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Interestingly Föhnfall

Synoptic Background:

About Mitteuleuropa a Südwestanströmung has closed, driven by a low pressure system that has established itself over the British Isles. Striking is also the extremely cold air that hangs over Eastern Europe.

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satellite imagery 12 UTC (viewable area), many clouds over much of Europe (some residual clouds and haze , some moisture in the British lows) and a few clouds over Eastern Europe and snow (the Baltics, Belarus, Russia).

The WRF (12x12 km resolution) shows the striking air mass antagonism between West and East, Austria already engaged a few days and slowly moved to the east ( outlined in Manfred's Blog ). As a measure of the air mass contrasts, the equivalent potential temperature at 850 hPa is perfect.

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A logical consequence of the southerly flow and the distribution of air masses is reflected in the maps of the sealevel pressure (SLP), also at the same time, now 12 such

We see three things:
*) high pressure south of the Alps (dynamic wind pressure) 1006 hPa
*) of higher pressure in the East (hydrostatic, cold air) 1012 hPa
*) lower pressure in Bavaria (dynamic: Lee) 1002 hPa
*) deep within the Alps pressure (pressure drop due to heating and Lee) 1000 hPa

Soundings:

the west of the country you will see on the morning of the pivotal South - with blatant shear at 600 hPa (North West -> South West).

The East of the country shows the vertical profile of Vienna. The saturated layer with maximum at 1500 m, this amount will be seen these days the only solar radiation at the grid point Vienna.

The Sting

The pressure against rate of 6 hPa between Bolzano and Innsbruck was enough that in Innsbruck now broken through the afternoon, the hair dryer (78 km / h).

Despite higher pressure in the foothills.

The evolution (6 - 12 UTC) shows the pressure drop by 5 - 6 hPa in the Inn Valley.

reduced air pressure AUT - 2.15 / 2011 06 UTC

reduced air pressure AUT - 15/02/2011 12 UTC

The tangible result of the pressure distribution: the gusts this afternoon. Stormy in the West, vividly North.

wind gusts to 15 UTC

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References:
wetterzentrale.de (1); sat24.com (2) , UBIMET-WRF (3 +4), uni-Wyoming (5 +6), IMGI (7 +8), Weather data UBIMET / ZAMG (9,10,11);