16 Mar 2021

March 16, 2021


      Sunrise Monday was at 07:25 Hrs. -8 with a 5-10 KPH South breeze.

      Early morning light.

      A few clouds in the am.


      There were some awesome turns to be had.

      Dry and consistent snow.

      Round House Roll

      Later in the afternoon, magical day.

Weather Observations for March 16, 2021 taken at 06:00 Hours.

2240 meters    -6, Winds were   5-10 KPH W--Horstman Hut
2180 meters    -8, Winds were 10-15 KPH NW--Whistler Peak
1860 meters    -8, Winds were   5-10 KPH ESE --Rendezvous 
1835 meters    -8, Winds were   5-10 KPH SE--Round House
1650 meters  -10,  ?0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 275 cm --Pig Alley
1570 meters    -8,  ?0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 200 cm--Catskinner
  660 meters    -6, Valley Temp, Max temp Yesterday was +5.6, 0.0 mm of precip yesterday.
Will update asap.

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


An upper ridge will bring a mixed bag of weather for today with sunny periods, a mix of sun and cloud, and some cloudy periods in a South Westerly flow aloft. The FL will spike at around 1200-1000 meters dropping back down to surface tonight. Wednesday will be overcast but dry as the offshore low moves closer to the coast and the high slides South. Cloudy and dry early Thursday morning with a front arriving later in the am with light precipitation in a Southerly flow. More of the same for Friday with a drying trend on Saturday. A weak frontal band is expected on Sunday. Guesstimates: 0 cm by Wednesday am, 0 cm by Thursday am, 12-18 cm by Friday am, 5-10 cm by Saturday am, 1-3 cm by Sunday am.

      GOES IR image from this am.

       Ridge of high pressure with a low to the North West. Unsettled weather for today.

       Westerly-South Westerly flow aloft.

      Low will send cloud cover our way on Wednesday.

      Low will send a front our way for Thursday.


    AC on Blackcomb- Sz 1 soft slabs and loose dry Xe Sc. Na Sz 1 loose dry. Some Sz 1 wet loose, pm

      Sudan Couloir.

     Sz 1 Na dry loose.

      Numerous Sz 1 dry loose Monday am.

      Dry loose with some minor pinwheeling on solar aspects on Blackcomb.

      Avalanche control on Whistler produced Sz 1-1.5 wind slabs/soft slabs. Xe, Xl, Sc. A few Sz 2 Xc.

      Sz 1.5 wind slab on Whistler.

      Sz 2 Xc on Flute.

From Sea to Sky avalanche advisory:

Avalanche Summary

Storm slabs and wind slabs were triggered by explosives and riders on Monday, with crowns 10 to 30 cm thick. Looking forward, wind slabs could still be triggered by riders on Tuesday. Sun-exposed slopes and cornices will weaken during daytime warming, increasing the likelihood of cornice failures and wet loose avalanche activity.

Snowpack Summary

Wind slabs may linger in steep, lee terrain features at treeline and alpine elevations from Sunday's 15 to 20 cm of snow with extreme southeast wind. Expect to find a hard melt-freeze crust on sun-exposed slopes and below around 1400 m, which will moisten with daytime warming and particularly if sunny skies prevail. Along ridgelines, cornices are large and will weaken with daytime warming.


      Dry faceted snow, in places 20-40 cm of nice pow.

     Top of Corona

      There were awesome turns to be had.

     The Peak Chair was busy.

      Rating at considerable on Monday.

      East Col of Blackcomb Glacier.

      Coming back into Blackcomb Glacier from Phalanx.


Musical Bumps: March 14, 2021


Powder Picker March 15, 2021: David Jones


Climber details close escape from avalanche that kills 1 in Nagano: Japan

Avalanche search teams seldom find people alive, causing rescuers to experience emotional "stress injury" over time: Colorado

Backcountry no place for complacency: Sun Peaks Independent News

Low-to-moderate danger doesn't mean 'no avalanche danger': Utah

High avalanche risk in the Northern Alps: Pistehors.com

        Submit your best avalanche photo for a pair of Goggles March 1-31, 2021. Sea to Sky Area.

                                                    Thanks to Volkl Canada for sponsoring.

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