CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST


Matsuo Bashō
Withered by winter
One-colored world—
The sound of wind
ISSUED AT 19:25 ON FRIDAY OCTOBER 24, 2014
VALID FROM : FRIDAY OCTOBER 24 -- UNTIL : THURSDAY OCTOBER 30 2014

GENERAL SYNOPSIS
High, 1040-1020 hpa, Western Russia to Eastern France, probably stationary until the end of next week, although allowing for a weak disturbance to crossing over from the northwest over the Alps between Saturday afternoon and Sunday morning. Sunny weather helped for a noticeably milder atmosphere today especially high up. Thick cloud patches crossing over on Saturday afternoon and during the following night, although without precipitation. Fine sunny condition resuming with temperature slightly above seasonal average from Sunday afternoon and lasting until Thursday. Short term outlook is uncertain.
FRIDAY EVENING OCTOBER 24 - AND OVERNIGHT
Partly cloudy - cold in the valley
SKY CONDITION : partly cloudy - thin high cloud from the west.
PRECIPITATION : none.
WIND - ground level : variable light.
WIND - mid mountain : mainly N - light.
WIND - high mountain : NNW -> NW light to moderate.
TEMPERATURE : low 0°C.
ISOTHERM 0°C : 3200 -> 3000 m.
ISOTHERM -10°C : 4900 m.
Temperature inversion towards 1600 m.
TOMORROW - SATURDAY OCTOBER 25
Fairly sunny in the morning - cloudy, but mild in the afternoon
SKY CONDITION : partly cloudy to cloudy in the morning - becoming cloudy to mostly cloudy in the afternoon - thickening high cloud crossing over. period of sunshine close to 45%.
PRECIPITATION : none.
WIND - ground level : variable light.
WIND - mid mountain : mainly N - light.
WIND - high mountain : NW light to moderate - at times moderate in the afternoon.
TEMPERATURE : low 0°C - high +16°C.
ISOTHERM 0°C : 3000 -> 2800 m.
ISOTHERM -10°C : 4900 -> 4800 m.
Uncertain.
SATURDAY TO SUNDAY NIGHT - OCTOBER 25 TO 26
Often mainly cloudy - probably dry
SKY CONDITION  : cloudy to mostly cloudy - thickening high cloud.
PRECIPITATION : probably none.
WIND - aloft : NW moderate -> NNE light to moderate.
TEMPERATURE : low +2°C.
Incertain.
SUNDAY OCTOBER 26
Improving quickly in the morning - mild on sunny slopes in the afternoon
SKY CONDITION : cloudy at times in the morning, becoming partly cloudy. Period of sunshine close to 75%.
PRECIPITATION : none.
WIND - aloft : NNE light to moderate -> NE moderate.
TEMPERATURE : low +2 °C - high +15°C.
Globally cooler atmosphere, although milder on sunny slopes in the afternoon.
MONDAY OCTOBER 27
Fine autumnal weather ‑ sunny ‑ cool in the morning ‑ mild in the afternoon
SKY CONDITION : clear or partly cloudy. Period of sunshine close to 90%.
PRECIPITATION : none.
WIND - aloft : NE moderate -> ENE light to moderate.
TEMPERATURE : low 0°C - high +16°C.
Same kind of weather over the Upper Aosta Valley and the bordering Valais.
EXTENDED OUTLOOK UNTIL THURSDAY OCTOBER 30 2014

Tuesday to Thursday : fine autumnal weather ‑ sunny ‑ cool in the morning ‑ mild in the afternoon.

Forecast reliability : poor.

ReportsAs a reminder, today in Chamonix, the sun rises at 08:03:30 and goes down at 18:29:37.
45.55 N 6.51 E - Altitude 1040 m
24 October 08:00
Temperature -2°C
Relative humidity 95%
Wind 0 km/h
Sea level pressure 1021 hpa - rising
Pressure at 1042 m 901 mb
Precipitation last 6h 0.0 mm
Skies clear
Visibility 75000 m
Altitude 3845 m
24 October 08:00
Temperature -7°C
Wind NE 40 km/h
Altitude 2250 m
24 October 08:00
Snow depth 5 cm
Wind 15 km/h
Gusts 20 km/h
Temperature +5°C