WSCN02 CWAO 090518 CZEG SIGMET A2 VALID 090515/090915 CWEG- CZEG EDMONTON FIR SEV TURB FCST WI 90NM WID LINE BTN N6121 W06617 - N6400 W06200 - N6637 W06145 SFC/FL030 STNR NC=