000 FTUS46 KSTO 130520 TAFRBL TAF KRBL 130520Z 1306/1406 16015KT P6SM -RA OVC100 FM131400 15005KT 6SM -RA BR OVC040 FM131800 16015G21KT 6SM -RA BR OVC025 FM140000 16008KT P6SM -RA OVC025=