WSCN04 CWAO 272305
CZYZ SIGMET L6 VALID 272305/280305 CWUL-
CZYZ TORONTO FIR FRQ TS OBS WI 50NM WID LINE BTN N4418 W07810 - N4729 W07610 -
N4737 W07337 TOP FL350 MOV E 35KT WKN=