Severe Thunderstorm Warning 33, NWS New York, NY

000 
WWUS51 KOKX 042008
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE UPTON NY
408 PM EDT TUE JUL 4 2006

NYC071-079-042030-
/O.CON.KOKX.SV.W.0033.000000T0000Z-060704T2030Z/
ORANGE NY-PUTNAM NY-
408 PM EDT TUE JUL 4 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR WESTERN PUTNAM AND EAST CENTRAL ORANGE COUNTIES...

AT 403 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SMALL LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING 
DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG 
A LINE EXTENDING FROM FAHNESTOCK STATE PARK TO PUTNAM VALLEY...OR 
ALONG A LINE EXTENDING FROM 7 MILES WEST OF LAKE CARMEL TO COLD 
SPRING...MOVING SOUTHEAST AT 20 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MAHOPAC BY 420 PM.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD 
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... 
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

CONTINUOUS CLOUD TO GROUND LIGHTNING IS ALSO OCCURRING WITH THIS 
STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER 
ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE 
ENOUGH TO BE STRUCK BY LIGHTNING.

LAT...LON 4148 7413 4135 7416 4128 7374 4147 7371

$$

GOODMAN

000 
WWUS51 KOKX 042036
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE UPTON NY
436 PM EDT TUE JUL 4 2006

NYC071-079-042046-
/O.EXP.KOKX.SV.W.0033.000000T0000Z-060704T2030Z/
ORANGE NY-PUTNAM NY-
436 PM EDT TUE JUL 4 2006

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN PUTNAM AND EAST
CENTRAL ORANGE COUNTIES EXPIRED AT 430 PM EDT...

THUNDERSTORMS HAVE MOVED OUT OF THE AREA...THEREFORE THE WARNING WAS 
ALLOWED TO EXPIRE. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM. 

LAT...LON 4148 7413 4135 7416 4128 7374 4147 7371

$$

GOODMAN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE UPTON NY
255 PM EDT TUE JUL 4 2006

.NEAR TERM (REMAINDER OF TODAY THROUGH WEDNESDAY NIGHT)...
SITUATION IS GETTING INTERESTING AS A COLD FRONT AND PRE-FRONTAL
TROUGH PUSHES TOWARD THE REGION. CONVECTION ALREADY ONGOING ALONG
THESE BOUNDARIES...WILL CONTINUE TO BECOME MORE WIDESPREAD AND MORE
THREATENING AS IT MOVES EASTWARD. AS IS TYPICAL...THE MOST UNSTABLE
AIR LIES ACROSS WESTERN AND NORTHERN SECTIONS OF THE CWA. WITH A
WARM AND HUMID AIRMASS IN PLACE...APPROACHING BOUNDARIES AND FALLING
HEIGHTS ALOFT...ALL THE INGREDIENTS ARE IN PLACE. INDICES ALL
POINTING FOR SIGNIFICANT CONVECTION THROUGH THE EVENING HOURS. CAPES
OVER 2500 J/KG...LI/S TO -7...TT/S OVER 50...SHOWALTER TO -5...K
INDEX OVER 40 AND PRECIP WATERS AROUND 2 INCHES. ADD TO THAT A
240-260 STEERING FLOW AND MOST IF NOT ALL OF THE CWA SHOULD SEE
CONVECTION THROUGH THIS EVENING BEFORE THE ACTIVITY BECOMES MORE
SCATTERED ABOUT AND LESS THREATENING AFTER MIDNIGHT OR SO.
THEREFORE...WE WILL CONTINUE WITH THE LIKELY POPS...TAPERING TO A
CHANCE AFTER MIDNIGHT. A SEVERE THUNDERSTORM WATCH HAS ALREADY BEEN
ISSUED AND IS IN EFFECT FOR THE ENTIRE CWA INCLUDING MARINE ZONES
UNTIL 900 PM THIS EVENING. THE MAIN THREATS WILL BE DAMAGING
WINDS...HEAVY RAIN AND TO A LESSOR DEGREE HAIL.

THE FRONTAL BOUNDARY WILL SLOW TO A CRAWL AS IT TRIES TO TRAVERSE
THE TRI-STATE REGION LATE TONIGHT THROUGH WEDNESDAY NIGHT. BY LATE
IN THE DAY WEDNESDAY...A WAVE OF LOW PRESSURE IS EXPECTED TO DEVELOP
ALONG THE FRONT AND START TO RIDE NORTHEAST ALONG THE BOUNDARY. THIS
WILL KEEP THE THREAT OF SHOWERS AND THUNDERSTORMS IN THE FORECAST
THROUGHOUT THE DAY WEDNESDAY AND WEDNESDAY NIGHT. WE MAY HAVE TO
WORRY ABOUT FLOODING IF THIS PANS OUT...AS THE FRONTAL BOUNDARY IS
EXPECTED TO BE CLOSELY ALIGNED TO THE MID LEVEL STEERING
FLOW...TRAINING OF ECHOES IS LIKELY AND THUS SOME FLOODING ISSUES
MAY ARISE. HOWEVER IF THE LATEST COMPUTER MODELS PAN OUT...THE AXIS
OF THE HEAVIEST PRECIPITATION IS EXPECTED TO LIE JUST OFFSHORE...
ESPECIALLY WEDNESDAY NIGHT AS THE SURFACE WAVE MOVES ON BY.

