Chamonix Weather

CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST

ISSUED AT 08:30 THURSDAY JULY 02 2009

VALID FROM : THURSDAY JULY 02 -- UNTIL : TUESDAY JULY 07 2009

GENERAL SYNOPSIS

High 1025-1022 hpa, British Isles to Russia, weakening. Low gradient with fairly high pressure 1015-1018 hpa over France and the Mediterranean. This condition is favourable to afternoon cloud increase, with localized thunderstorm risk. More humid and unsettled southwesterly stream setting up by Saturday. Thundery period likely on Sunday.

TODAY - THURSDAY JULY 02 2009

Fairly sunny - becoming hot - afternoon thunderstorm risk

SKY CONDITIONS (cloud - sunshine) : clear or partly cloudy in the morning - becoming locally cloudy or mostly cloudy due to cumulus cloud growth during the afternoon - period of sunshine close to 60%.

PRECIPITATION : localized afternoon thunderstorm risk.

WIND	-	ground level : morning calm - light to moderate afternoon thermal breeze.
	-	mid mountain : NW light to moderate.
	-	high mountain : NW light to moderate.

TEMPERATURE : min +9°C - max +29°C.

ISOTHERM 0°C :

3800 -> 4100 m.

ISOTHERM -10°C :

5100 -> 5300 m.

OVERNIGHT

Clear

SKY CONDITIONS (cloud) : partly cloudy, then clear.

PRECIPITATION : none.

WIND

-

aloft : WNW light to moderate -> NW moderate.

TEMPERATURE : +10°C.

TOMORROW - FRIDAY JULY 03

Fairly sunny - becoming hot - late afternoon thundery shower slight risk

SKY CONDITIONS (cloud - sunshine) : clear or partly cloudy in the morning - becoming locally cloudy due to cumulus cloud growth during the afternoon - period of sunshine close to 70%.

PRECIPITATION : late afternoon thundery shower risk.

WIND

-

aloft : NW moderate.

TEMPERATURE :

min +10°C - max +29°C.

SATURDAY JULY 04

Fairly sunny - hot, becoming sultry - evening thunderstorm risk

SKY CONDITIONS (cloud - sunshine) : clear or partly cloudy in the morning - becoming locally cloudy to mostly cloudy during the afternoon - period of sunshine close to 70%.

PRECIPITATION : late afternoon thunderstorm risk.

WIND

-

aloft : W moderate.

TEMPERATURE :

steady.

EXTENDED OUTLOOK UNTIL TUESDAY JULY 07 2009

Sunday : thundery weather - temperature drop. Monday and Tuesday : changeable and cooler - slight shower risk - outlook is uncertain.

Forecast reliability : poor.

Reports
Chamonix-ville 45.9 N 6.9 E - Altitude 1042 m 2 July 07:00 Temperature +9 °C Relative humidity 95 % Wind 0 km/h Pressure 1018 hpa - steady Pressure at 1042 m 903 mb Precipitation last 6h 0.0 mm Skies clear Visibility 40000 m	Aiguille du Midi Altitude 3845 m 1 July 07:00 Temperature -5 °C Wind N 10 km/h Relative humidity %	Le Lac Blanc Altitude 2330 m 2 July 07:00 Snow depth 0 cm Wind 5 km/h Gusts -- km/h Temperature +12 °C Relative humidity -- %

c h a m o n i x - m e t e o . c o m Chamonix Valley and Mont-Blanc area weather information service

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