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