Flash Flood Warning 20, NWS New York, NY

647 
WGUS51 KOKX 312325
FFWOKX
NYC103-010030-
/O.EXT.KOKX.FF.W.0020.000000T0000Z-250801T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
725 PM EDT Thu Jul 31 2025

The National Weather Service in Upton has extended the

* Flash Flood Warning for...
  Western Suffolk County in southeastern New York...

* Until 830 PM EDT.

* At 725 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. Flash flooding is ongoing.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Medford, Ronkonkoma, Patchogue, Holbrook, Sayville, Yaphank, East 
  Patchogue, Holtsville, North Bellport, Bohemia, Bayport, North 
  Patchogue, West Sayville and Blue Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4082 7315 4086 7287 4083 7284 4074 7298
      4074 7300 4073 7301 4071 7305 4072 7311
      4076 7314

FLASH FLOOD...RADAR INDICATED

$$

MW

005 
WGUS51 KOKX 010017
FFWOKX
NYC103-010130-
/O.EXT.KOKX.FF.W.0020.000000T0000Z-250801T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
817 PM EDT Thu Jul 31 2025

The National Weather Service in Upton has extended the

* Flash Flood Warning for...
  Western Suffolk County in southeastern New York...

* Until 930 PM EDT.

* At 817 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. Additional rainfall amounts of 0.5 to 1 inch are 
  possible in the warned area. Flash flooding is ongoing.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Medford, Ronkonkoma, Patchogue, Holbrook, Sayville, Yaphank, East 
  Patchogue, Holtsville, North Bellport, Bohemia, Bayport, North 
  Patchogue, West Sayville and Blue Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4082 7315 4086 7287 4083 7284 4074 7298
      4074 7300 4073 7301 4071 7305 4072 7311
      4076 7314

FLASH FLOOD...RADAR INDICATED

$$

MW

403 
WGUS71 KOKX 010115
FFSOKX

Flash Flood Statement
National Weather Service New York NY
915 PM EDT Thu Jul 31 2025

NYC103-010125-
/O.CAN.KOKX.FF.W.0020.000000T0000Z-250801T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Suffolk NY-
915 PM EDT Thu Jul 31 2025

...FLASH FLOOD WARNING IS CANCELLED FOR WESTERN SUFFOLK COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

&&

LAT...LON 4082 7315 4086 7287 4083 7284 4074 7298
      4074 7300 4073 7301 4071 7305 4072 7311
      4076 7314

$$

MW

Area Forecast Discussion
National Weather Service New York NY
325 PM EDT Thu Jul 31 2025

.SYNOPSIS...
A wave of low pressure travels along a slow moving frontal
boundary through Friday morning. High pressure builds in behind
the exiting system late Friday and remains in control through
the first half of next week. Unsettled weather may return by
late next week.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
Key Points:

* A FLOOD WATCH remains in effect for the entire area until 8am
  Friday.

* Moderate to locally heavy rainfall is possible this afternoon
  into early tonight. A widespread 1.5-3 inches of rainfall is
  likely, with locally higher amounts. Rainfall rates could
  exceed 2+ inches across parts of the area.

* A Severe Thunderstorm Watch is in effect until 8pm tonight for NYC
  and portions of northeast New Jersey.

As of 3pm a stalled frontal boundary remains draped across the
area from just south of Union County, NJ through NYC and
extending eastward across the Long Island Sound into
southeastern Connecticut, with a wave of low pressure beginning
to take shape across the Delmarva. A complex of showers and
thunderstorms has developed across northeastern New Jersey and
is pushing eastward into NYC, with additional showers/storms
along the sea breeze across Long Island.

A Flood Watch remains in effect through Friday morning, with the
heaviest rain expected to fall through around midnight. Rainfall
totals across the area will range from 1.5 to 3 inches, with
isolated amounts of up to 5 inches possible. Rainfall rates of
1-2 inches are likely across the area, and could exceed 2"/hr
across parts of Long Island, NYC, and Union, Essex, & Hudson
counties.

In addition, a Severe Thunderstorm Watch has been issued for NYC,
Essex, Union, and Hudson counties through 8pm. These areas
experienced the greatest heating earlier in the day and have been
able to build the most instability. The greatest threat with any
severe storms will be strong damaging winds.

