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Area Forecast Discussion
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000
FXUS61 KALY 311116
AFDALY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ALBANY NY
616 AM EST SAT JAN 31 2015

.SYNOPSIS...
A BITTERLY COLD ARCTIC AIR MASS WILL BUILD INTO THE REGION WITH
STRONG GUSTY WINDS WHICH WILL PRODUCE DANGEROUSLY COLD WIND CHILLS
TODAY. HIGH PRESSURE WILL BE BRIEFLY IN CONTROL OF OUR WEATHER TO
START THE WEEKEND...THEN A CLIPPER LOW SATURDAY NIGHT INTO SUNDAY
WILL BRING SCATTERED SNOW SHOWERS NORTH AND WEST OF THE CAPITAL
DISTRICT. ANOTHER ROUND OF SNOW IS EXPECTED SUNDAY NIGHT THROUGH
MONDAY.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
...A WIND CHILL WARNING IS IN EFFECT UNTIL 11 AM THIS MORNING FOR
NORTHERN HERKIMER AND HAMILTON COUNTIES OF THE SOUTHERN
ADIRONDACKS...

...A WIND CHILL ADVISORY IS UP FOR THE REST OF THE FCST AREA
EXCLUDING PORTIONS OF THE SOUTHERN ADIRONDACKS UNTIL 11 AM
THIS MORNING...

AS OF 6 AM EST TEMPERATURES ACROSS THE REGION RANGED FROM 10 TO 15
BELOW ZERO ACROSS THE NORTHWEST PORTION OF THE FA TO AROUND 10 DEGREES
ABOVE ZERO OVER THE SOUTHEAST PORTION OF THE FA. FOR TODAY...DANGEROUS
WIND CHILL VALUES WILL CONTINUE FOR MOST OF THE MORNING...AND THE
HEADLINES RUN TO 11 AM. A RIDGE OF HIGH PRESSURE WILL NOSE INTO
OUR REGION FROM THE TENNESSEE VALLEY BY THIS AFTERNOON. MOSTLY
SUNNY TO SUNNY SKIES AND VERY COLD CONDITIONS WILL OCCUR DURING
THE DAY. MAX TEMPS WILL BE 15 TO 20 DEGREES BELOW NORMAL.
OVERALL...DOWNRIGHT FRIGID CONDITIONS WITH HIGHS ZERO TO 10 ABOVE
OVER THE SRN DACKS...SRN GREENS...AND PARTS OF THE BERKSHIRES.
TEENS WILL BE COMMON OVER THE REST OF THE FCST AREA. THE WINDS
SHOULD SLACKEN LATE IN THE DAY.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH MONDAY/...
A WINTER STORM WATCH IS IN EFFECT FROM LATE SUNDAY EVENING
THROUGH MONDAY FOR MUCH OF EASTERN NEW YORK AND WESTERN NEW
ENGLAND EXCLUDING THE SOUTHERN ADIRONDACKS...

FOR TONIGHT...A FAST MOVING MOISTURE STARVED CLIPPER TYPE SYSTEM
IS EXPECTED TO RACE FROM THE UPPER GREAT LAKES ACROSS NORTHERN NEW
YORK OVERNIGHT. THIS SYSTEM WILL BRING A CHANCE OF SNOW SHOWERS TO
THE NORTHWESTERN THIRD OF THE FA WITH LITTLE IF ANY SNOW ELSEWHERE.
IT WILL CONTINUE TO BE VERY COLD WITH LOWS RANGING FROM 5 BELOW
ZERO NORTHWEST TO THE 10 ABOVE ZERO SOUTHEAST.

ON SUNDAY HIGH PRESSURE WILL STRETCH ACROSS SOUTHERN CANADA AND IN
THE WAKE OF THE CLIPPER TYPE SYSTEM WE ARE EXPECTING A DRY DAY.
ALTHOUGH CLOUDS WILL BE INCREASING AHEAD OF OUR NEXT SYSTEM SO
SKIES WILL BE MOSTLY CLOUDY. TEMPERATURES WILL BE HIGHER THAN
SATURDAY...BUT STILL WELL BELOW NORMAL WITH READINGS FROM THE
LOWER TEENS NORTHWEST TO UPPER 20S SOUTHEAST.

