WSCN03 CWAO 180423
CZWG SIGMET B3 VALID 180420/180820 CWEG-
CZWG WINNIPEG FIR FRQ TS OBS WI 60NM WID LINE BTN N4929 W10007 - N4943 W09832 -
N4929 W09708 TOP FL390 MOV ENE 30KT NC=