But as the plane touched down, the last of the showers swept through, the clouds parted, and beautiful blue skies greeted Mrs.

WHITEHOUSE: "Our Force is a Force of Families": First Lady Michelle Obama to West Point Graduates | The White House

He introduces the half-dozen main types of clouds as if they were his oldest friends: there is the towering, thunderous cumulonimbus, the beautiful cirrus, the fluffy, fine-weather cumulus.

ECONOMIST: Meteorology