000 FTUS41 KBTV 172321 TAFMSS TAF KMSS 172321Z 1800/1824 06014G25KT P6SM OVC200 FM181300 08011G18KT 6SM -SHRA BR OVC030 FM181500 10010G20KT 5SM -SHRA BR OVC020 FM181900 12009KT 6SM -SHRA BR SCT007 OVC020 FM182200 14007KT P6SM VCSH OVC021=