855 FTUS46 KPDT 161740 TAFPDT TAF KPDT 161740Z 1618/1718 25015G23KT P6SM -RA SCT040 BKN050 OVC070 FM162300 28015G25KT P6SM SCT070 BKN090 FM170400 25013KT P6SM FEW070 FEW090 FM171000 15007KT P6SM SCT080 BKN120 FM171300 21005KT P6SM SCT180 SCT250=