Area Forecast Discussion
Issued by NWS Portland, ME

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FXUS61 KGYX 020300 AAA
AFDGYX

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE GRAY ME
1100 PM EDT WED JUL 1 2015

.SYNOPSIS...
A COLD FRONT WILL CROSS THE REGION EARLY TONIGHT. THIS SYSTEM
WILL BRING SHOWERS AND THUNDERSTORMS TO THE REGION THROUGH THIS
EVENING...BEFORE HIGH PRESSURE BUILDS IN ON THURSDAY. HIGH
PRESSURE WILL THEN REMAIN IN PLACE THROUGH EARLY NEXT WEEK. LOW
PRESSURE ALONG THE NEW ENGLAND COASTLINE MAY BRING SHOWERS TO THE
REGION LATE IN THE WEEK.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
UPDATE...A FEW MINOR CHANGES TO ACCOUNT FOR LATEST OBSERVATIONAL
TRENDS. SHOWERS NOW CONFINED TO THE MTNS...AND WILL DRIFT ACROSS
NRN ZONES THRU THE NEXT SEVERAL HOURS. WILL HAVE TO WATCH FOR
PATCHY VALLEY FOG GIVEN RECENT RAINS AND COOLING TEMPS OVERNIGHT.

PREVIOUS DISCUSSION...SOUTHERN NEW HAMPSHIRE BEGINNING TO SEE A
LITTLE BIT OF HEATING THIS AFTERNOON. ONCE TEMPERATURES CLIMB INTO
THE MID 70S...CONVECTION SHOULD GET GOING. ALREADY SEEING SOME
CONVECTION FIRING OVER SOUTHERN VERMONT AND EASTERN NEW YORK. THE
REST OF THE FORECAST AREA PROBABLY WILL NOT SEE ENOUGH HEATING FOR
MUCH IN THE WAY OF CONVECTION. LOW CLOUDS AND RAIN WILL HANG
AROUND UNTIL THE COLD FRONT SWINGS THROUGH LATER TONIGHT. EXPECT
PATCHY FOG TO DEVELOP AS SKIES BEGIN TO CLEAR AND RADIATIONAL
COOLING GETS GOING.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/...
HIGH PRESSURE BUILDS OVER THE REGION WITH SUNNY SKIES TOMORROW AND
CLEAR SKIES TOMORROW NIGHT.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
A WEAK TROUGH OF LOW PRESSURE WILL CROSS THE REGION LATE IN THE
WEEKEND. THIS WILL BRING ONLY A SLIGHT CHANCE FOR SHOWERS TO THE
AREA AS THE WEAK SURFACE FRONT WILL BE RELATIVELY MOISTURE
STARVED.

HIGH PRESSURE WITH MODERATING TEMPERATURES WILL BE THE FOCUS FOR
EARLY NEXT WEEK. MAINLY DRY CONDITIONS WILL ACCOMPANY THE 850 MB
TEMPERATURES WILL FINALLY BE ON THE RISE WITHIN A WEAK DEVELOPING
SOUTHWESTERLY FLOW.

12Z MODEL SUITE IN GOOD AGREEMENT WITH A SURFACE LOW DEVELOPING
SOUTH OF NEW ENGLAND LATE IN THE WEEK. HOWEVER...THE PASSAGE AND
EXACT TRACK OF THAT SYSTEM WILL PLAY A SIGNIFICANT ROLE AS TO
WHETHER A STEADY RAIN WILL FALL OVER SOUTHERN AREAS...OR SCATTERED
SHOWER ACTIVITY.

&&

.AVIATION /03Z THURSDAY THROUGH MONDAY/...
SHORT TERM...IFR/LIFR CONDITIONS WILL BE SLOW TO IMPROVE. EVEN
THOUGH CIGS WILL LIKELY BEGIN TO INCREASE LATER THIS
EVENING...RADIATIONAL COOLING WILL FORM FOG THAT WILL KEEP VSBYS
AT IFR/LIFR AT MOST LOCATIONS THROUGH MORNING. VFR CONDITIONS ARE
EXPECTED TOMORROW AND TOMORROW NIGHT.

LONG TERM...HIGH PRESSURE WILL KEEP VFR CONDITIONS ACROSS THE AREA
THROUGH EARLY THIS WEEKEND. NIGHTTIME FOG IS POSSIBLE EACH NIGHT
AT LEBANON AND WHITEFIELD. IFR CONDITIONS ARE POSSIBLE ON SUNDAY
AND AGAIN ON WEDNESDAY.

&&

.MARINE...
SHORT TERM...NO FLAGS EXPECTED.

LONG TERM...WEAK PRESSURE GRADIENTS LEAD TO LIGHT WINDS AND LOW
WAVE HEIGHTS THROUGH MUCH OF NEXT WEEK.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...NONE.
NH...NONE.
MARINE...NONE.

&&

$$

NEAR TERM...LEGRO


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