Raven Tornado

What is a tornado?

A tornado is a storm made from tornados. Natures most violent storms created from powerful thunderstorms. A tornado is a narrow violent column of air that extends from the thunderstorm to the ground. A tornado is hard to see because its sometimes invisible unless it has a funnel looking shape at the end of it.

Characteristics

Shape-tornadoes look like a narrow funnel reaching from the clouds to the ground. Size-tornadoes can be any large size. A normal tornado in the U.S is around 500ft across but some maybe as narrow as just a few feet across or nearly 2 miles long.Speed- a tornado can travel a long way because of how fast it's going a tornado can vary from 65 to250mph. Color- a tornado can be a lot of different colors depending on where you are and the local environment. A tornado can be white,gray,blue,green,black,and red. Some may even appear invisible.

Tools used

Doppler radar

According to the US Department of Energy, the main equipment used to predict tornadoes is the Doppler radar system. Doppler radar can measure wind velocity, direction of the wind inside the storm and the predicted rainfall.

Cause of thunderstorms

The intense spinning of a tornado is partly the result of the updrafts and downdrafts in the thunderstorm (caused by the unstable air) interacting with the wind shear, resulting in a tilting of the wind shear to form an upright tornado vortex.

Effects

Effects of a tornado

Impact of tornadoes. Like all natural disasters such as hurricanes, earthquakes, floods and others, they end up with massive destruction to homes, property, infrastructure and cause many deaths as well. Each year, about 60 people are killed by tornadoes, mostly from airborne debris.

Tornado satellite
Aftermath of a tornado
Tornado in action
Most tornado highlight

The "Tri-state tornado"

The most dangerous tornado in the U.S. Killed 695 people and injuring 2,027 people,traveling more than 300 miles through Missouri, Illinois and Indiana. On March 18, 1925 it was rated F5(fajita scale) at the top of the old fajita scale with winds of 260mph.

Preparing for a tornado

1.To begin preparing, you should build an emergency kit and make a family communications plan.

2.Listen to NOAA Weather Radio or to commercial radio or television newscasts for the latest information.

3. Be alert to changing weather conditions.

4Look for the following danger signs:

Dark, often greenish sky

Large hail

A large, dark, low-lying cloud (particularly if rotating)

Loud roar, similar to a freight train.

5.If you see approaching storms or any of the danger signs, be prepared to take shelter immediately.

Strength scale

Strength scale

The EF Scale (below) is the standard way to measure tornadoes based on wind damage. The original Fujita Scale (or F Scale) was developed by Dr. Theodore Fujita. All tornadoes, and other severe local windstorms, were assigned a number according to the most intense damage caused by the storm.

Websites

www.ducksters.com

Google.com

http://eschooltoday.com/natural-disasters/tornadoes/impact-of-tornadoes.html

http://video.nationalgeographic.com/video/101-videos/tornadoes-101

Credits:

Created with images by NOAA Photo Library - "nssl0054" • NOAA Photo Library - "wea04775"

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