Fronts By: Sam & Alex.

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Presentation transcript:

Fronts By: Sam & Alex

4 Major types of fronts Stationary Cold Warm Occluded A front that is not moving. Cold Leading edge of colder air that is replacing warmer air. Warm Leading edge of warmer air that is replacing cooler air. Occluded When a cold front catches up to a warm front.

Stationary front Stationary is when there is no warm or cold air advancing. Both air masses reach at a stalemate. These conditions can last for days. Winds are gentle and temperature is normal.

Cold front These fronts form when cold air mass meets a warm air mass. As the front passes winds can change direction and temperature usually drops.

Warm front Does the opposite of a cold front. Temperature will rise and warm will replace the cold air.

High Pressure Shown on TV would be an “H” symbols on the weather channel. High pressure areas air is more dense than low pressure air.

moving fronts

Low Pressure As shown on TV an “L” symbol. As winds blow into low pressure the air moves upward causing it to rain.