20 Sept 2021

September 20, 2021

      PAST WEEK:

      Monday September 13, 2021. 12:00 Hrs. +5 Deg C at 1835 m. +15 Deg C in the valley.

      Tuesday September 14, 2021. 12:00 Hrs. +6 Deg C at 1835 m. +11 in the valley.

      Wednesday September 15, 2021. 12:00 Hrs. +4 Deg C at 1835 m. +15 in the valley.

      Thursday September 16, 2021. 12:00 Hrs. +5 Deg C at 1835 m. +10 in the valley.


      Friday September 17, 202. 12:00 Hrs. 0 Deg C at 1835 m. +6 in the valley.


      Rainfall amounts in the Sea to Sky Corridor Friday:
      West Vancouver           86.7 mm
      Squamish.                    87.0 mm
      Whistler.                      54.6 mm
      Pemberton.                  51.7 mm


      Saturday December 18, 2021. Noon flurries. +1 Deg C at 1835 m. +10 in the valley.

      Sunday September 19, 2021. 12:00 Hrs. +1 Deg C at 1835 m, +10 in the valley.


Weather Observations for September 20, 2021 taken at 06:00 Hours.

2180 meters      -2, Winds were 10-15 KPH WSW--Whistler Peak 
1835 meters     +1, Winds were   5-10 KPH SW--Round House
1650 meters     +1,  0.6 mm in 12 Hrs, 2.6 mm in 24 Hrs --Pig Alley
  660 meters     +7, Valley Temp, Max temp Yesterday was +12, 2.2 mm of precip yesterday


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




FORECAST:

A weak warm front to the North will bring mostly cloudy weather for today in a Westerly-North Westerly flow aloft. The freezing level is in the 2000 m zone rising to around 3500 m as the warm front pushes through later today. Chance of some isolated showers today.  Weak ridging for Tuesday will bring a mix of sun and cloud with seasonable temperatures. A mix of sun and cloud for Wednesday with a very quick moving trough pushing through, may see periods of light rain. Weak ridging Thursday into Friday will bring a mix of sun and cloud. Some models have a weak front push through on Saturday with some showers and the odd sunny break. Sunday at this time looks cloudy with the odd sunny break. Getting harder to look long range as we get into a fall pattern of unsettled weather. Guesstimates: 0-trace mm by Tuesday am, 0-trace by Wednesday am, trace-3 mm by Thursday am, 0 mm by Friday am, 0 mm by Saturday am, 0-2 mm by Sunday am, 0 mm by Monday am.


Weather update Wednesday September 22, 2021. Looks like the high will be replaced by a trough Saturday, some models are calling for a wet Sunday and Monday. Fall weather patterns can change quickly!!! 


     GOES image from this am.


      Low will send a warm front our way today with mostly cloudy skies.






      West-North West flow aloft.

      Weak ridging Tuesday with a mix of sun and cloud. Slim chance of a shower.







Trough pushes through Wednesday am, but likely unsettled by the afternoon.



      Weak high pressure for Thursday with a mix of sun and cloud. 




      High pressure for Friday, could be mostly sunny by the afternoon.

      Possibility of a trough pushing through Saturday afternoon with some light rain, unsettled.


      Sunday could be mostly cloudy with the odd sunny break, but that is 6 days away.


     AVALANCHE ACTIVITY:

      Recent Na slide in the Hector Mountains, NZ.                                                     Tony Phillips Image

      New Zealand Avalanche Advisory


      INFORMATION & OBSERVATIONS:

      Wedgemount Lake Monday am. Valley layer took some time to dissipate.

      Noon Tuesday. +11 Deg C in the valley. 7.4 mm of rain recorded at 660 m on September 14th.

      Large Rock fall on Phalanx Peak. Sometime this summer. Anyone have an idea? Image Sept 6th.

      This image taken near the end of August. Corona Bowl                            Drew Hetherington  Pic

      Mostly a nice day on Wednesday. High in the valley of +16 Deg C. 3.4 mm recorded at 660 m.


     Busy day in the park Thursday! High in the valley was +15.4 Deg C.


     Friday sunrise was at 06:51 Hrs. 0 Deg C at 1835 m. -2 at the peak.

      Unsettled Saturday 07:30 Hrs. +1 at 1835 m. -2 at the Horstman Hut, 2240 m. 

      Saturday 16:30 Hours at 1860 m, +3 Deg C. Sun and warm temperatures melted the snow quickly.



    Sunday sunrise 06:54 Hrs. +1  Deg C at 1835 m. Received 14 mm of rain in the valley Saturday.

      Cheakamus Lake Sunday am. Trails have been closed due to an aggressive bear since June


VIDEOS:

Over a cliff, in an: Avalanche


ARTICLES:

Avalanche risk keeps Milford Sound Road closed: New Zealand

Researchers, climbers watch snowpack quickly melt, exposing glacier's retreat: North Cascades

Austrian Government in court over reaction to Covid-19 in Ischgl: Planet Ski

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