WSNT01 CWAO 060500 CZQX SIGMET F1 VALID 060500/060900 CWUL- CZQX GANDER OCEANIC FIR/CTA SEV MTW OBS AT 0440Z WI 120NM WID LINE BTN N6100 W04330 - N6300 W04300 FL200/360 STNR NC=