Area Forecast Discussion
Issued by NWS Upton, NY

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS61 KOKX 271512
AFDOKX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
1112 AM EDT WED AUG 27 2014

.SYNOPSIS...
A COLD FRONT APPROACHES TODAY AND PASSES THROUGH THIS EVENING. HIGH
PRESSURE BUILDS IN BEHIND THE FRONT THROUGH FRIDAY BEFORE SHIFTING
OFFSHORE FOR THE WEEKEND. ANOTHER FRONTAL SYSTEM IMPACTS THE AREA
LATE IN THE WEEKEND INTO EARLY NEXT WEEK.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
REPORTS OF CHEST TO HEAD HIGH SURF ALONG WITH STRONG RIP CURRENTS
HAVE STARTED TO COME IN. CONDITIONS WILL ONLY GET WORSE THRU THU
MRNG...BEFORE THE SWELL RETREATS INTO THE N ATLANTIC. AS A
RESULT...HAVE ISSUED A HIGH SURF ADVY THRU THU. ALTHOUGH WAVES MAY
FALL JUST SHORT OF THE 7 FT CRITERIA INTO THE EARLY EVE...IN THIS
CASE THE ADVY INCLUDES THE DANGEROUS RIP THREAT AS WELL...WHICH IS
WHY THE PRODUCT HAS BEEN ISSUED TO INCLUDE THIS AFTERNOON.

FORECAST ON TRACK...WITH WEAK HIGH PRESSURE KEEPING US DRY THROUGH
THE MORNING WITH A GOOD DEAL OF SUNSHINE. A COLD FRONT WITH THEN
MOVE TO POSITION NEAR THE NW PORTION OF THE CWA LATE IN THE
AFTERNOON. ISOLATED/SCATTERED SHOWERS AND THUNDERSTORMS RIGHT
AHEAD OF THE FRONT THIS AFTERNOON...LIMITED TO NORTH AND WEST OF
THE CITY. TSTMS PROBABLY NOT SEVERE WITH MID LEVEL LAPSE RATE
BEING THE LIMITING FACTOR...HOWEVER STRONG GUSTS STILL A
POSSIBILITY WITH ANY THUNDERSTORM.

850MB TEMPS OF 17C...A MODERATE W TO SW BOUNDARY LAYER FLOW
HINDERING SEA BREEZES TO A DEGREE...AND MOSTLY SUNNY/PARTLY CLOUDY
CONDITIONS SHOULD ALLOW HIGHS OVER PARTS OF NE NJ/CITY/LOWER HUDSON
VALLEY REACH THE LOWER 90S. HIGHS IN THE MID AND UPPER 80S EXPECTED
FOR MOST OTHER SPOTS. SURFACE DEWPOINTS WILL RESULT IN HEAT INDICES
WITHIN A DEGREE OR TWO OF THE AMBIENT TEMPERATURE.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY NIGHT/...
THE COLD FRONT MOVES THROUGH MAINLY DURING THE EVENING HOURS. STILL
ENOUGH CAPE FOR ISOLATED/SCATTERED SHOWERS DURING THE FIRST HALF OF
THE EVENING...THEN ACTIVITY DROPS OFF NEAR MIDNIGHT WITH
STABILIZATION AND THE FRONTAL PASSAGE. STRONG WIND GUSTS STILL
POSSIBLE DURING THE EARLY EVENING.

HIGH PRESSURE BUILDS BACK IN BEHIND THE FRONT ON THURSDAY WITH A
SUNNY SKY. A NORTHERLY FLOW WILL BRING A LESS MUGGY AIRMASS AND LESS
OF A SPREAD AMONG HIGH TEMPERATURES ACROSS THE AREA. A BLEND OF
NAM/MOS GUIDANCE LOOKED GOOD WITH HIGHS CLOSER TO NORMAL. DRY
WEATHER CONTINUES THURSDAY NIGHT WITH COOLER THAN NORMAL LOWS.

DANGEROUS RIP CURRENTS AND HIGH SURF ARE EXPECTED TONIGHT THROUGH
THURSDAY. SOME MINOR BEACH EROSION AND LOCALIZED WASHOVERS CAN BE
EXPECTED ALONG THE ATLANTIC BEACHFRONT.

&&

.LONG TERM /FRIDAY THROUGH TUESDAY/...
UPPER LEVEL RIDGING BUILDS TO THE EAST COAST TO START THE
WEEKEND...THEN GRADUALLY FLATTENS TO END THE WEEKEND INTO EARLY
NEXT WEEK AS A DEEP TROUGH OVER THE ROCKIES GRADUALLY SLIDES EAST
INTO THE GREAT LAKES. THIS NORTHERN STREAM TROUGH MAY INTERACT WITH
A BIT OF SOUTHERN STREAM ENERGY AS IT SLIDES THROUGH THE NE EARLY
NEXT WEEK.

FAIR AND DRY CONDITIONS EXPECTED FRI INTO SAT AS CANADIAN
HIGH PRESSURE SLIDES OFFSHORE. TEMPS SHOULD MODERATE FROM SLIGHTLY
BELOW TO SLIGHTLY ABOVE SEASONABLE FRI INTO SAT.

