FPCN11 CWNT 270637 AAC UPDATED FORECASTS FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE NORTHWEST TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 12:36 A.M. MDT MONDAY 27 OCTOBER 2025 FOR TONIGHT MONDAY AND MONDAY NIGHT. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. MDT. FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER. TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES. WIND UP TO 15 KM/H. LOW MINUS 4. WIND CHILL MINUS 6 OVERNIGHT. MONDAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES. WIND UP TO 15 KM/H. HIGH PLUS 1. WIND CHILL MINUS 6 IN THE MORNING. MONDAY NIGHT..MAINLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 5. WIND CHILL MINUS 7 OVERNIGHT. REMAINDER UNCHANGED. END