WSCN03 CWAO 270917 CZWG SIGMET G3 VALID 270915/271315 CWEG- CZWG WINNIPEG FIR SEV TURB FCST WI 90NM WID LINE BTN N5820 W08335 - N6041 W08438 - N6310 W08137 - N6449 W07548 SFC/FL050 MOV E 10KT NC=