Area Forecast Discussion
Issued by NWS Portland, ME

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS61 KGYX 242021
AFDGYX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
321 PM EST MON NOV 24 2014

.SYNOPSIS...
A COLD FRONT WILL APPROACH FROM THE WEST TONIGHT. THE FRONT WILL
STALL OVER THE MID ATLANTIC COAST TUESDAY AND TUESDAY NIGHT AS
WEAK HIGH PRESSURE BUILDS OVER NEW ENGLAND. LOW PRESSURE WILL
DEVELOP ON THE FRONT OFF THE MID ATLANTIC COAST ON WEDNESDAY AND
WILL TRACK NORTHEAST TO JUST SOUTH OF CAPE COD BY WEDNESDAY
EVENING. LOW PRESSURE WILL CONTINUE NORTHEAST INTO THE MARITIMES
WEDNESDAY NIGHT. A TROUGH OF LOW PRESSURE WILL LINGER OVER THE
REGION ON THURSDAY. HIGH PRESSURE WILL BUILD IN FROM THE WEST ON
FRIDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
FORECAST AREA IS ENTRENCHED IN THE WARM SECTOR BETWEEN LIFTING
WARM FNT AND APPROACHING COLD FNT. WARM MOIST AIR WILL CONTINUE
LOW CLOUDS AND FOG INTO THE EVENING. COLD FNT CURRENTLY ACROSS WRN
NY WILL APPROACH OVERNIGHT AND EVENTUALLY START TO MIX OUT LOW
LEVEL MOISTURE. THIS MAY TAKE UNTIL CLOSE TO DAWN TO DO SO
HOWEVER. TEMPS OVERNIGHT WILL REMAIN VERY MILD.

&&

.SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/...
COLD FNT WILL MIX DOWN TUE...WITH WINDS BECOMING GUSTY FROM THE W.
EARLY DAY MILD TEMPS WILL GRADUALLY SLIDE BACK INTO THE 40S BY
AFTERNOON. TEMPS WILL CONTINUE DOWN THRU THE NIGHT IN CAA REGIME.

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
12Z MODEL SUITE HAS SHIFTED SLIGHT FURTHER EAST WITH THE SOLUTIONS
ON THE TRACK OF THE UPCOMING NOR`EASTER DURING THE WEDNESDAY/EARLY
THURSDAY TIME PERIOD. THE EURO IS THE FURTHEST WEST...AND
THEREFORE THE WETEST SOLUTION THIS FORECAST PACKAGE. WILL BE
LEANING TOWARDS THE GFS WHICH DEPICTS A TRACK SUFFICIENTLY ENOUGH
TO THE EAST TO KEEP OUR PTYPE MAINLY IN THE FORM OF SNOW. GREATEST
CHANCE FOR A BRIEF PERIOD OF RAIN OVER SOUTHERN AREAS WILL LIKELY
OCCUR WITH THE ONSET OF LIGHT PRECIP WEDNESDAY AFTERNOON. AS THE
PRECIP INTENSITY PICKS UP...VERTICAL MOTION AND WET BULB EFFECTS
WILL CHANGE ANY RAIN QUICKLY BACK OVER TO SNOW IN THIS REGION.

SNOW TOTALS: IT APPEARS SIGNIFICANT ACCUMULATIONS ARE POSSIBLE
ACROSS THE REGION WITH THE HEAVIEST TOTALS LIKELY TO BE OVER
SOUTHERN AREAS...IN CLOSEST PROXIMITY TO THE OFFSHORE SYSTEM.
PLOWABLE SNOWS WILL MAKE FOR TREACHOROUS DRIVING CONDITIONS DURING
ONE OF THE BUSIEST TRAVEL DAYS OF THE YEAR. EXPECT SIGNIFICANT
DELAYS.

AGAIN...PTYPE AT THIS TIME LOOKS TO BE MAINLY ALL SNOW...WITH
BOUNDARY LAYER CONDITIONS POSSIBLY BRINGING THE SNOW OVER TO A
BRIEF PERIOD OF RAIN. NO TEMPS ABOVE 32F IN THE MID LEVELS...SO
SLEET DOES NOT APPEAR TO BE PROBLEMATIC.

SNOW ROLLS OUT OF OUR FORECAST AREA EARLY THURSDAY...KEEPING MUCH
OF THE REGION DRY MUCH OF THE DAY.

OTHERWISE...YET ANOTHER LOW PRESSURE SYSTEM PASSES BY TO OUR NORTH
AND WEST BY THE WEEKEND. THIS WILL ALLOW ANOTHER WARM UP TO OCCUR
IN MAINE AND NEW HAMPSHIRE...WITH ABOVE NORMAL TEMPERATURES.

&&

.AVIATION /20Z MONDAY THROUGH SATURDAY/...
SHORT TERM...LINGERING IFR AND LIFR ALONG THE COAST WILL CONTINUE
INTO THIS EVENING. ARRIVING COLD FNT WILL EVENTUALLY CLEAR OUT TO
MVFR OR VFR CONDITIONS...THOUGH CONFIDENCE IN TIMING IS LOW. IT
MAY TAKE MOST OF THE NIGHT. VFR CONDITIONS EXPECTED TUE AND TUE
NIGHT...WITH GUSTY WLY WINDS.

LONG TERM...CIGS AND VSBYS WILL BE LOWERING TO LIFR IN SNOW LATER
WEDNESDAY AFTERNOON THROUGH VERY EARLY THURSDSAY AS THE COASTAL
SYSTEM PASSES BY TO OUR EAST.

&&

.MARINE...
SHORT TERM...GALE WARNING CONTINUES FOR ALL BUT CASCO BAY WHERE A
SCA IS IN EFFECT. WINDS AND SEAS WILL GRADUALLY DIMINISH THRU TUE.

LONG TERM...COASTAL LOW MAY BRING A PERIOD OF GALE FORCE
WINDS...MAINLY TO THE OUTER WATERS...WEDNESDAY NIGHT DURING ITS
CLOSEST APPROACH TO COASTAL MAINE AND NEW HAMPSHIRE.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...WINTER STORM WATCH FROM WEDNESDAY AFTERNOON THROUGH LATE
     WEDNESDAY NIGHT FOR MEZ007>009-012>014-018>028.
NH...WINTER STORM WATCH FROM WEDNESDAY AFTERNOON THROUGH LATE
     WEDNESDAY NIGHT FOR NHZ001>010-013-014.
MARINE...SMALL CRAFT ADVISORY UNTIL 5 AM EST TUESDAY FOR ANZ153.
     GALE WARNING UNTIL 11 PM EST THIS EVENING FOR ANZ150>152-154.

&&

$$

NEAR TERM...LEGRO
SHORT TERM...LEGRO
LONG TERM...CANNON
AVIATION...CANNON/LEGRO
MARINE...CANNON/LEGRO


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.