666
FPCN11 CWNT 212134
FORECASTS FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE
NORTHWEST TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 4:00 P.M. MDT
TUESDAY 21 APRIL 2026 FOR TONIGHT WEDNESDAY AND WEDNESDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. MDT
WEDNESDAY.
THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE.
TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 6. WIND CHILL
MINUS 8 OVERNIGHT.
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH PLUS 1.
WIND CHILL MINUS 8 IN THE MORNING. UV INDEX 3 OR MODERATE.
WEDNESDAY NIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 6. WIND
CHILL MINUS 10 OVERNIGHT.
LUTSEL K'E REGION.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND UP TO 15
KM/H. LOW MINUS 13. WIND CHILL MINUS 8 THIS EVENING AND MINUS 16
OVERNIGHT.
WEDNESDAY..A MIX OF SUN AND CLOUD. CLEARING NEAR NOON. WIND UP TO 15
KM/H. HIGH MINUS 3. WIND CHILL MINUS 16 IN THE MORNING AND MINUS 7
IN THE AFTERNOON. UV INDEX 3 OR MODERATE.
WEDNESDAY NIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT. WIND UP
TO 15 KM/H. LOW MINUS 12. WIND CHILL MINUS 9 IN THE EVENING AND
MINUS 18 OVERNIGHT.
FT. RESOLUTION REGION INCLUDING HWY. 6.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND UP TO 15
KM/H. LOW MINUS 10. WIND CHILL MINUS 13 THIS EVENING.
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND BECOMING NORTH 20 KM/H IN THE
AFTERNOON. HIGH PLUS 1. WIND CHILL MINUS 12 IN THE MORNING. UV
INDEX 3 OR MODERATE.
WEDNESDAY NIGHT..PARTLY CLOUDY. WIND NORTH 20 KM/H BECOMING LIGHT IN
THE EVENING. LOW MINUS 8. WIND CHILL MINUS 13 OVERNIGHT.
HAY RIVER REGION INCLUDING ENTERPRISE.
TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 9. WIND CHILL
MINUS 7 THIS EVENING AND MINUS 14 OVERNIGHT.
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND BECOMING NORTHEAST 20 KM/H
NEAR NOON. HIGH MINUS 4. WIND CHILL NEAR MINUS 14. UV INDEX 3 OR
MODERATE.
WEDNESDAY NIGHT..PARTLY CLOUDY. WIND NORTHEAST 20 KM/H BECOMING LIGHT
IN THE EVENING. LOW MINUS 12. WIND CHILL MINUS 12 IN THE EVENING AND
MINUS 18 OVERNIGHT.
FT. PROVIDENCE REGION INCLUDING KAKISA - CHAN LAKE.
TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 12. WIND CHILL
MINUS 15 OVERNIGHT.
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH PLUS 3.
WIND CHILL MINUS 15 IN THE MORNING. UV INDEX 3 OR MODERATE.
WEDNESDAY NIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 11.
WIND CHILL MINUS 14 OVERNIGHT.
FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER.
TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 6. WIND CHILL
MINUS 10 OVERNIGHT.
WEDNESDAY..CLOUDY. SNOW BEGINNING IN THE MORNING AND ENDING LATE IN
THE AFTERNOON. AMOUNT 2 CM. WIND UP TO 15 KM/H. HIGH PLUS 2. WIND
CHILL MINUS 10 IN THE MORNING. UV INDEX 1 OR LOW.
WEDNESDAY NIGHT..CLOUDY. SNOW BEGINNING IN THE EVENING. AMOUNT 2 TO
4 CM. WIND BECOMING NORTHWEST 20 KM/H NEAR MIDNIGHT. LOW MINUS 8.
WIND CHILL MINUS 15 OVERNIGHT.
FT. LIARD REGION INCLUDING NAHANNI BUTTE - SAMBAA K'E.
TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 6. WIND CHILL
MINUS 10 OVERNIGHT.
WEDNESDAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF FLURRIES IN THE
MORNING. WIND UP TO 15 KM/H. HIGH 8. WIND CHILL MINUS 10 IN THE
MORNING. UV INDEX 2 OR LOW.
WEDNESDAY NIGHT..CLOUDY. 60 PERCENT CHANCE OF RAIN SHOWERS EARLY IN
THE EVENING. FLURRIES AT TIMES HEAVY BEGINNING IN THE EVENING.
SNOWFALL AMOUNT 2 TO 4 CM EXCEPT 5 CM IN A FEW LOCALITIES. WIND
BECOMING NORTHEAST 20 KM/H OVERNIGHT. LOW MINUS 2. WIND CHILL
MINUS 8 OVERNIGHT.
YELLOWKNIFE REGION.
TONIGHT..CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS EVENING
THEN PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 13. WIND CHILL
MINUS 6 THIS EVENING AND MINUS 19 OVERNIGHT.
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH ZERO.
WIND CHILL MINUS 19 IN THE MORNING. UV INDEX 3 OR MODERATE.
WEDNESDAY NIGHT..PARTLY CLOUDY. BECOMING CLOUDY NEAR MIDNIGHT. WIND
UP TO 15 KM/H. LOW MINUS 10. WIND CHILL MINUS 17 OVERNIGHT.
NORTH SLAVE REGION INCLUDING WEKWEETI - WHATI - BEHCHOKO.
