FXUS61 KGYX 281506
AFDGYX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
1006 AM EST SAT NOV 28 2009
.SYNOPSIS...
LOW PRESSURE WILL MOVE INTO THE MARITIMES TODAY. WEAK HIGH
PRESSURE WILL BUILD OVER THE AREA SUNDAY. A COLD FRONT WILL
APPROACH THE AREA SUNDAY NIGHT AND MOVE THROUGH MONDAY AFTERNOON.
WEAK HIGH PRESSURE WILL BUILD IN TUESDAY WITH ANOTHER COASTAL
STORM AFFECTING THE NORTHEAST ON THURSDAY.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
ALL WSWS HAVE BEEN DROPPED AS THE SNOW HAS BECOME LIGHTER AND
SHOWERY ACROSS NRN NH AND NW ME...AND THERE HAS BEEN CHANGED TO
RAIN IN SOME OF THE LOWER ELEVATIONS. ALTHOUGH UPSLOPE SHSN WILL
CONTINUE...ANY ADDNL LIGHT ACCUMS WILL BE LIMITED TO HIGHER
TERRAIN. ALSO...WIND ADV STILL LOOKS GOOD...WITH GUSTS TO AROUND
40 KT AT TIMES TODAY. NH EMO REPORTS MINOR WIND ISSUES STATEWIDE.
RADAR TREND CONTINUE TO SHOW A GENERAL DOWNWARD TREND IN PRECIP
ACROSS THE ENTIRE AREA...AND VIS SAT SHOWS SLOW CLEARING TREND
CONTINUING ACROSS SRN THIRD OF NH AND SW ME. SO EXPECT CONTINUED
CLEARING ON THE COASTAL PLAIN THRU THIS AFTERNOON.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH 6 AM SUNDAY/...
SOME LEFTOVER OROGRAPHIC SNOW SHOWERS WILL CONTINUE IN THE MTNS
OTRW PARTLY CLOUDY CONDS EXPECTED XCPT MOSTLY CLEAR IN THE
DOWNSLOPING AREAS. USED A BLEND OF THE MAV/MET TEMPS.
&&
.LONG TERM /SUNDAY THROUGH FRIDAY/...
WEAK RIDGING WILL BUILD INTO THE NORTHEAST ON SUNDAY AHEAD OF A
LONGWAVE TROUGH BEING CARVED OUT ACROSS THE CENTRAL AND EASTERN
UNITED STATES. A SHORTWAVE WILL ROTATE THROUGH THE BASE OF THE
TROUGH ON MONDAY...PUSHING A COLD FRONT THROUGH NEW ENGLAND. SNOW
SHOWERS WILL BEGIN SUNDAY NIGHT IN THE MOUNTAINS AND PRECIPITATION
WILL SPREAD SOUTH MONDAY...WITH MUCH OF THE FORECAST AREA SEEING A
CHANCE FOR A FEW SNOW FLAKES IN THE MORNING HOURS. DURING THE
DAY...THE RAIN/SNOW MIX WILL CHANGE OVER TO RAIN FOR ELEVATIONS
BELOW 1000 FT...THEN WILL CHANGE OVER ONCE AGAIN TO A RAIN/SNOW MIX
MONDAY NIGHT.
ENE WINDS WILL KEEP UPSLOPE SNOW SHOWERS IN THE FORECAST FOR TUESDAY
IN THE HIGHER TERRAIN AS HIGH PRESSURE BUILDS IN FROM THE SW. FOR
THE EXTENDED...THE MODELS ARE IN DISAGREEMENT AS TO WHAT TO DO WITH
THE CYCLONE WHICH DEVELOPS NEAR THE LOUISIANA COAST TUESDAY. THE GFS
BRINGS IT ACROSS THE SOUTHEAST UNITED STATES AND UP THE ATLANTIC
COAST...WHILE THE ECMWF BRINGS IT TOWARDS THE MIDWEST AND UP THE
SAINT LAWRENCE VALLEY. EITHER WAY IT LOOKS LIKE ANOTHER GOOD CHANCE
FOR PRECIPITATION ACROSS NEW ENGLAND. A VERY CHILLY AIRMASS WILL
ARRIVE BEHIND THIS SYSTEM...WITH 850MB TEMPS IN THE THE -8 TO -12
DEGREE C RANGE ON FRIDAY AND SATURDAY.
&&
.AVIATION /15Z SATURDAY THROUGH WEDNESDAY/...
SHORT TERM /THROUGH TONIGHT/...VFR CONDS EXPECTED AT ALL TAF
SITES THIS AFTN THRU TNGT. NOTE THAT RATHER STG GSTY WINDS WILL
PERSIST THRU THE DAY.
LONG TERM...WESTERN TERMINALS WILL DEVELOP MVFR/IFR CONDITIONS LATE
SUNDAY INTO MONDAY WITH REMAINING TERMINALS DEVELOPING SIMILAR
CONDITIONS MONDAY IN RA/SN/BR. CONDITIONS WILL IMPROVE TUESDAY.
&&
.MARINE...
SHORT TERM /SATURDAY AND SATURDAY NIGHT/...GALE FORCE WINDS
EXPECTED OVER THE WATERS THRU THE DAY AND SHOULD DIMINISH TO SCA
CRIT DURING THE EVENING HRS AND THEN CONTINUE THRU THE NIGHT.
LONG TERM...SCA MAY BE NEEDED SUN MORNING BEFORE WINDS DROP BELOW
CRITERIA. GUSTY WINDS MONDAY AHEAD OF AND ALSO BEHIND A COLD FRONT
MAY REQUIRE ANOTHER SCA.
&&
.GYX WATCHES/WARNINGS/ADVISORIES...
ME...WIND ADVISORY UNTIL 7 PM EST THIS EVENING FOR MEZ007>009-
012>014-018>028.
NH...WIND ADVISORY UNTIL 7 PM EST THIS EVENING FOR NHZ001>010-013-
014.
MARINE...GALE WARNING UNTIL 8 PM EST THIS EVENING FOR ANZ150>154.
&&
$$
NEAR TERM...CEMPA
