Today in tornado news: New York City of all places is under a watch until 8pm, reports NBC New York. The watch also applies to the surrounding counties of Nassau, Westchester, Rockland, Orange, and Putnam. Philadelphia and Boston are in the same boat, notes the Huffington Post. Today's forecast follows yesterday's rare treat of sunset views in the city known as "Manhattan-henge." Click to see photos. (More New York City stories.)