Great Lakes Satellite Ice Coverage
Provided by Environment Canada




Random Weather Facts

Weather Terms
Enhanced Fujita Scale or EF-Scale - A scale of wind damage intensity in which wind speeds are inferred from analysis of wind damage. All tornadoes and most other windstorms are assigned a numerical rating from this scale according to the most intense damage caused by the storm.
EF0 (weak)       6585 mph, light damage
EF1 (weak)       86110 mph, moderate damage
EF2 (strong)     111135 mph, considerable damage
EF3 (strong)     136165 mph, severe damage
EF4 (violent)    166200 mph, devastating damage
EF5 (violent)    >200 mph, incredible damage.