The Explosion: When the Playing Energy is Very High, so the Rise (Updraft) of the Hot-Humid Currents Very Fast, the Cumulonimbus Clouds Develop Very Quickly, Swelling Towards Every Direction and Assuming the Typical Cauliflower/Calvus Shape, Karst Region
HEAT afternoon THUNDERSTORMS
16-June-2019: on the Karst Region, generally, after a sunny and very hot morning, the first clouds (Cumulus humilis and mediocris into Cumulus congestus) form around 10AM Central European Time, while the spark that ignites the first, fundamental, thundery heat (Cumulonimbus), takes place between 12AM and 1PM CET; the ingredients for the formation of this type of local storms, in these parts, are always the same: (1) rapid solar heating of the soil and air layers above it, and, from mid morning, (2) very humid breezes coming from the Gulf of Trieste (Italy) and, for the more eastern areas, also from the Kvarner (Rijeka, Croatia).
The thermodynamic ascension of the summer sun overheated air, whose condensation into towering stormy clouds is widely favored by maritime humidity added, is necessary, although not sufficient, in producing fuel for these "internal combustion engines".
In general, after the first thunderheat, many more are formed and, in a important part, this happens thanks to the first one: the cold part of the thunderstorm, where there are precipitations and cool descending currents (Downdraft), becomes seed for the "burst" of other storms in the vicinity, with a chain effect.
This happens because the downdraft cool air, when it reaches the ground, turns into a horizontal wind, fresh and very humid, which with its rabid gusts moves away from the original storm in many directions, reaching areas still sunny, then causing the immediate, forced, rising of the hot air present (lighter than the fresh one arrived) condensing into new clouds with vertical development, base for further heat thunderstorms, at least until the sun warms the soil.
The Explosion: When the Playing Energy is Very High, so the Rise (Updraft) of the Hot-Humid Currents Very Fast, the Cumulonimbus Clouds Develop Very Quickly, Swelling Towards Every Direction and Assuming the Typical Cauliflower/Calvus Shape, Karst Region
HEAT afternoon THUNDERSTORMS
16-June-2019: on the Karst Region, generally, after a sunny and very hot morning, the first clouds (Cumulus humilis and mediocris into Cumulus congestus) form around 10AM Central European Time, while the spark that ignites the first, fundamental, thundery heat (Cumulonimbus), takes place between 12AM and 1PM CET; the ingredients for the formation of this type of local storms, in these parts, are always the same: (1) rapid solar heating of the soil and air layers above it, and, from mid morning, (2) very humid breezes coming from the Gulf of Trieste (Italy) and, for the more eastern areas, also from the Kvarner (Rijeka, Croatia).
The thermodynamic ascension of the summer sun overheated air, whose condensation into towering stormy clouds is widely favored by maritime humidity added, is necessary, although not sufficient, in producing fuel for these "internal combustion engines".
In general, after the first thunderheat, many more are formed and, in a important part, this happens thanks to the first one: the cold part of the thunderstorm, where there are precipitations and cool descending currents (Downdraft), becomes seed for the "burst" of other storms in the vicinity, with a chain effect.
This happens because the downdraft cool air, when it reaches the ground, turns into a horizontal wind, fresh and very humid, which with its rabid gusts moves away from the original storm in many directions, reaching areas still sunny, then causing the immediate, forced, rising of the hot air present (lighter than the fresh one arrived) condensing into new clouds with vertical development, base for further heat thunderstorms, at least until the sun warms the soil.