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Tornado Scale of Damage - The late Dr. Fujita ranked tornadoes according
to the damage they left behind- F0:least damage to F5:greatest damage.
| SCALE |
WIND ESTIMATE *** (MPH) |
TYPICAL DAMAGE |
| F0 |
< 73 |
 Light damage-
Some damage to chimneys; branches broken off trees;
shallow-rooted trees pushed over; sign boards damaged. |
| F1 |
73-112 |
Moderate damage-
Peels surface off roofs; mobile homes pushed off
foundations or overturned; moving autos blown off roads. |
| F2 |
113-157 |
 Considerable damage-
Roofs torn off frame houses; mobile homes demolished; boxcars
overturned; large trees snapped or uprooted; light-object missiles
generated; cars lifted off ground. |
| F3 |
158-206 |
Severe damage-
Roofs and some walls torn off well-constructed houses; trains
overturned; most trees in forest uprooted; heavy cars lifted off
the ground and thrown. |
| F4 |
207-260 |
 Devastating damage-
Well-constructed houses leveled; structures with weak foundations
blown away some distance; cars thrown and large missiles generated. |
| F5 |
261-318 |
Incredible damage
Strong frame houses leveled off foundations and swept away;
automobile-sized missiles fly through the air in excess of 100
meters (109 yds); trees debarked; incredible phenomena will occur. |
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