FPCN11 CWNT 181643 FORECASTS FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE NORTHWEST TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 11:00 A.M. MDT WEDNESDAY 18 MARCH 2026 FOR TODAY AND THURSDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 4:00 P.M. MDT. THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE. TODAY..CLEARING THIS AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 10. WIND CHILL MINUS 26 THIS MORNING AND MINUS 15 THIS AFTERNOON. UV INDEX 2 OR LOW. TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 22. WIND CHILL MINUS 15 THIS EVENING AND MINUS 27 OVERNIGHT. THURSDAY..INCREASING CLOUDINESS. 60 PERCENT CHANCE OF FLURRIES IN THE AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 7. WIND CHILL MINUS 27 IN THE MORNING AND MINUS 10 IN THE AFTERNOON. UV INDEX 1 OR LOW. LUTSEL K'E REGION. TODAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS AFTERNOON. BECOMING SUNNY LATE THIS AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 16. WIND CHILL NEAR MINUS 25. UV INDEX 1 OR LOW. TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 26. WIND CHILL MINUS 22 THIS EVENING AND MINUS 34 OVERNIGHT. RISK OF FROSTBITE. THURSDAY..A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH MINUS 19. WIND CHILL MINUS 34 IN THE MORNING AND MINUS 23 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. FT. RESOLUTION REGION INCLUDING HWY. 6. TODAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF FLURRIES NEAR NOON. CLEARING THIS AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 15. WIND CHILL MINUS 27 THIS MORNING AND MINUS 21 THIS AFTERNOON. UV INDEX 1 OR LOW. TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 25. WIND CHILL MINUS 23 THIS EVENING AND MINUS 33 OVERNIGHT. RISK OF FROSTBITE. THURSDAY..INCREASING CLOUDINESS. 60 PERCENT CHANCE OF FLURRIES IN THE AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 12. WIND CHILL MINUS 33 IN THE MORNING AND MINUS 18 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. HAY RIVER REGION INCLUDING ENTERPRISE. TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH MINUS 15. WIND CHILL MINUS 27 THIS MORNING AND MINUS 21 THIS AFTERNOON. UV INDEX 2 OR LOW. TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 24. WIND CHILL MINUS 25 THIS EVENING AND MINUS 32 OVERNIGHT. RISK OF FROSTBITE. THURSDAY..INCREASING CLOUDINESS. 60 PERCENT CHANCE OF FLURRIES IN THE AFTERNOON. WIND BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH MINUS 15. WIND CHILL MINUS 32 IN THE MORNING AND MINUS 24 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. FT. PROVIDENCE REGION INCLUDING KAKISA - CHAN LAKE. TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH MINUS 14. WIND CHILL MINUS 24 THIS MORNING AND MINUS 17 THIS AFTERNOON. UV INDEX 1 OR LOW. TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 24. WIND CHILL MINUS 17 THIS EVENING AND MINUS 29 OVERNIGHT. RISK OF FROSTBITE. THURSDAY..A MIX OF SUN AND CLOUD. BECOMING CLOUDY NEAR NOON WITH 30 PERCENT CHANCE OF FLURRIES IN THE AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 12. WIND CHILL MINUS 29 IN THE MORNING AND MINUS 18 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER. TODAY..A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH MINUS 16. WIND CHILL MINUS 34 THIS MORNING AND MINUS 22 THIS AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 25. WIND CHILL MINUS 22 THIS EVENING AND MINUS 33 OVERNIGHT. RISK OF FROSTBITE. THURSDAY..A MIX OF SUN AND CLOUD. 60 PERCENT CHANCE OF FLURRIES LATE IN THE MORNING AND EARLY AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 17. WIND CHILL MINUS 33 IN THE MORNING AND MINUS 24 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. FT. LIARD REGION INCLUDING NAHANNI BUTTE - SAMBAA K'E. TODAY..A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH MINUS 9. WIND CHILL MINUS 27 THIS MORNING AND MINUS 14 THIS AFTERNOON. UV INDEX 1 OR LOW. TONIGHT..PARTLY CLOUDY. BECOMING CLOUDY NEAR MIDNIGHT WITH 60 PERCENT CHANCE OF FLURRIES OVERNIGHT. WIND UP TO 15 KM/H. LOW MINUS 18. WIND CHILL MINUS 14 THIS EVENING AND MINUS 27 