Very cold weather is coming. US about to get 10th and chilliest polar vortex this winter
Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...
Weather Underground2d
Whirls, Curls, and Little Swirls: The Science Behind Von Karman Vortices
Above: A Von Karman vortex street downwind of the Canary Island chain in the eastern Atlantic Ocean off the coast of Africa on Feb. 27, 2015. Image credit: NASA Worldview. Editor's note ...