000 FTUS43 KGRB 180520 TAFGRB TAF KGRB 180520Z 1806/1906 27011KT P6SM BKN030 FM181200 27010KT P6SM VCSH FEW030 BKN090 FM181500 26009G15KT P6SM -RA SCT020 OVC050 FM181800 24009G16KT P6SM -RA OVC020 FM190100 26009KT P6SM BKN040=