FTUS46 KSTO 150520 TAFRBL TAF KRBL 150520Z 1506/1606 16005KT P6SM BKN250 WS002/16025KT FM150700 15009KT P6SM OVC100 FM151800 16008KT P6SM OVC050 TEMPO 1518/1522 -RA OVC030 FM152200 19010G16KT P6SM -RA OVC030=