Types of Severe WEATHER and Fronts

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Types of Severe WEATHER and Fronts

• Objective
• Can I use meteorological data to predict weather?

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Weather
A daily change in the condition of the atmosphere
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Our Sun

• The sun provides the
• that is responsible for all of
  Earths weather

ENERGY
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Types of weather
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Severe weather
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Tornado

• A severe storm that forms as rapidly rotating
  funnel cloud.
• The peak season in Tennessee is March May

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Tropical Storms/Hurricanes

• Low pressure storm with high winds from the ocean

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Categories of Hurricanes

• 1. 74-95 mph minimal hurricane
• 2. 96-110 mph moderate hurricane
• 3. 111-130 mph extensive hurricane
• 4. 131-155 mph extreme hurricane (Andrew)
• 5. gt155 mph catastrophic hurricane

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Fronts

• The point where two air masses meet
• Causes change in weather

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Warm Front

• Warm air mass
• Will rise over cool air mass and gradually
  replaces the cold air.
• Cause light rain followed by hot humid weather

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Cold Front

• A cold air mass
• Cold front will push under warm front
• Causes severe weather- heavy rains and
  thunderstorms
• Followed by cool weather

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Occluded Front

• Forms when a warm air mass is caught between two
  colder air masses.
• Has cool temperatures and large amounts of rain
  and snow.

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Stationary Front

• Forms when a cold air mass meets a warm air mass.
  Both air masses do not have enough force to life
  the warm air mass over the cold.
• Days of cloudy, wet weather.

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Review Questions
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1.Can you show me a cold front on this map?
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2. Can you find a warm front on this map?
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3. Can you find the occluded front on this map?
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4. Can you find the stationary front on this map?
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5.What type of weather is the northeast having?
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• 6. Sharon woke up on a sunny morning and ate
  breakfast. Then she looked outside and saw tall,
  quickly-forming clouds. The clouds looked ready
  to rain. When she turned on the TV, she saw just
  what she thought--a forecast for sudden rains.
  What most likely caused the change in weather?