WVGR31 LGAT 171505 LGGG SIGMET A06 VALID 171505/172105 LGAT- LGGG ATHINAI FIR/UIR VA ERUPTION MT ETNA PSN N3744 E01500 VA CLD FCST AT 2100Z WI N3704 E01900 - N3645 E01954 - N3631 E01900 - N3704 E01900 SFC/FL130=