16 Apr 2021

April 16, 2021

      YESTERDAY:

      08:00 Hrs Thursday April 15, 2021. +2 at 660 m. +4 at 1650 m. +4 at 1835 m. +2 at 2180 m.

     10:00 Hrs. +10 at 660 m. +8 at 1650 m. +7 at 1835 m. +2 at 2140 m.

      Glazed above the Poop Chutes Thursday am.

     12:00 Hrs. +18 at 660 m. +11 at 1650 m. +9 at 1835 m. +6 at 2180 m.

     14:00 Hrs. +21 at 660 m. + 14 at 1650 m. +12 at 1835 m. + 6 at 2180 m.


     Satellite image from same timeframe as above.

     16:00 Hrs. +22 in the valley. + 10 at 1650 m. + 11 at 1835 m. + 7 at 2180 m.


     18:00 Hrs. +20 in the valley. +10 at 1650 m. +10 at 1835 m. + 8 at 2180 m.


     20:00 Hrs. +18 at 660 m. +6 at 1650 m. +7 at 1835 m. +4 at 2180 m.


      Sunset was at 20:05 Hrs Thursday night.




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

2180 meters     +4, Winds were 0-5 KPH NNE--Whistler Peak 
1835 meters     +6, Winds were 0-5 KPH E--Round House
1650 meters     +3,  0 cm in 12 Hrs, 0 cm in 24 Hrs, Base 266 cm --Pig Alley
  660 meters      -1, Valley Temp, Max temp Yesterday was +22.6, 0.0 mm of precip yesterday.


      Sunrise was at 06:16 Hrs this am, clear skies and unlimited visibility.


FORECAST:

Dominate ridging pattern will continue to bring sunny warm weather for today in a Easterly flow aloft. Offshore flow will continue to bring warm tempreatures and an elevated FL. Cooler onshore flow will return by Saturday/Sunday. May see some clouds in the area on Sunday. Chance of some showers next Thursday, more on that as we get closer. Keep working on the suntan.


      GOES image from this am.


       Warm ridge still the dominate feature in the pattern. Sunny again today.





      Easterly flow aloft.

      High continues to bring warm sunny weather for Saturday.






       Looking warm with sunny weather for Sunday.


     High seems to be loosing size, may see some cloud development on Sunday.

      AVALANCHE ACTIVITY:

      Old activity on the Hurley. Pic taken on Wednesday.  Nasty looking cornices.     Mike Dempsey Pic

          Wet Loose Steep Creek Area. MIN report below.                                        GHelgeson Pic


      Old wet loose on Road Runner.


From Sea to Sky Avalanche Advisory:

Avalanche Summary

There have been several solar triggered wet loose avalanches reported in recent days, up to size 2.5. There have also been a number of cornice failures reported over the past week.

Looking forward, wet loose avalanches and cornice failures are expected to continue with sun and warm temperatures. The likelihood and potential size of these increases when temperatures do not dip below freezing overnight, and avalanche activity will likely begin earlier in the day with each subsequent warm day.

Wind slabs may still be possible to trigger on high elevation north aspects.

Snowpack Summary

The snow surface may be a crust, but high freezing levels on Thursday night may mean that the snow surface does not freeze in some areas. Sunshine and rising freezing levels are expected to quickly soften any crusts, resulting in a moist or wet snow surface.

On high elevation north aspects, soft snow or wind slabs may be found. 

Cornices are large and looming along ridgelines. Their release is unpredictable, requiring a large berth if you're travelling above or below them. Sun and warm temperatures will increase the chances of cornice releases, especially when temperatures remain above zero overnight.



      INFORMATION & OBSERVATIONS:

      Nice looking morning in Pemberton. 0 Deg C at 07:00 Hrs. High Wednesday was + 24.6 Deg C.


     Not much activity on Mt Currie considering the temperatures.

      Snowmobiing on the Hurley Wednesday. No one around.                                 Mike Dempsey Pic

      Some cornices are huge and should be avoided.                                                  Mike Dempsey Pic

     Just before sunset in Pemberton. High yesterday was +26.4 Deg C.


FROM SEA TO SKY MIN REPORTS:

Schmooey Steep Creek: April 15, 2021


VIDEOS:

Wet snow avalanches: Nasty Ride


ARTICLES:

Avalanche Fatalities so far this season in Europe 2020/21: EAWS

Climbers attempting ascent on Mount Neacola swept down mountain by avalanche: Alaska

Warming temperatures, precipitaion prompt avalanches in Dowtown Juneau: Alaska

How to identify dangerous avalanche terrain and safe zones in the Backcountry: The Inertia

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