Alert archive / New York / Flash Flood Warnings in 2024

Flash Flood Warning 28, NWS New York, NY

August 19, 2024Suffolk County, New York

NWS New York, NY issued this flash flood warning at Aug 19, 2024, 1:20 AM EDT for Suffolk County, New York. It was in force for 3 hr. 29 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 19, 2024, 1:20 AM EDT (05:20 UTC)
Expired
Aug 19, 2024, 4:30 AM EDT
In force
3 hr
Issued by
NWS New York, NY
Area
Storm-based polygon
Emergency
Flash flood emergency
Damage threat
Catastrophic
Flood severity
None

County Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 32 km from the middle of the area, began a volume at 05:23 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Aug 19, 1:35 AM EDTFLASH FLOODPort Jefferson, NYFlowing flood waters on high street that is beginning to enter homes.
Aug 19, 1:35 AM EDTFLASH FLOODPort Jefferson, NYFlowing flood waters on high street that is beginning to enter homes.
Aug 19, 1:40 AM EDTFLASH FLOODPort Jefferson, NYSmall landslide reported at the Bell Harbour Mews Apartments with flood waters continue to rise.
Aug 19, 1:40 AM EDTFLASH FLOODPort Jefferson, NYSmall landslide reported at the Bell Harbour Mews Apartments with flood waters continue to rise.
Aug 19, 1:48 AM EDTFLASH FLOOD1 Se Port Jefferson, NYFire Department closing Edgewood Ave due to rising flood waters. Road is impassable.
Aug 19, 1:48 AM EDTFLASH FLOOD1 Se Port Jefferson, NYFire Department closing Edgewood Ave due to rising flood waters. Road is impassable.
Aug 19, 1:50 AM EDTFLASH FLOOD1 Wsw Centereach, NYBasement flooding with Fire Department responding to the home.
Aug 19, 1:50 AM EDTFLASH FLOOD1 Wsw Centereach, NYBasement flooding with Fire Department responding to the home.
Aug 19, 1:55 AM EDTFLASH FLOOD1 S Saint James, NYWater up to hood of car stuck in flood waters on Middle Country Road at Hobson Ave. Occupants are out of the vehicle.
Aug 19, 1:55 AM EDTFLASH FLOOD1 S Saint James, NYWater up to hood of car stuck in flood waters on Middle Country Road at Hobson Ave. Occupants are out of the vehicle.
Aug 19, 2:00 AM EDTFLASH FLOOD1 Nw Setauket-East Seta, NYWater rescue on North Country Road at Ridgeway Ave.
Aug 19, 2:00 AM EDTFLASH FLOOD1 Nw Setauket-East Seta, NYWater rescue on North Country Road at Ridgeway Ave.
Aug 19, 2:22 AM EDTFLASH FLOOD1 Ssw Dix Hills, NYVehicle stranded in flood waters at Deer Park Ave just south of I-495.
Aug 19, 2:22 AM EDTFLASH FLOOD1 Ssw Dix Hills, NYVehicle stranded in flood waters at Deer Park Ave just south of I-495.
Aug 19, 2:22 AM EDTFLASH FLOODSaint James, NYSeveral feet of flood waters covering 2nd Ave at 7th street. Road impassable.
Aug 19, 2:22 AM EDTFLASH FLOODSaint James, NYSeveral feet of flood waters covering 2nd Ave at 7th street. Road impassable.
Aug 19, 2:26 AM EDTFLASH FLOOD1 Wsw Dix Hills, NYWater rescue on Tiana Place at Memas Court.
Aug 19, 2:26 AM EDTFLASH FLOOD1 Wsw Dix Hills, NYWater rescue on Tiana Place at Memas Court.
Aug 19, 2:30 AM EDTFLASH FLOOD1 E Dix Hills, NYLong Island Expressway (I-495) is closed between Exit 52 and Exit 51 westbound due to flooding. NY State called to assist with pumping water.
Aug 19, 2:30 AM EDTFLASH FLOOD1 E Dix Hills, NYLong Island Expressway (I-495) is closed between Exit 52 and Exit 51 westbound due to flooding. NY State called to assist with pumping water.
Aug 19, 2:30 AM EDTFLASH FLOODSmithtown, NYThe Nissequoque River dam broke around 9:30 am due to the flash flooding causing the entire Blydenburgh Pond to empty into the Nissequogue River. The river overflowed its banks sending water into homes and onto nearby streets. Two residents were trapped on the
Aug 19, 2:32 AM EDTFLASH FLOOD1 Se Miller Place, NYWater rescue on Miller Place-Yaphank Road.
Aug 19, 2:32 AM EDTFLASH FLOOD1 Se Miller Place, NYWater rescue on Miller Place-Yaphank Road.
Aug 19, 2:50 AM EDTFLASH FLOOD1 E Head Of The Harbor, NYWater rescue on NY 25A at Mill Pond Road.
Aug 19, 2:50 AM EDTFLASH FLOOD1 E Head Of The Harbor, NYWater rescue on NY 25A at Mill Pond Road.
Aug 19, 2:50 AM EDTFLASH FLOOD1 E Smithtown, NYMultiple homes with basement flooding across NW Suffolk County within the cities of Commack, Smithtown, St James, Centereach, Setauket, Selden, Coram, Port Jefferson, and Rocky Point.
Aug 19, 2:50 AM EDTFLASH FLOOD1 E Smithtown, NYMultiple homes with basement flooding across NW Suffolk County within the cities of Commack, Smithtown, St James, Centereach, Setauket, Selden, Coram, Port Jefferson, and Rocky Point.
Aug 19, 2:57 AM EDTFLASH FLOOD1 Sse Saint James, NYCar stuck in flood waters with occupant on roof of car on Middle Country Road at White Ave. Fire department responding.
Aug 19, 2:57 AM EDTFLASH FLOOD1 Sse Saint James, NYCar stuck in flood waters with occupant on roof of car on Middle Country Road at White Ave. Fire department responding.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 16 storm reports to this flash flood warning; the first came 15 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 5.3 hours before the alert went out and 32 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2024-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 630 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2024-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 239 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
630 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
239 m²/s²
0-3 km storm-relative helicity
233 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.2

