Hakuba Now daily snow and weather - Sunday 4th February 2007

Hakuba Now (Archive Report)

Independent and trustworthy daily snow and weather reports from Hakuba & Otari region, Japan
ARCHIVE REPORT: Posted at 9:56am on Sunday 4th February 2007
Current weather conditions
Observed fresh snowfall AT BASE
weather condition
Snowing lightly to cloudy
Base temp:

Top temp:
Precipitation Wind Visibility
precipitation condition
wind condition
Moderate with strong gusts from the North West.
Poor to variable
This report
Sunday 4th February 2007, 9:56am
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Archive report: Posted at 9:56am on Sunday 4th February 2007
The latest Hakuba Now report can be found here

Hakuba presently sits under clear blue skies andthe sun is shining! Higher ridges were exposed to some fierce winds yesterday afternoon and evening. Expect to find scoured ridges and wind loaded areas in South East facing slopes.
A dusting of snow (trace) fell overnight but the hill is still great with great coverage all over and packed powder/fresh powder if you look around. Still crisp and cold at 8:00 AM but expect sun radiation on lower slopes and south facing slopes.


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

Sky: Obscured
Temperature: Present: -5.0 C
Maximum: 3.0 C
Minimum: -6.0
Wind: Moderate from the West and gusting to strong from North-west
Winds aloft: unobserved
Precipitation: Snowing 2 cm per hour accumulation
Barometer and trend: 915 hPa and rising
Height of new snow in 24 hours (HN24): 25 cm
Total depth of snowpack (HS): 108 cm
Foot penetration: 50 cm
Surface: New snow, rimed, sized 0.5 mm
Density of surface snow: 70 kg/ cubic metre
Crust: none
Above tree line: High
Tree line: Considerable
Below tree line:Moderate

N.B. hazard will increase with day time warming and increased load (either wind loading and/or new snow)

Avalanche observations:

-- one size 1.5, slab, NE aspect, slope 38 degrees, elevation 2,200 m a.s.l., crown width 10 m, crown height 50 cm, length of run 150 m (vertical 60 m)
-- one size 2.5, slab, SE aspect, slope 38 degrees, elevation 1,850 m a.s.l., crown width 50 m, crown height 40 cm, length of run 250 m top of run-out/fan

Compression tests: 07-02-03
site: Happo, 1,800 m a.s.l., E aspect, slope 34 degrees, sky clear, precipitation nil, moderate to strong west winds, Ta -2.5, Ts -9.8, time 1430 hrs., HS 300 plus cm. CTM @ 75 cm on decomposing fragments, resistant planar, x 2; CTH @125 cm, melt/freeze faceting, sudden planar, x 2
Same site but S aspect. CTM(18) @ 90 cm, sudden collapse, melt/freeze faceting, x 2; CTE (4) @ 10 cm, on decomposing rounds and melt/freeze interface, progressive compression, x 2.

On shaded aspects the new storm snow is overlaying the preserved low density crystals of last week's storm.

On southern aspects there are multiple melt/freeze crusts with faceting grains 2 to 3 mm.

Be aware when new snow buries these melt/freeze crusts of February 3rd. Wind transported snow appears to be bonding well to February 1st melt/freeze crust.

Snow pack is shallow around rocks. Large grain depth hoar can be found around ridge top rocks and trees.

Travel Advisory:
Use greater caution on steeper terrain as new snow accumulates on February 3 rd melt/freeze crust. Active wind transport has been taking place the past two days. Be wary around steep, wind loaded rocky outcrops.

Archive report: Posted at 9:56am on Sunday 4th February 2007
The latest Hakuba Now report can be found here

Hakuba Now ski lift operation notes:

As of 9am this morning, Goryu, Happo One and Tsugaike resorts are all on minimum lift operation. Happo presently has only the bottom lifts running, no Gondola yet. Tsugaike Gondola is just about toope

Saturday 3rd February 2007
This report
Sunday 4th February 2007
Monday 5th February 2007
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