FXUS61 KOKX 281810
AFDOKX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
110 PM EST SAT NOV 28 2009
.SYNOPSIS...
A STRONG LOW PRESSURE SYSTEM EAST OF MAINE WILL MOVE SLOWLY NORTH
ACROSS THE CANADIAN MARITIMES CAUSING STRONG NORTHWEST WINDS TO
DECREASE THIS EVENING. A HIGH PRESSURE RIDGE WILL MOVE ACROSS THE
AREA SUNDAY...FOLLOWED BY A COLD FRONT MONDAY. ANOTHER HIGH PRESSURE
SYSTEM WILL RETURN TUESDAY AND WEDNESDAY. ANOTHER STORM WILL TRACK
UP THE EAST COAST WEDNESDAY NIGHT INTO THURSDAY. HIGH PRESSURE BUILDS
TO THE SOUTH ON FRIDAY.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
SOLID WIND ADVISORY THIS MRNG WITH PEAK GUSTS OF 53 MPH AT KCDW AND
KHPN. PUBLIC INFORMATION STATEMENT HAS LATEST PEAK GUSTS ACROSS THE CWA.
STLT INDICATES ERN ZONES STILL BKN-OVC WITH CU DEVELOPMENT ACROSS
THE LWR HUDSON VALLEY. 12Z OKX SOUNDING HAS A CONVECTIVE TEMP OF
50F...SO INCREASED CLOUD COVER THIS AFTN WITH SCT-BKN N TRENDING
TO FEW-SCT ALONG THE S COAST. BUMPED UP TEMPS A FEW DEGREES...CLOSE
TO THE MET GUIDANCE...AS TEMPS HAVE ALREADY HIT THE L50S IN THE
METRO WITH SUNSHINE AND GOOD MIXING. WIND ADVY TO REMAIN IN PLACE
THIS AFTN. WINDS WILL BEGIN TO SLOWLY WIND DOWN AND EXPIRATION AT
4PM IS EXPECTED.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH MONDAY/...
AS THE STORM LIFTS FURTHER INTO EASTERN CANADA TONIGHT ALLOWING THE
PRESSURE GRADIENT TO RELAX...WINDS WILL ABATE. SKIES WILL BE
MOSTLY CLEAR...BUT WINDS SHOULD REMAIN UP ENOUGH TO KEEP THE
BOTTOM FROM FROM FALLING OUT. LOWS TONIGHT WILL DROP TO NEAR
FREEZING ACROSS THE INTERIOR...MID TO UPPER 30S NEAR THE WATER.
A BROAD UPPER RIDGE OVER THE EASTERN HALF OF THE COUNTRY BUILDS
ACROSS THE AREA INTO SUN WITH THE CENTER OF THE SFC HIGH MOVING
OFF THE SOUTHEAST COAST DURING THE DAY. WEST WINDS WILL VEER
AROUND TO THE SW LATE IN RESPONSE TO AN APPROACHING COLD FRONT IN
THE OHIO VALLEY. SKIES WILL REMAIN MOSTLY CLEAR DURING THE DAY WITH
INCREASING MID AND HIGH CLOUDS AT NIGHT. MODELS IN GOOD AGREEMENT
THAT THERE WILL BE MEASURABLE PRECIP WITH FROPA ON MON...SO HAVE
INCREASED POPS TO LIKELY.
TEMPERATURES WILL BE A BIT WARMER ON SUN AND MON...WITH HIGHS IN
THE LOWER 50S...A FEW DEGREES ABOVE NORMAL.
&&
.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
ACTIVE WEATHER PATTERN THROUGH THE EXTENDED PERIOD WITH BOTH
SOUTHERN AND NORTHERN STREAMS. LEANED TOWARD THE HPC GUIDANCE AND
ECMWF THROUGH THE PERIOD AS GFS CONTINUES TO BE TOO PROGRESSIVE.
SOME COLDER AIR DOES MOVES INTO THE REGION BEHIND A COLD FRONT
MONDAY NIGHT INTO TUESDAY NIGHT...THEN THE REST OF THE EXTENDED
PERIOD LOOKS TO BE NEAR NORMAL.
OUR NEXT WEATHER MAKER WILL BE WED NIGHT THRU THU AS LOW PRES MOVES
UP THE EAST COAST. DESPITE THE COLDER AIR MOST PRECIPITATION ACROSS
THE REGION WILL BE LIQUID...WITH SOME SNOW ACROSS THE HIGHER
ELEVATIONS OF THE LOWER HUDSON VALLEY WEDNESDAY NIGHT AND POSSIBLY
THURSDAY NIGHT DEPENDING ON THE SPEED OF THE SYSTEM.
&&
.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
VFR WEATHER CONDITIONS WILL PERSIST THROUGH SUNDAY NIGHT.
