110  
FXCN01 CWHF 092017  
 
FORECAST DISCUSSION FOR OPS AREA ALPHA AND THE ECHOES, CFB HALIFAX  
PROPERTIES AND 12 WING SHEARWATER ISSUED BY AVIATION AND DEFENCE  
SERVICES OF ENVIRONMENT AND CLIMATE CHANGE CANADA AT 2030Z ON  
FRIDAY 09 OCT  
 
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KEY FORECAST POINTS:  
 
- A FEW SHOWERS AND THUNDERSHOWERS EARLY THIS EVENING  
- GUSTY NORTHWEST WINDS TONIGHT AND SATURDAY  
 
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SHORT RANGE DISCUSSION FOR 1800Z 09 OCT TO 0300Z 11 OCT.  
MODEL DISCUSSION: USED RDPS  
CONFIDENCE: HIGH  
COMMENTS/IMPACTS: A TROUGH OF LOW PRESSURE PASSING THROUGH WILL GIVE  
A FEW SHOWERS AND THUNDERSHOWERS EARLY THIS EVENING. WINDS INCREASE  
AND STRENGTHEN OUT OF THE NORTHWEST IN THE WAKE OF THE TROUGH.  
 
LONG RANGE DISCUSSION FOR 0300Z 11 OCT TO 0300Z 14 OCT.  
MODEL DISCUSSION: USED GDPS  
CONFIDENCE: HIGH  
COMMENTS/IMPACTS: A RIDGE OF HIGH PRESSURE WILL GIVE SUNNY SKIES  
ALONG WITH LIGHT WINDS ON SUNDAY. LATER IN THE DAY THE CLOUDS AND  
SOUTHWEST WINDS INCREASE ON THE BACK SIDE OF THE RIDGE. ON MONDAY A  
COLD FRONT APPROACHES FROM THE NORTH WHILE THE MOISTURE REMNANTS OF  
ISAIAS SHOULD PASS TO OUR SOUTH. BETWEN THESE FEATURES WE SHOULD  
REMAIN CLOUDY BUT A DECENT CHANCE OF SHOWERS REMAINS. STRONG  
SOUTHWEST WINDS EARLY ON MONDAY DIMINISH BETWEEN THESE TWO  
FEATURES. ON TUESDAY A NORTHEAST FLOW DEVELOPS WHICH SHOULD  
MAINTAIN PLENTY OF CLOUD.  
 
END/METOC-HFX  
 
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