Definitions for "METAR"
The acronym translates from French as Aviation Routine Weather Report
MET eorological viation eport. An evaluation of selected weather elements from a site on or near the ground according to a set of procedures. It may include type of report, station identifier, date and time of report, a report modifier, wind, visibility, runway visual range, weather and obstructions to vision, sky condition, temperature and dew point, altimeter setting and remarks. METARS are normally issued either hourly or half hourly, but if there is a significant change in conditions at the site, a SPECI (special report) may be issued. See also SYNOP.
Coded aerodrome Met report.
Principle data format for distribution of NWS data. DEOS is capable of ingesting METAR formatted data.