forecasting the changing weather
Post on 24-Feb-2016
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Forecasting the Changing Weather
Air masses and fronts
Air Mass
• A large body of air which has the characteristics of the area it forms over
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
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.
Warm FrontClouds cirrus cirrostratus altostratus nimbostratus
Weather Gentle steady rains occur ahead of the front
Warm Front
Cold FrontClouds altocumulus cumulonimbus
Weather Wind, heavy rains, thunderstorms occur AFTER the front passes
Cold Front
Stationary Front
Clouds Same as warm
front
Weather Rains along the entire front
Air mass stops moving, becomes stalled
Occluded FrontClouds Cumulonimbus
Weather Strong wind, heavy rains, tornadoes
Traveling cyclone
accuweather forecast
weather underground
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