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What does SKC or CLR on a weather report mean?
Sky is clear, i.e. virtually no clouds.
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What does FEW mean on a weather report?
FEW means few clouds, i.e. greater than 0-2/8 of the sky is covered with clouds.
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What does SCT mean on a weather report?
SCT means scattered clouds, i.e. 3/8 to 1/2 of sky is covered with clouds
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What does BKN mean on a weather report?
BKN means broken clouds, i.e. 5/8 to 7/8 of sky is covered.
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What does OVC mean on a weather report?
OVC means overcast, i.e. the sky is covered with clouds.
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What does VV mean on a weather report?
VV means indefinite ceiling, i.e. the clouds are on the surface with vertical visibility given in hundreds of feet.
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What does CB mean on a weather report?
Cumulonimbus clouds.
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What does TCU mean on a weather report?
Towering cumulonimbus.
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The height above the ground of the lowest broken or overcast layer of clouds, or the vertical visibility into an obscuration is called what?
The ceiling.
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What is a METAR?
Aviation Routine Weather Report.
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How often are METAR updated?
Each hour.
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How is wind reported on a METAR?
Wind is reported as a 5 digit humber. The frist three digits are the wind direction relative to true north. The last two digits are wind velocity in KT knots.
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The altimeter reading on a METAR is given in how many decimal places?
2: i.e. 30.05
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What weather report gives you the current airport conditions?
METAR
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What is a TAF?
Terminal Aerodrome Forecast (Terminal Forecasts)
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What is the radius around the airport of a TAF?
5 mile radius
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How many times a day is a TAF issued?
4 times a day
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How long is a TAF forecast valid?
24 hours
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Area Forecasts (FA) are issued how many times a day?
3
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How much territory does a FA (Area Forecast) cover?
Typically several states.
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Area Forecasts (FA) are issued three times a day and cover how many different areas in the United States?
6
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What is the FD?
Winds and Temperature Aloft Forecast
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What is a FD used for?
To help determine time in route for cross country flights.
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AIRMETs are what?
Airmen's Meteorological Information. Weather advisories or warnings for adverse weather conditions.
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AIRMETs are issued for the same areas as what?
Area Forecasts
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How often are AIRMETs issued?
4 times a day
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What information does a AIRMET Sierra cover?
(Mountain Obscuration or IFR) ceilings less than 1000 feet and/or visibility less than 3 miles affecting over 50% of the area at one time. Extensive mountain obscuration.
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What information does a AIRMET Tango cover?
(Turbulence) Moderate Turbulence, sustained surface winds of 30 knots or more.
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What information does a AIRMET Zulu cover?
(Icing) Moderate icing, freezing levels
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