981  
FOCN45 CWWG 241900  
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM  
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 2:00 PM CDT FRIDAY MARCH  
24 2017.  
 
ALERTS IN EFFECT...FOG ADVISORY FOR EAST CENTRAL ALBERTA AND WEST  
CENTRAL SASKATCHEWAN.  
 
SYNOPTIC OVERVIEW...DEEP UPPER LOW OVER WRN HUDSON STRAIT WITH TROF  
THROUGH ERN HUDSON BAY INTO NRN ONTARIO. DIGGING LONG WAVE UPPER TROF  
OVER ERN PACIFIC WITH UPPER LOW SPINNING OFF VANCOUVER ISLAND. STRONG  
SW UPPER JET PUSHING UP FROM OREGON COAST INTO SERN BC. ZONAL FLOW  
OVER PRAIRIES. AT THE SURFACE, 993 MB LOW OVER NW QUEBEC WITH TROF  
SOUTHWARD. 1033 MB HIGH OVER NRN MANITOBA WITH RIDGE FROM KIVALLIQ  
TO SRN MB. 992 MB LOW WEST OF VANCOUVER ISLAND.  
 
DISCUSSION...  
 
PRAIRIES...AREA OF LIFTING FOG OVER EAST CENTRAL ALBERTA MAINLY EAST  
OF HIGHWAY 2 CORRIDOR TO THE SASKATCHEWAN BORDER INTO THE  
KINDERSLEY AND WRN BATTLEFORD REGIONS. FOG IS EXPECTED TO DISSIPATE  
BY EARLY AFTERNOON. LIGHT WINDS OUT OF SURFACE RIDGE TOGETHER WITH  
GOOD LOW LEVEL INVERSION CONTRIBUTED TO THE FOG FORMATION OVERNIGHT.  
TEMPERATURES IN SOUTHEASTERN SASKATCHEWAN AND SOUTHWESTERN MANITOBA  
ARE SLOW TO INCREASE ABOVE LOW SINGLE DIGIT DAYTIME HIGHS AS  
SIGNIFICANT SNOWPACK STILL EXISTS IN THE AREA. FLOOD CONCERNS IN THE  
AREA AS FORECASTS TREND WARMER. TEMPERATURE FORECASTS HAVE BEEN  
SCALED BACK IN THESE AREAS FOR NEXT COUPLE OF DAYS.  
 
NEXT WEATHER OF CONCERN WILL BE ASOCTD WITH ANOTHER CLIPPER SYSTEM  
THAT WILL BE DEVELOPING OVER SRN ALBERTA IN RESPONSE TO NEXT PACIFIC  
IMPULSE MOVING IN ON SW FLOW ALOFT OVER WRN CANADA. PROGS INDICATE  
SYSTEM SHOULD TAKE A TRACK A LITTLE FARTHER NORTH THAN MOST RECENT  
CLIPPER WITH LOW OVER RED DEER AREA THIS EVENING MOVING TO PRINCE  
ALBERT BY 15Z SAT AND THE PAS BY 00Z SUNDAY. ONCE AGAIN, CLIPPER  
WILL BRING AN AREA OF MODERATE TO HEAVY SNOW NORTH OF THE LOW TRACK  
MAINLY OVER EAST CENTRAL SK INTO WEST CENTRAL MANITOBA TONIGHT INTO  
SATURDAY WITH 10-15 CM LIKELY FROM LA RONGE AREA THROUGH FLIN FLON  
TO THOMPSON AREA. SNOWFALL WARNINGS WILL BE ISSUED THIS AFTERNOON  
FOR THIS WEATHER TONIGHT. AN AREA OF FREEZING RAIN WILL ALSO BE  
ASSOCIATED WITH THIS SYSTEM AND FREEZING RAIN WARNINGS WILL BE  
ISSUED THIS AFTERNOON AS WELL.  
 
EASTERN ARCTIC...TIGHT NORTHERLY GRADIENT BETWEEN ARCTIC RIDGE OVER  
KIVALLIQ AND TROF OVER ERN HUDSON BAY HAD PRODUCED STRONG NW  
WINDS OF 50 TO 70 KM/H OVER NAUJAAT. WINDS HAVE STARTED TO  
DIMINISH AND VISIBILIITES THAT WERE AS LOW AS 1/2 MILE HAVE IMPROVED  
TO 1 1/2 MILE BLOWING SNOW. THE BLIZZARD WARNING HAS BEEN ENDED.  
 
WESTERN ARCTIC...THE NEXT IN A SERIES OF WEAK IMPULSES WILL BRING  
ANOTHER FEW CM TO THE SOUTHWESTERN PART OF THE NWT.  
 
END/BUKOSKI/MACKAY  
 
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