581
FXCN01 CWHF 232012
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
SUNDAY 23 AUG
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KEY FORECAST POINTS:
- SHOWERS AT TIMES HEAVY WITH A RISK OF A THUNDERSHOWER TONIGHT
- IFR FLYING CONDITIONS TONIGHT AND MONDAY
- CLEARING ON TUESDAY
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SHORT RANGE DISCUSSION FOR 1800Z 23 AUG TO 0300Z 25 AUG.
MODEL DISCUSSION: USED RDPS
CONFIDENCE: MEDIUM TO HIGH
COMMENTS/IMPACTS: A TROUGH OF LOW PRESSURE APPROACHING FROM THE WEST
WILL BRING SHOWERS AT TIMES HEAVY TONIGHT ALONG WITH A RISK OF A
THUNDERSHOWER. SHOWERS WILL LIGHTEN AND BECOME OCCASIONAL ON MONDAY
ALONG WITH PATCHY DRIZZLE. IFR FLYING CONDITIONS ARE EXPECTED TO
CONTINUE HOWEVER IN FOG AND LOW CEILINGS.
LONG RANGE DISCUSSION FOR 0300Z 25 AUG TO 0300Z 28 AUG.
MODEL DISCUSSION: USED GDPS
CONFIDENCE: HIGH
COMMENTS/IMPACTS: SKIES ARE EXPECTED TO CLEAR ON TUESDAY IN THE WAKE
OF THE TROUGH AS WINDS VEER TO A DRIER MORE SOUTHWESTERLY
DIRECTION. THIS CLEARING SHOULD ALLOW FOR SOME AFTERNOON CONVECTION
ALONG THE SPINE OF NOVA SCOTIA. A LARGE AREA OF HIGH PRESSURE WILL
BRING LIGHT WINDS FOR WEDNESDAY AND THURSDAY ALONG WITH A MIX OF
SUN AND CLOUD. SOME AFTERNOON CONVECTION REMAINS POSSIBLE ON
WEDNESDAY.
END/METOC-HFX
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