FPCN11 CWNT 041930 AAA UPDATED FORECASTS FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE NORTHWEST TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 1:29 P.M. MDT TUESDAY 4 AUGUST 2026 FOR TODAY AND WEDNESDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 4:00 P.M. MDT. THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE. TODAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A THUNDERSTORM. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 THIS AFTERNOON. HIGH 22. UV INDEX 3 OR MODERATE. TONIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS THIS EVENING AND RISK OF A THUNDERSTORM. CLEARING OVERNIGHT. WIND NORTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 11. WEDNESDAY..INCREASING CLOUDINESS. 60 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON WITH RISK OF A THUNDERSTORM. WIND BECOMING NORTHWEST 20 KM/H IN THE MORNING. HIGH 16. UV INDEX 4 OR MODERATE. REMAINDER UNCHANGED. END