977  
FOCN45 CWWG 192000  
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM  
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 2:00 PM CST TUESDAY  
FEBRUARY 19 2019.  
 
ALERTS IN EFFECT...EXTREME COLD FOR TALOYOAK.  
 
SYNOPTIC OVERVIEW...RIDGING OVER THE WEST COAST BEING FLATTENED BY  
AN IMPULSE SLIDING SOUTHWARD. TROUGHING OVER THE ARCTIC AND PRAIRIES.  
AT THE SURFACE, DEPARTING HIGH PRESSURE OVER THE UPPER MIDWEST AND  
LOW PRESSURE OVER NORTHERN SASKATCHEWAN, NORTHERN ALBERTA AND  
MACKENZIE DELTA.  
 
DISCUSSION...  
 
AB...LOW TO TRACK THROUGH NORTHERN ALBERTA TONIGHT BRINGING SOME  
SNOW TONIGHT INTO WEDNESDAY. GENERALLY JUST A FEW CM FORECAST WITH  
IT. NORTHWESTERLY FLOW AND PRESSURE RISES BEHIND THE LOW MAY BRING  
SOME GUSTS TO 50 KM/H AND LOCAL BLOWING SNOW TO THE QE2 CORRIDOR  
WEDNESDAY.  
 
SK AND MB...A LOW WILL QUICKLY TRACK NORTHEAST THROUGH THE MIDWEST  
ON WEDNESDAY, WITH THE NORTHERN FRINGES OF ITS PRECIPITATION SHIELD  
POISED TO DELIVER UNIMPRESSIVE SNOWFALL AMOUNTS SOUTHEAST OF  
WINNIPEG. PERHAPS AS MUCH AS 4 CM IS EXPECTED.  
 
EASTERN ARCTIC...NIL SIG WX.  
 
WESTERN ARCTIC...LOW TRACKS FROM THE MACKENZIE DELTA TOWARDS NORTH  
SLAVE BY WEDNESDAY EVENING. NO SIGNIFICANT SNOWFALL EXPECTED WITH IT  
AND SOME WIND GUSTS TO 60 KM/H ON THE BACKSIDE WEDNESDAY. THE  
EASTERN KITIKMEOT WILL EXPERIENCE WIND CHILL VALUES NEAR EXTREME  
COLD CRITERIA ONCE AGAIN TONIGHT.  
 
END/MOODIE/PATTEN  
 
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