As the evening progresses, the boundary to gradually sink south
of the region while at the same time the developing wave rides
along it to the northeast. Shower and thunderstorm chances will
gradually decrease from northwest to southeast after midnight.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/...
The front will continue to gradually sink south during the day
on Friday as the low exits to the east. Any lingering rainfall
Friday morning will come to an end, with likely only a few
lingering showers across far eastern Long Island and southeast
Connecticut by afternoon. Skies will clear through the day as
high pressure begins to build in from the northwest.

Temperatures will be noticeably cooler on Friday, with highs
only rising into the mid 70s. Under mostly clear skies,
overnight lows will range from the mid 50s in typically colder
outlying locations to the mid 60s in NYC.

&&

.LONG TERM /SATURDAY THROUGH THURSDAY/...
Surface high pressure and zonal flow aloft will result in dry
weather and seasonable temperatures through at least Tuesday.
Thereafter, an upper trough over the Midwest begins to push east
towards the region on Wednesday, with rain chances returning to
the area Wednesday night into Thursday.

Followed the NBM with little change during this period.

&&

.AVIATION /19Z THURSDAY THROUGH TUESDAY/...
A cold front slowly moves in and stalls over the region today,
before pushing just to the south tonight.

Showers/rain becomes more widespread with a TEMPO group for
TSRA. Cigs lower to MVFR with pockets of IFR vsbys in any
heavier rain or thunderstorms. IFR cigs are more likely towards
00z. Rain continues through the night with the steadiest /
heaviest rain subsiding towards 04z at most terminals. A lighter
rain prevails for the remainder of tonight and into Friday
morning.

E/NE winds 10-15 kts with gusts around 20-25 kts by 04-06Z
tonight. Winds will remain gusty through the day on Friday.

  NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...

There remains uncertainty in the timing of gusts arriving after 00z
out of the E/NE.

.OUTLOOK FOR 18Z FRIDAY THROUGH TUESDAY...

Friday: Mainly MVFR in the morning as showers end early with winds
NE10-17g25kt. VFR develops in the afternoon.

Saturday: VFR. NE winds gusts 15-20 kt early, diminishing by
afternoon.

Sunday-Tuesday: VFR.

Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90

&&

.MARINE...
A Small Craft Advisory remains in effect on all waters from this
evening through Friday evening. Winds will become ENE this
evening and increase, with gusts to around 30 kt expected on
the ocean waters and 25 kt elsewhere. Seas will also begin to
build, reaching 5 ft on the ocean by daybreak Friday. Winds will
subside Friday evening, but seas could remain elevated through
Saturday morning. Thereafter, sub-SCA conditions are expected
on all waters through early next week as high pressure remains
in control.

&&

.HYDROLOGY...
A Flood Watch remains in effect for the entire area through 8am
Friday with widespread moderate to heavy rainfall expected.
Rainfall amounts of 1.5 to 3 inches with localized amounts up to
5 inches across the southern portions of the CWA. Rainfall
rates could exceed 2+ inches per hour at times.

WPC has extended a moderate risk of excessive rainfall into all
of northeast New Jersey, NYC, and portions of the Lower Hudson
Valley and far southwest Connecticut. The rest of the area
remains in a slight risk. Urban, poor drainage and riverine
flash flooding will all be possible.

Dry weather returns Friday night with no hydrologic concerns
through early next week.

&&

.TIDES/COASTAL FLOODING...
There is an overall low rip current risk for ocean beaches today
due to a 1-3 ft S/SE swell and 1 to 2 ft wind waves. Rip
currents likely increase to high by Friday given increased
waves, 5 ft surf height, and a persistent 15-25kt E/NE flow.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...Air Quality Alert until 11 PM EDT this evening for CTZ005>012.
     Flood Watch through Friday morning for CTZ005>012.
NY...Flood Watch through Friday morning for NYZ067>075-078>081-
     176>179.
NJ...Flood Watch through Friday morning for NJZ002-004-006-103>108.
MARINE...Small Craft Advisory from 8 PM this evening to 8 PM EDT Friday
     for ANZ331-332-335-338-340-345-350-353-355.

&&

SYNOPSIS...FEB
NEAR TERM...FEB/BR
SHORT TERM...FEB
LONG TERM...FEB
AVIATION...20
MARINE...FEB
HYDROLOGY...FEB
TIDES/COASTAL FLOODING...

