Paul Yeager, author of Weather Whys: Facts, Myths, and Oddities
Below are two NOAA aerial images of Jopin, Missouri–one before and one after the EF-5 (the strongest category) tornado on May 22, 2011, along with what is described as the first helicopter video of the damage immediately following the storm.
Google Aerial image of Joplin, Missouri, before tornado
NOAA aerial image of Joplin, Missouri, after the May 22 tornado
