WSNT01 CWAO 090843 CZQX SIGMET O3 VALID 090840/091240 CWEG- CZQX GANDER OCEANIC FIR/CTA SEV TURB FCST WI 90NM WID LINE BTN N6202 W06535 - N6400 W06230 - N6637 W06145 SFC/FL030 STNR NC=