz 1-2 storm slabs. Sz 1-2 Cornice debris. Xe Xc Xl.

      Avalanche control on Blackcomb produced Some Sz 1 Xe Sc. A couple of Sz 1.5-2. 

       10-20 cm soft wind slabs reloading Friday pm.

      Soft wind slabs in the pm, High Test, Low Test. Propagating,  Easily Triggered.

      WEATHER YESTERDAY:

      Sunrise was at 07:32 Hrs Friday. -5 Deg C with a 10-40 KPH SE wind at 1835 m.

      10:00 Hrs. -5 Deg C with a 15-35 KPH SE wind at 1835 m. Snowing lightly.

      February 10, 2023. 12:00 Hrs. -4 Deg C with a 15-20 KPH SE wind at 1835 m.

      14:00 Hrs. -4 Deg C with a 50-70 KPH South wind at 2280 m.

      16:00 Hrs. -2 Deg C with a 15-30 KPH SSW wind at 1860 m.

Weather Observations for February 11, 2023 taken at 06:00 Hours.

2280 meters     -9, Winds were 25-35 KPH SSW--Horstman Hut

2180 meters     -8, Winds were 20-25 KPH SW--Whistler Peak

1860 meters     -8, Winds were 10-15 KPH SE --Rendezvous  

1835 meters     -7, Winds were     0-5 KPH SSW--Round House

1650 meters     -8, ? trace in 12 Hrs, 4 cm in 24 Hrs. Base? 222 cm--Pig Alley

1570 meters     -6, trace in 12 Hrs, 4 cm in 24 Hrs. Base 147 cm--Catskinner

  660 meters     -2, Valley Temp, Max temp Yesterday was +3.7, 7.1 mm of precip yesterday.

Will update ? ASAP.

      As of 06:00 Hrs this am we have a ?trace of new snow. Base ? 222 cm.

       As of 07:00 Hrs this am we have broken cloud and unlimited visibility.

FORECAST:

Dirty ridging for today with a mix of sun and cloud in a Northwesterly flow aloft. Possible isolated flurry this afternoon as the cloud cover increases. The FL is just below surface and could rise to 1500 m this afternoon dropping back down to surface tonight. Frontal band arrives Sunday am with light precipitation into Sunday night. Weak upper trough will bring mostly overcast skies with some intermittent flurries on Monday, a brief impulse Monday night. Dries out Tuesday with a cold ridge pushing into the zone. Sunny skies!! Ridge flattens on Wednesday with sunny breaks in the am, overcast in the pm. Possible flurry. Weak frontal band Thursday with periods of light precipitation. More light snowfall Friday and Saturday. Guesstimates: 0-trace by Sunday am, 11-14 cm by Monday am, 2-5 cm by Tuesday am, 0 cm by Wednesday am, 0-trace by Thursday am.

      GOES IR IMAGE from this am.

      WINDY IMAGE 2023/02/11. 05:00 Hrs.

             Dirty ridging for Saturday with above average temperatures.

      Mix of sun and cloud Saturday, cloud cover increases this pm. Chance of some flurries.

      North-Northwesterly flow aloft.

        Front arrives Sunday with periods of light precipitation. Above average temperatures.

      Periods of light precipitation on Sunday.

        Weak cold upper trough for Monday. Mostly overcast with flurries. 

      Flurries Monday, another short wave impulse arrives Monday night.

        Arctic Ridging with cold temperatures Tuesday.

      No precipitation Tuesday.

      Unsettled Wednesday, mix of sun and cloud in the am, overcast in the pm. Possible flurries.

      Low well off shore, cloudy with some flurries Thursday.

       INFORMATION & OBSERVATIONS:

      Snow line was around 900 m.

      Power flurries 09:00 Hrs. Mid Mountain.

      Serious power flurry 10:45 at the Horstman Hut. Decision Making?

      Nice turns in tree line, Lower Panorama .

      Pakalolo

      Cornice Noses were growing quickly.

      The road to the other Heaven!!

      Nice light Friday pm.

      Busy day on Lower Disease Ridge.

      Blackcomb Peak Couloir!!

      Nice tracks on Oboe!

      Unsettled at 16:15 Hrs.

FROM AVALANCHE CANADA:

Travel and Terrain Advice

Continue to make conservative terrain choices while the storm snow settles and stabilizes.

The best and safest riding will be on slopes that have soft snow without any slab properties.

Expect slab conditions to change drastically as you move into wind exposed terrain.

Be especially cautious as you transition into wind affected terrain.

Carefully evaluate steep lines for wind slabs.

Considerable--Sea to Sky Advisory top right sidebar.

LOCAL MIN REPORTS:

Upper Cerise River: Feb 10, 2023

Red Heather Storm Snow : Feb 10, 2023

SHORT CLIPS:

North Shore Mountain Conditions Report: Feb 10, 2023

Free Riding; Snowboard

Aggressive Riding: Sledding

Nice pow Turns: Sledding

Air Jordan: Fail

ARTICLES:

Multiple close calls in the Sea to Sky Corridor: Avalanches

Urban avalanche risk increases in Missoula in February: Montana

Mother-Daughter duo rescued from avalanche in Gurez: kashmir

Rocky Mountains blasted to control avalanche risk: Feb 10, 2023

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