Hakuba Now daily snow and weather - Sunday 31st January 2010

Hakuba Now (Archive Report)

Independent and trustworthy daily snow and weather reports from Hakuba region, Japan
ARCHIVE REPORT: Posted at 9:56am on Sunday 31st January 2010
Current weather conditions
Observed fresh snowfall
weather condition
Mostly clear with some cloud
Base temp:
0°C

Top temp:
0°C
Precipitation Wind Visibility
precipitation condition
-
wind condition
Moderate to low from NW
Clear
This report
Sunday 31st January 2010, 9:56am
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Saturday 30th January 2010, 14:10pm ---
Friday 29th January 2010, 9:33am ---
Thursday 28th January 2010, 12:22pm ---
Wednesday 27th January 2010, 8:11am ---
Tuesday 26th January 2010, 9:17am ---
Monday 25th January 2010, 10:48am ---
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Archive report: Posted at 9:56am on Sunday 31st January 2010
The latest Hakuba Now report can be found here

Hakuba is again today sitting under clear skies with the sun beaming down on us. Almost spring like at the bottoms of the resorts today with slushy corn snow and soft packed powder to be found, much the same as yesterday. You can expect nice groomers this morning, icier and drier conditions up top and even some good shaded areas may have some pockets of fresh powder.

The temperature today is getting fairly warm with a max of 5 degrees, with light to moderate winds coming in from the north west. The slopes over the past couple of days have been fairly busy, getting quieter towards the afternoon as the weekend crowds head home.

Temperatures will be dropping throughout the week and with it bringing some snow, by Wednesday there should be more snow to keep everyone happy!

Avalanche info:

On investigation into the Alpine yesterday during extreme wind conditions it was more than obvious that we had intense blowing snow at ridge top and even below ridge line. The South East aspect are heavily loaded and scouring down to the rain crust of the 28th on wind ward slopes. Once again great spacial variation across the mountain. Melt Forms were not found in the upper 120 cm of the snow pack at 2000 metres in a heavily loaded lee slope, however, when probed a lower density layers were found at 130cm and 160 cm down. The 160 cm layer was right above a thin melt-freeze crust. Compression Test at this location (very difficult in the extreme winds) found a CTM Resistant sheer at 50 cm down and further CTH breaks and resistant planar sheers below this in wind loaded snow.

At lower elevation (1450 m) the Rain layer of the 28th was apparent below the new HST storm snow and reactive in Compression Tests on NE aspect CTMPC(12) down 35cm on DF size 1. The rain layer at this elevation was still moist and retaining heat with temperature of 0*C. There was also results above the Jan 21 Rain Crust CTHSP(22) down 90 on DF / RD size 1. The most concerning find was the moist melt forms in the lower half of the snow pack to the ground that will not be freezing as the overall temperature of the snow pack is hovering around 0*C. This lower moist snowpack is resulting in large glide cracks seen at lower elevations and at the ski resorts. Todays warming temperatures and strong solar radiation will not being doing anything to alleviate stresses on these lower layers and could result in slides to ground on steep solar radiated slopes around rocks or trees at lower elevation (1500m ~ 800m).

Travel Advisory:

Use extreme caution when crossing solar radiated lee slopes and cross loaded slopes in steep tensioned terrain or avoid all together during periods of strong solar radiation and mild temperatures. Stay to supported and simple terrain away from cornices and convexities. Watch out for solar radiated hazards from above on traverses out in the valley bottoms and holes over creeks that may be opening up after recent rain and warm temps.

Hazard Rating:

Alpine: Considerable (Cornices, Lee side loading, Steep solar radiated rocks)

Tree Line: Considerable (Cornices, Lee side loading, Steep solar radiated rocks, trees and convex rolls)

Below Tree Line: Considerable (General warming of entire snowpack, Steep solar radiated slopes)

Official resort snow depths on 31st Jan 10:

Happo-one:
110cm (Shirakaba)
125cm (Sakka/Kitaone)
300cm (Kurobishi/Usagidaira)
Hakuba Goryu:
150cm (Iimori)
165cm (Toomi)
325cm (Alps daira)
Hakuba 47:
234cm
Tsugaike Kogen:
180cm (Kanenonaruoka)
150cm (Maruyama)
360cm (Tsuganomori)
Hakuba Iwatake:
150cm (Shomen)
250cm (Sancho)
Sun Alpina Sanosaka:
160cm
Hakuba Minekata:
170cm

Archive report: Posted at 9:56am on Sunday 31st January 2010
The latest Hakuba Now report can be found here

Hakuba Now ski lift operation notes:

Please see main report for details.

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