Supercell near Booker, Texas (Mike Olbinski)

Supercell near Booker, Texas (Mike Olbinski)

The Alps (Martin Heck)

The Alps (Martin Heck)

Iceland (Eva Sturm)

Iceland (Eva Sturm)

Lake Ontario (Fred Kellerman)

Lake Ontario (Fred Kellerman)

Scottish Highlands (Winterwatch - BBC)

Scottish Highlands (Winterwatch - BBC)