helibrief_help_-_aerodrome_actual_weather_-_metar_decode.pdf
. (Not from UK civil aerodromes) 5 Present weather + = Heavy (well developed in the case of +FC and +PO); - = Light; no qualifier = Moderate. BC=Patches BL=Blowing BR=Mist DR=Drifting DS=Duststorm DU=Dust DZ=Drizzle FC=Funnel cloud FG=Fog FU=Smoke FZ=Freezing GR=Hail (>5mm) GS=Small hail or snow pellets