Open this sounding in Storm Lab

The text

As transmitted.

761 
WGUS51 KOKX 190520
FFWOKX
NYC103-190830-
/O.NEW.KOKX.FF.W.0028.240819T0520Z-240819T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
120 AM EDT Mon Aug 19 2024

...FLASH FLOOD EMERGENCY FOR NORTHWESTERN SUFFOLK COUNTY...

The National Weather Service in Upton has issued a

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

* Until 430 AM EDT.

* At 120 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 4 and 6 inches of rain 
  have fallen. The expected rainfall rate is 2 to 3 inches in 1 
  hour. Additional rainfall amounts of 2 to 4 inches are possible in 
  the warned area. Flash flooding is ongoing or expected.

  This is a FLASH FLOOD EMERGENCY for Northwestern Suffolk County. 
  This is a PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...This is a PARTICULARLY DANGEROUS SITUATION. SEEK
           HIGHER GROUND NOW! Life threatening flash flooding of
           basements, low water crossings, small creeks and
           streams, urban areas, highways, streets and
           underpasses.

* Some locations that will experience flash flooding include...
  Brentwood, Commack, Huntington Station, Centereach, Deer Park, 
  Hauppauge, Ronkonkoma, Huntington, Stony Brook, Middle Island, 
  Port Jefferson, Wading River, Northport, Coram, Dix Hills, 
  Smithtown, Melville, Farmingville, Rocky Point and Mount Sinai.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now! This is an extremely dangerous and 
life-threatening situation. Do not attempt to travel unless you are 
fleeing an area subject to flooding or under an evacuation order.

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

If you are in a basement, move to a higher floor now.

&&

LAT...LON 4094 7334 4095 7329 4092 7321 4093 7317
      4097 7317 4099 7312 4098 7305 4099 7279
      4092 7278 4069 7343 4087 7346 4087 7348
      4091 7351 4095 7336

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CATASTROPHIC
EXPECTED RAINFALL RATE...2-3 INCHES IN 1 HOUR

$$

NV
2 follow-up statements
224 
WGUS71 KOKX 190717
FFSOKX

Flash Flood Statement
National Weather Service New York NY
317 AM EDT Mon Aug 19 2024

NYC103-190830-
/O.CON.KOKX.FF.W.0028.000000T0000Z-240819T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Suffolk NY-
317 AM EDT Mon Aug 19 2024

...FLASH FLOOD EMERGENCY FOR NORTHWESTERN SUFFOLK COUNTY...

