WSCN04 CWAO 271225
CZYZ SIGMET J1 VALID 271225/271625 CWUL-
CZYZ TORONTO FIR FRQ TS OBS WI N4814 W07811 - N4907 W08048 - N4929 W07944 -
N4849 W07706 - N4814 W07811 TOP FL440 MOV ESE 20KT WKN=