590 
FTUS41 KRNK 211720    
TAFLWB
TAF
KLWB 211720Z 2118/2218 21007KT P6SM BKN035
     FM212000 25007KT P6SM SCT025 BKN050
     FM220000 18007G14KT 4SM -TSRA BKN025CB
     FM220300 00000KT 4SM -SHRA BR OVC008
     FM220900 00000KT 1/4SM FG OVC001
     FM221300 24009KT P6SM SCT010 BKN035=