STRONG W-NW WINDS WILL SLOWLY DECREASE FROM W TO E WITH THE APPROACH
OF SUNSET. WIND DIRECTIONS MAINLY 290-310 DEGS AT 20-25 KT WITH
GUSTS 30-40 KT WILL SLOWLY BACK TO 270-290 DEGS AT 10-15 KT WITH
NO GUSTS AFT 00Z. LLWS IS POSSIBLE UNTIL 21Z. WIND SPEEDS WILL
DECREASE TO LESS THAN 10 KT AROUND MIDNIGHT.
AS HIGH PRES MOVES OFF THE COAST SUNDAY...WINDS WILL BECOME SW
AROUND 10 KT BETWEEN 16Z AND 18Z.
OUTLOOK 00Z MONDAY THROUGH THURSDAY...
SUN NIGHT...VFR CIGS.
MON ...SUB-VFR CIGS AND VSBY LIKELY IN RAIN.
MON NIGHT-TUE...SUB VFR CIGS POSSIBLE W AND N OF NYC.
TUE NIGHT- WED...VFR.
WEDNESDAY NIGHT-THU...SUB VFR CONDITIONS POSSIBLE.
&&
.MARINE...
GALES WILL CONTINUE TODAY WITH A DIMINISHING TREND THIS AFTN. FCST
BRINGS PEAK GUSTS DOWN SLIGHTLY TO AROUND 45 KT AS THE AXIS OF
STRONGEST WINDS ALOFT TRACKS EWD.
THE GALE FORCE WINDS WILL DIMINISH THIS EVENING AND OVERNIGHT AS
THE PRESSURE GRADIENT WEAKENS. HIGH PRESSURE PASSES TO THE SOUTH
SUNDAY. WINDS BACK TO THE SOUTHWEST SUNDAY AHEAD OF A COLD FRONT.
THIS FRONT LOOKS TO PASS ACROSS THE WATERS MONDAY. WINDS WILL BE
GUSTY THIS TIME FRAME...ESPECIALLY BEHIND THE FRONT LATE MONDAY
AND MONDAY NIGHT.
HIGH PRESSURE PASSES JUST SOUTH TUESDAY AND WEDNESDAY AHEAD OF THE
NEXT STORM SYSTEM THAT WILL IMPACT THE WATERS WEDNESDAY NIGHT AND
THURSDAY.
SEAS REMAINS RATHER ROUGH FOR QUITE SOMETIME...ESPECIALLY OVER THE
EASTERN OCEAN WATERS...AND EASTERN LI SOUND DUE TO WESTERLY FETCH.
FOLLOWED WAVE WATCH III CLOSELY THROUGH THE PERIOD.
&&
.HYDROLOGY...
NO SIGNIFICANT RAINFALL IS EXPECTED UNTIL POSSIBLY THE LATTER PART
OF NEXT WEEK. BASIN AVG QPF WITH THE FRONT ON MON IS EXPECTED TO BE
LESS THAN 1/4 INCH.
&&
.TIDES/COASTAL FLOODING...
NEGATIVE TIDAL DEPARTURES ALREADY 1 TO 2 FT BELOW. THE STRONG WEST
WINDS WILL LIKELY RESULT IN NEGATIVE TIDAL DEPARTURES OF 2 TO 3 FT
THROUGH THE DAY TODAY. THIS WILL PUSH SOME OF THE SOUTH SHORE BACK
BAYS OF WESTERN LI...NY HARBOR...AND WESTERN LI SOUND TO LOW WATER
BENCHMARKS. A LOW WATER ADVISORY HAS BEEN ISSUED FOR THESE LOCATIONS
DURING THE TIMES OF LOW TIDE TODAY. NOT CONFIDENT FOR TONIGHT/S LOW
TIDE...SO NO PLANS TO EXTEND IT ATTM AS WINDS LIGHTEN CONSIDERABLY.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...WIND ADVISORY UNTIL 4 PM EST THIS AFTERNOON FOR CTZ005>012.
NY...WIND ADVISORY UNTIL 4 PM EST THIS AFTERNOON FOR NYZ067>081.
NJ...WIND ADVISORY UNTIL 4 PM EST THIS AFTERNOON FOR NJZ002>006-011.
MARINE...LOW WATER ADVISORY UNTIL 1 PM EST THIS AFTERNOON FOR ANZ338-
345.
GALE WARNING UNTIL 10 PM EST THIS EVENING FOR ANZ330-340-345-
350-353-355.
GALE WARNING UNTIL 6 PM EST THIS EVENING FOR ANZ335-338.
LOW WATER ADVISORY UNTIL 4 PM EST THIS AFTERNOON FOR ANZ335.
&&
$$
SYNOPSIS...
NEAR TERM...JMC
SHORT TERM...
LONG TERM...
AVIATION...GC
MARINE...JMC
HYDROLOGY...
TIDES/COASTAL FLOODING...
