WSCN04 CWAO 171044
CZYZ SIGMET D1 VALID 171040/171440 CWUL-
CZYZ TORONTO FIR SEV ICE (FZRA) FCST WI 60NM WID LINE BTN N5058 W08616 - N4924
W08804 SFC/FL040 MOV ENE 20KT NC=