The influence of the intermediate high has already subsided today ! Wednesday, and Switzerland has come under the influence of a low over the North Sea. This low directed moister air to the north side of the Alps in the form of a warm front with a west! to northwesterly flow.
Satellite image overlaid with precipitation (radar) and geopotential on the 500 hPa pressure surface.
Satellite image overlaid! with precipitation (radar) and geopotential on the 500 hPa pressure surface. (MeteoSwiss)
However, things will get more exciting on Thursday and Friday, when the following cold front of the low pressure! system first hits Switzerland and behind it a low pressure system moves! from northern France across the western Alps to northern Italy and is expected to! continue towards Austria on Saturday.
Different precipitation phases
The precipitation, which was still stratiform on Wednesday! will take on a convective character on Thursday. The necessary lifting will be provided! by several processes. On Thursday morning, the cold front will first lift the fairly humid air mass over Switzerland.
Weather situation on Thursday May 30, 2024 at 9 UTC: Left: Equivalent potential! temperature and geopotential at 850 hPa from the IFS weather model. Right: 6-hour precipitation total from the ICON CH2E CTRL weather model.
Weather situation on Thursday May 30, 2024 at 9 UTC: Left: thailand mobile database Equivalent potential temperature and geopotential at 850 hPa of the weather model IFS. Right: 6-hour precipitation total of the weather model ICON CH2E CTRL. (ECMWF and MeteoSwiss)
On Thursday afternoon, the vertical drive can be found at altitude when Switzerland is in the area of the left exit of the jet stream. Explanations can be found in this
blog
.
Weather situation on Thursday May
30, 2024 at 15 UTC: Left: Wind at 300 hPa (jet stream) and geopotential at 500 hPa of the weather model IFS. Right: 6-hour precipitation total of the weather model ICON CH2E CTRL.
Weather situation on Thursday May 30, 2024 at 15 UTC: Left: the happy company 5 reasons for happiness management in your company Wind at 300 hPa (jet stream) and geopotential at 500 hPa of the IFS weather model. Right: 6-hour precipitation total of the ICON CH2E CTRL weather model. (ECMWF and MeteoSwiss)
On Thursday evening and into the night on Friday, the low america email pressure system with the cold air will finally reach the western Alpine arc, leaving the stratification of the atmosphere unstable.
Weather situation on Friday May 31, 2024 at 03 UTC: Left: Temperature and geopotential at 500 hPa from the IFS weather model. Right: 12-hour precipitation total from the ICON CH2E CTRL weather model.
Weather situation on Friday May 31, 2024 at 03 UTC: Left: Temperature and geopotential at 500 hPa from the IFS weather model. Right: 12-hour precipitation total from the ICON CH2E CTRL weather model. (ECMWF and MeteoSwiss)
Finally, on Friday, a temporary countercurrent situation will arise, especially over the eastern half of the country.