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METAR (meteorological aeronautical radio code)

METAR (meteorological aeronautical radio code)click for a larger image
A report transmitted by radio of the actual weather at a station at a particular time. An example of such a report for Donlon—a fictitious location—is METAR YUDO 221630Z 24015KMH 0600 R12/1000U FG DZ SCT010 OVC020 17/16 Q1018 BECMG TL1700 0800 FG BECMG AT1800 9999 NSW. It means, the “routine report for Donlon/International (its indicator is YUDO) issued on the 22nd of the month at 1630 UTC (221630Z); surface wind direction 240 degrees, wind speed 15 kmph (24015KMH); visibility 600 m (0600); the runway visual range representing a touchdown zone of runway 12 is 1000 m, and the runway visual range values have shown an upward trend during the previous 10 min (R12/1000U); fog and drizzle (FG DZ); scattered clouds at 300 m (SCT010); overcast at 600 m (OVC020); air temperature 17 °C Celsius, and dew-point temperature 16 °C (17/16); QNH 1018 hectopascals (Q1018); the trend during the next two hours is visibility is becoming 800 m in fog by 1700 UTC (BECMG TL1700 0800 FG); at 1800 UTC, visibility is becoming 10 m or more (BCMG AT1800); and nil significant weather (9999 NSW). UTC is Coordinated Universal Time.
References in periodicals archive ?
A standard briefing includes area forecasts, convective SIGMETS, center weather advisories, AIRMETs, SIGMETs, METARs, PIREPs, TAFs, Winds Aloft and NOTAMs.
Since ceiling is measured with respect to ground level, the interpolation of ceiling must account for the elevation of the reporting METAR station and the variation of terrain height between stations.
The official location for current METAR data reported through GTS is http://weather.
SPECIs must be generated whenever we or the system observe a weather change that meets a certain criteria and happens outside of the 47-52 minute METAR time frame.
It has the same map layers as you'll find in the Mobile app, plus it overlays weather radar, TFRs, METARs, AIRMETs, SIGMETs and satellite imagery.
Although the world gradually warmed up to METAR and TAF formats by 1970, the United States, Canada, and Mexico were locked in their ways and continued doing things like they had since the 1930s, using "SAO" (surface airways observation) format.
Since its measurements are directly vertical above the unit, the ceiling in the rest of the vicinity may well be above the 200 feet showing on the METAR.
RIGHT: XM weather radar, satellite and METAR coverage is sparse, with the inset showing actual data available to forecasters.
You select the METAR, Radar, and Strike products (Figure 5).