Weather Information Flashcards
What is a METAR?
A METAR is an hourly aviation routine weather report, a weather observer’s interpretation of the weather conditions at a given site and time. It contains the following information: type of report, ICAO station identifier, date and time of report, modifier (as required), wind, visibility, runway visual range (RVR) (as required), weather phenomena, sky condition, temperature/due point group, altimeter and remarks (RMK).
What is an ASOS?
This is an automated surface observation system. It takes minute-to-minute (reported hourly?) automatic surface observations of an area, not a particular area, necessary to generate METARs and other aviationweather information. This information may be transmitted over a discrete VHF radio frequency or the voice portion of a local NAVAID.
What is an ATIS?
ATIS stands for automated terminal information service. It gives a continuous broadcast of recorded non-control information. Its purpose is to improve controller effectiveness and to relieve frequency congestion by automating the repetitive transmission of essential but routine information. It is countinuously broadcast over a discrete VHF radio frequency or the voice portion of a local NAVAID, and updated upon the receipt of any official hourly or special weather. It gives weather, active runways, approaches, NOTAMs, and other important information. The broadcast is identified with alpha-numeric identifiers.
What is a TAF?
A terminal aerodrome forecast is
