WSOS31 LOWW 141440 LOVV SIGMET U02 VALID 141500/141630 LOWW- LOVV WIEN FIR SEV TURB FCST AT 1500Z WI N4804 E01613 - N4753 E01715 - N4700 E01638 - N4709 E01541 - N4804 E01613 FL240/320 STNR WKN=