000 FTUS41 KBOX 221720 TAFBOS TAF KBOS 221720Z 2218/2324 33011G20KT P6SM FEW250 FM222100 01007KT P6SM SKC FM222200 06006KT P6SM SKC FM230000 12005KT P6SM SKC FM230600 19005KT P6SM FEW250 FM231700 17012KT P6SM FEW250=