844  
FPCN17 CWVR 211754  
FORECASTS FOR SOUTHEASTERN YUKON AND NORTHERN BRITISH COLUMBIA ISSUED  
BY ENVIRONMENT CANADA AT 11:00 A.M. MST THURSDAY 21 MAY 2026 FOR  
TODAY AND FRIDAY.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 4:00 P.M. MST.  
 
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MAJOR REFERENCE ELEVATIONS:  
DEASE LAKE: 800 METRES.  
JADE CITY: 915 METRES.  
MUNCHO LAKE: 837 METRES.  
TETSA RIVER: 804 METRES.  
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DEASE LAKE.  
TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING SOUTHWEST 20 KM/H  
GUSTING TO 40 THIS AFTERNOON. HIGH 14. UV INDEX 5 OR MODERATE.  
TONIGHT..A FEW CLOUDS. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. LOW PLUS 2.  
FRIDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. 30 PERCENT CHANCE  
OF SHOWERS IN THE AFTERNOON. WIND BECOMING SOUTHWEST 20 KM/H GUSTING  
TO 40 IN THE AFTERNOON. HIGH 12. UV INDEX 4 OR MODERATE.  
 
CASSIAR MOUNTAINS.  
TODAY..CLEARING LATE THIS AFTERNOON. WIND SOUTHWEST 20 KM/H GUSTING  
TO 40. HIGH 14. UV INDEX 2 OR LOW.  
TONIGHT..A FEW CLOUDS. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. LOW PLUS 2.  
FRIDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. 40 PERCENT CHANCE  
OF SHOWERS LATE IN THE MORNING AND IN THE AFTERNOON. WIND BECOMING  
SOUTHWEST 20 KM/H GUSTING TO 40 NEAR NOON. HIGH 10. UV INDEX 4 OR  
MODERATE.  
 
WATSON LAKE.  
TODAY..A MIX OF SUN AND CLOUD. WIND WEST 20 KM/H GUSTING TO 40.  
HIGH 15. UV INDEX 4 OR MODERATE.  
TONIGHT..A FEW CLOUDS. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT  
THIS EVENING. LOW PLUS 2.  
FRIDAY..INCREASING CLOUDINESS. 30 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. WIND BECOMING WEST 20 KM/H GUSTING TO 40 NEAR NOON.  
HIGH 11. UV INDEX 4 OR MODERATE.  
 
MUNCHO LAKE PARK - STONE MOUNTAIN PARK.  
TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING WEST 20 KM/H GUSTING TO  
40 THIS AFTERNOON. HIGH 20. UV INDEX 5 OR MODERATE.  
TONIGHT..PARTLY CLOUDY. WIND WEST 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. LOW 6.  
FRIDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH  
40 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. WIND BECOMING  
WEST 20 KM/H GUSTING TO 40 IN THE AFTERNOON. HIGH 20. UV INDEX 5 OR  
MODERATE.  
 
END  
 
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