CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST


Yosa Buson
Touching even more
In the light of the lantern
Cold prayer at night
ISSUED AT 08:10 WEDNESDAY NOVEMBER 20
VALID FROM : WEDNESDAY NOVEMBER 20 ‑‑ UNTIL : MONDAY NOVEMBER 25 2019

GENERAL SYNOPSIS
Northern Alps enjoy tiny mobile high ridge over Southern Germany, while Adriatic 1010 hpa low continues driving humid puffs up to Italian foothills. This Wednesday will thus feature fair sunny condition, after low cloud early dispelling in the valley, and before some high cloud crossings from Aosta Valley later in the afternoon. • Foehn situation expected to setting up on Thursday afternoon upon approach of a low system west of Brittany, that will stand face to face with strengthening high pressure already settled over Western Russia. This pattern is expected to persisting until Saturday afternoon, possibly causing locally strong gale during the night to Saturday.
TODAY - WEDNESDAY NOVEMBER 20
Fairly sunny ‑ getting milder in the valley and in the median altitude range
SKY CONDITION : early morning fog patches below 1100 m early in the morning ‑ else, clear until the middle of the afternoon ‑ some cloud likely to growing over the massifs ‑ high cloud running over from Italy, southeast, towards the latter part of the afternoon. Period of sunshine close to 85%.
PRECIPITATION : none.
WIND - ground level : calm ‑ occasionally very light.
WIND - mid mountain : S ‑> SE light.
WIND - high mountain : SE light ‑> ESE light to moderate.
TEMPERATURE : low ‑2°C - high +8°C.
ISOTHERM 0°C : 2300 ‑> 2100 m.
ISOTHERM -10°C : 3900 ‑> 3700 m.
ROAD CONDITION  : no traffic issue. (Wed. 06:00).morelive precipitation radar over the Alps
OVERNIGHT
High cloud crossings from south, fairly thick at times ‑ dry and cold
SKY CONDITION : high cloud continue to run over from Italy, mostly from south henceforth ‑ maybe fairly thick at times.
PRECIPITATION : none.
WIND - aloft : ESE ‑> S light to moderate.
TEMPERATURE : low +1°C.
THURSDAY NOVEMBER 21
Cloudy ‑ mild atmosphere in the afternoon, filling increased by still light foehn
SKY CONDITION : cloud running over from south, often thick ‑ foehn generated sunny spells, leeward of High Massifs. Period of sunshine close to 50%.
PRECIPITATION : none.
WIND - aloft : S light to moderate ‑> SW moderate ‑ light afternoon foehn in the valley.
TEMPERATURE : low +1 °C - high +7°C.
FRIDAY NOVEMBER 22
Foehn ‑ sunny spells and cloud crossing in turn ‑ increasing wind over the hours
SKY CONDITION : cloudy with foehn generated sunny spells. Period of sunshine close to 50%.
PRECIPITATION : none.
WIND - aloft : SW moderate ‑> moderate to strong.
TEMPERATURE : rising.
EXTENDED OUTLOOK UNTIL MONDAY NOVEMBER 25 2019

Saturday : strong foehn, still, in the morning, decreasing quickly from the middle of the day ‑ this might allow for some light shower to running over from south later ‑ south gale high up. Sunday : fairly sunny and unseasonably mild, especially in the median altitude ranger. Monday : fairly sunny ‑ low stratus cloud risk in the valley ‑ somewhat cooler than previously.

Forecast reliability : fairly good until Friday.

ReportsAs a reminder, today in Chamonix, the sun rises at 07:39:48 and goes down at 16:56:32.
45.55 N 6.51 E - Altitude 1040 m
November 20 07:00
Temperature -2°C
Relative humidity 96%
Wind 0 km/h
Sea level pressure 1011 hpa - falling slowly
Pressure at 1042 m 895 mb
Precipitation last 6h 0.0 mm
Skies partly cloudy - fog patches - clear above 1100 m
Visibility 90000 m
Altitude 3845 m
November 20 07:00
Temperature -10°C
Wind SSE 20 km/h
Altitude 2250 m
November 20 06:00
Snow depth 9 cm
Wind 5 km/h
Gusts -- km/h
Temperature -1°C