OVERNIGHT. THURSDAY..CLOUDY WITH 60 PERCENT CHANCE OF FLURRIES IN THE MORNING THEN A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH MINUS 11. WIND CHILL MINUS 27 IN THE MORNING AND MINUS 14 IN THE AFTERNOON. UV INDEX 1 OR LOW. YELLOWKNIFE REGION. TODAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH MINUS 16. WIND CHILL MINUS 30 THIS MORNING AND MINUS 24 THIS AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 27. WIND CHILL MINUS 24 THIS EVENING AND MINUS 34 OVERNIGHT. RISK OF FROSTBITE. THURSDAY..A MIX OF SUN AND CLOUD. BECOMING CLOUDY IN THE AFTERNOON WITH 60 PERCENT CHANCE OF FLURRIES LATE IN THE AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 16. WIND CHILL MINUS 36 IN THE MORNING AND MINUS 20 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. NORTH SLAVE REGION INCLUDING WEKWEETI - WHATI - BEHCHOKO. TODAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH MINUS 18. WIND CHILL MINUS 35 THIS MORNING AND MINUS 25 THIS AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 31. WIND CHILL MINUS 25 THIS EVENING AND MINUS 37 OVERNIGHT. RISK OF FROSTBITE. THURSDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON THEN 30 PERCENT CHANCE OF FLURRIES LATE IN THE AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 18. WIND CHILL MINUS 37 IN THE MORNING AND MINUS 24 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. WRIGLEY REGION. TODAY..A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH MINUS 19. WIND CHILL MINUS 36 THIS MORNING AND MINUS 26 THIS AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 30. WIND CHILL MINUS 26 THIS EVENING AND MINUS 36 OVERNIGHT. RISK OF FROSTBITE. THURSDAY..BECOMING CLOUDY IN THE MORNING WITH 30 PERCENT CHANCE OF FLURRIES LATE IN THE MORNING AND IN THE AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 18. WIND CHILL MINUS 36 IN THE MORNING AND MINUS 22 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. NORMAN WELLS - TULITA REGION. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF FLURRIES. WIND UP TO 15 KM/H. HIGH MINUS 24. WIND CHILL MINUS 40 THIS MORNING AND MINUS 33 THIS AFTERNOON. FROSTBITE IN MINUTES. UV INDEX 1 OR LOW. TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 32. WIND CHILL MINUS 34 THIS EVENING AND MINUS 42 OVERNIGHT. FROSTBITE IN MINUTES. THURSDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING. WIND UP TO 15 KM/H. HIGH MINUS 20. WIND CHILL MINUS 36 IN THE MORNING AND MINUS 24 IN THE AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. FORT GOOD HOPE REGION. TODAY..CLEARING THIS AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 21. WIND CHILL MINUS 41 THIS MORNING AND MINUS 25 THIS AFTERNOON. FROSTBITE IN MINUTES. UV INDEX 1 OR LOW. TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 37. WIND CHILL MINUS 25 THIS EVENING AND MINUS 48 OVERNIGHT. FROSTBITE IN MINUTES. THURSDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING. WIND UP TO 15 KM/H. HIGH MINUS 23. WIND CHILL MINUS 48 IN THE MORNING AND MINUS 31 IN THE AFTERNOON. FROSTBITE IN MINUTES. UV INDEX 1 OR LOW. DELINE. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF FLURRIES THIS AFTERNOON. WIND UP TO 15 KM/H. HIGH MINUS 22. WIND CHILL MINUS 39 THIS MORNING AND MINUS 32 THIS AFTERNOON. RISK OF FROSTBITE. UV INDEX 1 OR LOW. TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 32. WIND CHILL MINUS 32 THIS EVENING AND MINUS 42 OVERNIGHT. FROSTBITE IN MINUTES. THURSDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD NEAR NOON. WIND UP TO 15 KM/H. HIGH MINUS 21. WIND CHILL MINUS 40 IN THE MORNING AND MINUS 25 IN THE AFTERNOON. FROSTBITE IN MINUTES. UV INDEX 1 OR LOW. COLVILLE LAKE. TODAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH MINUS 25. WIND CHILL MINUS 42 THIS MORNING AND MINUS 33 THIS AFTERNOON. FROSTBITE IN MINUTES. UV INDEX 1 OR LOW. TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 35. WIND CHILL MINUS 33 THIS EVENING AND MINUS 44 OVERNIGHT. FROSTBITE IN MINUTES. THURSDAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH MINUS 25. WIND CHILL MINUS 41 IN THE MORNING. FROSTBITE IN MINUTES. UV INDEX 1 OR LOW. END