WSCN02 CWAO 271706 CZEG SIGMET O5 VALID 271705/272105 CWEG- CZEG EDMONTON FIR SEV TURB FCST WI 120NM WID LINE BTN N5705 W07835 - N6232 W07900 - N6455 W07400 SFC/FL040 MOV E 10KT NC=