911 
FTUS41 KBOX 172320
TAFACK
TAF
KACK 172320Z 1800/1824 27012KT P6SM SCT250
     FM180600 30005KT P6SM SCT110
     FM181400 29009KT P6SM SCT050
     FM182100 25015G21KT P6SM FEW200=