Hakuba Now daily snow and weather - Friday 16th February 2007

Hakuba Now (Archive Report)

Independent and trustworthy daily snow and weather reports from Hakuba & Otari region, Japan
ARCHIVE REPORT: Posted at 9:19am on Friday 16th February 2007
Current weather conditions
Observed fresh snowfall
weather condition
Broken cloud cover, nil precipitation.
Base temp:
0°C

Top temp:
0°C
Precipitation Wind Visibility
precipitation condition
-
wind condition
Moderately strong winds from the north-west above tree line.
Good to excellent
This report
Friday 16th February 2007, 9:19am
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Thursday 15th February 2007, 11:02am ---
Wednesday 14th February 2007, 9:11am ---
Tuesday 13th February 2007, 9:19am ---
Monday 12th February 2007, 11:24am ---
Sunday 11th February 2007, 9:55am ---
Saturday 10th February 2007, 10:13am ---
Last 7 reports (total): ---
Last 14 reports (total): ---
Current month (February 2007) total: ---
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Archive report: Posted at 9:19am on Friday 16th February 2007
The latest Hakuba Now report can be found here

The wind was gusting to strong this morning in the upper Hira Kawa valley. Snow plumes were prominently visible on all the upper ridge crests in sight. The clouds over the Hakuba Sanzan were down to 1,800 m a.s.l. so the upper winds can only be imagined. Yesterday above the Tsuga Ike Lift Company terrain the wind at ridge top occasionally sounded like a not too distant jet taking off. There was some 30 cm of moderately dense new snow at 1,900 m a.s.l. yesterday around noon.

Just now we have a first hand report from the Happo One Lift Company terrain that above tree line the winds are strong from the north-west with intense snow transport. The upper lifts at Happo One are still closed from Yusagi Daira up (top of the gondola) because of high winds. But winds are forecast to moderate soon.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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

Sky: Broken clouds (more than 50% cloud cover)
Temperature: Present: -3.5 C
Maximum: -3.5 C
Minimum: -4.0 C
Wind at surface: Light and variable, occasionally gusting moderate from north-west.
Winds aloft: Moderate from north-west
Precipitation: Snowing -1 cm per hour accumulation
Barometer and trend: 917 hPa and rising
Height of new snow in 24 hours (HN24): 18 cm {wind effect in study plot}
Total depth of snowpack (HS): 88 cm
Foot penetration: 50 cm
Surface: New snow, fragements and rimed, 1.0mm (riming of crystals usually indicates turbulent air aloft)
Density of surface snow: 90 kg per cubic metre
Crust: not measured (below new snow)
Cloud ceiling:
^^^^^^^^^^^^^^^^^^^^^^^^
Hazard:

Above tree line: High

Tree line: High

Below tree line: Moderate

N.B. We have a first hand report of high to extreme winds from the north-west in the alpine. The daily warming could reduce the hazard at tree line.

Travel Advisory:
A trained observer on the Happo One Lift Company terrain reports no sign of avalanche activity visible anywhere. There seems to be about 25 cm of storm snow (HST 25 cm). the strong winds have broken up the crystals and so the density is a tad high but nothing to complain about. Yesterday above the Tsuga Ike Lift Company terrain the trail-breaking was not too difficult (ski penetration of mostly 20 cm) as there is a carrying crust under the storm snow. Yesterday at about noon at 1,700 m a.s.l. there was a shear down 20 cm (Compression Test Easy: 6 taps, sudden planar).

Archive report: Posted at 9:19am on Friday 16th February 2007
The latest Hakuba Now report can be found here

Hakuba Now ski lift operation notes:

All resorts operating. The upper elevation lifts closed due to strong winds.

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