Thursday, May 6, 2010
what kind of damages do tornados cause ?
The Fujita scale classifies tornadoes according to the damage they cause. Almost half of all tornadoes fall into the F1 or "moderate damage" category. These tornadoes reach speeds of 73-112 m.p.h. and can overturn automobiles and mobile homes, rip off the roofs of houses, and uproot trees. Only about 1 percent of tornadoes are classified as F5, causing "incredible damage." With wind speeds in excess of 261 m.p.h., these tornadoes are capable of lifting houses off their foundations and hurling them considerable distances.
What Causes Tornadoes ?
Tornadoes form from warm air and cool air meet. These thunderstorms often produce Large Hail, Strong Winds, and Tornadoes. Tornadoes often happen in late Winter and Early Spring. Tornadoes happen mostly along the "Dryline ."
Wednesday, May 5, 2010
What is a Tornado
A tornado is a sping cloud of dust and debrese. The speeds on the ground are faster then a hurricane. The tornadoes move acrouse the ground at 30-40 mph. A tornado can be from 10 feet wide to 60 miles wide!
These are the categories for a Tornado
F0=up to 70 mph
F1=73-112 mph
F2=113-157 mph
F3=158-206 mph
F4=207-260 mph
F5=261+ mph
These are the categories for a Tornado
F0=up to 70 mph
F1=73-112 mph
F2=113-157 mph
F3=158-206 mph
F4=207-260 mph
F5=261+ mph
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