weather conditions
Switzerland is locat on the southeastern ge of a large low pressure system with its core west of Ireland. A warm front, embd in a weak to moderate southwesterly flow, pass through Switzerland overnight. Behind it, mild, fairly humid and increasingly unstable air is currently being brought to Switzerland.
Illustration with model data and mark fronts
Fronts, pressure distribution and air mass map (potential equivalent temperature) at 850 hPa (approx. 1500 m). Switzerland is locat in the so-call “warm sector” between the frontal systems. (MeteoSwiss, ECMWF)
With the weather situation describ and the mostly sunny weather this morning, the three basic conditions (humidity, instability and uplift) for thunderstorms are present on the entire northern side of the Alps. Thanks to a slight increase in wind with increasing altitude (wind shear), the thunderstorms can potentially be longer lasting and more severe.
If there is sufficient moisture and instability , this is reflect in swen phone number library the “CAPE” parameter. ” C onvective A vailable P otential E nergy” is a measure of how much energy is available to form thunderclouds. The values calculat for today, some of which are well over 1000 J/kg, are quite high for the beginning of May. The following graphic shows the forecast (mix layer) CAPE for today at 2 p.m.
Map of Switzerland with CAPE values from the COSMO-1E model
The highest CAPE values are forecast particularly north of the Jura (moister air) and along the foothills of the Alps (more solar radiation). Over the Jura itself, there is hardly any CAPE at this time because the first how to get a transparent taskbar in windows 11 thunderstorms are already being modell in the model and the energy in the weather model has therefore already been us up or convert. (MeteoSwiss)
The third “thunderstorm ingrient”, uplift , will primarily be adb directory caus by the mountain ranges (especially the Jura and the foothills of the Alps) today. However, in the late afternoon, any convergence lines are also likely to trigger thunderstorms. The downdrafts (“outflows”) trigger by thunderstorms could meet and form new thunderstorm cells.