4 Oct 2021

October 4, 2021

      PAST WEEK:

      Monday September 27, 2021. 12:00 Hrs. +2 Deg C at 1835 M. 

      Tuesday September 28, 2021. 12:00 Hrs. +1 Deg C at 1835 m.

      Wednesday September 29, 2021. 12:00 Hrs. 0 Deg C at 1835 m.

      Thursday September 30, 2021. 12:30 Hrs. +1 Deg C at 1835 m.

      Friday October 1, 2021. 12:00 Hrs. +2 Deg C at 1835 m.

      Saturday October 2, 2021. 12:00 Hrs. +3 Deg C  at 1835 m.

      Sunday October 3, 2021. 12:00 Hrs. +2 Deg C at 1835 m.



Weather Observations for October 4, 2021 taken at 06:00 Hours.

2180 meters      -1, Winds were 20-30 KPH S--Whistler Peak 
1835 meters      -1, Winds were   5-15 KPH SE--Round House
1650 meters      -1, 0.0 mm in 12 Hrs, 0.0 mm in 24 Hrs --Pig Alley
  660 meters     +4, Valley Temp, Max temp Yesterday was +13.6, 2.2 mm of precip yesterday


       As of 07:00 Hrs this am we have broken cloud with unlimited visibility at 1835 m.



FORECAST:

Mostly cloudy this am with an upper trough moving into the area later today with a cold front in a South Westerly flow aloft. Could see some light showers later in the day. The freezing level is around 1500 m this am and some models are expecting it to stay cold most of the week.  Tuesday will see periods of light rain as the upper level low pushes through. The slow low will bring unsettled weather into Wednesday with a weak ridge trying to push in, may see some showers?  Weak ridging is forecasted for Thursday with a sunny morning, mix of sun and cloud in the afternoon with cold temperatures. Looking unsettled Friday at this time with some showers. Saturday will likely see an upper trough push in with periods of light/moderate precipitation. Sunday will likely be wet as well with unsettled weather.  Timing will likely change.  As always, time will tell!!! Guesstimates: 5-8 mm by Tuesday am, 8-15 mm by Wednesday am, 0-trace by Thursday am, trace-1 mm by Friday am, 0-1 mm by Saturday am, 10-24 mm by Sunday am, 6-12 mm by Monday am.


      GOES image from this am.

      Low to the North will move down the coast today, increasing cloud cover, front arrives later.






      South Westerly flow aloft for today.


      Low will bring periods of light precipitation for Tuesday.







       Low still the main influencer for Wednesday but high is migrating East. Colder Temps.





      High pushes in for Thursday.







      Saturday may be a wet one, some discrepancies in the models.


      Sunday has the potential to be wet, time will tell!!


      AVALANCHE ACTIVITY:

      An avalanche on Mt Trishul has killed 4 Mountaineers, 2 missing.  Article below.                Net Pic


.       Glide Avalanche near Mt Cook. Oct 3, 2021.                                                       Will Image

      Wet Loose Craigieburn, NZ.                                                                            Anna Loomes Pic


       Recent wet loose near Wanaka, NZ.                                                                Dominic Harrison Pic

      Recent slab avalanche, Arthur's Pass, NZ.                                                          Luke Whitehead Pic

      Sz 1 Skier involvement near Torgariro, NZ.                                                                 Andrew Pic

      New Zealand Avalanche Advisory


      INFORMATION & OBSERVATIONS:

      Noon Monday, +8 Deg C in the valley. Raining lightly. 24.1 mm recorded at 660 m Monday.


      Sunrise Tuesday 07:07 Hrs. 0 Deg C at 1835 m.

      Tuesday afternoon. +10 Deg C at noon. 6.9 mm of rain at 660 m Tuesday.

      Wednesday noon, wet. +7 Deg C in the valley. 10.7 mm recorded at 660 m 0:00 Hrs-24:00 Hrs.

      Thursday 12:30 Hrs. +10 Deg C in the valley. 24.1 mm recorded at 660 m.


      Friday sunrise, 07:12 Hrs. -1 Deg C at 1860 m.

      Low moving in Saturday, cloudy, looks like the weekend has changed from 5 days ago.

      Horstman Glacier Friday afternoon. High of -0.2 Deg C at 2240m. 2.4 mm recorded at 660 m.

      Saturday morning, 08:30 Hrs. -2 at 2240 m. 

      Saturday Noon, +9 Deg C in the valley. 2.5 mm recorded at 660 m. 0-24 Hrs.

      GOES image from the same time frame as above.

   Sunday Noon. Busy day in the bike park. +10 Deg C in the valley. 2.2 mm recorded early Sunday am.


VIDEOS:

Early season Avalanche: Alaska

Avalanche: K2

A Hazard and Driver of Landscape Change: Snow Avalanches


ARTICLES:

Navy's Mountaineering team swept away by an avalanche; 4 recovered: India

The 2020/2021 season among the most tragic in the last 50 years: Avalanche Accidents

"Unprecedented" avalanche risk in September: Iceland

The first avalanches in Flateyri: Iceland

Backcountry Ski Gear-The Supply and Demand Tango: WildSnow

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