Area Forecast Discussion
Issued by NWS Burlington, VT

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FXUS61 KBTV 271429
AFDBTV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BURLINGTON VT
929 AM EST THU NOV 27 2014

.SYNOPSIS...
ANY LIGHT SNOW WILL COME TO AN END THIS MORNING AS LOW PRESSURE
MAKES ITS WAY UP INTO THE CANADIAN MARITIMES. AN UPPER AIR
DISTURBANCE WILL BRING A RETURN OF SOME SNOW SHOWERS TO THE NORTH
COUNTRY TONIGHT INTO FRIDAY MORNING. SEASONABLY COLD AND MAINLY
DRY CONDITIONS WILL THEN PREVAIL FRIDAY AFTERNOON THROUGH
SATURDAY...WITH JUST THE CHANCE FOR A FEW LIGHT SNOW SHOWERS.
BREEZY AND MILD CONDITIONS RETURN FOR SUNDAY WITH HIGHS REBOUNDING
INTO THE MID TO UPPER 40S.

&&

.NEAR TERM /UNTIL 7 PM THIS EVENING/...
AS OF 919 AM EST THURSDAY...MINOR UPDATE TO POPS AND TEMPS BASED
ON CRNT CONDITIONS AND LATEST RADAR. HAVE INCREASED POPS ALONG THE
WESTERN SLOPES...CPV AND HIGHER TRRN OF NORTH-CENTRAL VT MTNS. THE
COMBINATION OF LEFTOVER BL TO 850MB RH...WEAK LLVL CAA...AND
UPSLOPE FLW WL RESULT IN SCATTERED SNOW SHOWERS ACRS THE HIGHER
TRRN THRU 18Z TODAY. NOT EXPECTING MUCH ACCUMULATION...AS DEPTH OF
MOISTURE IS LIMITED. OTHERWISE...WITH PROGGED 85H TEMPS BTWN -10C
AND -12C MOVING OVER THE RELATIVELY WARMER WATERS OF LAKE
CHAMPLAIN...HAVE NOTED A FEW FLURRIES DEVELOPING PER LATEST RADAR
TRENDS. THEREFORE HAVE MENTION CHC POPS ACRS THE CENTRAL/SOUTHERN
CPV THRU 16Z TODAY. NOT EXPECTING MUCH ACCUMULATION. HAVE SWITCHED
THE CXX RADAR INTO VCP 31 TO DETECT THE LIGHT PRECIP BETTER. REST
OF FCST IN GREAT SHAPE WITH CLOUDY SKIES AND TEMPS WARMING INTO
THE 20S TO NEAR 30F BY THIS AFTN.

PREVIOUS DISCUSSION...
WITH LATEST FORECAST PACKAGE HAVE DROPPED WARNINGS/ADVISORIES
THAT WERE IN EFFECT FOR NORTHERN NEW YORK AS WELL AS RUTLAND AND
WINDSOR COUNTIES IN VERMONT. THE THREAT FOR ANY ADDITIONAL SNOW
ACCUMULATIONS IN THESE AREAS IS JUST ABOUT OVER. RADAR AND SURFACE
OBS INDICATE SNOW WINDING DOWN ACROSS THE REST OF THE AREA AS WELL
WITH VISIBILITIES IMPROVING. ANY ADDITIONAL ACCUMULATIONS WILL BE
LIMITED TO A DUSTING TO NO MORE THAN 2 INCHES...AND EXPECT TO DROP
REST OF HEADLINES WITH NEXT UPDATE. SNOW TOTALS RATHER IMPRESSIVE
ACROSS MUCH OF VERMONT AND SOUTHEASTERN ESSEX COUNTY NEW
YORK...WITH AMOUNTS RANGING FROM 6 TO 14 INCHES. SHARP GRADIENT
ACROSS FAR NORTHWEST VERMONT AND NORTHEAST NEW YORK...WITH AMOUNTS
TAPERING DOWN TO ONLY A COUPLE OF INCHES IN THE WESTERN
ADIRONDACKS AND HARDLY ANYTHING IN THE SAINT LAWRENCE VALLEY.

