28 Nov 2016

November 28, 2016

Avalanche Activity:

    Austrian Avalanche has claimed two lives, story in article section.---Net Pic

Avalanche control yesterday on WB produced mostly Sz 1 vssl in top 20-30 cm, Xe.
Some size 2 ssl with avalauncher (Xl) and Xc.

    Low valley cloud Sunday at noon.

    Mostly cloudy Sunday morning.

    There were some breaks on Sunday.

    By 16:00 Hrs it was snowing lightly.

    Skiing in Seventh Heaven Sunday.                                                                  Toby Salin Photo

Weather Observations for November 28, 2016: taken at 06:00 Hours.

2240 meters    -9, Winds were 15-20 KPH WSW--Horstman Hut Station
2180 meters    -6, Winds were 10-20 KPH SW   --Whistler Peak
1860 meters    -7, Winds were 10-15 KPH SE    --Rendevous
1835 meters    -6, Winds were   5-10 KPH SW   --Roundhouse
1650 meters    -6, 6 cm of new snow, 6 cm in 24 hrs, 194 cm Base, RH 96%  --Pig Alley
1550 meters    -5, 5 cm of new snow, 5 cm in 24 hrs, 135 cm Base        --Catskinner 
  660 meters     0, Valley Temp, Max Temp Yesterday was +2.3. 4.5 mm of Precip recorded yest

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

    Looking like an awesome day, high pressure is here for the day. Image from 07:30 Hrs.

For the Forecast:

The cold front went East last night with unsettled weather in its wake. The FL should hover around 800 meters in a North Northwesterly flow aloft. Expect some ridging today as a weak high pressure develops into early Tuesday with cooler temperatures. A weak front will likely push through on Tuesday afternoon, with unsettled weather for Wednesday.  More weak ridging for Thursday. Friday will likely be overcast with light snow.  Long range we are looking at a strong low off the coast in a Northwesterly flow for the weekend. More on that as we get closer. Timing of the weak front expected Tuesday/Wednesday is questionable. Guesstimates: 1-2 cm possible by Tuesday morning, 10-15 cm by Wednesday morning.

    Ridge will develop later today.

    Unsettled  early Tuesday morning with a front arriving sometime in the morning.

    Front forecasted for Wednesday will likely arrive on Tuesday.

    Drier on Thursday.


Update on the avalanche death in Austria: Mountain Journey

Quake induced avalanche has killed a Nepal Guide: CTV News

Siachen Avalanche has killed 4 Indian Soldiers: Kashmir


November 27 at 8:48am

Snowpack/field obs from Paul Ridge yesterday... A bit incomplete - likely a few more things I could have taken note of/ more detail of but here's what we found! 

Snow profile: Paul Ridge 16.11.26 
Slope inclination: 15 degrees HS: 180cm HN24: 45cm Sky: Obscured 
Freezing level: overnight was approx. 600-700m, rising to 1000m-1100m by the end of the day Wind: light SSW 
Footpen: unlimited (sweet!) 150cm down Ski pen: 40cm 
Temperature trend: R (1-5 degrees in the past 3 hours - noticeable primarily and lower elevations than the Red Heather hut) 

Snowpack Obs: Dug down 150cm and did not see 1112 crust. 
Did both a compression test and a shovel shear test. 
Elevation: approx 1500m 
Aspect: South 

Dug down 150cm and did not see 1112 MFCr 
30cm F on top of 40cm 4F then 4F to depth of pit 
Compression test results: CTE7 down 30cm, CTM16 down 40cm on density change, CTH22 down 132cm. Quickly did a deep tap test on snow beneath 132cm but it didn't produce any results. 
Shovel shear test results: STE SP down 30cm and down 40cm and uneven break at 132cm. 

The layers were partially decomposed precip particles - presumably more rounded now given warm temps of snowfall. 

A few quick notes: would've expected deeper snowpack on the N side due to high S winds lately. Saw some 40cm crowns in the trees on steeper slopes in the trees which did not leave much debris. Many skiers “comfortably” skiing more open slopes on the North Side of Round Mountain. Did not see many other pits being dug, however not many were skiing on the same area as us. 

November 27 at 9:34pm

Cayoosh Sunday Nov 27. Still a bit bony in the boulder field. Higher above the lake was decent skiing. HS 150. The rain crust was down about 125.

    Some sunny breaks on Sunday.

    A break in the low level cloud.

    Freezing level just a little bit higher than the village.

No comments:

Post a Comment