WSCN25 CWAO 270832 CZUL SIGMET C5 VALID 270830/271230 CWUL- CZUL MONTREAL FIR FRQ TS OBS WI /N4955 W07450/15 NW CYMT - /N4841 W07452/45 N CYPP - /N4847 W07602/75 NW CYPP - /N4950 W07555/60 W CYMT - /N4955 W07450/15 NW CYMT TOP FL460 MOV SE 20KT WKN RMK GFACN33=