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-- Discussion containing changed information from previous version are highlighted. --
000
FXUS61 KOKX 092354
AFDOKX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
754 PM EDT SUN MAR 9 2014

.SYNOPSIS...
HIGH PRESSURE BUILDS INTO THE AREA THROUGH EARLY THIS EVENING....
THEN OFFSHORE BY MORNING. MULTIPLE WAVES OF LOW PRESSURE WILL
THEN PASS TO THE NORTH OF THE AREA MONDAY INTO MONDAY NIGHT. A
STORM SYSTEM WILL LIKELY IMPACT THE AREA DURING THE MIDDLE OF THE
WEEK. BLUSTERY WEATHER RETURNS FOR THURSDAY WITH HIGH PRESSURE
BUILDING IN BEHIND THE DEPARTING LOW. A COLD FRONT WILL MOVE
ACROSS THE AREA ON SATURDAY.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
FORECAST IS ON TRACK. JUST MINOR ADJUSTMENTS NEEDED TO HOURLY TEMP
AND DEWPOINT GRIDS.

A RIDGE OF HIGH PRESSURE BUILDS ACROSS THE AREA THIS EVENING AND
THEN OFFSHORE BY EARLY MON MORNING. MID LEVEL CLOUDS ACROSS THE
GREAT LAKES IN ASSOCIATION WITH WARM ADVECTION AHEAD OF THE FIRST
IN A SERIES OF WAVES TRACKING NW TO SE ACROSS CANADA AND INTO THE
GREAT LAKES...WILL WORK INTO THE AREA THIS EVENING. WEAK WARM
ADVECTION WILL PRODUCE A LOW CHANCE FOR LIGHT SNOW DURING THE PRE-
DAWN HOURS...PRIMARILY ACROSS INLAND AREAS. THIS IS A LIGHT EVENT
WITH PERHAPS A DUSTING OF SNOW.

OVERNIGHT LOWS WILL BE IN THE 20S...WITH THE EXCEPTION BEING
NYC WITH READINGS AROUND FREEZING. THIS IS AT OR JUST BELOW NORMAL.
USED A BLEND OF THE MET/MAV MOS.

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/...
FAST NW TO SE FLOW ALOFT WILL STEER A SERIES OF WAVES ACROSS THE
GREAT LAKES AND INTO THE NE ON MON WITH A WARM FRONT SITUATED JUST
NORTH OF THE AREA. THE AXIS GRADUALLY LIFTS NORTH MON EVE
SHUTTING DOWN ANY LIGHT PCPN. ONCE AGAIN...MID LEVEL CLOUDS WILL
PRODUCE CLOUDY CONDITIONS IN THE MORNING...WITH SOME IMPROVEMENT IN
THE AFT. PCPN CHANCES ARE LOW DURING THE DAY AND ANY LIGHT SNOW
IN THE MORNING WILL TRANSITION OVER TO RAIN. TOTAL LIQUID SHOULD
BE NO MORE THAN A FEW HUNDREDTHS OF AN INCH WITH THE BEST CHANCE
ACROSS INLAND AREAS.

TEMPS WILL WARM ABOVE FREEZING SHORTLY AFTER DAYBREAK AT THE
COAST...AND BY MID MORNING WELL INLAND. A STRENGTHENING SW FLOW AND
WARM ADVECTION WILL PRODUCE HIGHS IN THE 40S...WITH A FEW 50S
POSSIBLY NORTH AND WEST OF NYC WHERE THERE WILL BE LESS OF A
MARINE INFLUENCE.

SURFACE TROUGH FROM PRIMARY LOW PASSES ACROSS NEW ENGLAND LATE
MON NIGHT WITH A WIND SHIFT TO THE W-NW BY DAYBREAK TUE. SKIES
WILL CLEAR WITH MILDER LOWS GENERALLY IN THE 30S. A FEW OF THE
NORMALLY COLDER SPOTS WILL GET INTO THE UPPER 20S.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
MODELS ARE IN GOOD AGREEMENT WITH THE H5 FLOW THROUGH TUE...BUT
CONTINUE TO HAVE ISSUES WITH PAC NW ENERGY MOVING ONSHORE AND
PHASING WITH THE SOUTHERN BRANCH OF THE JET STREAM BY MIDWEEK. WHILE
CONFIDENCE IS INCREASING THAT WE WILL BE IMPACTED BY THIS
SYSTEM...THE DETAILS REMAIN IN QUESTION.

THE H5 FLOW STARTS OFF NEARLY ZONAL ACROSS NE QUARTER OF THE
COUNTRY AS A TROUGH OVER THE ROCKIES TRACKS EWD AND EVENTUALLY
PHASES WITH SOUTHERN STREAM ENERGY MOVING ACROSS THE DEEP SOUTH.
DIFFERENCES REMAIN IN THE TRACK AND STRENGTH OF THE SFC LOW ONCE
IT PHASES WITH THE SOUTHERN STREAM ENERGY OVER THE OH VALLEY AND
CONTINUES E. SUNYSB ENSEMBLE SENSITIVITY ANALYSIS INDICATES THAT
THE UNCERTAINTY LIES WITH THIS PAC ENERGY THAT WILL MOVE ONSHORE
EARLY MON MORNING. A DEEPER SOLN WOULD LEND TO MORE RIDGING
DOWNSTREAM AND ULTIMATELY RESULT IN A TRACK CLOSER TO THE COAST.
THESE DIFFERENCES COULD LEAD TO SIGNIFICANT CHANGES IN THE
FORECAST AS A SOLN FURTHER OFFSHORE WOULD LIKELY BE COLDER. HAVE
KEPT WITH THE IDEA OF MOSTLY A LIQUID EVENT...WITH THE POSSIBILITY
OF SNOW AS THE STORM DEPARTS AND COLDER AIR FILTERS IN ON A NLY
FLOW.

