Geography

a wide-spreading high pressure area is above whole EU. Overall air is sinking down in high pressure areas, which will cause clouds to dissolve. The high pressure area is responsible for most storm fronts.

the high pressure area lies over south-spain, the low pressure area Great Britain. The low pressure area wander from the British islands to Scandinavia. The weather over west and middle EU changes often.

the high pressure areas is sitting over northern Italy and the Balkan - leads to warm and moist air movement over the alps to the low pressure areas above western Europe.

between the high pressure above england and the low pressure area above the mediterranean sea evolves a easterly wind. this wind carries dry and cold air towards Switzerland - leading to cold weather during winter and sunny stable weather in summer.

this weather condition has no prevailing winds. In general, the atmospheric pressure is low. 

In summer the Earths surface can heat up - convectional clouds: can form strong thunderstorms

humid air is flowing from the altantic to Europe,

high pressure area over mediterranean sea, spain

low pressure area over UK, Scandinavia

horizontal advection

weather: humid air, rain, clouds, strong winds, thunderstorms

high pressure over northern Europe

low pressure area over Mediterranean sea, spain

wind coming from north-east

in winter cold air

in summer warm air

horizontal advection

weather: cold and dry

high pressure area over UK, island

low pressure over eatern EU, baltic states

wind coming from North

horizontal advection 

weather. on northern side: cloudy, on southern side: sunny

high pressure above Baltic States

low pressure above Benelux, France

wind coming from south

horizontal advection

weather: on northern side: sunny, on southern side: cloudy

high pressure area above middle Europe

low pressure: -

wind : - 

vertical advection

weather: summer: nice weather

if no summer: storms possible

high pressure: -

low pressure above Europe

wind: -

vertical convection

weather: wind flashes storms