ON SUNDAY NIGHT WE ARE EXPECTING SNOW TO OVERSPREAD MUCH OF THE FA
FROM SOUTHWEST TO NORTHEAST DURING THE LATE EVENING HOURS AND A
WINTER STORM WATCH HAS BEEN POSTED FOR MUCH OF THE FA EXCLUDING
THE SOUTHERN ADIRONDACKS. WE WILL BE DEALING WITH A PROGRESSIVE
TYPE SYSTEM AS THE UPPER TROUGH AXIS REMAINS NEUTRAL POSITIVELY
TILTED UNTIL THE SYSTEM IS WELL OFF THE COAST. THE SURFACE LOW IS
EXPECTED TO TRACK FROM THE OHIO VALLEY LATE SUNDAY ACROSS THE
MIDDLE ATLANTIC REGION SUNDAY NIGHT AND PASS SOUTHEAST OF LONG
ISLAND ON MONDAY. THIS SYSTEM WILL PRODUCE GOOD OVERRUNNING AS
THERE IS PLENTY OF ISENTROPIC LIFT AND DECENT FRONTOGENESIS AT H7
BTWN 12Z AND 18Z ON MONDAY. IN THE WATCH AREA 7 INCHES OR MORE OF
SNOW IS POSSIBLE...HOWEVER AS WITH SO MANY STORMS THIS WINTER
THERE WILL BE A SHARP CUTOFF ON THE NORTHERN EDGE...THUS THE
REASON THAT THE SOUTHERN ADIRONDACKS WERE LEFT OUT OF THE WATCH AT
THIS TIME. LOWS SUNDAY NIGHT ARE EXPECTED TO RANGE FROM 10 TO 15
BELOW ZERO NORTHWEST TO THE MID TEENS SOUTHEAST. HIGHS ON MONDAY
WILL RANGE FROM THE SINGLE DIGITS NORTHWEST TO AROUND 20 SOUTHEAST.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
WELL BELOW NORMAL TEMPERATURES WILL CONTINUE THROUGH THE LONG 
TERM PERIOD...

MONDAY NIGHT-TUESDAY...IN THE WAKE OF MONDAY/S STORM SYSTEM...THE 
COMBINATION OF POTENTIALLY DEEP FRESH SNOW COVER...DECREASING 
WIND...AND CLEARING SKIES SHOULD ALLOW TEMPS TO PLUMMET LATER AT 
NIGHT WELL BELOW ZERO IN MOST AREAS...WITH MANY MIN TEMPS POSSIBLY 
DIPPING INTO THE -10 TO -20 F RANGE BY DAYBREAK TUESDAY FOR AREAS 
NORTH OF INTERSTATE 90. WINDS SHOULD BECOME LIGHT AT THAT TIME...SO 
WIND CHILL VALUES SHOULD BE CLOSE TO ACTUAL AIR TEMPS. AFTER THE 
BRUTALLY COLD START...EXPECT MOSTLY SUNNY SKIES WITH OCCASIONAL HIGH 
CLOUDS PASSING THROUGH. MAX TEMPS ON TUE SHOULD EVENTUALLY REACH THE 
LOWER/MID TEENS IN VALLEYS AND SINGLE DIGITS FOR HIGHER ELEVATIONS.

TUE NT-THU...A CLIPPER SYSTEM IS EXPECTED TO PASS ACROSS THE GREAT 
LAKES AND INTO THE SAINT LAWRENCE VALLEY DURING THIS PERIOD. SOME 
WARM ADVECTION SNOW SHOWERS WILL BE POSSIBLE LATE TUE NT INTO EARLY 
WED...ESP ACROSS NW AREAS. THEN...ANOTHER ARCTIC FRONT ASSOCIATED 
WITH THIS SYSTEM IS EXPECTED TO TRAVERSE THE REGION LATE WED OR 
EARLY THU...PRECEDED AND ACCOMPANIED BY SNOW SHOWERS...WITH THE BEST 
CHANCE FOR SOME MINOR ACCUMS ACROSS THE SOUTHERN ADIRONDACKS AND 
SOUTHERN VT. SNOW SHOWERS SHOULD DECREASE IN AREAL COVERAGE BY LATE 
THU. TEMPS WILL REMAIN BELOW NORMAL...BUT WILL MODERATE A BIT IN THE 
SOUTHWEST FLOW AHEAD OF THE INCOMING FRONTAL BOUNDARY...WITH WED MAX 
TEMPS POSSIBLY REACHING AROUND OR JUST OVER 30 IN VALLEYS...WITH 
MAINLY MID/UPPER 20S FOR HIGHER ELEVATIONS. OVERNIGHT MIN TEMPS TUE 
NT/WED AM SHOULD FALL INTO THE SINGLE DIGITS IN MOST AREAS...WITH 
SOME SUBZERO MINS POSSIBLE ACROSS HIGHER TERRAIN AND POSSIBLY ACROSS 
THE LAKE GEORGE REGION. IT IS POSSIBLE THAT MIN TEMPS OCCUR EARLY 
TUE EVE...THEN RISE LATER AT NIGHT AS A SOUTHERLY FLOW DEVELOPS 
ALONG WITH INCREASING CLOUDS. WED NT/THU AM MINS SHOULD FALL INTO 
THE TEENS IN MOST VALLEYS...WITH SINGLE DIGITS CONFINED TO THE 
SOUTHERN ADIRONDACKS. ON THU...MAX TEMPS SHOULD REACH THE TEENS TO 
LOWER 20S...BUT MAY FALL IN THE AFTERNOON AS LOW LEVEL COLD 
ADVECTION STRENGTHENS.

