000 FTUS41 KLWX 160540 TAFIAD TAF KIAD 160540Z 1606/1712 35009KT P6SM SCT090 FM160800 35003KT P6SM SKC FM161700 18003KT P6SM SCT250 FM170100 16006KT P6SM SCT250 FM171000 13005KT P6SM VCSH SCT050 BKN250=