Factors

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Factors
Clouds
Fronts
Forecasting
Severe Weather
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The state of the atmosphere at a specific time
and place
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What is weather?
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The amount of water vapor present in the air
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What is humidity?
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The measure of the amount of water vapor present
in the air compared to the amount needed for
saturation
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What is relative humidity?
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The five factors affecting weather
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What are air temperature, wind, humidity,
relative humidity and dew point?
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Temperature at which air is saturated and
condensation forms
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What is dew point?
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These three categories are used to classify clouds
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What are shape, height and amount of
precipitation?
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Water falling from a cloud
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What is precipitation?
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Precipitation in the form of lumps of ice
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What is hail?
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High clouds
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What are cirrostratus clouds?
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This is the cycle that forms the precipitation
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What is the water cycle?
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The boundary between two air masses of different
density, moisture, or temperature
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What is a front?
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This type of air lifts warm air up to form a cold
front
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What is cold air?
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This is a front were the air has stopped advancing
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What is a stationary front?
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When lighter, warmer air advances over heavier,
colder air
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What is a warm front?
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Large, swirling areas of low pressure
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What a cyclone?
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The person who foretells the weather
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Who is a meteorologists?
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Weather recorded on a map using symbols
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What is a station model?
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Large pressure differences cause these
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What are strong winds?
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On a station model it is the blue line with
triangles
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What is a cold front?
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Weather fronts move this direction
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What is the west to east?
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When heavy amounts of rain fall over a short
period of time this can occur
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What is flash flooding?
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This is the result of rapidly heating the air
around a bolt of lightning, around 30,000 c
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What is Thunder?
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A violent, whirling wind that moves in a narrow
path over land
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What is a tornado?
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It is considered the most powerful storm
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What is a hurricane?
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When the winds are 56 km/h, the temperature is
low, the visibility is less then 400 m in falling
snow and the condition persist more then 3 hours
the weather service will classify the weather as
this
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What is a blizzard?