FXUS61 KGYX 221933
AFDGYX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
233 PM EST TUE DEC 22 2009

.SYNOPSIS...
A TROUGH OF LOW PRESSURE WILL BACK INTO NORTHERN MAINE
TONIGHT...PRODUCING SNOW FROM BANGOR NORTH. THE SNOW MAY BE HEAVY
AT TIMES. THE AREA OF LOW PRESSURE WILL BE SLOW TO MOVE OFF TO THE
EAST LATE TOMORROW. HIGH PRESSURE WILL BEGIN TO NOSE SOUTHWARD FROM
HUDSONS BAY INTO THE GREAT LAKES REGION ON THURSDAY. THIS WILL
KEEP CONDITIONS RELATIVELY QUIET OVER NORTHERN NEW ENGLAND.
SOUTHERLY FLOW ALOFT WILL SET UP AS WE ENTER THE
WEEKEND...ALLOWING A BIT OF A WARMUP. ALONG WITH THE SOUTHERLY
FLOW WILL BE A FRONTAL SYSTEM THAT MAY BRING SOME PRECIPITATION TO
THE REGION OVER THE WEEKEND AS WELL.

&&

.NEAR TERM /THROUGH TONIGHT/...
MODELS ARE IN GOOD AGREEMENT WITH SHIFTING THE QPF AXIS FURTHER
NORTH OVERNIGHT. WILL KEEP THE CURRENT WINTER STORM WARNING IN
PLACE AS THE VERY NORTHERN EDGE OF IT COULD SEE SOME OF THE
HEAVIER SNOW. AREAS THAT WERE UNDER A WINTER STORM WATCH WILL BE
DROPPED COMPLETELY. THE INVERTED TROUGH THAT SETS UP ON THE BACK
SIDE OF THE LOW PRESSURE SYSTEM EAST OF NOVA SCOTIA WILL REMAIN
THE FOCUS FOR WEATHER OVER THE NEXT 36 HOURS. CONDITIONS SOUTH OF
THE TROUGH AXIS SHOULD SEE SOME INCREASING CLOUDS LATE TONIGHT.
NORTHERLY FLOW WILL BEGIN TO TURN MORE NORTHWESTERLY LATE TONIGHT.
THIS WILL HELP SET UP SOME UPSLOPE SNOW OVER THE MOUNTAINS.

&&

.SHORT TERM /WEDNESDAY/...
REALLY NOT MUCH IN THE WAY OF ANY PROGRESSION OF SYNOPTIC FEATURES
FOR WEDNESDAY. THE INVERTED TROUGH WILL REMAIN IN PLACE ACROSS
NORTHERN MAINE. NORTHWESTERLY FLOW OVER THE MOUNTAINS WILL KEEP
UPSLOPE SNOW IN THE FORECAST.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/...
MODELS ARE IN AGREEMENT THROUGH THE PERIOD. 5H LOW MOVE SE ON OFF
THE MAINE COAST WED NIGHT. THIS ALLOWS THE BAND OF SNOW THAT WILL
BE FORMING OVER EASTERN AND CENTRAL MAINE TO MOVE SOUTH AND OFF
THE COAST.

HIGH PRES NOSES IN FROM CANADA FOR THUR AFTERNOON AND CHRISTMAS DAY. 
A COMPLICATED MESS ARRIVES SAT AS AN OCCLUDED FRONT APPROACHES THE 
REGION. PRECIPITATION SHOULD BREAK OUT IN SW NH SAT MORN. MODELS 
SHOWING NE PROGRESSION WILL BE SLOW AS 1040 HIGH WILL BE SLOW TO 
GIVE GROUND. INITIALLY IT SHOULD BE COLD ENOUGH FOR SNOW EVERYWHERE 
BUT EXPECT COASTAL LOCATIONS TO TURN FAIRLY QUICKLY TO RAIN SAT. IN 
THE INTERIOR EXPECT A CHANGE TO MIXED PRECIPITATION WITH SNOW IN THE 
MTNS. THERE COULD BE A PERIOD OF FREEZING RAIN IN THE INTERIOR 
ESPECIALLY THE VALLEY LOCATIONS SO SOME ICE ACCUMULATION IS PSBL. 
SYSTEM MOVES OUT SUN. MON AND TUES EXPECT SNOW SHOWERS WITH UPPER 
LVL LOW MOVING OVERHEAD.
&&

.AVIATION /20Z TUESDAY THROUGH SUNDAY/...
SHORT TERM...EXPECT VFR CONDITIONS AT ALL LOCATIONS TO REMAIN IN
PLACE THROUGH TOMORROW. HEAVY SNOW BAND WILL REMAIN NORTH OF
AUGUSTA.  

LONG TERM...EXPECT VFR CONDITIONS WED NIGHT THRU SAT MORN. 
MVFR MOVES IN SAT WITH IFR SAT NGT AND SUN MORN.

&&

.MARINE...
SHORT TERM...PRESSURE GRADIENT BEGINNING TO SLACKEN A BIT AND
WINDS ARE BEGINNING TO DIE OFF. WILL DROP THE SCA WITH THIS
PACKAGE. OTHERWISE...SHOULD BE QUIET ON THE WATERS. 

LONG TERM...SCA PSBL WED NGT AND THU AM AS TROUGH MOVES OFFSHORE.
THUR AFTN THRU SAT AM WINDS BLO SCA CRITERIA. SAT AFTN AHEAD OF
FRONT WINDS INCREASE FROM E AND SE MAY REACH SCA CRITERIA. &&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...WINTER STORM WARNING UNTIL 7 PM EST WEDNESDAY FOR MEZ009.
NH...NONE.
MARINE...NONE.

&&

$$
SYNOPSIS...POHL
NEAR TERM...POHL
SHORT TERM...POHL
LONG TERM...HAWLEY
AVIATION...HAWLEY/POHL
MARINE...HAWLEY/POHL