March 11, 2023

       AVALANCHE ACTIVITY:

      Two snowshoers injured in an avalanche in Austria. 9 involved.  Article below.                      Net Pic.

      Loose dry sloughing 2023/03/09. Nice looking skiing Conditions.               Phantom Heli Pic

      No new avalanches observed on Whistler.

      No new avalanches observed on Blackcomb.

      Old Fx lines from Sa Sz 1 on Triplex from Thu. 3 guests hiking into permanent closure. GD Pic

      How much weight can your roof/deck support?? Big problem in Tahoe! Mathematics<Click!!

      WEATHER YESTERDAY:

       Sunrise Friday was at 06:37 Hrs. -9 Deg C with a 5-10 KPH South breeze.

      08:00 Hrs. -10 Deg C with a 10-25 KPH SE wind at 2280 m.

     10:00 Hrs. -7 deg C with a 10-20 KPH SE  wind at 1860 m.   S-1

      From same time frame as above image. Flurries at 1860 m.

      Friday March 10, 2023. 12:00 Hrs. -6 Deg C with a 0-5 KPH variable breeze at 1835 m.

      14:00 Hrs. -6 Deg C with a 0-5 North breeze at 1860 m.

      18:00 Hrs. -10 Deg C With A 5-10 KPH ESE wind at 2280 m.

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

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

2180 meters     -9, Winds were 40-55 KPH SE--Whistler Peak

1860 meters     -8, Winds were 10-25 KPH SE --Rendezvous  

1835 meters     -8, Winds were   5-20 KPH SE--Round House

1650 meters     -7, 2 cm in 12 Hrs, 2 cm in 24 Hrs. Base 224 cm--Pig Alley

1570 meters     -6, 2 cm in 12 Hrs, 2 cm in 24 Hrs. Base 155 cm--Catskinner

  660 meters     -1, Valley Temp, Max temp Yesterday was +6.0, 0.0 mm of precip yesterday.

       As of 06:00 Hrs this am we have 2 cm of new snow. 0.7 mm in precip gauge. Base 224 cm.

       As of 07:00 Hrs we have a few breaks in the cloud with unlimited visibility and snowing very lightly.

FORECAST:

A weak upper trough will bring periods of light snow today in a Westerly flow aloft. Some sunny breaks early this am becoming cloudier. Periods of light snow should start soon, mix of sun and cloud this pm with flurries in the mix. Dries out tonight. The FL is just below surface and will rise to around 1000 m this afternoon, dropping back below surface tonight. Sunday will see a few am flurries with a frontal band arriving in the pm with light snowfall. Will be warmer than it has been. Will talk about the FL tomorrow. Frontal band continues into Monday am with light/moderate precipitation with strong winds. Dries out around noon on Monday with a mix of sun, cloud, and flurries. Dries out later in the pm with cooler temperatures. Unsettled Tuesday with weak dirty ridging. Ditto for Wednesday with some flurries in the mix. Ridge strengthens for Thursday with mostly sunny skies and dry weather. Guesstimates: 1-4 cm by Sunday am, 12-16 cm by Monday am, 2-5 cm by Tuesday am, trace-1 cm by Wednesday am, 1-2 cm by Thursday am, 2-5 cm by Friday am.

      GOES IR IMAGE from this am.

      WINDY IMAGE 2023/03/11. 05:00 Hrs.

       Low off the coast will send a weak trough with a quick impulse of snow. Seasonable temps.

      Periods of light snowfall on Saturday.

      Westerly flow aloft.

       Low well to the North, atmospheric river to the South. Warmer.

Flurries Sunday am, light precipitation in the pm continues into Monday am.

       Upper trough brings strong winds and light precipitation into Monday pm. Unsettled in pm.

     Light precipitation in the am. Unsettled Monday pm with mix of sun, cloud, flurries.

       Weak broad upper trough will bring an unsettled day on Tuesday. Cooler.

      Mix of sun and cloud for Tuesday with some isolated flurries. 

      Dirty ridging Wednesday with some isolated flurries.

      Ridge strengthens with mostly sunny skies on Thursday. Warms up.

      INFORMATION & OBSERVATIONS:

      Roof avalanches may happen with the next storm.  Amazing tensile strength in ice and snow.

      Snow flurries 10:30 Hrs at 1835 m.

      Wind affected snow below Horstman Glacier.                                                  GD Pic

     Thin Cornice Tabs

      Moments of nice light amongst the cloud.

     Some sculpted Sastrugi <Click for explanation with Stellar Plates, <Click if you want to know.

      Airtime!

      Isolated flurries ended around noon. Many stellar plates falling. More flurries in the pm.

      Glimpses of sun in the afternoon.

     Some awesome late afternoon light.

      Flurries at closing time. Very cool roof cornices. Growing by the day!

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.

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

LOCAL MIN REPORTS:

Blackcomb Backcountry: March 09, 2023

SHORT CLIPS:

North Shore Avalanche Conditions: March 10, 2023

Buddy system works: Could save your life

Keeping the tracks clean: Cool Perspective

Slam Bam: No Thank You Man

Bad Jump: Ouch

ARTICLES:

Snowshoers hit by avalanche, 2 sustaining injuries near Salzburg: Austria

Sugarloaf skier rescued from rare East Coast tree well: Maine

Sea to Sky Snow Conditions-March 10, 2023: Zenith Mountain Guides

'Pineapple Express' winter storm pummels: California

Provo Canyon closed due to massive avalanche during mitigation efforts: Utah

Accident Summary-1 Fatality in Utah, 2023/03/09: Upper Webber canyon

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