Saturday 13th of March 2010
| GENERAL SYNOPSIS |
| High, 1036 hpa far southwest of Ireland, drifting slowly towards Biscaye. Low gradient area with medium to fairly high pressure over the Mediterranean. Stable and gradually milder condition until the middle of next week except for a weak disturbance expected to crossing over Switzerland between Sunday evening and Monday morning. |
| TODAY - SATURDAY MARCH 13 2010 |
| Sunny - very cold in the morning |
| SKY CONDITIONS (cloud - sunshine) : clear or partly cloudy - period of sunshine close to 90%. |
| WIND |
- |
ground level : variable light - locally moderate in the afternoon. |
|
- |
mid mountain : NNE light. |
|
- |
high mountain : NNW -> NE moderate. |
| TEMPERATURE : min -9°C - max +4°C - morning inversion towards 1400 m. |
| ISOTHERM 0°C : |
1000 -> 1300 m. |
| ISOTHERM -10°C : |
3000 -> 3300 m. |
| OVERNIGHT |
| Clear and very cold |
| SKY CONDITIONS (cloud) : clear or partly cloudy. |
| WIND |
- |
aloft : NE -> N moderate. |
| TEMPERATURE : -10°C - inversion towards 1400 m. |
| TOMORROW - SUNDAY MARCH 14 |
| Fairly sunny - becoming cloudy from the north later in the afternoon - cold |
| SKY CONDITIONS (cloud - sunshine) : clear or partly cloudy - becoming cloudy from the north towards the end of the afternoon - period of sunshine close to 80%. |
| WIND |
- |
aloft : NW moderate -> moderate to strong. |
| TEMPERATURE : |
min -10°C - max +5°C - morning inversion towards 1400 m. |
| MONDAY MARCH 15 |
| Fairly sunny - becoming cloudy from the north later in the afternoon - cold |
| SKY CONDITIONS (cloud - sunshine) : clear or partly cloudy - becoming cloudy from the north towards the end of the afternoon - period of sunshine close to 30%. |
| WIND |
- |
aloft : N moderate to strong. |
| TEMPERATURE : |
rising lows. |
| EXTENDED OUTLOOK UNTIL THURSDAY MARCH 18 2010
|
| Tuesday and Wednesday : sunny - getting milder. Thursday : disturbance crossing over from the west. |
| Forecast reliability : fairly good until Tuesday - poor thereafter. |
| Reports |
Chamonix-ville
45.9 N 6.9 E - Altitude 1042 m
13 March 07:00
Temperature -9 °C
Relative humidity 95 %
Wind 0 km/h
Pressure 1026 hpa - rising
Pressure at 1042 m 903 mb
Precipitation last 6h 0.0 mm
Skies clear
Visibility 45000 m
|
Aiguille du Midi
Altitude 3845 m
13 March 07:00
Temperature -17 °C
Wind N 25 km/h
Relative humidity %
|
Le Lac Blanc
Altitude 2330 m
13 March 07:00
Snow depth 155 cm
Wind 15 km/h
Gusts -- km/h
Temperature -6 °C
Relative humidity -- %
|
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