621
FXCN01 CWHF 270813
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
TUESDAY 27 OCT
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KEY FORECAST POINTS:
- NORTHWEST WINDS DIMINISHING THIS EVENING
- WARM ON THURSDAY AND FRIDAY
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SHORT RANGE DISCUSSION FOR 0600Z 27 OCT TO 0300Z 29 OCT.
MODEL DISCUSSION: USED RDPS
CONFIDENCE: HIGH
COMMENTS/IMPACTS: A LARGE AREA OF HIGH PRESSURE WILL BUILD FROM THE
GREAT LAKES TODAY CAUSING MODERATE TO STRONG NORTHWESTERLIES TO
DIMINISH THIS EVENING.
LONG RANGE DISCUSSION FOR 0300Z 29 OCT TO 0300Z 01 NOV.
MODEL DISCUSSION: USED GDPS
CONFIDENCE: HIGH
COMMENTS/IMPACTS: ON THURSDAY THE AREA OF HIGH PRESSURE SLIDES
SOUTHEAST OF NOVA SCOTIA GIVING AN INCREASING SOUTHWEST FLOW. ON
FRIDAY A TROUGH OF LOW PRESSURE APPROACHES FROM THE NORTHWEST
MAINTAINING A SOUTHWEST FLOW AND GIVING ABOVE NORMAL TEMPERATURES
FOR BOTH THURSDAY AND FRIDAY. WHILE SOME CLOUD IS EXPECTED THE
CHANCE OF PRECIPITATION ASSOCIATED WITH THE TROUGH SHOULD BE
PRIMARILY FRIDAY NIGHT. ON SATURDAY A LIGHT TO MODERATE NORTHWEST
FLOW IS EXPECTED IN THE WAKE OF THE TROUGH WITH MAINLY CLOUDY SKIES
AND A RETURN TO MUCH COOLER TEMPERATURES.
END/METOC-HFX
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