METARs, TAFs, ATIS Flashcards
Define METAR
Meteorological Aerodrome Report: Standardized code used to report weather conditions for pilots and meteorologists.
Define ICAO
International Civil Aviation Organization: Law and Standards airlines follow across the globe.
Purpose: Safe and orderly development of interanational aviation.
How often are METAR weather reports transmitted?
Every hour
What type of report would be issued to update for rapidly changing weather conditions?
SPECI, of special METAR report
ow should the six-digit date and time e interpreted in a METAR report
First two digits are the day of the present month
Followed by 4 digits (Hour and Minutes) Zulu time UTC (Coordinated Universal Time
What modified is induced if the report was issued with no human intervention ?
AUTO
What do the first three digits of a coded wind group indicate in METAR?
The direction of the wind in degree.
What would 5SM indicate in METAR?
Surface visibility of five statute miles
What weather would be shown as “+SHRA” on METAR?
Heavy Rain Showers
Define the amount of cloud coverage sky clear?
Sky Clear- Fine
Define sky coverage for, FEW
Few clouds, 1/8 of the sky covered or less, but not zero — Fine
Define sky coverage, scattered
Sky covered 3/8-4/8
Define sky covered, broken
Sky covered at 5/8-7/8
Define sky covered, overcast
8/8 or Overcast
METAR temperature and dew point are reported in what units?
Celsius
How would a sea level pressure reading of 30.17” of mercury be reported in a METAR
A3017
Decode the following METAR
METAR KJFK 022147Z 03012G18KT 6SM BR BRK012 BKN050 13/07 A2989
Regular METAR
Airport John F Kennedy
Time and Date: 02 of current month 21 hour 47 minutes Zulu time
Wind 030 Degrees at 12 Knots Gusting 18
Visibility 6 Statute Miles
Weather: Mist
Clouds: First layer broken at 1,200 ft second layer broken at 5,000ft
Temperature 13* C Due point 07* C
Alter terrain 29.89” of Mercury
What is the coverage area forecast in a Terminal Aerodrome Forecast (TAF)?
TAFs cover an area of 5 statute miles around the airport.
Terminal Aerodrome Forecasts are updated __________ and the forecast is valid or for ________.
4 times a day; 24 hours
If surface visibility was forecast to be 10 statute miles, how would it appear in TAF for that airport?
P6SM, as the P = plus and TAF usually report for 5 Statue miles around the airport.
What is the only cloud type reported in TAF?
Cumulonimbus Clouds
If a rapid, significant change is expected to occur it would be indicated with…what letters?
FM: Fast Moving
A weather fluctuation that is expected to last for less than an hour would be indicated by what letters in a TAF?
TEMPO
A gradual change over less than two hours would be indicated by what letters in a TAF?
BECMG: Becoming
