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g28 - What is weather What Refers to the state of the...

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Unformatted text preview: What is weather? What Refers to the state of the atmosphere at a specific time and place. specific The one thing that you can talk to anybody about about If you don’t like the weather just wait around it will change in Texas it What are some of the factors that affect the weather? weather? Air Temperature Air Temperature is the Temperature measure of the average amount of motion in particles. motion Wind Wind a natural movement of air of any velocity; especially : the earth's especially air or the gas surrounding a planet in natural motion horizontally Humidity Humidity The amount of water vapor present in the The air air Relative Humidity -is a measure of the amount of water vapor present in the air compared to the amount needed for saturation at a specific temperature saturation Clouds Clouds Masses of small water droplets or tiny ice Masses crystals that float in the air. crystals Three main types are cirrus, cumulus, and Three stratus. stratus. Other clouds are a mixture of these three Other main types. main Cirrus Cirrus Cirro- means “curled” or “feathery” Form highest in the sky; are made up of ice Form crystals; and appear as curls, tufts, or wisps. wisps. Usually signal the end of clear weather. Cumulus Cumulus Cumulo- means “heaped” or “piled” Cottony clouds with flat, usually gray bases, Cottony and puffy, bright tops. and Usually signal good weather, but if Usually atmosphere is unstable, can build into towering clouds that produce showers and thunderstorms. thunderstorms. Stratus Stratus Strato- means “layer-like” or “sheet-like.” Low-lying, dull-colored clouds that form in Low-lying, layers or sheets. layers Usually bring drizzling rain or light-falling Usually snow. snow. Alto Alto A prefix meaning “middle range of clouds “ prefix and used to describe clouds that lie from 6,500-18,500 ft. (1,980-5,640m). 6,500-18,500 Nimbus Nimbus A rain cloud Other Cloud Types Other Cirrocumulus Cirrostratus Stratocumulus Cumulonimbus More Cloud Types More Altostratus Altocumulus Nimbostratus Precipitation Precipitation Water that falls from the clouds Air temperature determines the form of Air precipitation that falls precipitation 4 main types of Precipitation: Rain, Sleet, main Snow and Hail Snow Types of Precipitation Types Precipitation Rain Sleet Sno w Hail Air Masses Air A large body of air that has large properties similar to the part of the Earth’s surface over which it develops. Air Mass Map Air Fronts Fronts A boundary between two air boundary masses of different density, moisture, or temperature. Cold Front Cold Warm Front Warm Occluded Front Occluded Stationary Front Stationary Severe Weather Severe Thunderstorm s Lightning Tornadoe s More Severe Weather More Hurricanes Blizzards Severe Weather Safety Severe Watches- conditions are favorable WatchesWarnings- conditions already exist Examples- Tornadoes, Flooding, ExamplesThunderstorms, Blizzards, Winter Mixes and Hurricanes Hurricanes Lightning Lightning Tornado Alley Tornado Fujiti Scale Fujiti Weather Map Weather Hurricane Hurricane Hurricane Scale Hurricane Hurricane Charley Hurricane Two sources of Two forecasting weather forecasting – Data collected from Data upper atmosphere upper – Data collected on the Data Earth’s surface Earth’s Weather Station Model Weather Isobars Isobars Isobars-connect points Isobars-connect of the “same” of Examples: Examples: temperature and wind speed speed The further away the The lines the lower the wind speed wind ...
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