Sunday, January 2, 2011

Hurricanes and tornadoes


Hurricanes and tornadoes

The Table shows information about two physically powerful winds, which are hurricanes and tornadoes. Also there are a lot common between them. However, they are rather different types of natural disasters.

To begin with, tornadoes have a slightly lower minimum speed but a much higher maximum speed of 40 mph, whereas that of a hurricane is 74 mph. The maximum wind speed of most severe storms of tornadoes is about 250 – 300 mph, while hurricanes slightly less within 155 – 200 mph. about the classification scale, hurricanes is classified on the Saffir – Simpson C1 – C5, whereas tornadoes is calculated on Fujita F0 – F5.Torndoes actually comes suddenly and his stay for a small period around few minutes, some up to a few hours, comparing with hurricanes, is stay for long 1 week. The prediction of hurricane is 2-3 days in advance for a wide area and its hit 6-10 hours beforehand, but tornadoes can be predicated just one minute before it hits. Tornadoes usually covered over land, while hurricanes began over warm oceans.

In brief, hurricanes are more predictable, also stay more than tornadoes and have less wind speed.

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