000 FTUS41 KBOX 170520 TAFACK TAF KACK 170520Z 1706/1806 35005KT P6SM FEW250 FM170800 03009KT P6SM SKC FM171400 05009KT P6SM FEW250 FM171700 08008KT P6SM FEW250 FM180300 13005KT P6SM BKN060=