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Area Forecast Discussion
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000
FXUS61 KALY 030450
AFDALY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ALBANY NY
1245 AM EDT WED SEP 3 2014

.SYNOPSIS...
A COLD FRONT WILL MOVE TO THE EAST OVERNIGHT...TAKING THE THE 
SHOWERS AND LEFTOVER THUNDERSTORMS WITH IT. HIGH PRESSURE WILL MOVE 
TOMORROW TO BRING SLIGHTLY DRIER INTO THE REGION.   


&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
AS OF 1245 AM EDT...THE LINE OF SHOWERS AND THUNDERSTORMS HAS 
CONTINUED TO WEAKEN CONSIDERABLY. IN FACT...THERE HAVE BEEN NO 
CLOUD TO GROUND LIGHTNING STRIKES IN THE PAST HALF HOUR OR SO. THE 
SHOWERS WERE MOVING QUITE QUICKLY...WELL TO THE WEST OF THE CAPITAL 
REGION...AND WILL EXIT OUR EASTERN AREAS BEFORE 400 AM. 

THE COLD FRONT WAS ON ITS HEELS...JUST TO THE WEST OF THE HUDSON 
VALLEY. WE WILL KEEP A SLIGHT CHANCE OF SHOWERS EVERYWHERE IN FOR 
THE NEXT SEVERAL HOURS UNTIL IT COMPLETELY CLEARS THE REGION.

TEMPERATURES HAD ALREADY DROPPED INTO THE 60S TO THE WEST OF THE 
HUDSON VALLEY...AND WILL DROP INTO THE 60S ACROSS THE REMAINDER OF 
THE REGION FOR THE REST OF THE OVERNIGHT.

THE SKY WILL PARTIALLY CLEAR BY DAYBREAK.   

&&

.SHORT TERM /6 AM THIS MORNING THROUGH FRIDAY/...
DRYING AND CLEARING THROUGH THE DAY WEDNESDAY...WITH A STEADY
WEST TO NORTH BREEZE. HIGHS WEDNESDAY IN THE UPPER 70S TO MID 80S.
DRY WEATHER CONTINUES THURSDAY WITH LIGHT WINDS AS HIGH PRESSURE
CENTERS ITSELF OVER THE REGION. SOME WEAK WARM ADVECTION COULD
BEGIN LATE THURSDAY AFTERNOON. HIGHS THURSDAY IN THE LOWER TO MID
80S. WARM ADVECTION CONTINUES FRIDAY AND BASED ON BOUNDARY LAYER
TEMPERATURES AND SOUTHWEST BOUNDARY LAYER FLOW...TEMPERATURES
SHOULD REACH THE MID TO UPPER 80S...A LITTLE COOLER IN HIGHER
TERRAIN. THERE COULD BE AN ISOLATED THUNDERSTORM IN THE SOUTHERN
ADIRONDACKS AND WESTERN MOHAWK VALLEY LATE FRIDAY AFTERNOON WELL
AHEAD OF THE NEXT COLD FRONT.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
THE LONG TERM PERIOD WILL BE CHARACTERIZED BY UNSETTLED WEATHER 
EARLY IN THE PERIOD...BUT FOLLOWED BY DRY AND TRANQUIL CONDITIONS TO 
END THE WEEKEND AND INTO EARLY NEXT WEEK.

AT THE START OF THE LONG TERM PERIOD...A COLD FRONT WILL BE 
APPROACHING THE FORECAST AREA FROM THE GREAT LAKES REGION FRIDAY 
NIGHT INTO EARLY SATURDAY...BRINGING THE THREAT OF SHOWERS AND 
THUNDERSTORMS TO THE REGION. LONG RANGE GUIDANCE STILL HAS SOME 
TIMING DIFFERENCES REGARDING THE TIMING OF THE COLD FRONT PASSAGE 
ACROSS THE FORECAST AREA...BUT ARE CONVERGING ON A SOLUTION THAT 
WOULD FEATURE THE COLD FRONT MOVING THROUGH THE REGION DURING THE 
DAY SATURDAY.

