
The key to surviving a tornado is early warning and getting to an appropriate
shelter.
Mitigation
1. Keep trees and shrubbery trimmed. Make trees more wind resistant
by removing diseased or damaged limbs, then strategically remove
branches so that wind can blow through.
Table 13.2 The Fujita Tornado Scale
F-Scale Name Wind Speed Damage
F0 Gale tornado 40–72 mph Some damage to chimneys; breaks branches
off trees; pushes over shallow-rooted trees;
damages sign boards
F1 Moderate 73–112 mph The lower limit is the beginning of hurricane
wind speed; peels surface off roofs; mobile
homes pushed off foundations or overturned;
moving autos pushed off the roads;