CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST


Matsuo Bashō
Withered by winter
One-colored world—
The sound of wind
ISSUED AT 08:40 FRIDAY OCTOBER 24
VALID FROM : FRIDAY OCTOBER 24 ‑‑ UNTIL : WEDNESDAY OCTOBER 29 2014

GENERAL SYNOPSIS
High, 1035‑1020 hpa, Western Russia to Western Alps, probably stationary until the end of next week, although allowing for a weak altitude low to crossing over from Dover Strait to the Genoa Gulf between Saturday evening and Sunday afternoon. Sunny weather helps for a noticeably milder atmosphere today in the afternoon. Cloud patches crossing over during the Saturday to Sunday night, fairly thick at times with a slight shower risk. Fine sunny condition resuming with temperature slightly above seasonal average from Monday and lasting until Thursday..
TODAY - FRIDAY OCTOBER 24
Sunny ‑ white frost early in the morning ‑ fairly mild in the afternoon
SKY CONDITION : clear ‑ becoming partly cloudy towards the latter part of the afternoon ‑ thin high cloud from the west. Period of sunshine close to 95%.
PRECIPITATION : none.
WIND - ground level : light thermal breezes, downstream in the morning, upstream in the afternoon.
WIND - mid mountain : NNE light to moderate ‑> light.
WIND - high mountain : N ‑> NNW light to moderate.
TEMPERATURE : low ‑3°C - high +14°C - temperature inversion toward 1500 m early in the morning.
ISOTHERM 0°C : 3400 ‑> 3500 ‑> 3200 m.
ISOTHERM -10°C : 4900 m.
OVERNIGHT
Partly cloudy ‑ cold in the valley
SKY CONDITION : partly cloudy ‑ thin high cloud from the west.
PRECIPITATION : none.
WIND - aloft : NNW ‑> NW light to moderate.
TEMPERATURE : low 0°C - temperature inversion toward 1600 m.
SATURDAY OCTOBER 25
Fairly sunny in the morning ‑ hazy skies and mild atmosphere in the afternoon
SKY CONDITION : partly cloudy in the morning ‑ becoming cloudy in the afternoon ‑ thickening high cloud crossing over. Period of sunshine close to 55%.
PRECIPITATION : none.
WIND - aloft : NW light to moderate ‑ at times moderate in the afternoon.
TEMPERATURE : low 0 °C - high +16°C - temperature inversion toward 1600 m early in the morning.
SUNDAY OCTOBER 26
Fairly sunny ‑ high cloud crossing over ‑ mild in the afternoon
SKY CONDITION : cloudy at times in the morning, becoming partly cloudy ‑ high cloud crossing over. Period of sunshine close to 75%.
PRECIPITATION : none.
WIND - aloft : NNW light ‑> NE moderate.
TEMPERATURE : rising lows ‑ dropping highs.
EXTENDED OUTLOOK UNTIL WEDNESDAY OCTOBER 29 2014

Monday to Wednesday : fine autumnal weather ‑ sunny ‑ cool in the morning ‑ mild in the afternoon.

Forecast reliability : fairly good until Saturday ‑ poor thereafter.

ReportsAs a reminder, today in Chamonix, the sun rises at 08:02:06 and goes down at 18:31:14.
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