WITH SOUTH/SOUTHWESTERLY FLOW AHEAD OF THE COLD FRONT THANKS IN PART 
TO A RETURN FLOW SETUP FROM DEPARTING HIGH PRESSURE MOVING TO THE 
EAST...LOW-LEVEL MOISTURE WILL ONCE AGAIN BE TRANSPORTED ACROSS THE 
REGION AS DEWPOINTS SURGE BACK INTO THE LOW AND MID 60S. LOWS FRIDAY 
NIGHT WILL BE MUGGY...GENERALLY IN THE 60S FOR MOST LOCATIONS EXCEPT 
FOR UPPER 50S ACROSS THE HIGHER TERRAIN OF THE SOUTHERN ADIRONDACKS. 
ACCOMPANYING THE INCREASE IN HUMIDITY SHOULD BE EXTENSIVE CLOUD 
COVER WHICH MAY LIMIT OVERALL INSTABILITY SATURDAY 
AFTERNOON/EVENING. MIDLEVEL LAPSE RATES ARE NOT OVERLY IMPRESSIVE 
EITHER...GENERALLY AROUND 6.0 C/KM WHICH SHOULD ALSO HAMPER THE 
POTENCY OF ANY THUNDERSTORMS...DESPITE BULK SHEAR VALUES IN THE 
0-6KM LAYER OF 30-40 KNOTS.

REGARDLESS...EXPECT A PERIOD OF SCATTERED SHOWERS AND THUNDERSTORMS 
BEGINNING LATE FRIDAY NIGHT ACROSS WESTERN AREAS AND ACROSS THE 
ENTIRE FORECAST AREA DURING THE DAY SATURDAY AS THE COLD FRONT 
PUSHES THROUGH THE REGION. THE GREATEST THREAT FOR ANY LOCALIZED 
STRONGER STORMS LOOKS TO BE FOR AREAS SOUTH OF THE CAPITAL 
REGION...WHERE ENOUGH BREAKS IN THE CLOUD COVER COULD OCCUR TO 
INCREASE INSTABILITY AND ENHANCE DESTABILIZATION. THE THUNDERSTORM 
THREAT SHOULD RAPIDLY DIMINISH BY THE LATE EVENING HOURS WITH THE 
LOSS OF DAYTIME HEATING.

SHOWERS MAY LINGER ESPECIALLY FOR AREAS SOUTH AND EAST OF THE 
CAPITAL REGION SATURDAY NIGHT AS THE COLD FRONT SLOWLY EXITS TO THE 
EAST. BEHIND THE COLD FRONT...A SPRAWLING AREA OF HIGH PRESSURE WILL 
BUILD ACROSS THE REGION RESULTING IN AN EXTENDED PERIOD OF DRY 
WEATHER AND PARTLY CLOUDY SKIES BEGINNING SUNDAY AND CONTINUING INTO 
EARLY NEXT WEEK.

HIGH TEMPERATURES FOR THE REMAINDER OF THE LONG TERM PERIOD WILL 
GENERALLY RANGE FROM THE MID 60S TO MID 70S WITH LOWS GENERALLY 
RANGING FROM THE MID 40S TO TO MID 50S.

&&

.AVIATION /06Z WEDNESDAY THROUGH SUNDAY/...
PERIOD OF MVFR/IFR CONDITIONS EXPECTED THROUGH TONIGHT AS
COMBINATION OF SHOWERS/EMBEDDED-THUNDERSTORMS MOVES ACROSS THE
REGION. WINDS WILL SHIFT FROM THE SOUTHERLY DIRECTION TO A WEST-
NORTHWEST DIRECTION AT SPEEDS 5-10KTS. THIS MAY ALSO INHIBIT FROM
TOO MUCH FOG FORMATION OVERNIGHT.

CONDITIONS WILL IMPROVE TO VFR SHORTLY AFTER 12Z WITH A WEST-
NORTHWEST WIND OF 5-10KTS WITH SOME HIGHER GUSTS.

