CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST


Matsuo Bashō
Withered by winter
One-colored world—
The sound of wind
ISSUED AT 18:55 ON THURSDAY OCTOBER 23, 2014
VALID FROM : THURSDAY OCTOBER 23 -- UNTIL : WEDNESDAY OCTOBER 29 2014

GENERAL SYNOPSIS
High, 1027 hpa over Southern Germany, drfiting northeast, then merging with the russian high. Low 1004 hpa, Adriatic Sea and Northern Balkans, filling while drifting southeast. The pressure gradient is still fairly strong over the Alps in the evening while expected to loosening overnight, allowing for the strong N wind to decreasing high up. The fine autumnal weather currently setting up is expected to lasting at least until the first part of next week. Sunny condition gradually leading to milder atmosphere, temperature getting slightly above seasonal average from Saturday..
THURSDAY EVENING OCTOBER 23 - AND OVERNIGHT
Clear - cold in the valley - decreasing wind high up
SKY CONDITION : clear.
PRECIPITATION : none.
WIND - ground level : variable light or nil.
WIND - mid mountain : NNE light to moderate.
WIND - high mountain : NNE moderate to strong -> N light to moderate.
TEMPERATURE : low -4°C.
ISOTHERM 0°C : 3200 -> 3400 m.
ISOTHERM -10°C : 4900 m.
Temperature inversion towards 1400 m.
TOMORROW - FRIDAY OCTOBER 24
Sunny - white frost early in the morning - fairly mild in the afternoon
SKY CONDITION : clear in the morning - partly cloudy in the afternoon. 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 -4°C - high +13°C.
ISOTHERM 0°C : 3400 -> 3500 m.
ISOTHERM -10°C : 4900 m.
Same kind of weather over the Upper Aosta Valley and the bordering Valais.
FRIDAY TO SATURDAY NIGHT - OCTOBER 24 TO 25
Partly cloudy - cold in the valley
SKY CONDITION  : partly cloudy - thin high cloud.
PRECIPITATION : none.
WIND - aloft : NNW -> NW light to moderate.
TEMPERATURE : low -1°C.
Temperature inversion towards 1500 m.
SATURDAY OCTOBER 25
Sunny ‑ slightly hazy at times ‑ noticeably milder in the afternoon
SKY CONDITION : clear or partly cloudy - high cloud crossing over. Period of sunshine close to 85%.
PRECIPITATION : none.
WIND - aloft : NW light to moderate -> light.
TEMPERATURE : low -1 °C - high +16°C.
Same kind of weather over the Upper Aosta Valley and the bordering Valais.
SUNDAY OCTOBER 26
Sunny ‑ some high cloud at times ‑ mild in the afternoon
SKY CONDITION : clear or partly cloudy - high cloud crossing over. Period of sunshine close to 85%.
PRECIPITATION : none.
WIND - aloft : NW -> variable light.
TEMPERATURE : low +1°C - high +16°C.
Uncertain.
EXTENDED OUTLOOK UNTIL WEDNESDAY OCTOBER 29 2014

Monday to Wednesday : 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 08:00:43 and goes down at 18:32:53.
45.55 N 6.51 E - Altitude 1040 m
23 October 08:00
Temperature -1°C
Relative humidity 100%
Wind 0 km/h
Sea level pressure 1025 hpa - steady
Pressure at 1042 m 904 mb
Precipitation last 6h 0.0 mm
Skies clear
Visibility 75000 m
Altitude 3845 m
23 October 08:00
Temperature -14°C
Wind NW 80 km/h
Altitude 2250 m
23 October 08:00
Snow depth 15 cm
Wind 15 km/h
Gusts 20 km/h
Temperature -3°C