Hakuba Now daily snow and weather - Tuesday 23rd January 2007

Hakuba Now (Archive Report)

Independent and trustworthy daily snow and weather reports from Hakuba region, Japan
ARCHIVE REPORT: Posted at 10:05am on Tuesday 23rd January 2007
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Observed fresh snowfall
weather condition
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Top temp:
Precipitation Wind Visibility
precipitation condition
wind condition
Moderate winds above 1,500 m a.s.l. from the north-west
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Tuesday 23rd January 2007, 10:05am
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Archive report: Posted at 10:05am on Tuesday 23rd January 2007
The latest Hakuba Now report can be found here

This morning the rising sun illuminated a wind generated "plume" of snow from the summit of Goryu Dake. Just now when I looked at Korenge Yama and Norikura Dake whirlwinds and plumes of snow were visible with the naked eye. But despite this and the lack of big precipitation in the forecast, yesterday's half dozen cemtimetres of moderately dense snow fall improved the feel of the intermediate terrain above 1,400 m a.s.l. Also, yesterday late afternoon, the wind was gusting to moderate on the upper lift accessible terrain of Happo One.

The valley bottom forecast is for a clear sky, temperaturew -3C to 3C, light north-west winds, and nil precipitation.


The Hira Kawa Snow Study Plot (830m a.s.l.) 0700 hr. reading is:

Sky: Scattered clouds
Temperature: Present: -5.0 C
Maximum: 9.0 C
Minimum: -6.0 C
Wind: Light from the west
Winds aloft: Moderate from the north-west
Precipitation: Nil
Barometer and trend: 923 hPa and steady
Height of new snow in 24 hours (HN24): 4 cm
Total depth of snowpack (HS): 68 cm
Foot penetration: 12 cm
Surface: new snow, size 2.0 mm
Density of surface snow: not enough to measure
Crust: below the new snow there is a 9 cm crust

Above Tree Line: Moderate

At Tree Line: Moderate

Below Tree Line: Low

N.B. The hazard may increase with daytime warming and/or increased load. The loading increase would be a result of wind transportation, so look for lee pockets at and above tree line.

Travel Advisory:
Although the amount of yesterday's new snow was not that great, the moderate winds associated with it, that have persisted since (moderate North-west) above tree line and down into the lower glades (and chutes) could create pockets that could produce some human triggered activity.

Yesterday afternoon while above the Tsuga Ike Lift Company's on a snow-shoe excussion approximately 7 cm of snow fell in two hours. Only light winds were experienced in the forest at about 1,650 m a.s.l.

Two snow profiles were reported in yesterday:
One, done by a visiting New Zealand ski-guide, was on Happo One, elevation 1,900 m a.s.l., north aspect, 32 degree slope. the significant observations were that two compression tests found a "moderate resistant planar" shear on 3 mm surface hoar down 25 cm from the surface. Down 50 cm from the surface was another "moderate resistant planar" result compression test on 2 mm faceted crystals.
The second was done as part of a professional level avalanche course. This was at 900 m a.s.l. on a north aspect, snow depth 80 cm (HS 80). There was a compression test "easy" down 14 cm from the surface and a compression test "moderate" down 55 cm on a melt-freeze layer.

Archive report: Posted at 10:05am on Tuesday 23rd January 2007
The latest Hakuba Now report can be found here

Hakuba Now ski lift operation notes:

Most lifts at all ski areas are operating. Minegata is now running.\r\n\r\n

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