Hakuba Now daily snow and weather - Thursday 18th January 2007

Hakuba Now (Archive Report)

Independent and trustworthy daily snow and weather reports from Hakuba (Nagano), Japan
ARCHIVE REPORT: Posted at 9:07am on Thursday 18th January 2007
Current weather conditions
Observed fresh snowfall
weather condition
Overcast Snowing lightly
Base temp:
0°C

Top temp:
0°C
Precipitation Wind Visibility
precipitation condition
-
wind condition
Calm
Variable
This report
Thursday 18th January 2007, 9:07am
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Wednesday 17th January 2007, 8:49am ---
Tuesday 16th January 2007, 9:20am ---
Monday 15th January 2007, 9:27am ---
Sunday 14th January 2007, 10:31am ---
Saturday 13th January 2007, 9:13am ---
Friday 12th January 2007, 10:48am ---
Last 7 reports (total): ---
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Archive report: Posted at 9:07am on Thursday 18th January 2007
The latest Hakuba Now report can be found here

At the 0700 hr. reading time the sky was mostly cloudy with the odd, lonely looking snow flake drifting down in the just freezing, still air. The main peaks where cloaked in clouds. At 0830 hrs. the cloud ceiling seems to be around 1,500 m a.s.l. A negligible amount of snow has fallen in the last 24 hours. Yesterday's warming throught the clouds was enough to allow a weak crust to form overnight in the valley. Point releases were observed yesterday in the higher elevations. This warming has made the runs on the resorts hard packed and hopefully groomed as any moguls are deep and forbiding.

The good news is that it looks as if snow fall is just about on our doorstep. The barometric lines of presure are lining up North to South with cold low presure air masses moving in from North Korea and Siberia. And all those who know the mountains here in the Japanese North Alps know that this meens snow!

^^^^^^^^^^^^^^^^^^^^^^^^

The Hira Kawa Snow Study Plot (830m a.s.l.) the 0700 hr. reading is:
Sky: broken cloud
Temperature: Present: -1.0 C
Maximum: 3 C
Minimum: -2.0 C
Wind: calm
Precipitation: S -1
Barometer and trend: 917 hPa and steady
Height of new snow in 24 hours (HN24): 2 cm
Total depth of snowpack (HS): 68 cm
Foot penetration: 20 cm
Surface: new snow, size 2 mm
Density of new snow: not measurable
Crust: 3 cm
^^^^^^^^^^^^^^^^^^^^^^^^
Hazard:
Above Tree Line: Moderate

At Tree Line: Low

Below Tree Line: Low

N.B. the hazard may increase with daytime warming and/or increased snowfall.


Travel Advisory:
This morning there is a weak crust (at valley bottom at least) about 3 cm thick. But this crust is not very strong as the snow that fell overnight has insulated it slightly from Radiant heat loss. Reports of warming yesterday at higher elevations (point releases observed) indicates that there is also a substantial crust formed there as well. This is the basis for the hazard rating today. Also the cautionary note concerning the daily warming and subsequent breaking down of this crust.

The surface hoar that was observed recently is now covered by the new snow of yesterday. This will be referred to as the "January 17th layer".

Archive report: Posted at 9:07am on Thursday 18th 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 not running.\r\n\r\n

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