Severe Weather

 

Types:              

1.    Rain storms/Snow Storms

2.    Thunderstorms

3.    Tornados

4.    Hurricanes

 

Rain storms/Snow storms

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-        Warm front meets cold front

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§       Summer= rain  winter= snow

Thunderstorms

-        Forms when cold front hits warm front

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-        Heavy rainstorms with thunder and lightning

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-        Florida is lightning capital of world

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o     Happens when the lightning heats up the air, causing air to expand, this expansion results in a sound wave:  Thunder

Tornadoes

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o     Develops in low, heavy cumulonimbus clouds

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-        Avg size:  .4 km  (~.25 miles)

Avg. path:  6 km  (~3.7 miles)

Winds greater than 59 mph

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-        Tornado Alley

o     In US- Great Plains area

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Hurricanes

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-        Form in summer

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§       Warm, moist air rises

§       Cool air moves in and air begins to spin

§       Air pressure in center drops, air spins faster and is drawn in to center

§       Rising air in center forms doughnut-shaped wall of winds, clouds, and rain

·       Air is calm in center:  called the “EYE”

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-        Heavy rain may cause flooding

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