CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST |
| ISSUED AT 08:40 SATURDAY MAY 17 2008 |
| VALID FROM : SATURDAY MAY 17 -- UNTIL : THURSDAY MAY 22 2008 |
| GENERAL SYNOPSIS |
| Complex low area 1005-1002 hpa, Northern France to Northern Algeria, drifting slowly east, and driving an unsettled and humid southwesterly stream from the Mediterranean towards the Alps. From Sunday, condition should evolve to a slightly more favourable pattern |
| TODAY - SATURDAY MAY 17 2008 |
| Cloudy in the morning - becoming overcast - rainy afternoon |
| SKY CONDITIONS (cloud - sunshine) : cloudy with fleeting sunny spells in the morning - becoming mostly cloudy or overcast - period of sunshine close to 20%. |
| PRECIPITATION : rain starting up towards the middle of the day - becoming locally heavy with thunderstorm towards the latter part of the afternoon - rain-snow limit towards 2400 m. |
| WIND | - | ground level : varible light - possible fœhn wind puffs in the morning. |
| - | mid mountain : S -> variable light. | |
| - | high mountain : SSW moderate. |
| TEMPERATURE : min +9°C - max +14°C. |
| ISOTHERM 0°C : | 2800 -> 2600 m. |
| ISOTHERM -10°C : | 4200 m. |
| OVERNIGHT |
| Rainy |
| SKY CONDITIONS (cloud) : overcast - becoming mostly cloudy. |
| PRECIPITATION : thundery rain in the first part of the night - showers later, becoming scattered - rain-snow limit dropping towards 2400 m. |
| WIND | - | aloft : SSW light. |
| TEMPERATURE : +8°C. |
| TOMORROW - SUNDAY MAY 18 |
| Mainly cloudy - showers in the morning and towards the latter part of the afternoon |
| SKY CONDITIONS (cloud - sunshine) : mostly cloudy or overcast early in the morning - becoming cloudy with sunny spells - increasing cloud towards the latter part of the afternoon - period of sunshine close to 30%. |
| PRECIPITATION : showers in the morning and towards the latter part of the afternoon - rain-snow limit towards 2200 m |
| WIND | - | aloft : variable light -> WSW moderate. |
| TEMPERATURE : | min +8°C - max +14°C. |
| MONDAY MAY 19 |
| Fairly sunny in the morning - increasing cloud with shower risk in the afternoon |
| SKY CONDITIONS (cloud - sunshine) : partly cloudy in the morning - becoming cloudy or mostly cloudy in the afternoon - period of sunshine close to 50%. |
| PRECIPITATION : late afternoon shower risk. |
| WIND | - | aloft : SW -> variable light. |
| TEMPERATURE : | steady. |
| EXTENDED OUTLOOK UNTIL THURSDAY MAY 22 2008 |
| Tuesday and Wednesday : changeable with diurnal instablility - sunny spells in the morning - shower risk in the afternoon. Thursday : fairly sunny. Outlook is uncertain. |
| Forecast reliability : fairly good until Monday - poor thereafter. |
| Reports | ||
|
Chamonix-ville 45.9 N 6.9 E - Altitude 1042 m 17 May 07:00 Temperature +9 °C Relative humidity 90 % Wind 0 km/h Pressure 1008 hpa - steady Pressure at 1042 m 892 mb Precipitation last 6h 0.0 mm Skies cloudy Visibility 25000 m |
Aiguille du Midi Altitude 3845 m 16 May 07:00 Temperature -7 °C Wind SW 30 km/h Relative humidity % |
Le Lac Blanc Altitude 2330 m 16 May 07:00 Snow depth 140 cm Wind 5 km/h Gusts -- km/h Temperature +3 °C Relative humidity -- % |
| w w w . c h a m o n i x - w e a t h e r . c o m Chamonix Valley and Mont-Blanc area weather information service |
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