ONCE THE LIGHT SNOW TAPERS OFF THIS MORNING...IT APPEARS AS IF
THE REST OF THIS THANKSGIVING DAY WILL FEATURE CLOUDY SKIES AND
MAINLY DRY CONDITIONS. MODEL SOUNDINGS INDICATE PLENTY OF LOW
LEVEL MOISTURE BUT LITTLE MECHANISM TO PRODUCE PRECIPITATION THIS
AFTERNOON. TEMPS WILL BE ON THE CHILLY SIDE WITH HIGHS IN THE
UPPER 20S TO MID 30S.

&&

.SHORT TERM /7 PM THIS EVENING THROUGH SATURDAY/...
AS OF 412 AM EST THURSDAY...SKIES REMAIN CLOUDY TONIGHT THROUGH
FRIDAY MORNING WITH UPPER LEVEL TROUGH REMAINING OVER THE REGION.
SHORTWAVE MOVING THROUGH THE MEAN TROUGH WILL BRING SOME SNOW
SHOWERS OR PERHAPS A PERIOD OF LIGHT SNOW TO THE REGION OVERNIGHT
INTO FRIDAY MORNING. SOME MINOR ACCUMULATIONS POSSIBLE...GENERALLY
A DUSTING TO AS MUCH AS 2 INCHES. CLOUDS WILL PREVENT TEMPS FROM
DROPPING OFF ALL THAT MUCH TONIGHT. EXPECT LOWS IN THE MID TEENS
TO LOWER 20S.

TROUGH DEPARTS FRIDAY AFTERNOON AND UPPER FLOW BECOMES MORE ZONAL.
THIS WILL ALLOW FOR SOME CLEARING FRIDAY AFTERNOON/EVENING WITH
SURFACE RIDGE SLIDING ACROSS THE AREA. RIDGE AXIS MOVES EAST OF
THE AREA SATURDAY ALLOWING FOR RETURN SOUTHERLY FLOW TO DEVELOP.
THIS COUPLED WITH WEAK DISTURBANCE IN FLOW ALOFT WILL RESULT IN
CLOUDS AND PERHAPS A FEW LIGHT SNOW SHOWERS. MAX TEMPS FRIDAY AND
SATURDAY WILL REMAIN BELOW SEASONAL NORMS...WITH HIGHS FRIDAY IN
THE MID 20S TO LOWER 30S...AND LOWER TO MID 30S ON SATURDAY. ANY
CLEARING FRIDAY NIGHT WILL ALLOW TEMPS TO FALL INTO TEENS...WITH
SOME LOWER READINGS POSSIBLE GIVEN SNOW COVER.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
AS OF 336 AM EST THURSDAY...STILL LOOKING RATHER QUIET FOR THE
EXTENDED PERIOD WITH A FEW WEAK SYSTEMS MOVING THROUGH FAST
WEST/SOUTHWEST FLOW ALOFT. HIGH PRESSURE OVER THE EASTERN SEABOARD
SHIFTS OFFSHORE SATURDAY NIGHT WHILE LOW PRESSURE OVER THE GREAT
LAKES TRACKS NORTHEAST TO THE TIP OF JAMES BAY BY 12Z SUNDAY.
STRONG SOUTH/SOUTHWESTERLY FLOW BETWEEN THESE SYSTEMS WILL PUSH A
THERMALLY STRONG BUT MOISTURE LACKING WARM FRONT THROUGH THE NORTH
COUNTRY LATE SATURDAY NIGHT INTO EARLY SUNDAY WITH LITTLE TO NO
QPF EXPECTED. BTV CWA BECOMES FIRMLY ENTRENCHED IN THE WARM SECTOR
SUNDAY WITH A MODEST 925-850MB JET OF 35-45KTS MOVING OVERHEAD
USHERING IN SURFACE TEMPS WELL ABOVE NORMAL RANGING THROUGH THE
40S. AS THE SURFACE LOW TRACKS FURTHER NORTHEAST THROUGH QUEBEC
AND INTO NEWFOUNDLAND/LABRADOR A SURFACE COLD FRONT WILL SWEEP
THROUGH THE REGION SUNDAY NIGHT INTO MONDAY. STILL SEEING SOME
TIMING DIFFERENCES BETWEEN THE GFS AND ECMWF IN REGARDS TO
FROPA...BUT IT`S REALLY OF LITTLE CONSEQUENCE BECAUSE THE
AVAILABLE MOISTURE ALONG THE BOUNDARY IS FAIRLY NARROW SO ONCE
AGAIN NOT EXPECTING MUCH MORE THAN A FEW SCATTERED RAIN OR SNOW
SHOWERS.

