Around 15 I, Mauro, we meet William Vercelli east exit of the convection starts waiting for the next few hours. The alternative is to go to Mortara (PV), but we prefer to remain close to the highway to move faster. The risk of supercells is very high, given the important present and the shear getto molto sostenuto: situazione questa, in cui i temporali possono formarsi e sfuggire molto velocemente.
Ci sono molti cumuli in cielo, ma nessuno riesce a crescere a sufficienza. Sulle Alpi a nord e nord ovest sono presenti dei temporali che lentamente scendono verso la pianura. Dopo le 16 scorgiamo le bande di precipitazione all'orizzonte e le basi in lontananza, così ci dirigiamo un pò più a ovest. Usciamo a Vercelli Ovest e poco distante scattiamo le prime foto. Il temporale sta ancora cercando organizzandosi, ma mentre scattiamo inizia a soffiare un vento molto freddo.
In questi stessi istanti sembra perdere vigore e divenire outflow dominated; vediamo nuovi updrafts verso est, così rimontiamo in macchina per raggiungerli. Pochissimo time after being returned to the motorway, the time we were leaving we are surprised with the formation of a wall cloud. We stopped immediately and also the base seems to be structured better. After a few minutes begins to form a bump much directed toward the earth that revolves conspicuously not far from us. At first it seems a sort of inflow tail, but short-rotation suggests it is probably a funnel. After 10 minutes, the updraft and the funnel through the highway and pass us, so we share in pursuit, but soon starts to rain unexpectedly. Our supercell is joining another in Lomellina and so we have to head south, where we see the wall cloud of Mortara (PV). We aim, however, the congested we see further south in the hope that soon some of them to become a thunderstorm. We are witnessing the formation of funnel several times by simple congested that spin. Now a small photograph at sunset near Alexandria LP form, and we see a long line of congested on the lower Piedmont. Shortly after becoming a long line of CB with good lightning, so we stopped at Casale Monferrato (AL) which took some pictures of lightning.
basics approach, Vercelli West
Formation of a wall cloud
An overview (not perfectly aligned)
begins to form the funnel
overtakes us and within the cell is combined with that in Lomellina
Other funnel
Double rainbow
The two merged cells
Accumulation in rotation
Funnel of multiple
Small LP
initial formation stages of the storm line on the southern Piedmont
Lightning viewed from Casale Monferrato south
SHORT VIDEO
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