AVIATION WEATHER A+
What is the primary purpose of a METAR report in aviation?
To provide current weather observations at an airport or weather
station.
What does the abbreviation "CB" stand for in a METAR report?
Cumulonimbus.
What is the standard format for reporting wind direction in a METAR?
True north.
What does "CAVOK" signify in aviation weather reports?
Ceiling and visibility OK.
What is the primary use of a TAF in aviation?
To provide forecasted weather conditions for a specific airport.
What does "SCT" indicate in a METAR report?
Scattered clouds covering 3/8 to 4/8 of the sky.
What unit is typically used to report visibility in a METAR for most
countries?
Meters.
What is the meaning of "RVR" in aviation weather?
Runway Visual Range.
How is pressure altitude derived when altimeter settings are not
available?
By setting the altimeter to 29.92 inches of mercury (1013.25 hPa).
,What does the term "wind shear" refer to in aviation?
A sudden change in wind speed and/or direction over a short
distance.
What is the significance of the temperature/dew point spread in
aviation weather?
It indicates the likelihood of fog or condensation.
What is the main hazard associated with a microburst in aviation?
Intense downdrafts and rapidly changing wind conditions.
What does "QNH" represent in an ATIS or METAR report?
Altimeter setting adjusted to sea level pressure.
What is the primary cause of turbulence near mountains?
Mountain wave activity.
What does "TS" indicate in a METAR report?
Thunderstorm.
How is icing typically categorized in aviation weather reports?
Light, moderate, severe, or extreme.
What is the purpose of a SIGMET in aviation?
To warn pilots of significant weather phenomena that could impact
safety.
What is a "ceiling" in aviation weather terminology?
The height of the lowest cloud layer that is broken or overcast.
What type of clouds are most commonly associated with turbulence?
Cumulonimbus clouds.
, What does the term "LLWS" stand for in aviation weather?
Low-Level Wind Shear.
What is the primary hazard of flying in freezing rain?
Rapid ice accumulation on aircraft surfaces.
What does "VV" indicate in a METAR report?
Vertical visibility into an obscuration.
What is the difference between "METAR" and "SPECI" reports?
METARs are routine hourly weather reports, while SPECIs are
unscheduled updates for significant weather changes.
What is the significance of a "cold front" in aviation weather?
It often brings turbulence, wind shifts, and convective weather.
How are wind speeds typically reported in aviation weather?
In knots.
What does "NSW" mean in a TAF or METAR report?
No significant weather.
What is the hazard associated with flying near a jet stream?
Severe clear air turbulence.
What does "TEMPO" signify in a TAF?
Temporary weather conditions expected for less than an hour at a
time.
What is the effect of high-density altitude on aircraft performance?
Reduced engine power, thrust, and lift.
What is the primary purpose of a METAR report in aviation?
To provide current weather observations at an airport or weather
station.
What does the abbreviation "CB" stand for in a METAR report?
Cumulonimbus.
What is the standard format for reporting wind direction in a METAR?
True north.
What does "CAVOK" signify in aviation weather reports?
Ceiling and visibility OK.
What is the primary use of a TAF in aviation?
To provide forecasted weather conditions for a specific airport.
What does "SCT" indicate in a METAR report?
Scattered clouds covering 3/8 to 4/8 of the sky.
What unit is typically used to report visibility in a METAR for most
countries?
Meters.
What is the meaning of "RVR" in aviation weather?
Runway Visual Range.
How is pressure altitude derived when altimeter settings are not
available?
By setting the altimeter to 29.92 inches of mercury (1013.25 hPa).
,What does the term "wind shear" refer to in aviation?
A sudden change in wind speed and/or direction over a short
distance.
What is the significance of the temperature/dew point spread in
aviation weather?
It indicates the likelihood of fog or condensation.
What is the main hazard associated with a microburst in aviation?
Intense downdrafts and rapidly changing wind conditions.
What does "QNH" represent in an ATIS or METAR report?
Altimeter setting adjusted to sea level pressure.
What is the primary cause of turbulence near mountains?
Mountain wave activity.
What does "TS" indicate in a METAR report?
Thunderstorm.
How is icing typically categorized in aviation weather reports?
Light, moderate, severe, or extreme.
What is the purpose of a SIGMET in aviation?
To warn pilots of significant weather phenomena that could impact
safety.
What is a "ceiling" in aviation weather terminology?
The height of the lowest cloud layer that is broken or overcast.
What type of clouds are most commonly associated with turbulence?
Cumulonimbus clouds.
, What does the term "LLWS" stand for in aviation weather?
Low-Level Wind Shear.
What is the primary hazard of flying in freezing rain?
Rapid ice accumulation on aircraft surfaces.
What does "VV" indicate in a METAR report?
Vertical visibility into an obscuration.
What is the difference between "METAR" and "SPECI" reports?
METARs are routine hourly weather reports, while SPECIs are
unscheduled updates for significant weather changes.
What is the significance of a "cold front" in aviation weather?
It often brings turbulence, wind shifts, and convective weather.
How are wind speeds typically reported in aviation weather?
In knots.
What does "NSW" mean in a TAF or METAR report?
No significant weather.
What is the hazard associated with flying near a jet stream?
Severe clear air turbulence.
What does "TEMPO" signify in a TAF?
Temporary weather conditions expected for less than an hour at a
time.
What is the effect of high-density altitude on aircraft performance?
Reduced engine power, thrust, and lift.
