FTOS31 LOWM 171400 TAF LOWW 171415Z 1715/1821 32013KT 9999 FEW030 BKN050 TX19/1814Z TN06/1803Z BECMG 1717/1719 30005KT BECMG 1807/1809 35010KT BECMG 1817/1819 12005KT=