Mammatus clouds underneath the Leoti supercell by William Demasi

Extreme vorticity in Genoa by William Demasi

Tornadic supercell in Dodge City by William Demasi

Adrenaline storm over the Ligurian Sea by William Demasi

Stunning thunderstorm in Tuscany by William Demasi

Positive lightning in Genoa by William Demasi

Waterspout during the outbreak in Genoa by William Demasi

Spectacular lightning show in Liguria by William Demasi

Sunset supercell near Leoti by William Demasi

Incredible supercell in Kansas by William Demasi

Magnificent supercell thunderstorm north of Leoti by William Demasi

Intense storm approaching by Jacopo Zannoni

Tornadic supercell near Leoti by William Demasi

Amazing supercell in Veneto by William Demasi

Amazing lightning near Leoti by William Demasi

The Leoti supercell at dusk by William Demasi

Spectacular supercell near Leoti, Kansas by William Demasi

The Leoti supercell illuminated by lightning by William Demasi

The Leoti supercell by William Demasi