OUTLOOK...

WEDNESDAY NIGHT: NO OPERATIONAL IMPACT.  NO SIG WX.
THURSDAY: NO OPERATIONAL IMPACT.  NO SIG WX.
THURSDAY NIGHT: NO OPERATIONAL IMPACT.  NO SIG WX.
FRIDAY: NO OPERATIONAL IMPACT.  NO SIG WX.
FRIDAY NIGHT: MODERATE OPERATIONAL IMPACT. CHANCE OF SHRA...TSRA.
SATURDAY: MODERATE OPERATIONAL IMPACT. CHANCE OF SHRA...TSRA.
SATURDAY NIGHT: MODERATE OPERATIONAL IMPACT. CHANCE OF SHRA.
SUNDAY: NO OPERATIONAL IMPACT.  NO SIG WX.

&&

.FIRE WEATHER...
A COLD FRONT WILL APPROACH THE REGION LATE INTO THE EVENING
BRINGING SHOWERS AND THUNDERSTORMS...SOME OF WHICH COULD CONTAIN
HEAVY RAINFALL AND GUSTY WINDS. SLIGHTLY COOLER AND NOTICEABLY
DRIER AIR WILL FOLLOW ON WEDNESDAY. THE DRY WEATHER IS EXPECTED TO
CONTINUE THE REST OF THE WORK WEEK WITH WARMING TEMPERATURES ONCE
MORE.

RH VALUES TONIGHT AND TOMORROW NIGHT WILL BE 80 TO 100 PERCENT.
MINIMUM RH VALUES WEDNESDAY WILL BE 35 TO 45 PERCENT AND ON
THURSDAY 40 TO 50 PERCENT.

WINDS WILL BE SOUTHWEST AT 15 MPH OR LESS THIS EVENING...SHIFTING
TO NORTHWEST AFTER MIDNIGHT. WINDS WILL BE WEST TO NORTH TOMORROW
AT AROUND 15 MPH...WITH POSSIBLE GUSTS IN THE AFTERNOON TO 20 MPH.
WILL WILL DECREASE WEDNESDAY NIGHT TO LESS THAN 15 MPH THEN SHIFT
TO SOUTH AND SOUTHWEST THURSDAY AFTERNOON AT 15 MPH OR LESS.

&&

.HYDROLOGY...
SHOWER AND THUNDERSTORM COVERAGE SHOULD INCREASE FROM NORTHWEST
TO SOUTHEAST THROUGH THE EVENING. THE SHOWERS AND THUNDERSTORMS
SHOULD EXIT THE REGION LATE IN THE EVENING AND THROUGH THE EARLY
MORNING HOURS.  AVERAGE BASIN RAINFALL WITH THESE STORMS IS
PROJECTED TO BE AROUND HALF AN INCH ACROSS NORTHERN AREAS NORTH
OF ALBANY. LOOK FOR AROUND HALF AN INCH IN AND AROUND THE CAPITAL
REGION...AND LESSER AMOUNTS OF A QUARTER INCH OR LESS FURTHER
SOUTH.

ANY THUNDERSTORMS COULD PRODUCE LOCALLY HEAVY RAINFALL...POSSIBLY
EXCEEDING AN INCH AND THIS RAIN COULD FALL IN A SHORT TIME.
THEREFORE THERE IS THE POTENTIAL FOR PONDING OF WATER ON ROADWAYS
AND AREAS OF POOR DRAINAGE. 

DRIER WEATHER RETURNS BY WEDNESDAY...LASTING THROUGH THE REMAINDER 
OF THE WORKWEEK. 

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...NONE.
NY...NONE.
MA...NONE.
VT...NONE.

&&

$$
SYNOPSIS...HWJIV
NEAR TERM...HWJIV/NAS
SHORT TERM...NAS
LONG TERM...IRL/BGM
AVIATION...WASULA
FIRE WEATHER...NAS
HYDROLOGY...NAS









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