We just don't know why tornado occurrence is on the rise.  Some experts think it is due to global warming while others blame it on El Nino, but for the most part meteorologists just don’t know why.  2008 is on it’s way to breaking all previous records for number of tornadoes in one season.  So far this year 1,191 twisters have been recorded, the most tornadoes in one year was recorded in 2004 with 1,817.

What exactly is a tornado?   A twister is described as a circular column of air that extends down from a thunderstorm to the earth below.  Tornadoes happen all over the world, but are the most common in the United States, occurring  east of the Mississippi River more frequently in the spring and summer months.  Tornadoes have been recorded in the great plains, with Texas having record numbers of twisters, as well.

Tornadoes are classified as weak, strong and violent.  A violent storm can have winds up to 250 miles per hour.  Fortunately, only 2 percent of recorded tornadoes are classified as violent.  The largest percent (69 percent) are considered weak, while 29 percent rate as strong.  Tornadoes can be a mile wide and remain on the ground for 50 miles spewing destruction in it’s wake.

There are some warning signs that need to be observed by people living in tornado areas; watch for dark ominous clouds and skies that appear green in color, a wall of clouds, hail and a loud roar that sounds like a freight train approaching.  Also, listen to your radios and televisions.  A tornado watch indicates there is a possibility of severe storms in your locale, a warning means a violent storm is imminent.

Tornadoes can develop very quickly so advance warnings are not always possible.  Be aware of approaching thunderstorms that can spawn tornadoes and take all necessary precautions.