000 FTUS41 KLWX 160859 AAA TAFIAD TAF AMD KIAD 160859Z 1609/1712 04006KT P6SM SKC FM161700 18003KT P6SM SCT250 FM170100 16006KT P6SM SCT250 FM171000 13005KT P6SM VCSH SCT050 BKN250=