BEHIND THE FRONT...LOW LEVEL CAA DEVELOPS ON MONDAY AS STRONG
HIGH PRESSURE BUILDS EASTWARD FROM THE NORTHERN GREAT PLAINS INTO
THE GREAT LAKES. THE HIGH TRACKS FURTHER EAST OVER THE NORTHEAST
TUESDAY BEFORE SHIFTING OFFSHORE TUESDAY NIGHT OFFERING A COLD BUT
DRY STRETCH OF WEATHER TO START THE WORK WEEK. TEMPS DROP BACK
BELOW SEASONAL NORMALS TEMPS FALLING THROUGH THE DAY MONDAY INTO
THE 30S AND ONLY PEAKING IN THE 20S ON TUESDAY. LOOKING FURTHER
OUT IN THE FORECAST...HIGH PRESSURE EXITS OFFSHORE TUESDAY NIGHT
WITH AN UPPER TROUGH AND ANOTHER WEAK COLD FRONT RENEWING CHANCES
FOR RAIN/SNOW SHOWERS WEDNESDAY INTO WEDNESDAY NIGHT WITH TEMPS
WARMING ONCE AGAIN INTO THE 40S ON STRONG SOUTH/SOUTHWEST FLOW
ALOFT.

&&

.AVIATION /14Z THURSDAY THROUGH MONDAY/...
THROUGH 12Z FRIDAY...SNOW HAS TAPERED OFF WITH JUST SOME VCSH
LOCALLY IN THE CHAMPLAIN VALLEY FOR THE NEXT FEW HOURS THOUGH
WON`T AFFECT VSBY MUCH. SO FOR THE REST OF TODAY...LOOKING AT A
MIX OF VFR AND MVFR CIGS POSSIBLY BREAKING UP A BIT AT TIMES BUT
LARGELY REMAINING OVC. AFTER 00Z...UPPER DISTURBANCE MOVING
THROUGH THE FLOW ALOFT WILL RENEW CHANCES FOR SOME SCATTERED SNOW
SHOWERS...THOUGH AT THIS TIME CONFIDENCE IS LOW ON AVIATION
IMPACTS AT ALL TERMINALS EXCEPT KSLK WHERE THINK A PERIOD OF IFR
VSBY IS LIKELY FROM 03-09Z. OTHERWISE...MVFR CIGS WILL PERSIST
ALONG WITH A LIGHT TO MODERATE NORTH-NORTHEAST WIND.

OUTLOOK 12Z FRIDAY THROUGH MONDAY...

12Z FRIDAY - 00Z SUNDAY...MVFR TRENDS TO VFR BY 18Z FRI AS HIGH
PRESSURE BUILDS INTO THE REGION AND DOMINATES THROUGH SATURDAY.

00Z SUNDAY - 00Z TUESDAY...GENERALLY VFR WITH SCATTERED MVFR SNOW
SHOWERS POSSIBLE SUNDAY...MORE LIKELY SUNDAY NIGHT INTO MONDAY
MORNING ALONG A COLD FRONT PASSAGE.

&&

.BTV WATCHES/WARNINGS/ADVISORIES...
VT...NONE.
NY...NONE.

&&

$$
SYNOPSIS...RJS
NEAR TERM...RJS/TABER
SHORT TERM...RJS
LONG TERM...LAHIFF
AVIATION...LAHIFF



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