CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST


Natsume Sôseki
Ask the breeze
Which leaf
First to fall will be
ISSUED AT 08:25 TUESDAY SEPTEMBER 1
VALID FROM : TUESDAY SEPTEMBER 1 ‑‑ UNTIL : SUNDAY SEPTEMBER 6 2015

GENERAL SYNOPSIS
Low 1004 hpa over Denmark and Southern Sweden, drifting very slowly north, driving a moderate southwesterly to westerly stream towards the Alps. The main body of the linked disturbance is expected to reaching the area from the west towards the middle of the day, while some pre‑frontal isolated shower might break out as from the early morning. This disturbance will be drifting somewhat east, then dispelling almost stationary by Thursday, maintaining a slightly unsettled and at times humid condition. Probably improving before the week‑end.
TODAY - TUESDAY SEPTEMBER 1
Cooler ‑ often mainly cloudy ‑ thundery showers in the afternoon
SKY CONDITION : mostly cloudy on the whole ‑ fleeting sunny spells in the morning. Period of sunshine close to 25%.
PRECIPITATION : isolated shower early in the morning ‑ becoming frequent in the afternoon with possible local thunderstorm ‑ rain‑snow limit towards 3400 m, dropping.
WIND - ground level : variable light to moderate.
WIND - mid mountain : WSW light ‑> light to moderate.
WIND - high mountain : SW moderate to strong ‑> WSW light to moderate.
TEMPERATURE : low +14°C - high +19°C.
ISOTHERM 0°C : 3700 ‑> 3500 m.
ISOTHERM -10°C : 5700 ‑> 5300 m.
ROAD CONDITION  : @ 06:30, dry roadways.morelive precipitation radar over the Alps
OVERNIGHT
Improving ‑ clear spell later
SKY CONDITION : mostly cloudy in the first part of the night, becoming cloudy with clear spell.
PRECIPITATION : scattered showers in the first part of the night ‑ rain‑snow limit towards 3300 m ‑ dry later.
WIND - aloft : WSW light to moderate ‑> moderate.
TEMPERATURE : low +9°C.
WEDNESDAY SEPTEMBER 2
Locally cloudy and humid ‑ fair sunny spells towards the middle of the day
SKY CONDITION : mostly cloudy ‑ fair sunny spell towards the middle of the day and early in the afternoon. Period of sunshine close to 50%.
PRECIPITATION : some drizzle along the slopes.
WIND - aloft : WSW moderate ‑ moderate to strong at times.
TEMPERATURE : low +9 °C - high +20°C.
THURSDAY SEPTEMBER 3
Changeable ‑ slightly cooler than seasonal average ‑ fairly windy high up at times
SKY CONDITION : frequent cloud patches crossing over ‑ broken by some sunny spells. Period of sunshine close to 45%.
PRECIPITATION : probably none.
WIND - aloft : SW moderate ‑ moderate to strong at times.
TEMPERATURE : dropping lows.
EXTENDED OUTLOOK UNTIL SUNDAY SEPTEMBER 6 2015

Friday and Saturday : fairly sunny ‑ slightly cooler than seasonal average. Sunday : sunny ‑ cool in the morning ‑ very mild in the afternoon.

Forecast reliability : fairly good until Thursday ‑ poor thereafter.

ReportsAs a reminder, today in Chamonix, the sun rises at 06:53:30 and goes down at 20:11:28.
45.55 N 6.51 E - Altitude 1040 m
1 September 07:00
Temperature +14°C
Relative humidity 85%
Wind 0 km/h
Sea level pressure 1016 hpa - rising
Pressure at 1042 m 896 mb
Precipitation last 6h 0.0 mm
Skies mostly cloudy - shower in sight
Visibility 20000 m
Altitude 3845 m
1 September 07:00
Temperature -3°C
Wind SSW 60 km/h
Altitude 2250 m
1 September 06:00
Snow depth 0 cm
Wind 10 km/h
Gusts 20 km/h
Temperature +10°C