WSCN04 CWAO 180922
CZYZ SIGMET B1 VALID 180920/181320 CWUL-
CZYZ TORONTO FIR FRQ TS OBS WI 40NM WID LINE BTN N4246 W08209 - N4358 W08140 -
N4622 W08211 TOP FL370 MOV NNE 30KT NC=