CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST
Yamaguchi Sodō
A plum scented wind
In the land of haikai
Blows triumphant
ISSUED AT 18:23 ON WEDNESDAY FEBRUARY 22, 2012
VALID FROM : WEDNESDAY FEBRUARY 22 -- UNTIL : TUESDAY FEBRUARY 28 2012
GENERAL SYNOPSIS
High 1029-1032 hpa, Madeira to France and further to Romania, weakening from the east. Which pattern is expected to persisting until the end of the week embellished by a noticeable mildness. Weak warm front expected however to crossing over the Alps on Thursday, with some cloud at times. High pressure center probably moving west of Brittany during the week-end, allowing a weak northwesterly disturbance to coming in between Monday and Tuesday.
WEDNESDAY EVENING FEBRUARY 22 - AND OVERNIGHT
SKY CONDITION : clear in the first part of the night - partly cloudy later with high cloud coming in from the northwest - locally cloudy later.
PRECIPITATION : none.
WIND - ground level : variable light.
WIND - mid mountain : NE light.
WIND - high mountain : NE moderate -> N light to moderate.
TEMPERATURE : low -6°C.
ISOTHERM 0°C : 2400 -> 2600 m.
ISOTHERM -10°C : 4000 -> 4200 m.
Cloud cover having a damping effect on the temperature drop in the valley. Temperature inversion towards 1600 m.
TOMORROW - THURSDAY FEBRUARY 23
SKY CONDITION : partly cloudy early in the morning - becoming cloudy with sunny spells, then locally mostly cloudy in the afternoon. period of sunshine close to 40%.
PRECIPITATION : none.
WIND - ground level : variable light.
WIND - mid mountain : NE -> N light.
WIND - high mountain : N light to moderate -> NNE moderate.
TEMPERATURE : low -6°C - high +6°C.
ISOTHERM 0°C : 2600 m.
ISOTHERM -10°C : 4200 -> 4300 m.
White-out high up for the main part of the day.
THURSDAY TO FRIDAY NIGHT - FEBRUARY 23 TO 24
SKY CONDITION : cloudy at first - locally thick high cloud - becoming partly cloudy towards the latter part of the night.
PRECIPITATION : none.
WIND - aloft : NNE moderate -> N light to moderate.
TEMPERATURE : low -5°C.
The air mass remains very mild high up related to seasonal average.
FRIDAY FEBRUARY 24
SKY CONDITION : partly cloudy - high cloud - cloudy with sunny spells at times. Period of sunshine close to 70%.
PRECIPITATION : none.
WIND - aloft : N light to moderate.
TEMPERATURE : low -5 °C - high +10°C.
Very mild in the afternoon, in the valley as well as high up.
SATURDAY FEBRUARY 25
SKY CONDITION : partly cloudy - high cloud - cloudy with sunny spells at times. Period of sunshine close to 70%.
PRECIPITATION : none.
WIND - aloft : NW light to moderate -> moderate to strong.
TEMPERATURE : low -4°C - high +8°C.
Starting up to getting colder high up. Uncertain.
EXTENDED OUTLOOK UNTIL TUESDAY FEBRUARY 28 2012
Sunday : fairly sunny - still milder than seasonal average in the afternoon. Monday : sunny morning - becoming cloudy from the northwest in the afternoon. Tuesday : morning cloud - sunny afternoon - mildness resumes. Outlook is uncertain.
Forecast reliability : fairly good until Friday - poor thereafter.
