CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST
ISSUED AT 18:18 ON FRIDAY FEBRUARY 03, 2012
VALID FROM : FRIDAY FEBRUARY 03 -- UNTIL : THURSDAY FEBRUARY 09 2012
GENERAL SYNOPSIS
High ridge 1055-1040 hpa, Northwestern Siberia to England, weakening from the northwest over France. Low 1003 hpa, Southern Tyrrhenian Sea, drifting slowly northeast while filling. Strong northeasterly stream north of the Alps, less over the massifs, linked to a very cold polar air mass moving southwards and expected to reaching the Western Mediterranean by Sunday. Getting temporarily milder by Monday, then again somewhat colder on Tuesday and Wednesday. Slowly and gradually back to seasonal average thereafter.
FRIDAY EVENING FEBRUARY 03 - AND OVERNIGHT
SKY CONDITION : clear high up - changeable low stratocumulus cloud layer resuming below 2000 m.
PRECIPITATION : scattered snow flurries or frost at times from low cloud.
WIND - ground level : variable light.
WIND - mid mountain : NE light to moderate -> moderate.
WIND - high mountain : NE moderate -> SE light.
TEMPERATURE : low -16°C.
ISOTHERM 0°C : -- m.
ISOTHERM -10°C : 1000 -> 500 m.
NE wind should be stronger over the aiguilles Rouges than over the Mont-Blanc massif.
TOMORROW - SATURDAY FEBRUARY 04
SKY CONDITION : clear or partly cloudy - low cloud patches likely early in the morning. period of sunshine close to 75%.
PRECIPITATION : scattered snow flurries or frost at times from low cloud.
WIND - ground level : variable light.
WIND - mid mountain : NE -> NNE moderate.
WIND - high mountain : SE light -> NE moderate to strong.
TEMPERATURE : low -17°C - high -13°C.
ISOTHERM 0°C : -- m.
ISOTHERM -10°C : 500 -> 1000 m.
Guinness Book attempt, challenging winter 1985 ? Possibly….
SATURDAY TO SUNDAY NIGHT - FEBRUARY 04 TO 05
SKY CONDITION : clear or partly cloudy high up - blur patches in the valley.
PRECIPITATION : scattered snow flurries or frost at times.
WIND - aloft : NE moderate to strong -> NNE strong.
TEMPERATURE : low -17°C.
Gusty NE wind, probably stronger over the aiguilles Rouges.
SUNDAY FEBRUARY 05
SKY CONDITION : clear, then partly cloudy high up - high cloud from the northwest - early morning blur patches in the valley. Period of sunshine close to 80%.
PRECIPITATION : none.
WIND - aloft : NNE strong -> moderate to strong.
TEMPERATURE : low -16 °C - high -11°C.
Wind expected to decreasing at night.
MONDAY FEBRUARY 06
SKY CONDITION : partly cloudy. Period of sunshine close to 80%.
PRECIPITATION : none.
WIND - aloft : NNE moderate to strong.
TEMPERATURE : low -14°C - high -10°C.
Possible changeable and scattered low cloud.
EXTENDED OUTLOOK UNTIL THURSDAY FEBRUARY 09 2012
Tuesday to Thursday : fairly sunny - getting gradually milder.
Forecast reliability : fairly good until Sunday - poor thereafter.
