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Area Forecast Discussion
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000
FXUS61 KBTV 271728
AFDBTV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BURLINGTON VT
1228 PM 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 1225 PM EST THURSDAY...UPDATED FCST TO LOWER TEMPS SEVERAL
DEGREES. THE COMBINATION OF FRESH SNOW AND LIMITED SUNSHINE HAS
RESULTED IN TEMPS STRUGGLING IN THE 20S WITH A FEW READINGS NEAR
30F THIS AFTN. THINKING ANOTHER DEGREE OR TWO TO CRNT OBS WL WORK
FOR THE HIGH TEMPS TODAY. OTHERWISE...HAVE REVIEWED THE LATEST 12Z
DATA AND WL BE INCREASING POPS TONIGHT WITH A LIGHT SNOW EVENT
LIKELY FOR PORTIONS OF THE CWA. SEVERAL SYNOPTIC AND MESOSCALE
FEATURES COMING TOGETHER TO PRODUCE A DUSTING TO SEVERAL INCHES OF
SNOW ACRS THE REGION...ESPECIALLY DACKS/GREEN MTNS AND THE
EASTERN CPV. 

&&

.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 /18Z THURSDAY THROUGH TUESDAY/...
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...TABER
SHORT TERM...RJS
LONG TERM...LAHIFF
AVIATION...LAHIFF



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