TEMPERATURES SHOULD AVERAGE A FEW DEGREES ABOVE NORMAL
TONIGHT...NEAR NORMAL WEDNESDAY...THEN A FEW DEGREES BELOW NORMAL
WEDNESDAY NIGHT.
&&

.SHORT TERM (THURSDAY THROUGH FRIDAY)...
THE FRONT IS EXPECT TO DRIFT OFFSHORE EARLY THURSDAY WITH POSSIBLY
SOME CONVECTION LINGERING ACROSS THE FAR EASTERN ZONES EARLY ON IT
THE DAY. THEN...HIGH PRESSURE WITH ITS COOLER AND DRIER AIR...WILL
START TO BUILD IN AND DOMINATE THE REST OF THE SHORT TERM.

TEMPERATURES SHOULD CONTINUE TO AVERAGE A FEW DEGREES BELOW NORMAL
THURSDAY AND THURSDAY NIGHT...RECOVERING TO NEAR NORMAL LEVELS BY
FRIDAY.
&&

.LONG TERM (FRIDAY NIGHT THROUGH TUESDAY)...
LOOKS TO BE DRY AND INITIALLY LESS HUMID AT THE START OF THE
PERIOD.  THE UPPER TROUGH ALONG THE EASTERN SEABOARD ON FRI SHIFTS
OFFSHORE WITH BUILDING HEIGHTS TO FOLLOW AS THE UPPER RIDGE OVER THE
NATIONS MID SECTION TRANSLATES EWD. A LARGE DOME OF HIGH PRESSURE
EAST OF THE PLAINS STATES WILL BUILD EASTWARD IN TANDEM WITH THE
UPPER RIDGE. THIS WILL RESULT IN A DEEP-LAYERED WNW FLOW FRI INTO
SAT. SHORT WAVE ENERGY RIDING OVER TOP THE UPPER RIDGE BEGINS TO
WEAKEN THE NORTHERN EXTENT OF THE RIDGE AS A COLD FRONT DROPS
SOUTHEAST ACROSS EASTERN CANADA LATE IN THE WEEKEND AND INTO THE
NORTHEAST MON AND TUE. AT THE SAME TIME...SURFACE HIGH PRESSURE
MOVES OFFSHORE WITH A RETURN FLOW RE-ESTABLISHED. THUS...
INCREASINGLY HUMID AND LESS STABLE EARLY NEXT WEEK WITH RAIN CHANCES
GRADUALLY INCREASING AS A COLD FRONT APPROACHES FROM THE NORTHWEST.
TEMPERATURES WILL START OFF NEAR SEASONABLE LEVELS...BUT THEN BEGIN
TO WARM THROUGH THE WEEKEND.
&&

.AVIATION...
PRE-FRONTAL TROUGH IGNITING A LINEAR MCS ACROSS EASTERN PA...JUST
ABOUT TO CROSS OVER INTO NJ AND THE LOWER HUDSON VALLEY OF NY. HIGH
CAPE ENVIRONMENT AND MARGINAL 0-6KM SHEAR HAS LED TO A SEVERE
THUNDERSTORM WATCH ACROSS THE ENTIRE METRO AREA...WITH LARGE HAIL
AND DAMAGING WINDS THE MAIN THREAT. TIMING OF LINE BRINGS IT INTO
THE KSWF/KMGJ AROUND 19Z...NYC METRO 20Z TO 21Z...AND KISP/KBDR 22Z
TO 23Z. AIRMASS VERY UNSTABLE EVEN ALONG THE COAST...SO THERE IS A
GOOD CHANCE THE CONVECTION MAKES IT OUT ACROSS WESTERN LONG ISLAND
AND SOUTHERN CT BEFORE WEAKENING DUE TO THE MARITIME INFLUENCE.
SHOULD THE LINE HOLD TOGETHER...IT WOULD BE NEAR KGON AT 23Z.
THEREAFTER... PLENTY OF CONVECTIVE DEBRIS WITH MVFR VSBYS IN
FOG/HAZE. WINDS VEER AROUND TO THE W/NW OVERNIGHT AND THEN BACK TO
THE S/SW ON WED.
&&

.MARINE...
SW FLOW WILL INCREASE TO NEAR 15 KT LATE THIS AFTERNOON AND EARLY
THIS EVENING ON THE OCEAN...AS A COLD FRONT APPROACHES FROM THE WEST
AND THE PRESSURE GRADIENT INCREASES SLIGHTLY. STRONG AND EVEN A FEW
SEVERE TSTMS WILL BE A THREAT THROUGH WED NIGHT...WITH THE GREATEST
CHANCES THIS AFTERNOON AND EVENING...AND AGAIN LATE WED AFTERNOON
THROUGH WED NIGHT.