HOPING THAT ONCE THE PAC ENERGY MOVES ONSHORE TOMORROW WHERE THERE
IS BETTER DATA SAMPLING...SOLNS WILL CONVERGE FURTHER AND
CONFIDENCE WILL INCREASE.

AS THE STORM DEPARTS...HIGH PRES WILL BUILD IN. THE PRES GRADIENT
WILL BE TIGHT WITH STRONG CAA INTO THU. IT WILL BE BLUSTERY ON THU
WITH HIGHS REMAINING AT OR BELOW FREEZING. DRY WEATHER CONTINUES
INTO THE WEEKEND. PERHAPS A FEW SHOWERS ON SAT WITH A COLD
FROPA...BUT KEPT SILENT 20 POP FOR NOW AS MOISTURE IS LIMITED.

TEMPERATURES DURING THE WEEK WILL BE A SEESAW...AS IS TYPICAL OF
MARCH...STARTING OFF AROUND 5 DEGREES ABOVE NORMAL ON TUE...TO
AROUND 15 DEGREES NORMAL ON THU...BACK TO ABOVE NORMAL LEVELS ON
SAT.

&&

.AVIATION /00Z MONDAY THROUGH FRIDAY/...
-- Changed Discussion --
VFR THROUGH THE TAF PERIOD.

WINDS TO THE RIGHT OF 310 MAG AT KNYC TERMINALS WILL BACK EITHER
RIGHT OVER OR JUST TO THE LEFT OF 310 MAG AND DIMINISH TO 5-0 KT
THIS EVENING...AND THEN WILL BACK TO THE SW AFTER MIDNIGHT
TONIGHT. WINDS OTHERWISE WILL BE NW...BACKING TO THE SW CONTINUE
TO BACK TO THE SW. WINDS TONIGHT WILL RANGE FROM 4-8 KT.

SW WINDS INCREASE TO 8-12 KT MONDAY MORNING...AND WILL GRADUALLY
DIMINISH TOWARDS EVENING.

.OUTLOOK FOR 00Z TUE THROUGH FRI...
.MON NIGHT...SUB VFR POSSIBLE OVERNIGHT.
.TUE-TUE NIGHT...VFR. WEST WINDS WITH GUSTS TO 20KT DURING THE
DAY.
.WED-WED NIGHT...SUB-VFR LIKELY IN SN AND/OR RA.
.THU...IMPROVING TO VFR EARLY. NW G25-30KT.
.FRI...VFR.
-- End Changed Discussion --

&&

.MARINE...
SURFACE RIDGE AXIS BUILDS ACROSS THE WATERS TONIGHT WITH
DIMINISHING WINDS AND SEAS. A MODERATE SW FLOW MON AFT WILL
RESULT IN WINDS AND SEAS STAYING JUST BELOW CRITERIA ON THE OCEAN
WATERS. SW FLOW DIMINISHES BY MON EVE AS A WEAK TROUGH OF LOW
PRESSURE APPROACHES FROM THE WEST.

MARGINAL SCA CONDS MAY BE REACHED ON THE EASTERN OCEAN WATERS TUE
MORNING WITH A MODERATE WLY FLOW IN PLACE. OTHERWISE...TRANQUIL
CONDS WILL PREVAIL ACROSS THE WATERS INTO WED AFTN WITH WEAK HIGH
PRES IN CONTROL.

UNCERTAINTY REMAINS WITH THE TIMING AND STRENGTH OF THE MIDWEEK
STORM...HOWEVER SCA CONDS ARE LIKELY TO PRECEDE THE SYSTEM...WITH
GALES POSSIBLE BEHIND IT. WILL HIGHLIGHT THIS POTENTIAL IN THE
HWO. ANY HEADLINES SHOULD BE DOWN BY FRI MORNING...ALTHOUGH AN
INCREASING SW FLOW MAY RESULT IN SCA CONDS ON THE OCEAN WATERS
LATE FRI AND FRI NIGHT.

&&

.HYDROLOGY...
NO SIGNIFICANT WIDESPREAD PRECIPITATION EXPECTED THROUGH EARLY
NEXT WEEK.

THERE IS POTENTIAL FOR A SIGNIFICANT PRECIPITATION DURING THE
MIDDLE OF NEXT WEEK AS A STORM SYSTEM TRACKS NEAR THE
REGION. CURRENTLY...BETWEEN 1/2 AND 1 INCH OF PRECIPITATION IS
FORECAST...BUT UNCERTAINTY IN THE FORECAST DETAILS CONTINUES AT
THIS TIME AND THIS COULD CHANGE SIGNIFICANTLY.

&&

.EQUIPMENT...
THE NOAA WEATHER RADIO TRANSMITTER THAT SERVES THE NEW YORK CITY
METROPOLITAN AREA REMAINS OUT OF SERVICE DUE TO RADIO FREQUENCY
INTERFERENCE WITH THE U.S COAST GUARD TRANSMITTER.

FOR MORE INFORMATION SEE THE FOLLOWING PUBLIC INFORMATION
STATEMENT (ALL LOWER CASE):
WWW.ERH.NOAA.GOV/OKX/PRODUCTS/STATIC.TXT

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
NY...NONE.
NJ...NONE.
MARINE...NONE.

&&

$$
SYNOPSIS...24/DW
NEAR TERM...DW
SHORT TERM...DW
LONG TERM...24
AVIATION...MPS
MARINE...24/DW
HYDROLOGY...24/DW
EQUIPMENT...