530  
FOCN45 CWWG 171900  
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM  
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 2:00 PM CDT WEDNESDAY  
OCTOBER 17 2018.  
 
ALERTS IN EFFECT...NONE.  
 
SYNOPTIC OVERVIEW... UPPER RIDGE NOW OVER ALBERTA TO BE FLATTENED  
THURSDAY AS CLOSED UPPER LOW NOW OVER EASTERN BEAUFORT SEA MOVES  
JUST NORTHEAST OF GREAT SLAVE LAKE. MULTI-CENTRED ARCTIC VORTEX  
PERSISTS OVER EASTERN ARCTIC. BAROCLINIC WAVE NOW OVER SOUTHERN  
YUKON TO SPIN UP INTO FRONTAL SURFACE LOW WHICH MOVES THRU  
NORTHERNMOST MB THURSDAY.  
 
DISCUSSION...  
 
PRAIRIES... MAINLY SUNNY FOR THE NEXT COUPLE DAYS IN THE PRAIRIES  
WITH TEMPERATURES FORECAST TO CLIMB ABOVE SEASONAL, FOR THE FIRST  
TIME IN WHAT SEEMS LIKE A MONTH FOR EASTERN AREAS. FOR WESTERN AREAS  
NEAR RECORD TEMPERATURES ARE FORECAST AFTER THE PAST COUPLE WARM  
DAYS. THE MACKENZIE LOW PUSHES SOUTHEASTWARD AND SPAWNS A SECONDARY  
LOW CENTRE WHICH WILL MOVE INTO NORTHERN MANITOBA BRINGING 2-4 CM OF  
SNOW TO THE REGION ON THURSDAY.  
 
WESTERN ARCTIC... INUVIK LOW WILL GIVE TOTAL SNOW OF 5-15 CM ALONG  
ITS TRACK AS IT MOVES TOWARDS BAKER LAKE BY THURSDAY EVENING, BUT  
MAINLY OVER UNPOPULATED AREAS. KUGLUKTUK IS FORECAST TO SEE THE  
MOST, BUT EVEN THERE ACCUMULATIONS WILL NOT REACH WARNING LEVELS  
BEFORE SNOW ENDS THURSDAY EVENING. A RISK OF FREEZING RAIN EXISTS  
NEAR THE LOW THIS AFTERNOON. AS THE COLD FRONT MOVES SOUTH ALONG THE  
MACKENZIE RIVER VALLEY TONIGHT AND INTO THURSDAY PRECIP TYPING MAY  
BE SOMEWHAT PROBLEMATIC AT THAT TIME AS WELL.  
 
EASTERN ARCTIC... A FEW SNOW SHOWERS KICKING AROUND BAFFIN ISLAND  
OTHERWISE NIL SIG WX.  
 
END/BAGGALEY/GREENHOUGH  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab CANADA Page Main Text Page