What are the differences between the Fujita Scale and the Enhanced Fujita Scale?

Question

What are the differences between the Fujita Scale and the Enhanced Fujita Scale?

Answer 1

the Fujita Scale measures damage caused by Tornadoes

The new Enhanced Fujita Scale continues to use F0-F5 ratings but is based on additional calculations of wind and damage.

Answer 2

The Enhanced Fujita scale is basically an upgrade of the original Fujita scale. In coordination with the SPC, NWS and the NSSL, decided to upgrade it to base it on the amount of damage to different structures instead of actual wind speed. Some examples of objects ranging from wood frame homes to brick homes, to malls, churches, well built steel buildings.

EF-0 65-85 mph light damage will occur. Roofs damaged or missing, trees uprooted, very weak structures damaged.

EF-1 86–110 mph Extensive roof damage, cars can be tossed, outside walls can collapse.

EF-2 111–135 mph Weak homes can be severely damaged, roofs completely missing, cars tossed for many yards.

EF-3 136–165 mph Entire stories of well-constructed houses destroyed, severe damage to large buildings, heavy cars can be lifted off the ground and thrown, structures with weak foundations can be blown away.

EF-4 166–200 mph Well-constructed houses and whole frame houses completely leveled. Major damaged to larger buildings.

EF-5 >200 mph Strong frame houses leveled off foundations and swept away; high-rise buildings have significant structural deformation. Not likely to survive if not underground.