MODELS STILL WITH A BIT OF TIMING/INTERACTION ISSUES WITH
APPROACHING SHORTWAVE ENERGIES FOR SUN INTO MON...BUT OVERALL THEME
IS AN APPROACHING FRONTAL SYSTEM SUN...WHICH GRADUALLY PASSES
THROUGH THE REGION SUN NIGHT INTO MONDAY. WITH APPROACHING SHORTWAVE
ENERGIES AND INCREASING WARMTH AND SOUTHERN MOISTURE AHEAD OF THE
FRONT...AN INCREASING CHANCE FOR SHRA/TSRA EXISTS ACROSS NYC AND
POINTS TO THE W/NW SUN AFT INTO EVENING...TRANSLATING EAST SUN NIGHT
INTO MON. VERY WARM AND HUMID CONDS LIKELY SUN INTO MON IN DEEP S/SW
FLOW...WITH TEMPS RUNNING SEVERAL DEGREES ABOVE SEASONABLE.

A CONTINUATION OF VERY WARM TEMPS AND DIURNAL CONVECTION POSSIBLE
THROUGH THE MIDWEEK.

&&

.AVIATION /15Z WEDNESDAY THROUGH SUNDAY/...
HIGH PRESSURE WILL MOVE TO THE EAST TODAY. A COLD FRONT PASSES
THROUGH TONIGHT WITH HIGH PRESSURE BUILDING BACK IN BEHIND IT.
-SHRA POSSIBLE AND MAYBE A RUMBLE OF THUNDER N AND W OF NYC THIS
EVENING.

VFR THROUGH THE TAF PERIOD. BRIEF LOWERING OF CIGS/VIS POSSIBLE
IN ANY RAIN SHOWERS THAT MOVE THROUGH. SW FLOW INCREASES TODAY
WITH SEA BREEZE INFLUENCE AT COASTAL TERMINALS.

     NY METRO ENHANCED AVIATION WEATHER SUPPORT...

DETAILED INFORMATION...INCLUDING HOURLY TAF WIND COMPONENT FCSTS CAN
BE FOUND AT:  HTTP:/WWW.ERH.NOAA.GOV/ZNY/N90 (LOWER CASE)

KJFK FCSTER COMMENTS: AMENDMENTS POSSIBLE FOR ANY SHOWERS THAT MAY
MAKE IT TO THE TERMINAL.

KLGA FCSTER COMMENTS: AMENDMENTS POSSIBLE FOR ANY SHOWERS THAT MAY
MAKE IT TO THE TERMINAL.

KEWR FCSTER COMMENTS: NO UNSCHEDULED AMENDMENTS EXPECTED.

THE AFTERNOON KEWR HAZE POTENTIAL FORECAST IS GREEN...WHICH IMPLIES
SLANT RANGE VISIBILITY 7SM OR GREATER OUTSIDE OF CLOUD.

KTEB FCSTER COMMENTS: NO UNSCHEDULED AMENDMENTS EXPECTED.

KHPN FCSTER COMMENTS: NO UNSCHEDULED AMENDMENTS EXPECTED.

KISP FCSTER COMMENTS: NO UNSCHEDULED AMENDMENTS EXPECTED.


.OUTLOOK FOR 12Z THU THROUGH SUN...
.THU-SAT...VFR.
.SUN...MAINLY VFR DURING THE DAY...PSBL SUB-VFR CONDITIONS IN THE
EVENING WITH PCPN.

&&

.MARINE...
SEAS ON THE OCEAN WILL BUILD AND BECOME ROUGH THIS AFTERNOON AS
AN INCREASING LONG PERIOD SE SWELL FROM CRISTOBAL MOVES INTO THE
WATERS. ROUGH CONDITIONS WILL THEN CONTINUE THROUGH AT LEAST
THURSDAY...AND PROBABLY INTO THURSDAY NIGHT. A SMALL CRAFT ADVISORY
FOR HAZARDOUS SEAS IS IN EFFECT FOR THE OCEAN ZONES FROM 2 PM TODAY
THROUGH THURSDAY AFTERNOON.

REFER TO THE LATEST FORECAST FROM THE NATIONAL HURRICANE CENTER ON
THE TRACK OF CRISTOBAL.

HIGH PRESSURE BUILDS ACROSS THE WATERS FRI AND THEN EAST OVER THE
WEEKEND. A PROLONGED PERIOD OF SLY FLOW SAT INTO SUN MAY PRODUCE
MARGINAL SCA SEAS LATE SUN INTO MONDAY.

&&

.HYDROLOGY...
A FEW TENTHS OF AN INCH OF RAINFALL IS POSSIBLE LATE THIS AFTERNOON
INTO TONIGHT WITH A CHANCE OF HIGHER AMOUNTS IN ISOLATED
THUNDERSTORMS.

NO WIDESPREAD SIGNIFICANT RAINFALL IS FORECAST THURSDAY THROUGH EARLY
NEXT WEEK.

GULF MOISTURE ADVECTS INTO THE REGION SUN INTO MON. SCT CONVECTION
DURING THIS TIME WOULD PRODUCE HEAVY DOWNPOURS...WITH POTENTIAL FOR
LOCALIZED URBAN/POOR DRAINAGE FLOODING.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
NY...HIGH SURF ADVISORY UNTIL 10 PM EDT THURSDAY FOR NYZ075-080-081-
     178-179.
NJ...NONE.
MARINE...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS FROM 2 PM THIS
     AFTERNOON TO 6 PM EDT THURSDAY FOR ANZ350-353-355.

&&

$$
SYNOPSIS...JC/NV
NEAR TERM...JMC/JC
SHORT TERM...JC
LONG TERM...NV
AVIATION...LN/MET
MARINE...JC/NV
HYDROLOGY...JC/NV






USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.