918 
FTUS41 KPHI 171734
TAFTTN
TAF
KTTN 171734Z 1718/1818 05008KT P6SM SCT050 BKN100
     FM172000 34006KT P6SM VCSH BKN050
     FM180100 31004KT P6SM FEW050 BKN100
     FM180400 VRB03KT P6SM SCT200
     FM181200 33005KT P6SM SCT250
     FM181500 30008KT P6SM FEW050=