My lab manual for the course I'm taking on climate and waters (Philip Suckling's Studies in Weather and Climate) on tornados rated F5 on the Fujita Tornado Scale:
F5: 261-318 mph Incredible Tornado. Incredible damage: Strong frame houses lifted off foundations and carried considerable distance to disintegrate; automobile-sized missiles fly through the air in excess of 300 ft (100 m); trees debarked; incredible phenomena will occur.
Editorial comment: Needs more exclamation points. :)
Edit: Fine. Because you all have no imaginations, this is what was in my head:
INCREDIBLE TORNADO! INCREDIBLE DAMAGEZ!!! STRONG FRAME HOUSES NO LONGER IN KANSAS TOTO!!!!1!1! SERIOSLY WERE TALKING LIKE CAR-SIZED SHIT FLYING AT YOU!!!!! TREES DEBARKED! THEY CAN NO LONGER BARK PPL!!! INCREDIBLE PHENOMENA WILL OCCUR!!!! POSSIBLY PSYCHICS!!!! ONLY $39.95!!!!!