WSCN04 CWAO 271533
CZYZ SIGMET L1 VALID 271530/271930 CWUL-
CZYZ TORONTO FIR FRQ TSGR POSS +FC OBS WI 30NM WID LINE BTN N4647 W08259 - N4736
W08200 TOP FL560 MOV ENE 20KT INTSF=