1. Tornado Intensity Based on Damage
Fujita scale
Tornado Intensity
Based on Damage
Information from:

2. F0 Wind Speed: 40-72 mph Light Damage: Tree branches broken off
Minor roof damage
Road signs and boards damaged

3. 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

4. F2 Wind Speed: 113-157 mph Considerable Damage:
Mobile homes severely damaged
Trees uprooted
Strong homes unroofed

5. F3 Wind Speed: 158-206 mph Severe Damage: Trains overturned
Cars lifted off ground
Strong built homes walls collapsed

6. 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

7. F5 Wind Speed: 261- 318 mph Incredible Damage:
Strongly built homes completely blown away
Top stories demolished