Sunday, February 28, 2010

Hurricanes and Tornadoes

Hurricanes and tornadoes have affected so many lands as well as the environment. The chart demonstrates the hurricanes and tornadoes specification features.

It’s clear that the minimum wind speed is 74 mph for the tornadoes which is more than hurricanes with 40 mph. On the other hand the maximum speed of tornadoes, 250-300 mph, is higher than that of hurricanes, 155-200 mph. Both of them have different classification scales Saffir- Simpson C1- C5 for hurricanes and Fujita F0-F5 or tornadoes. According to the graph the duration for hurricanes is one week average and they begin over the warm oceans but the tornadoes remain for a few minutes to one hour usually and start over the land. It’s easy to know about the hurricanes in advance because they that can be predicted to 2-3 days in advance over a wide area and more exactly where it would take place in 6 to 10 hours beforehand, but unfortunately the tornadoes can be predicted only 20 minutes or less before they happen.

In conclusion, I would say that hurricanes and tornadoes are both dangerous and difficult to be faced. In my opinion I would say thanks god that hurricanes can be predicted.

No comments:

Post a Comment