TONIGHT..CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS EVENING
THEN PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 15. WIND CHILL
MINUS 7 THIS EVENING AND MINUS 19 OVERNIGHT.
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND UP TO 15 KM/H. HIGH MINUS 3.
WIND CHILL MINUS 19 IN THE MORNING AND MINUS 5 IN THE AFTERNOON. UV
INDEX 3 OR MODERATE.
WEDNESDAY NIGHT..PARTLY CLOUDY. BECOMING CLOUDY IN THE EVENING. LIGHT
SNOW OVER NORTHERN SECTIONS OVERNIGHT. AMOUNT 2 CM OVER NORTHERN
SECTIONS. WIND UP TO 15 KM/H. LOW MINUS 10. WIND CHILL MINUS 7 IN
THE EVENING AND MINUS 13 OVERNIGHT.
WRIGLEY REGION.
TONIGHT..INCREASING CLOUDINESS. PERIODS OF SNOW BEGINNING NEAR
MIDNIGHT. LOCAL AMOUNT 2 CM. WIND UP TO 15 KM/H. LOW MINUS 8. WIND
CHILL MINUS 11 OVERNIGHT.
WEDNESDAY..PERIODS OF SNOW. AMOUNT 2 CM. WIND UP TO 15 KM/H. HIGH
MINUS 2. WIND CHILL MINUS 11 IN THE MORNING AND MINUS 5 IN THE
AFTERNOON. UV INDEX 1 OR LOW.
WEDNESDAY NIGHT..PERIODS OF SNOW. AMOUNT 2 TO 4 CM. WIND UP TO 15
KM/H. LOW MINUS 11. WIND CHILL MINUS 9 IN THE EVENING AND MINUS 16
OVERNIGHT.
NORMAN WELLS - TULITA REGION.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF FLURRIES. WIND UP TO 15
KM/H. LOW MINUS 16. WIND CHILL MINUS 6 THIS EVENING AND MINUS 22
OVERNIGHT.
WEDNESDAY..CLOUDY. 30 PERCENT CHANCE OF FLURRIES EARLY IN THE
MORNING. PERIODS OF SNOW BEGINNING IN THE MORNING. AMOUNT 2 CM. WIND
BECOMING WEST 20 KM/H NEAR NOON. HIGH MINUS 6. WIND CHILL MINUS 22
IN THE MORNING AND MINUS 13 IN THE AFTERNOON. UV INDEX 1 OR LOW.
WEDNESDAY NIGHT..CLOUDY WITH 40 PERCENT CHANCE OF FLURRIES IN THE
EVENING. CLEARING OVERNIGHT. WIND WEST 20 KM/H BECOMING LIGHT IN THE
EVENING. LOW MINUS 19. WIND CHILL MINUS 13 IN THE EVENING AND
MINUS 26 OVERNIGHT.
FORT GOOD HOPE REGION.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF FLURRIES OVERNIGHT. WIND
UP TO 15 KM/H. LOW MINUS 15. WIND CHILL MINUS 8 THIS EVENING AND
MINUS 20 OVERNIGHT.
WEDNESDAY..CLOUDY. 30 PERCENT CHANCE OF FLURRIES EARLY IN THE
MORNING. SNOW BEGINNING IN THE MORNING THEN CHANGING TO 30 PERCENT
CHANCE OF FLURRIES IN THE AFTERNOON. AMOUNT 2 CM. WIND UP TO 15
KM/H. HIGH MINUS 7. WIND CHILL MINUS 19 IN THE MORNING AND MINUS 13
IN THE AFTERNOON. UV INDEX 1 OR LOW.
WEDNESDAY NIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES IN
THE EVENING. CLEARING OVERNIGHT. WIND UP TO 15 KM/H. LOW MINUS 20.
WIND CHILL MINUS 13 IN THE EVENING AND MINUS 24 OVERNIGHT.
DELINE.
TONIGHT..PARTLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 15. WIND CHILL
MINUS 13 THIS EVENING AND MINUS 21 OVERNIGHT.
WEDNESDAY..BECOMING CLOUDY IN THE MORNING THEN SNOW. AMOUNT 2 CM.
WIND UP TO 15 KM/H. HIGH MINUS 7. WIND CHILL MINUS 20 IN THE MORNING
AND MINUS 12 IN THE AFTERNOON. UV INDEX 1 OR LOW.
WEDNESDAY NIGHT..LIGHT SNOW ENDING IN THE EVENING THEN CLEARING. WIND
UP TO 15 KM/H. LOW MINUS 19. WIND CHILL MINUS 12 IN THE EVENING AND
MINUS 26 OVERNIGHT.
COLVILLE LAKE.
TONIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT. WIND UP TO 15
KM/H. LOW MINUS 18. WIND CHILL MINUS 16 THIS EVENING AND MINUS 22
OVERNIGHT.
WEDNESDAY..CLOUDY. SNOW BEGINNING IN THE MORNING. AMOUNT 2 CM. WIND
UP TO 15 KM/H. HIGH MINUS 10. WIND CHILL MINUS 22 IN THE MORNING AND
MINUS 15 IN THE AFTERNOON. UV INDEX 1 OR LOW.
WEDNESDAY NIGHT..LIGHT SNOW ENDING IN THE EVENING THEN CLEARING. WIND
UP TO 15 KM/H. LOW MINUS 23. WIND CHILL MINUS 18 IN THE EVENING AND
MINUS 30 OVERNIGHT. RISK OF FROSTBITE.
END
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