000 FTUS41 KBUF 172320 TAFIAG TAF KIAG 172320Z 1800/1824 30012G18KT P6SM VCSH BKN050 FM180300 28011G18KT P6SM SCT050 FM181100 26014G23KT P6SM BKN040 FM181500 27015G26KT P6SM VCSH OVC030 FM181800 29016G25KT 2SM -SN OVC025 FM182100 30015G23KT 6SM -SHSN OVC025=