FOR SEAS...HAVE GONE AT LEAST A FOOT LOWER THAN 12Z WNA WAVEWATCH
GUIDANCE WHICH CONTINUES TO BE OVERDONE. SEAS SHOULD MAX OUT AT 4 FT
OVER THE EASTERN OCEAN WATERS FOR A TIME TONIGHT...AND AGAIN LATE
WED NIGHT INTO THU.

FLOW SHIFTS OFFSHORE LATE WED NIGHT AND THU AS A COLD FRONT FINALLY
IS ABLE TO MOVE THROUGH THE AREA WITHOUT WASHING OUT. OTHER THAN A
FEW GUSTS JUST BELOW SCA CRITERIA RIGHT AFTER FROPA WED NIGHT AND
THU MORNING...QUIET CONDITIONS SHOULD CONTINUE.
&&

.HYDROLOGY...
A SERIES OF DISTURBANCES MOVING THROUGH THE AREA WILL KEEP AT LEAST
A CHANCE OF SHOWERS AND/OR THUNDERSTORMS IN THE FORECAST THROUGH THE
NEAR AND SHORT TERM. THE BEST CHANCE FOR ANY SIGNIFICANT AND/OR
WIDESPREAD RAINFALL WILL BE LATE THIS AFTERNOON INTO THIS EVENING
AND THEN ONCE AGAIN FROM LATE WEDNESDAY AFTERNOON INTO WEDNESDAY
NIGHT. TRAINING OF THUNDERSTORMS WILL BE A CONCERN WEDNESDAY NIGHT
AS THE FRONTAL BOUNDARY WILL LIE NEARLY PARALLEL TO THE 500-700 HPA
STEERING FLOW.
&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...SEVERE THUNDERSTORM WATCH UNTIL 900 PM ALL ZONES.
NJ...SEVERE THUNDERSTORM WATCH UNTIL 900 PM ALL ZONES.
NY...SEVERE THUNDERSTORM WATCH UNTIL 900 PM ALL ZONES.
MARINE...SEVERE THUNDERSTORM WATCH UNTIL 900 PM ALL ZONES.

&&

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE UPTON NY
105 PM EDT TUE JUL 4 2006

CTZ005>012-NJZ002>006-011-NYZ067>081-051000-
NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN MIDDLESEX-
NORTHERN NEW LONDON-SOUTHERN FAIRFIELD-SOUTHERN NEW HAVEN-
SOUTHERN MIDDLESEX-SOUTHERN NEW LONDON-WESTERN PASSAIC-BERGEN-
EASTERN PASSAIC-ESSEX-HUDSON-UNION-ORANGE-PUTNAM-ROCKLAND-
NORTHERN WESTCHESTER-SOUTHERN WESTCHESTER-NEW YORK (MANHATTAN)-
BRONX-RICHMOND (STATEN ISLAND)-KINGS (BROOKLYN)-QUEENS-NASSAU-
NORTHWESTERN SUFFOLK-NORTHEASTERN SUFFOLK-SOUTHWESTERN SUFFOLK-
SOUTHEASTERN SUFFOLK-
105 PM EDT TUE JUL 4 2006

...SEVERE THUNDERSTORM WATCH 582 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN
CONNECTICUT...NORTHEAST NEW JERSEY AND SOUTHEAST NEW YORK.

.DAY ONE...THIS AFTERNOON AND TONIGHT
A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM. THE THREATS FROM
THESE STORMS WILL BE DANGEROUS CLOUD TO GROUND LIGHTNING...DAMAGING
WINDS...LARGE HAIL AND POSSIBLY FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
STRONG THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE THROUGH WEDNESDAY
NIGHT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON INTO THIS
EVENING.

