793
FXCN01 CWHF 150812
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
MONDAY 15 SEP
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KEY FORECAST POINTS:
- PATCHY LOW STRATUS IS FORECAST TO LIFT AND BREAK UP TODAY LEADING
TO MAINLY SUNNY SKIES.
- LIGHT WINDS AND GENERALLY CLEAR SKIES ARE FORECAST TONIGHT THROUGH
TUESDAY.
===================================================================
SHORT RANGE DISCUSSION FOR 0600Z 15 SEP TO 0300Z 17 SEP.
MODEL DISCUSSION: USED RDPS.
CONFIDENCE: HIGH.
COMMENTS/IMPACTS: A LIGHT TO MODERATE NORTHERLY FLOW IN THE WAKE OF
A WEAK PASSING COLD FRONT LAST EVENING WILL DIMINISH TO LIGHT THIS
AFTERNOON AS A RIDGE OF HIGH PRESSURE BUILDS OVER THE MARITIMES.
PATCHY SC IN THE NORTHERLY FLOW WILL LINGER OVER EASTERN PORTIONS
OF NOVA SCOTIA GIVING A MIX OF SUN AND CLOUD. HOWEVER SKIES ARE
FORECAST TO CLEAR LATE THIS AFTERNOON OR EARLY THIS EVENING WITH
THE BUILDING RIDGE. LIGHT WINDS AND CLEAR SKIES ARE THEN FORECAST
THROUGH TUESDAY INTO WEDNESDAY AS THE RIDGE LINGERS OVER THE
REGION.
LONG RANGE DISCUSSION FOR 0300Z 17 SEP TO 0300Z 20 SEP.
MODEL DISCUSSION: USED GDPS.
CONFIDENCE: HIGH.
COMMENTS/IMPACTS: THE RIDGE MOVES SOUTH OF NOVA SCOTIA BUT LINGERS
SOUTH OF THE PROVINCE ON WEDNESDAY. LIGHT WINDS BECOME LIGHT TO
MODERATE SOUTHWEST IN THE AFTERNOON. SUNNY SKIES CONTINUE FOR MUCH
OF THE DAY HOWEVER A LOW FORECAST TO LIE OFF THE EAST COAST OF THE
UNITED STATES MAY SPILL SOME HIGH CLOUD OVER THE REGION LATE IN THE
AFTERNOON.
THE RIDGE BREAKS DOWN AND LOW OFF THE U.S. COAST WEAKENS AS IT
MOVES NORTHWARD OVER THE GULF OF MAINE. CLOUD MOVES INTO THE REGION
AND THE GDPS HAS SOME SPOTTY SHOWERS ASSOCIATED ALTHOUGH THE GFS
LESS SO.
ON FRIDAY A COLD FRONTAL TROUGH IS FORECAST TO DROP THROUGH NOVA
SCOTIA AND WINDS SHIFT FROM SOUTHWEST TO NORTHWEST ACROSS IT. CLOUD
AND SOME SPOTTY SHOWERS ARE FORECAST.
END/METOC-HFX
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