000 FTUS41 KRNK 170520 TAFLWB TAF KLWB 170520Z 1706/1806 00000KT 1/4SM FG OVC001 FM171200 20002KT 2SM BR SCT002 OVC110 FM171400 22003KT P6SM VCSH SCT030 OVC080 FM172300 23011KT P6SM OVC100 FM180500 25005KT P6SM OVC050=