WSCN05 CWAO 272323 CZUL SIGMET K4 VALID 272320/280320 CWEG- CZUL MONTREAL FIR SEV TURB FCST WI 180NM WID LINE BTN N5737 W07712 - N6315 W07359 - N6413 W07105 SFC/FL040 MOV E 10KT NC=