794
FXCN01 CWHF 171915
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
WEDNESDAY 17 SEP
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KEY FORECAST POINTS:
- CLOUD AND A CHANCE OF SHOWERS FOR THURSDAY AND FRIDAY.
- COOLER AND DRIER ON THE WEEKEND.
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SHORT RANGE DISCUSSION FOR 1800Z 17 SEP TO 0300Z 19 SEP.
MODEL DISCUSSION: USED RDPS.
CONFIDENCE: HIGH.
COMMENTS/IMPACTS: LATEST GUIDANCE SHOWING A BETTER CHANCE OF ALL DAY
SHOWERS THAN PREVIOUS RUN OF THE RDPS. SO I CHANGED THE FORECAST TO
ADD ALL DAY CHANCE OF SHOWERS THURSDAY.
LONG RANGE DISCUSSION FOR 0300Z 19 SEP TO 0300Z 22 SEP.
MODEL DISCUSSION: USED RDPS/GDPS.
CONFIDENCE: HIGH.
COMMENTS/IMPACTS: A COLD FRONTAL TROUGH IS FORECAST TO DROP THROUGH
THE MARITIMES ON FRIDAY. LIGHT SOUTHWEST WINDS AND SOME SUNNY
PERIODS ARE EXPECTED IN THE MORNING AHEAD OF THE TROUGH BUT CLOUD
AND A FEW SHOWERS ARE FORECAST TO MOVE IN DURING THE AFTERNOON AS
THE TROUGH MOVES THROUGH THE REGION. WINDS SHIFT TO LIGHT TO
MODERATE NORTHERLY IN ITS WAKE.
ON SATURDAY DIMINISHING NORTHWEST WINDS AND SUNNY SKIES ARE
FORECAST AS AN AREA OF HIGH PRESSURE MOVES IN FROM THE WEST.
COOLER DRIER AIR IS FORECAST.
THE RIDGE MOVES THROUGH THE MARITIMES ON SUNDAY AND WINDS GO FROM
LIGHT AND VARIABLE TO LIGHT TO MODERATE SOUTHWEST IN BEHIND IT. A
MAINLY SUNNY DAY IS FORECAST.
END/METOC-HFX
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