ANZ330-335-338-350-353-355-051000-
LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY-
LONG ISLAND SOUND WEST OF NEW HAVEN CT/PORT JEFFERSON NY-
NEW YORK HARBOR-MORICHES INLET NY TO MONTAUK POINT NY OUT 20 NM-
FIRE ISLAND INLET NY TO MORICHES INLET NY OUT 20 NM-
SANDY HOOK NJ TO FIRE ISLAND INLET NY OUT 20 NM-
105 PM EDT TUE JUL 4 2006

...SEVERE THUNDERSTORM WATCH 582 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF ATLANTIC
COASTAL WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT
A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM. THE THREATS FROM
THESE STORMS WILL BE DANGEROUS CLOUD TO WATER LIGHTNING...DAMAGING
WINDS...LARGE HAIL AND TORRENTIAL DOWNPOURS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
STRONG THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE THROUGH
WEDNESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON INTO THIS
EVENING.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE UPTON NY
1218 PM EDT TUE JUL 4 2006

CTZ005>012-NJZ002>006-011-NYZ067>081-050200-
NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN MIDDLESEX-
NORTHERN NEW LONDON-SOUTHERN FAIRFIELD-SOUTHERN NEW HAVEN-
SOUTHERN MIDDLESEX-SOUTHERN NEW LONDON-WESTERN PASSAIC-BERGEN-
EASTERN PASSAIC-ESSEX-HUDSON-UNION-ORANGE-PUTNAM-ROCKLAND-
NORTHERN WESTCHESTER-SOUTHERN WESTCHESTER-NEW YORK (MANHATTAN)-
BRONX-RICHMOND (STATEN ISLAND)-KINGS (BROOKLYN)-QUEENS-NASSAU-
NORTHWESTERN SUFFOLK-NORTHEASTERN SUFFOLK-SOUTHWESTERN SUFFOLK-
SOUTHEASTERN SUFFOLK-
1218 PM EDT TUE JUL 4 2006

...THUNDERSTORMS LIKELY THIS AFTERNOON THROUGH THIS EVENING WITH
SOME POSSIBLY SEVERE...

A VERY WARM...HUMID AND UNSTABLE AIRMASS REMAINS IN PLACE ACROSS THE
TRI-STATE REGION. SUCH CONDITIONS FAVOR THE RAPID DEVELOPMENT OF
SHOWERS AND THUNDERSTORMS. WITH A COLD FRONT APPROACHING FROM THE
WEST...THESE STORMS WILL FORM INTO LINES OR CLUSTERS AHEAD OF THIS
FEATURE. LATER THIS AFTERNOON AND THIS EVENING WILL LIKELY BE THE
TIME WHEN THE COVERAGE OF THESE STORMS WHICH REACH THEIR PEAK. THE
STORM PREDICTION CENTER HAS PLACED A LARGE PORTION OF THE
TRI-STATE REGION UNDER A SLIGHT RISK OF SEVERE THUNDERSTORMS.
ALTHOUGH DAMAGING WINDS APPEAR TO BE THE MAIN THREAT...HAIL IS A
POSSIBILITY.

VERY HEAVY RAIN IS LIKELY TO ACCOMPANY MANY OF THESE STORMS. THE
HEAVY DOWNPOURS WILL LIKELY RESULT IN AT LEAST LOCALIZED FLOODING
PROBLEMS OF POOR DRAINAGE AREAS AND ALONG ROADWAYS. SOME STREAMS...
ESPECIALLY THE SMALLER ONES...MAY EXPERIENCE QUICK RISES DUE TO THE
HEAVY RAIN AND ITS RUNOFF...SO RESIDENTS LIVING ALONG SOME OF THESE
FLASHIER STREAMS SHOULD BE PREPARED TO HEAD TO HIGHER GROUND IF
NECESSARY.

IN ADDITION AND CERTAINLY NOT LEAST...DANGEROUS CLOUD TO GROUND
LIGHTNING WILL ALSO BE A THREAT. WITH SO MANY OUTDOOR ACTIVITIES
PLANNED FOR THE HOLIDAY...IT IS IMPERATIVE TO STAY ALERT TO THE
PRESENCE OF ANY THUNDERSTORMS. MAKE SURE TO SEEK SHELTER AT THE
FIRST SIGN OF THREATENING WEATHER. THIS IS ESPECIALLY TRUE FOR
BOATERS THAT WILL NEED EXTRA TIME TO SEEK SAFE HARBOR AND FOR THE
LARGE CROWDS THAT ARE EXPECTED TO ATTEND THE VARIOUS FIREWORK
DISPLAYS THIS EVENING.

ALSO WITH THE HEAT AND HUMIDITY...MAKE SURE TO DRESS APPROPRIATELY...
DRINK PLENTY OF WATER...STAY IN AN AIR CONDITIONED ROOM IF POSSIBLE
AND AVOID PROLONGED EXPOSURE TO THE SUN. REMEMBER ALSO THAT PETS
REQUIRE SPECIAL ATTENTION WHEN HEAT AND HUMIDITY LEVELS CLIMB.

STAY TUNED TO NOAA ALL HAZARDS WEATHER RADIO OR VISIT OUR WEB SITE
AT WEATHER.GOV/NYC FOR FURTHER DETAILS AND UPDATES.