Tornado Intensity Based on Damage Fujita scale Tornado Intensity Based on Damage Information from: http://www.spc.noaa.gov/faq/tornado/f-scale.html
F0 Wind Speed: 40-72 mph Light Damage: Tree branches broken off Minor roof damage Road signs and boards damaged
F1 Wind Speed: 73-112 mph Moderate Damage: Trees snapped Roofs damaged Fragile built and mobile homes pushed off foundation Moving automobiles blown off roads
F2 Wind Speed: 113-157 mph Considerable Damage: Mobile homes severely damaged Trees uprooted Strong homes unroofed
F3 Wind Speed: 158-206 mph Severe Damage: Trains overturned Cars lifted off ground Strong built homes walls collapsed
F4 Wind Speed: 207-260 mph Devastating Damage: Houses leveled leaving piles of debris Weak structures blown away some distance Cars thrown as far as 300 yards in the air
F5 Wind Speed: 261- 318 mph Incredible Damage: Strongly built homes completely blown away Top stories demolished