In contrast to a low pressure area, an upper low pressure area is an area! of low air pressure at altitude. This is not necessarily visible! on the weather maps print in daily newspapers, as these only show the pressure conditions at ground level. However, the influence on the air mass is the same: air moves anti-clockwise around a low pressure area and clockwise around a high pressure area. If you look at a map with the high and low pressure areas at altitude, you can relatively easily see from which direction the upper air flow is coming and therefore also what properties the air mass has.
Switzerland is mostly in the area of influence of the westerly wind zone, so most high and low pressure areas move from west to east. Low pressure areas on the ground develop particularly well when they form in front of a low pressure area on the upper level.
Satellite image from time with overlaid pressure surfaces
As can be seen in the illustration, the low pressure area over southern France is currently causing a southeasterly flow from the Miterranean. The air that is brought in tends to be moist and rather cool. Together with the already clearly noticeable solar radiation (the sun is about as high in mid-May as it was at the end of July), short, heavy showers and the occasional thunderstorm are repeatly occurring in the unstable air.
The general structure will not change in the next few days. The low saudi arabia phone number library pressure system will slowly move southwards and will have a centre over the Ligurian Sea on Sunday. It will then reorganise itself: the centre will be over the Strait of Sicily on Monday before moving back to the north of Italy. Humid air will continue to be transport to Switzerland with an easterly to southeasterly current.
Animation of the development of high and low pressure area
This is support by a second low pressure system, which will move try opening roblox and see if it works properly from Scotland across the English Channel to central France at the beginning of the week. In Switzerland, it will remain cloudy over the next few germany cell number days with only a few hours of sunshine and a breeze. There will also be occasional showers, with thunderstorms in some places.