29 Jan 2021

January 29, 2021

      YESTERDAY:

      Sunrise Thursday, 07:51 Hrs. -9 with a 5-10 KPH NNE wind.

     First light Thursday am.

      Early start.

     Mostly cloudy for most of the morning.

     Some breaks to the North.

      Nice turns in the glacier, a bit denser than Wednesday.

      Thursday Jan 28, 2021. 14:30 Hrs. -7 with a 5-10 KPH NNE breeze. -1 in the valley.

      Some nice light later in the day on the Weekend Chutes.

      Some periods of blue before sunset.


Weather Observations for January 29, 2021 taken at 06:00 Hours.

2240 meters    -11, Winds were 15-20 KPH S--Horstman Hut
2180 meters    -10, Winds were 10-20 KPH SE--Whistler Peak
1860 meters      -8, Winds were   5-10 KPH SE --Rendezvous 
1835 meters      -8, Winds were   5-10 KPH SW--Round House
1650 meters      -6, 1 cm in 12 Hrs, 2 cm in 24 Hrs, Base 220 cm --Pig Alley
1570 meters      -6, 1 cm in 12 Hrs, 1 cm in 24 Hrs, Base 152 cm--Catskinner
  660 meters      -4, Valley Temp, Max temp Yesterday was + 0.3, 0.0 mm of precip yesterday.



      As of 07:00 Hrs this am we have overcast skies, unlimited visibility and snowing very lightly..


FORECAST:

 Unsettled weather this morning, increased cloud cover later this morning in a Southerly flow aloft. Will see some light snow tonight as the next front arrives on the South Coast. The FL could rise to just above surface today. Saturday will see a welcome impulse of precip with periods of light to moderate snowfall and moderate alpine winds. Another front on Sunday with a bit more precip than Saturday. Another impulse Monday with less precip but cooler temps. Guesstimates: 1-4 cm by Saturday am, 15-20 cm by Sunday am, 15-25 cm by Monday am, 8-12 cm by Tuesday am.


      GOES IR image from this am.


      Approaching font will bring mostly overcast skies for today, FL hovering around surface.





      Front will arrive this evening with light snow.


      Low will send frontal bands with impulses of snow Saturday, FL might get up to 1000 m.

  



   Upper trough will send steady light to moderate snowfall Sunday, FL might get as high as 1100 m. 

     Could get as much as 30 mm of precip Sunday.

      AVALANCHE ACTIVITY:

      A lucky Dad rescued after a 160 minute burial in an avalanche while snowshoeing, France.

      Two hikers have died in an avalanche on Mount Olympus, Greece. Article below.         Net Pic

      No new avalanche activity reported on Whistler yesterday.

     No new avalanche activity on Blackcomb.

      A few loose dry sluffs on east facing steep terrain.


From the Sea to Sky Avalanche Advisory:

Avalanche Summary

There were a few reports of size 1 human triggered avalanches on steep, wind loaded alpine features on Thursday.

On Tuesday and Wednesday, there were a few reports of natural and human-triggered size 1 avalanches, as well as a few size 1 explosives triggered wind slab avalanches in the alpine on Tuesday.

Snowpack Summary

10-20 cm of recent fresh snow sits on firm, wind affected snow at upper elevations, on surface hoar in sheltered areas, on a melt-freeze crust below 1900 m, and on a sun crust on south-facing slopes. Recent winds have redistributed much of this new snow, creating wind slabs in leeward terrain, and stripping the new snow off of some windward slopes.

A crust from early December may be found around 200 cm deep in the snowpack. In shallow rocky areas, recent test results suggest that it may still be possible to trigger this layer. In deeper snowpack areas it has shown no recent results and appears to be unreactive in these areas.



     INFORMATION & OBSERVATIONS:

      West Col of Blackcomb Glacier.

      Wind has scoured out the rock in many places.

    Despite the fact that the crowds on Blackcomb were like the 2010 Olympics the backcountry is busy.


      Man made snow on a deciduous tree.

      Some awesome breaks around noon.

      Looking Southwest later in the afternoon.

      Trace of new snow recorded at 1570 meters yesterday at 14:30 Hrs. Base 153 cm.

     Still nice snow in Sudan Couloir.


LOCAL AVALANCHE CANADA MIN REPORTS:

Sky Pilot: Jan 27, 2021

Squamish Valley East Side: Jan 27, 2021

Cayoosh Pass: Jan 28, 2021

Freda Basin Ridge: Jan 28, 2021

Mulligan/Anif: Jan 28, 2021

North Shore Avalanche Hunting: Jan 28, 2021

Paul's Powder Playground: Jan 28, 2021


VIDEOS:

Snowshoers Rescue: France

Powder Picker Jan 28, 2021: David Jones


ARTICLES:

Two climbers have died in an avalanche on Mount Olympus: Greece

Family rescued after 160 Minute burial in avalanche while snowshoeing in France: Happy Outcome

Wolfhound (mobile phone detector) finds avalanche victims: France

A snowstorm is expected to hammer the Sea to Sky this weekend: Avalanche Advisory

Special avalanche warning in effect across BC South Coast: SPAW

Extreme caution urged as more snow falls on unstable base: Switzerland

Avalanche danger is highest in parts of the Alps: 5 out of 5

Snow plow driver pushed into a river by an avalanche: California

Roof avalanche buries teen for hours, rescued by Fire Dept. & Paramedics: Truckee, CA

Strange death of Russian Mountaineers may be due to unusual avalanche: Dyatlov Pass Incident



   Marker Goggles for best avalanche picture Jan 19- Jan 31, 2021 in Sea to Sky Area.

      Sponsored by Volkl Canada  

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