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| the condition of the atmosphere at a certain time and place |
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| a measure of how warm or cold something is |
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| the weight of the atmosphere pressing at a certain place |
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| the amount of moisture in the air |
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| masses of tiny water droplets or ice crystals |
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| water that falls from the atmosphere as rain, snow, sleet or hail |
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| the average conditions of a place over a long period of time |
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| a person who studies the weather to try to predict future weather patterns |
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| measures wind direction, tells the direction wind is coming FROM |
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| puffy clouds with flat bottoms, usually indicate nice weather |
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| big, dark, puffy clouds; often produce thunder, lightning and rain |
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| low, sheet-like gray clouds that blanket the sky; overcast; sometimes bring rain |
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| high, wispy clouds made up of ice crystals; seen in fair weather but rain can follow in a day or two |
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| the pattern of rising and falling air |
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| causes wind on Earth to blow in a curved path from west to east or east to west |
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| winds that come from the poles and blow east to west |
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| warmer winds blowing in the middle latitudes |
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| area of calm weather with no surface winds |
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| large body of air that has the same temperature and moisture level throughout |
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| a place where two different air masses meet |
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| a cold air mass bumps against a warm air mass, moving under the warm air mass; brings strong storms, thunderstorms likely; temps drop when the front passes |
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| warm air mass moves up and over a cold air mass; stratus clouds form along the front, often bringing rainy, drizzly conditions; temps rise after the front passes |
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| forms when 2 air masses meet and stop moving; brings clouds and precipitation over many days |
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| two cold air masses come toward each other, pushing warm air between them up; brings cold temps and plenty of snow or rain |
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| colder air blows from the water during the day over the land |
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| warmer air blows from the land at night over the water |
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| flow of air or water in a certain direction |
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| "rivers of air" in the atmosphere that dip, bend and change direction |
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| unusual warming of the Pacific Ocean and can bring more rain and warmer temps to the US |
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| unusual cooling of the Pacific Ocean and can create a more active hurricane season in the Atlantic |
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