THU NT-FRI...GENERALLY COLD AND DRY. MIN TEMPS SHOULD FALL BELOW 
ZERO IN MOST AREAS...AND WITH SOME LINGERING WIND...WIND CHILL 
VALUES MAY REACH ADVISORY CRITERIA IN MANY AREAS...AND POSSIBLY 
WARNING LEVELS ACROSS PORTIONS OF THE SOUTHERN ADIRONDACKS. FRI MAX 
TEMPS SHOULD ONLY REACH THE LOWER/MID TEENS IN VALLEYS...AND SINGLE 
DIGITS ACROSS MOST HIGHER ELEVATIONS.

&&

.AVIATION /11Z SATURDAY THROUGH WEDNESDAY/...
LOW PRESSURE WILL CONTINUE STRENGTHENING WELL OFF THE SOUTHEAST
NEW ENGLAND COAST...AS HIGH PRESSURE BUILDS IN FROM THE GREAT
LAKES REGION TODAY. A WEAK UPPER LEVEL DISTURBANCE WILL APPROACH
FROM THE GREAT LAKES LATER TONIGHT.

MAINLY CLEAR SKIES ALONG WITH VFR CONDITIONS WILL BE IN PLACE
THROUGH TODAY...WITH JUST A FEW STRATOCU CLOUDS AROUND BY LATE
IN THE DAY. STRATOCU CLOUDS WILL THEN INCREASE SAT EVENING IN
ADVANCE OF A WEAK UPPER LEVEL DISTURBANCE APPROACHING FROM THE
GREAT LAKES. SOME MVFR CIGS WILL BE POSSIBLE AFTER 07Z/SUN AT
KPSF. ELSEWHERE...MOST CIGS WILL BE IN THE 3500-4500 FT AGL
RANGE...BUT THERE IS A SMALL CHANCE THAT MVFR CIGS COULD DEVELOP
AT KALB AND KGFL TOWARD 12Z/SUN.

WEST/NORTHWEST WINDS WILL CONTINUE AT 10-15 KT TODAY...WITH SOME
GUSTS OCCASIONALLY REACHING UP TO 25 KT AT TIMES. WEST WINDS WILL
DECREASE TO UNDER 10 KT AROUND SUNSET AND SHOULD CONTINUE LIGHT
FROM THE WEST LATER SAT NT.

OUTLOOK...
SUNDAY NIGHT: HIGH OPERATIONAL IMPACT. DEFINITE SN.
MONDAY: HIGH OPERATIONAL IMPACT. DEFINITE SN.
MONDAY NIGHT: NO OPERATIONAL IMPACT.  NO SIG WX.
TUESDAY: NO OPERATIONAL IMPACT.  NO SIG WX.
TUESDAY NIGHT: NO OPERATIONAL IMPACT.  NO SIG WX.
WEDNESDAY: MODERATE OPERATIONAL IMPACT. CHANCE OF SHSN.

&&

.HYDROLOGY...
NO SIGNIFICANT HYDRO PROBLEMS ARE EXPECTED INTO EARLY NEXT WEEK.

A WIDESPREAD SNOWFALL IS EXPECTED FROM LATE SUNDAY EVENING INTO
MONDAY WITH MODERATE TO SIGNIFICANT ACCUMULATIONS POSSIBLE. ANY
CHANGE IN THE EXPECTED TRACK OF THE STORM WILL HAVE A BIG IMPACT
ON THE SNOWFALL FORECAST.

ICE WILL CONTINUE TO THICKEN ON RIVERS...STREAMS...CREEKS...LAKES 
AND OTHER BODIES OF WATER.

FOR DETAILS ON SPECIFIC AREA RIVERS AND LAKES...INCLUDING OBSERVED 
AND FORECAST RIVER STAGES AND LAKE ELEVATIONS...PLEASE VISIT THE 
ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ GRAPHS ON OUR WEBSITE.

&&

.ALY WATCHES/WARNINGS/ADVISORIES...
CT...WINTER STORM WATCH FROM SUNDAY EVENING THROUGH MONDAY 
     AFTERNOON FOR CTZ001-013.
     WIND CHILL ADVISORY UNTIL 11 AM EST THIS MORNING FOR CTZ001-
     013.
NY...WINTER STORM WATCH FROM SUNDAY EVENING THROUGH MONDAY 
     AFTERNOON FOR NYZ038>041-047>054-058>061-063>066-082>084.
     WIND CHILL ADVISORY UNTIL 11 AM EST THIS MORNING FOR 
     NYZ038>043-047>054-058>061-063>066-082>084.
     WIND CHILL WARNING UNTIL 11 AM EST THIS MORNING FOR NYZ032-033.
MA...WINTER STORM WATCH FROM SUNDAY EVENING THROUGH MONDAY 
     AFTERNOON FOR MAZ001-025.
     WIND CHILL ADVISORY UNTIL 11 AM EST THIS MORNING FOR MAZ001-
     025.
VT...WINTER STORM WATCH FROM SUNDAY EVENING THROUGH MONDAY 
     AFTERNOON FOR VTZ013>015.
     WIND CHILL ADVISORY UNTIL 11 AM EST THIS MORNING FOR 
     VTZ013>015.

&&

$$
SYNOPSIS...IAA/11
NEAR TERM...11
SHORT TERM...11
LONG TERM...KL
AVIATION...KL/FRUGIS 
HYDROLOGY...11








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