WSCV31 GVAC 251800
GVSC SIGMET 1 VALID 251815/252215 GVAC-
GVSC SAL OCEANIC FIR/UIR EMBD TS OBS AT 1800Z 
WI N1441 WO2302 - N1510 WO2321 -
N1513 WO2349 - N1459 WO2402 -
N1428 WO2359 TOP FL450 MOV W 05KT WKN=