343  
FXCN01 CWHF 260811  
 
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 0830Z ON  
SUNDAY 26 OCT  
 
===================================================================  
KEY FORECAST POINTS:  
 
- VFR FLYING CONDITIONS TODAY  
- MVFR CEILINGS POSSIBLE TONIGHT AND MONDAY  
- A CHANCE OF SHOWERS TONIGHT AND MONDAY  
 
===================================================================  
SHORT RANGE DISCUSSION FOR 0600Z 26 OCT TO 0300Z 28 OCT.  
MODEL DISCUSSION: USED RDPS  
CONFIDENCE: HIGH  
COMMENTS/IMPACTS: VFR FLYING CONDITIONS EXPECTED TODAY WITH A CHANCE  
OF LATE AFTERNOON CONVECTION GIVING A BRIEF SHOWER OR TWO. THE  
CHANCE OF SHOWERS INCREASES TONIGHT AND INTO MONDAY AS A LOW  
PRESSURE CENTRE BACKS ITSELF OVER NOVA SCOTIA FROM THE EAST.  
CEILINGS MAY LOWER TO MVFR TONIGHT AND MONDAY.  
 
LONG RANGE DISCUSSION FOR 0300Z 28 OCT TO 0300Z 31 OCT.  
MODEL DISCUSSION: USED GDPS  
CONFIDENCE: HIGH  
COMMENTS/IMPACTS: THE MID-WEEK PRESSURE PATTERNS CONTINUES TO SEE A  
LARGE AREA OF LOW PRESSURE TO THE SOUTH WITH A LARGE AREA OF HIGH  
PRESSURE TO THE NORTH. THIS WILL BRING A MODERATE TO STRONG  
NORTHERLY FLOW WHICH DIMINISHES TO MODERATE NORTHEASTERLY AND THEN  
LIGHT ON THURSDAY. ON TUESDAY THE STRONGER NORTHERLY FLOW GIVES  
MAINLY CLOUDY SKIES WITH A CHANCE OF SHOWERS BEFORE THE LOW SINKS  
FURTHER SOUTH. AS THE LOW SINKS AND THE AREA OF HIGH PRESSURE  
BUILDS FROM THE NORTH A GENERAL MIX OF SUN AND CLOUD CAN BE  
EXPECTED FOR WEDNESDAY AND THURSDAY.  
 
END/METOC-HFX  
 
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