A slight drop in geopotentials on northern Italy, caused by an intense disturbance in southern Scandinavia, predisposes the atmosphere to the development of cumulus clouds above the Alpine hills but with trespassing towards the neighboring plains.

Piedmont, Lombardy and Valle d'Aosta

Thunderstorms in development in the coming hours on the reliefs, the amount of energy available will be enormous even in the Alpine areas, up to 2800J / Kg (cape) are expected with the possibility of hail and really high rain rates.

Possibility of extension of the phenomena to the nearby plains thanks to the outflow (fresh wind coming out of thunderstorms that undermining the warm air present in the surroundings determines the formation of thunderstorms). (Level 1)

Veneto, Friuli and Trentino Alto Adige

Another stormy day for the alpine areas of these regions. The thunderstorms will develop in the next few hours, resulting very intense in the Dolomite area.

Hailstorm with accumulations on the ground are possible, high rain rates with local flooding and gusts of wind.
The extension to the flat areas is unlikely.

Being thunderstorms inserted in a context without a jet (bearing current in free atmosphere) their motion will be random and messy.

https://www.windy.com/annotation/5d1a0101cb9d30001912361a

Jacopo Zannoni

The member of the storm chasers group ZenaStormChaser from Genoa, Italy. Follow ZenaStormChaser on Facebook, Instagram or Twitter