303
FXCN01 CWHF 160811
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 16 SEP
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KEY FORECAST POINTS:
- LIGHT WINDS AND CLEAR SKIES INTO WEDNESDAY.
- CLOUD AND A SLIGHT CHANCE OF SHOWERS BOTH THURSDAY AND FRIDAY
AFTERNOONS.
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SHORT RANGE DISCUSSION FOR 0600Z 16 SEP TO 0300Z 18 SEP.
MODEL DISCUSSION: USED RDPS.
CONFIDENCE: HIGH.
COMMENTS/IMPACTS: A RIDGE OF HIGH PRESSURE OVER THE MARITIMES GIVES
GENERALLY CLEAR SKIES AND LIGHT WINDS INTO WEDNESDAY. A LOW
FORECAST TO BE WEAKENING ALONG THE EAST COAST OF THE UNITED STATES
LOOKS TO SPILL SOME HIGH AND MAYBE MID CLOUD OVER THE SOUTHWESTERN
MARITIMES WEDNESDAY AFTERNOON.
LONG RANGE DISCUSSION FOR 0300Z 18 SEP TO 0300Z 21 SEP.
MODEL DISCUSSION: USED GDPS.
CONFIDENCE: HIGH.
COMMENTS/IMPACTS: THE WEAKENING LOW MOVING UP THE EAST COAST OF THE
U.S. DISSIPATES OVER THE GULF OF MAINE THURSDAY MORNING. HOWEVER
THE ASSOCIATED CLOUD SPREADS INTO THE MARITIMES DURING THE DAY AND
MAY BRING A FEW LIGHT SHOWERS IN THE AFTERNOON. MEANWHILE A COLD
FRONTAL TROUGH DROPS INTO THE NORTHERN MARITIMES AND BRINGS A LIGHT
TO MODERATE SOUTHWEST WIND WELL AHEAD OF IT. THE TROUGH PASSES
THROUGH NOVA SCOTIA ON FRIDAY AND MAY BRING SOME SHOWERS WITH IT
THAT AFTERNOON AS WELL. WINDS SHIFT TO THE NORTHWEST IN ITS WAKE.
SATURDAY SEES A DIMINISHING NORTHERLY FLOW BEHIND THE TROUGH AND A
COOLER DRIER AIRMASS.
END/METOC-HFX
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