sunset 21 h 18 min
GENERAL SYNOPSIS
- Altitude : Low pressure over France moving slowly northwards. Westerly to southwesterly flow over the Alps ; weak troughs crossing the Alps in the first part of the afternoon
- surface : Weak southwesterly flow, with upward pressure tendency.
QNH 1010hPa
FL 75 2260m
FL 115 3480m
FL 195 5920m
AIR MASS/DEVELOPMENT OF CONVECTION :
LOCAL ST-AUBAN :
unstable and moist air from the surface to 3200m ; slightly more stable above. 13h local time : 3/5 cu, base 1700m , then 2000/2100M with Tmax 21°C.
SOUTHERN ALPS :
No sounding in ST Crépin because of bad conditions. Evolution : very cloudy to overcast towards the Gap region and the north of the Durance valley with risk of showers.
ISO 0°C 2400 m
ISO -10 °C 3200 m
Favourable elements :
- Possibility of westerly lee wave specially towards the south.
- westerly slope in the south of Vinon
Unfavourable elements :
- mid level (Ac) and upper level clouds (Ci), more numerous towards the nortwest ;
- showers in the Gap and Embrun regions
Outlook for tomorrow :
Westerly to southwesterly flow ; hight of pressure ; conditions becoming more favorable in an less humid and more stable air mass.
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| Web page by Denis
Flament (from Nogaro
aeroclub) consulted updated : 13-Jun-97 |
