000 FTUS42 KCHS 170539 TAFSAV TAF KSAV 170539Z 1706/1806 18004KT P6SM SCT250 FM171400 20008KT P6SM SCT250 FM172000 17011KT P6SM SCT150 BKN250 FM180000 19006KT P6SM SCT150 BKN250=