WSLI31 GLRB 230740 GLRB SIGMET A1 VALID 230740/231140 GLRB- GLRB ROBERTS FIR/UIR EMBD TS OBS AT 0730Z WI N1232 W01340 - N0630 W00956 - N0607 W01344 - N0904 W01655 TOP FL500 MOV W 12KT NC=