Hazardous Weather Outlook
National Weather Service New York NY
134 PM EDT Thu Jul 31 2025

NJZ004-103-104-011745-
Eastern Passaic-Western Bergen-Eastern Bergen-
134 PM EDT Thu Jul 31 2025

...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for northeast New Jersey.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

NJZ006-105>108-011745-
Hudson-Western Essex-Eastern Essex-Western Union-Eastern Union-
134 PM EDT Thu Jul 31 2025

...SEVERE THUNDERSTORM WATCH 562 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for northeast New Jersey.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.
   Flood Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

CTZ005>012-NJZ002-NYZ067>071-078>081-177-179-011745-
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-Western Passaic-Orange-Putnam-
Rockland-Northern Westchester-Southern Westchester-Northwest Suffolk-
Northeast Suffolk-Southwest Suffolk-Southeast Suffolk-
Northern Nassau-Southern Nassau-
134 PM EDT Thu Jul 31 2025

...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for southern Connecticut,
northeast New Jersey and southeast New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

NYZ072>075-176-178-011745-
New York (Manhattan)-Bronx-Richmond (Staten Island)-Kings (Brooklyn)-
Northern Queens-Southern Queens-
134 PM EDT Thu Jul 31 2025

...SEVERE THUNDERSTORM WATCH 562 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.
   Flood Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

ANZ331-332-335-340-345-350-353-011745-
Long Island Sound East of New Haven CT/Port Jefferson NY to the
Mouth of the Connecticut River-
Long Island Sound East of the Mouth of the Connecticut River-
Long Island Sound West of New Haven CT/Port Jefferson NY-
Peconic and Gardiners Bays-
South Shore Bays from Jones Inlet through Shinnecock Bay-
Moriches Inlet NY to Montauk Point NY out 20 nm-
Fire Island Inlet NY to Moriches Inlet NY out 20 nm-
134 PM EDT Thu Jul 31 2025

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time that would meet NWS
warning criteria.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

ANZ338-355-011745-
New York Harbor-Sandy Hook NJ to Fire Island Inlet NY out 20 nm-
134 PM EDT Thu Jul 31 2025

...SEVERE THUNDERSTORM WATCH 562 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time that would meet NWS
warning criteria.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

Preliminary Local Storm Report
National Weather Service New York NY
347 PM EDT Thu Jul 31 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0330 PM     Flash Flood      1 SE Elizabeth          40.66N 74.19W
07/31/2025                   Union              NJ   Public

            Vehicle stuck in flood waters under bridge.

&&

JMC

Preliminary Local Storm Report
National Weather Service New York NY
355 PM EDT Thu Jul 31 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0347 PM     Flash Flood      Russell Gardens         40.79N 73.73W
07/31/2025                   Nassau             NY   Public

            Video showing a street covered in feet of
            water that is spilling over onto the LIRR
            Great Neck train station platform and
            tracks.

&&

Preliminary Local Storm Report
National Weather Service New York NY
410 PM EDT Thu Jul 31 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0401 PM     Flash Flood      1 W Bayside             40.79N 73.79W
07/31/2025                   Queens             NY   Dept of Highways

            Flooding on I-295 southbound at Belt System
            - Cross Island Parkway; Throgs Neck Approach
            (New York) All lanes blocked.

&&

JMC

Preliminary Local Storm Report
National Weather Service New York NY
411 PM EDT Thu Jul 31 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0406 PM     Flash Flood      1 W Westerleigh         40.62N 74.16W
07/31/2025                   Richmond           NY   Dept of Highways

            Flooding on I-278 eastbound approaching
            Lambert Street. 2 Left lanes of 4 lanes
            closed.

&&

Preliminary Local Storm Report
National Weather Service New York NY
412 PM EDT Thu Jul 31 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0401 PM     Flash Flood      1 W Bayside             40.79N 73.79W
07/31/2025                   Queens             NY   Dept of Highways

            Flooding on I-295 southbound at Belt System
            - Cross Island Parkway; Throgs Neck
            Approach. All lanes blocked.

&&

Preliminary Local Storm Report
National Weather Service New York NY
423 PM EDT Thu Jul 31 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0415 PM     Flash Flood      1 E Greenwich Village   40.75N 73.98W
07/31/2025                   New York (ManhattanNY   Public

            Video showing significant amount of water
            falling onto a Metro North train in Grand
            Central Station.

&&