March 12, 2023

      AVALANCHE ACTIVITY:

     Fifth heli-skier triggered fatal avalanche near Panorama 2023/03/01. Article Below.     RK Heli Pic

      Avalanche control on Blackcomb produced some Sz 1 dry loose Xl in Lakeside. 

      Cornice tabs dropping onto slope.

      Cornice tabs dropping onto roof.

     No new avalanches on Whistler Sc loose dry sluffs. 

      Cornice control Horseshoe 7. Xc  Large chunks in the bowl.

      Sz 1.5 Na Tszil, Pemberton.  MIN Report below.                                             Banderson Pic

      WEATHER YESTERDAY:

      Sunrise Saturday was at 06:35 Hrs. -8 Deg C with a 10-20 KPH SSE wind at 1860 m.

      08:00 Hrs. -8 Deg C with a 10-15 KPH ESE wind at 1835 m.

       10:00 Hrs. -5 Deg C with a 10-20 KPH SSW wind at 1860 m.  S-1

     Saturday March 11, 2023. 12:00 Hrs. -6 Deg C with a 10-20 KPH SE wind at 1835 m. S-1

      14:00 Hrs. -3 Deg C with a 10-25 KPH South wind at 1860 m.

      16:00 Hrs. -4 Deg c with a 10-20 KPH SSW wind at 1860 m.

Weather Observations for March 12, 2023 taken at 06:00 Hours.

2280 meters   -10, Winds were 35-45 KPH S--Horstman Hut

2180 meters     -9, Winds were 55-80 KPH SE--Whistler Peak

1860 meters     -7, Winds were 10-25 KPH SE --Rendezvous  

1835 meters     -7, Winds were 15-30 KPH SE--Round House

1650 meters     -5, 8 cm in 12 Hrs, 13 cm in 24 Hrs. Base 237 cm--Pig Alley

1570 meters     -5, 7 cm in 12 Hrs, 9 cm in 24 Hrs. Base 161 cm--Catskinner

  660 meters     -1, Valley Temp, Max temp Yesterday was +4.1, 0.3 mm of precip yesterday.

      As of 06:00 Hrs we have 8 cm of new snow. 3.2 mm in precip gauge. Base 237 cm. 

      As of 07:00 Hrs we have broken cloud, variable visbility and snowing lightly.

FORECAST:

Unsettled this am with increase in cloud cover with main frontal band arriving this afternoon in a Southwesterly flow aloft. The FL is presently just below surface and hopefully will not climb above 1500 meters tonight. May go higher briefly, time will tell. Drops back down below surface Monday evening. Light precipitation begins this am with winds ramping up and moderate precipitation by early Monday am. Front pushes through quickly with unsettled weather in its wake. Mix of sun and cloud by Monday afternoon with flurries. Weak upper trough for Tuesday with a mostly overcast day, some morning sunny breaks. Flurries Tuesday night. Dirty ridge for Wednesday with a mix of sun and cloud. Overcast Thursday with a dry day with clouds pushing in. Ridge strengthens Friday with sunny skies and above average temperatures. Weak short wave trough for Saturday with some flurries. Guesstimates: 15-20 cm by Monday am, 1-3 cm by Tuesday am, trace-1 cm by Wednesday am, 0-trace by Thursday am, 0 cm by Friday am, 0 cm by Saturday am.

      GOES IR IMAGE from this am.

      WINDY IMAGE 2023/03/12. 05:00 Hrs.

        Low to the North, pineapple express to the South. Windy and warmer by tonight. 

      Dry in the am on Sunday, frontal band arrives around 13:00 Hrs this pm. Light/moderate precipitation.

      Southwesterly flow aloft.

       Front pushes through early Monday am with a mix of sun and cloud with flurries in the pm.

      Moderate precipitation in the am Monday, flurries in the pm.

        Mostly overcast Tuesday with some sunny breaks and pm flurries. Cooler.

      Dry with some flurries Tuesday night.

       Cool dirty ridging Wednesday with a mix of sun and cloud. Dry.

      No precipitation expected on Wednesday.

      No precipitation Thursday, may see a mostly cloudy day. More on that as we get closer.

      Ridge strengthens Friday with sunny skies. 

     INFORMATION & OBSERVATIONS:

      08:00 Hrs. some patches of blue but impulse of snow is pushing in.

      Overcast with flat light 09:15 Hrs.

      Power Flurry for about 30 min.

      Powder to the People!

      Wind direction sensor on Spacer 11 P 2 P.

      Power flurries to patches of blue in minutes.

     Sunny break 13:30 Hrs.

     Stellar Conglomerates

      Mid mountain cloud layer lifting. 14:30 Hrs.

      Thick mid mountain cloud in the afternoon.

      16:30 hrs, mid level cloud was shifting around. Up and down, back and forth.

      Recent Profile.

FROM AVALANCHE CANADA:

Travel and Terrain Advice

Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.

Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.

Minimize your exposure time below cornices.

The more the snow feels like a slurpy, the more likely loose wet avalanches will become.

MODERATE--SEA TO SKY ADVISORY available top right sidebar.

LOCAL MIN REPORTS:

Oboe: March 11, 2023

Jet Wilson: March 11, 2023

Tszil Na Wind Slab: March 11, 2023

SHORT CLIPS:

Snow Cross in Germany: Mtn Biking

One way of mitigating a: Roof Avalanche

Slope test: Ripper

Synchronized: Skiing

MSA Mountain Conditions Report: March 11, 2023

ARTICLES:

Three people injured in an avalanche, SAR teams could not fly: Slovakia

Fifth skier triggered fatal slide near Invermere March 1, 2023: Avalanche Canada Report

Rare avalanche death highlights dangers as skiers venture into Uintas: Utah

Wet,Wet,Wet: Alpine Meadows

Mountain Conditions Report -Duffy Lake: March 10, 2023

All of Lake Tahoe at risk of 'wide spread avalanche activity': California

Avalanches damage homes, prompt flood concerns in Hailey: Idaho

Some awesome facebook posts from: Avalanche Canada

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