000 FTUS41 KRNK 171720 TAFBLF TAF KBLF 171720Z 1718/1818 28015G23KT P6SM SCT040 BKN070 FM180100 31010G20KT P6SM SCT250 FM181200 30012G22KT P6SM FEW025 SCT035 FM181700 29015G25KT P6SM SCT050 BKN080=