Forecasting the Changing Weather
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Transcript of Forecasting the Changing Weather
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Forecasting the Changing Weather
Air masses and fronts
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Air Mass
• A large body of air which has the characteristics of the area it forms over
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Air masses are classified by source area:
• C= Continental - dry formed over land• M= Maritime - wet, formed over water• P= Polar – cold, formed in high latitudes• T = Tropical – warm, formed in low latitudes
mP – maritime polarcP – continental polarmT – maritime tropicalcT – continental tropical
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Weather Patterns
• Weather patterns are caused by the movement of air masses and what happens when different air masses collide.
• Front– boundary between 2 air masses. They meet but do not mix.
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Warm FrontClouds cirrus cirrostratus altostratus nimbostratus
Weather Gentle steady rains occur ahead of the front
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Warm Front
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Cold FrontClouds altocumulus cumulonimbus
Weather Wind, heavy rains, thunderstorms occur AFTER the front passes
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Cold Front
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Stationary Front
Clouds Same as warm
front
Weather Rains along the entire front
Air mass stops moving, becomes stalled
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Occluded FrontClouds Cumulonimbus
Weather Strong wind, heavy rains, tornadoes
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Traveling cyclone
accuweather forecast
weather underground
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