https://www.youtube.com/watch?v=dipJir9ZpFU Cut them out!

High Pressure The atmospheric pressure is greater than its surrounding environment. Happy Weather! Sunny Days! H

Low Pressure The atmospheric pressure is lower than its surrounding environment. Lousy weather Rainy, cloudy, snowy L

Cold Front A leading edge of a cooler mass of air, replacing a warmer mass of air, which lies within a trough of low pressure. Looks like Icicles hanging

Warm Front A leading edge of a warmer mass of air, replacing a cooler mass of air. Typically slower than cold fronts. Looks like rising suns

Stationary Front A boundary between 2 different air masses, neither of which is strong enough to replace the other. Mixture of warm and cold since they do not replace each other.

Occluded Front Formed when a cold front overtakes a warm front. Usually forms around areas of low atmospheric pressure. “Suns” are now on the same side as the “icicles”.

Maritime Tropical Mass Originate over the warm waters of the tropics and Gulf of Mexico. The northward movement of tropical air masses transports warm, moist air into the U.S., increasing the potential for precipitation. mT

mP Maritime Polar Mass Cool, moist, and unstable. The source for the air masses are the northern Pacific and the north-western Atlantic. They usually produce clouds and precipitation as they move inland. mP

Continental Tropical Mass Hot, dry air masses which originate over northern Mexico and the southwestern U.S. The leading edge of this air mass is often called the dry line, due to the fact that they bring in hot, dry air. cT

Continental Polar Mass Cold to cool and dry, but not as cold as the Arctic air masses, stable and usually prevents cloud formation. Bring cold air during the winter and cool, relatively clear, rather pleasant weather in the summer. cP

Rain Clouds form when 2 different types of air masses run into each other. The warm air mass gets pushed up over the cold air mass.

Hurricanes Mainly form over the Atlantic or Eastern Pacific Oceans. Use warm water as fuel. http://video.nationalgeographic.com/video/101-videos/hurricanes-101

Windy Wind blows because of differences in air pressure from one location to another. Wind blows from areas of high pressure toward areas of low pressure. https://www.youtube.com/watch?v=D52rTzibFRc

Locate the 4 types of fronts on this weather map. Hint 1 Hint 2 Hint 3 Hint 4

Cold Fronts

Warm Front

Stationary Front

Occluded Front

Cut them out!

High pressure = sunny/clear Low pressure = clouds/snow/low temps High pressure = sunny/clear The low pressure will continue to move and cause temperatures to drop. Maybe even snow in Chicago.

Warm front moving out = not as warm as yesterday/somewhat cloudy Stationary front = it will stay rainy/cloudy for a few days Warm front moving out = not as warm as yesterday/somewhat cloudy High pressure = clear skies/happy weather