WSCN04 CWAO 310846
CZYZ SIGMET A8 VALID 310845/311245 CWUL-
CZYZ TORONTO FIR FRQ TS OBS WI 40NM WID LINE BTN N4423 W08217 - N4323 W08018 -
N4404 W07832 - N4352 W07653 TOP FL360 MOV ESE 40KT NC=