TornadoesBy Haleigh Miller

Picture: Daphne zaras NOAA

What are Tornadoes?

• Tornadoes are destructive vortex's with violent rotating winds, with a funnel appearance extending from a thunderstorm cloud.

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The Conditions • Tornadoes form in unusually violent

thunderstorms when there is sufficient instability and wind shear present in the lower atmosphere.

• Instability refers to unusually warm and humid conditions in the lower atmosphere, and possibly cooler than usual conditions in the upper atmosphere.

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Time frame for a tornadoes

Tornadoes usually last just a few minutes. The

shortest last for only a few seconds, but the longest

(and most dangerous) can last for over an hour (but

these are extremely rare)!

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What time of the year do they occur

• Tornadoes can occur at any time of the year.

• In the southern states, peak tornado occurrence is in March through May, while peak months in northern states are during the summer.

• Tornadoes are most likely between 3 and 9 p.m. but have been known to occur at all hours

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Damage to propertyF0: Gale tornado (40-72 mph). Light damage. F1: Moderate tornado (73-112 mph). Moderate damage. F2: Significant tornado (113-157 mph). Considerable damage. F3: Severe tornado (158-206 mph). Severe damage. F4: Devastating tornado (207-260 mph). Devastating damage. F5: Incredible tornado (261-318 mph). Incredible damage

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Pictures!!

Pictures:tornado-facts.com

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There are even Flaming tornadoes!

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Click Me!!!Tornado 101