676
FXUS61 KGYX 090720
AFDGYX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
220 AM EST TUE FEB 9 2010
SYNOPSIS
LOW PRESSURE WILL DEVELOP OVER THE CAROLINAS TODAY AND MOVE
NORTHEAST OVERNIGHT. LOW PRESSURE WILL PASS OUT TO SEA SOUTH OF
CAPE COD ON WEDNESDAY AND WEDNESDAY NIGHT. A BRISK NORTHWEST FLOW
WILL PREVAIL OVER THE REGION IN THE WAKE OF THIS SYSTEM THURSDAY
AND FRIDAY. LOW PRESSURE WILL DRIFT WESTWARD FROM THE MARITIMES
INTO EASTERN QUEBEC SATURDAY THROUGH SUNDAY AND WILL MEANDER OVER
EASTERN CANADA THROUGH TUESDAY.
NEAR TERM /THROUGH TODAY/
A FEW LIGHT RADAR RETURNS STILL SHOWING UP NEAR SKOWHEGAN AND BAR
HARBOR...HOWEVER THE SNOW IS FALLING FROM MID LEVEL CLOUDS THROUGH
THE DRIER LOW LEVELS...AND IS HAVING A HARD TIME REACHING THE
GROUND BEFORE EVAPORATING. SNOW CHANCES WILL DECREASE TO NIL LATER
THIS MORNING AS AN UPPER RIDGE OF HIGH PRESSURE BUILDS OVER THE
REGION FROM THE SW. EXPECT PARTLY CLOUDY SKIES OVER SOUTHERN AND
CENTRAL AREAS BY NOON...HOWEVER NORTHERN SECTIONS WILL SEE MOSTLY
CLOUDY SKIES THROUGH MOST OF THE DAY THANKS TO CONTINUED WEAK
UPSLOPE FLOW AT THE SURFACE. THE TRANSITION OF WEATHER SYSTEMS
WILL ALLOW THE SURFACE PRESSURE GRADIENT TO WEAKEN AS WELL...AND
NW WINDS SHOULD BE 5-10 MPH MOST LOCATIONS. THE PARTLY CLOUDY
SKIES WILL ALLOW TEMPERATURES TO REACH THE MID 30S SOUTH AND
CENTRAL SECTIONS TODAY...WITH UPPER 20S/LOWER 30S TO THE NORTH.
SHORT TERM /TONIGHT/
HIGH PRESSURE WILL CREST OVER NEW ENGLAND TONIGHT. MOSTLY CLOUDY
SKIES WILL BEGIN TO CREEP IN AGAIN FROM THE SW AS THE NEXT LOW
PRESSURE SYSTEM APPROACHES. LIGHT WINDS AND PARTLY CLOUDY
SKIES...AT LEAST FOR THE FIRST HALF OF THE NIGHT...WILL HELP LOWS
DROP INTO THE UPPER SINGLE DIGITS/LOWER TEENS NORTH TO UPPER TEENS/
LOWER 20S SOUTH.
LONG TERM /WEDNESDAY THROUGH MONDAY/
LOW PRESSURE OFF THE DELAWARE COAST WILL TAKE A TURN TO THE EAST
ON WEDNESDAY BUT SHOULD REACH FAR ENOUGH NORTH TO DEPOSIT SOME
LIGHT SNOW IN SOUTHERN NEW HAMPSHIRE AND SOUTHWEST MAINE DURING THE
DAYLIGHT HOURS. AT THIS POINT APPEARS HIGHEST AMOUNTS WOULD BE
IN EXTREME SOUTHEAST NEW HAMPSHIRE WHERE 1 TO 3 INCHES OF WET SNOW
COULD ACCUMULATE THROUGH EARLY EVENING. SHOULD BE A SHARP CUTOFF
TO THE NORTH WITH CENTRAL AND NORTH PORTIONS OF NEW HAMPSHIRE AND
WESTERN MAINE ONLY SEEING CLOUDS WITH JUST A CHANCE OF A BRIEF
FLURRY.
EXPECT PRECIPITATION TO WIND DOWN WEDNESDAY EVENING WITH SOME
ADDITIONAL MINOR ACCUMULATIONS IN FAR SOUTHERN ZONES. DOWNSLOPE
WINDS SHOULD RESULT IN PARTIAL CLEARING AFTER MIDNIGHT DOWNWIND OF
THE MOUNTAINS. INCREASING UPSLOPE FLOW AND LINGERING MOISTURE IN
THE MOUNTAINS WILL KEEP THE CHANCE OF SNOW SHOWERS GOING IN THE
NORTH.
PRETTY UNEVENTFUL PATTERN FOR THE REMAINDER OF THE WEEK AND INTO
THE WEEKEND AS DEPARTING LOW BECOMES TRAPPED UNDER CLOSED UPPER
LEVEL SYSTEM AND SLOWLY RETRO-GRADES BACK TO THE WEST.
MINOR DISTURBANCES ROTATING AROUND THE UPPER LOW WILL KEEP
VARIABLE CLOUDS IN THE FORECAST IN THE SOUTH WITH MORE IN THE WAY
OF CLOUDS AND A CHANCE OF SNOW SHOWERS IN THE
MOUNTAINS...ESPECIALLY LATER IN THE WEEKEND AS LOW PRESSURE BACKS
INTO EASTERN CANADA.
NEXT SHORTWAVE APPROACHES FROM THE GREAT LAKES ON SUNDAY WITH
MOST OF IT'S ENERGY ONCE AGAIN PASSING SOUTH OF THE FORECAST AREA
THROUGH THE MID ATLANTIC. SYSTEM MAY BRUSH THE COAST WITH A LITTLE
LIGHT SNOW LATE ON MONDAY BUT FOR THE MOST PART LOOKS LIKE ANOTHER
MISS FOR NORTHERN NEW ENGLAND.
WINDY AND COLD WEATHER CONTINUES FOR TUESDAY AS THE LOW LIFTS OFF
TO THE NORTHEAST.
AVIATION /07Z TUESDAY THROUGH SATURDAY/
SHORT TERM...VFR ALL SITES TODAY WITH POSSIBLE MVFR CIGS THIS
MORNING AT LEB. WILL SEE AN INCREASE IN MID AND HIGH CLOUDS AFTER
00Z WED AS THE NEXT LOW PRESSURE SYSTEM APPROACHES. WINDS WILL
BE LIGHT AND VARIABLE AS HIGH PRESSURE MOVES OVER THE AREA.
LONG TERM...MVFR/IFR CEILINGS AND VSBY DEVELOP IN SOUTHERN AREAS
FOR WEDNESDAY....IMPROVING WEDNESDAY NIGHT. GENERALLY VFR THURSDAY
THROUGH SATURDAY.
MARINE
SHORT TERM...SCA WILL BE ALLOWED TO EXPIRE LATER THIS MORNING AS
PRESSURE GRADIENT WEAKENS AND WINDS DECREASE. WINDS AND SEAS WILL
BE CALM FOR THE REMAINDER OF THE DAY AS HIGH PRESSURE CRESTS OVER
THE REGION.
LONG TERM...GALE WARNING ISSUED FOR WEDNESDAY INTO THURSDAY.
GYX WATCHES/WARNINGS/ADVISORIES
ME...NONE.
NH...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 7 AM EST THIS MORNING FOR
ANZ150>154.
GALE WARNING FROM 1 PM WEDNESDAY TO 1 PM EST THURSDAY FOR
ANZ150-152-154.
HANES/SINSABAUGH
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