When clouds drift across the top 100 feet of the John Hancock Building a reverse draft is created on the opposite side of the building where a plume of cloud will often circle and re-circle in the same general area for minutes at a time or until a breeze from a different direction hits the building. It’s especially interesting looking from inside the building on the observation deck. There may be beautiful blue skies on three sides of the building and then what looks like a storm brewing on the fourth side. The Hancock may not create weather, but it alters it at 1,100 feet. On the next partly cloudy day with a mild wind, look up and watch something remarkable. Besides, it’s a good neck stretch.
Ralph Braseth 