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 AM EDT EARLY THIS 
MORNING FOR WEST CENTRAL SUFFOLK COUNTY...

At 317 AM EDT, The heavy rainfall has moved east of the warned area. 
Doppler radar indicated thunderstorms produced between 6 and 10 
inches of rainfall across the area since 9 pm, with hourly rainfall 
rates as high as 3 to 4 inches per hour. Significant and widespread 
flood impacts have been reported, and will continue overnight.

This is a FLASH FLOOD EMERGENCY for Northwestern Suffolk County. 
This is a PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!

HAZARD...Life threatening flash flooding.

SOURCE...Radar.

IMPACT...This is a PARTICULARLY DANGEROUS SITUATION. Life
         threatening flash flooding of basements, low water
         crossings, small creeks and streams, urban areas,
         highways, streets and underpasses is occurring.

Some locations that will experience flash flooding include...
  Brentwood, Commack, Huntington Station, Centereach, Deer Park, 
  Hauppauge, Ronkonkoma, Huntington, Stony Brook, Middle Island, 
  Port Jefferson, Wading River, Northport, Coram, Dix Hills, 
  Smithtown, Melville, Farmingville, Rocky Point and Mount Sinai.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is an extremely dangerous and life-threatening situation. Do 
not attempt to travel unless you are fleeing an area subject to 
flooding or under an evacuation order.

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.

If you are in a basement, be prepared to move to a higher floor.

&&

LAT...LON 4094 7334 4095 7329 4092 7321 4093 7317
      4097 7317 4099 7312 4098 7305 4099 7279
      4092 7278 4069 7343 4087 7346 4087 7348
      4091 7351 4095 7336

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CATASTROPHIC

$$

NV
185 
WGUS71 KOKX 190833
FFSOKX

Flash Flood Statement
National Weather Service New York NY
433 AM EDT Mon Aug 19 2024

NYC103-190843-
/O.EXP.KOKX.FF.W.0028.000000T0000Z-240819T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Suffolk NY-
433 AM EDT Mon Aug 19 2024

...FLASH FLOOD WARNING HAS EXPIRED FOR WEST CENTRAL SUFFOLK COUNTY...

The heavy rain has ended. Between 6 and 10 inches of rainfall fell 
across the area overnight. Significant and widespread flood impacts 
have been reported, and will likely linger into the morning commute.


&&

LAT...LON 4094 7334 4095 7329 4092 7321 4093 7317
      4097 7317 4099 7312 4098 7305 4099 7279
      4092 7278 4069 7343 4087 7346 4087 7348
      4091 7351 4095 7336

$$

NV

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New York, NY wrote its last area forecast discussion before this flash flood warning went out at Aug 18, 10:12 PM EDT, 3 hours 8 minutes earlier.

Area forecast discussion, Aug 18, 10:12 PM EDT, 3 hours 8 minutes before
Area Forecast Discussion
National Weather Service New York NY
1012 PM EDT Sun Aug 18 2024

.SYNOPSIS...
A frontal system with its associated low pressure center continues
to approach the area tonight. The central low moves slowly
within the region Monday, shifting east of the area by early
Monday evening. The frontal system continues to shift east of
the region Monday night into Tuesday morning. High pressure
builds in thereafter through the remainder of the week.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
A slow moving frontal system continues to move across the area.
Earlier mesolow has weakened and lifted NE of CT. There is
likely another weak low that has formed nearby to the NYC metro
as winds have gone NE there, which occurred from strong
convection that has now moved into western LI.

The Severe Thunderstorm Watch has been cancelled as the threat
has now transitioned to a continued heavy rain threat into the
overnight. No changes were made to the watch.

Several reports of rainfall rates of 3-3.5"/hr in NE NJ which
has caused widespread, significant flooding. This area has moved
eastward fairly quickly and is now producing 1-2"/hr. Will be
continuing to monitor rainfall trends in CT as the areas in
Fairfield and New Haven do not need much rain to cause more
problems.

There will likely be additional showers overnight, but the heavy
rain threat should become a bit more localized with an overall
slow weakening trend into the early morning hours as activity
progresses eastward.

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/...
Mid level trough continues to approach with its axis arriving within
the region by early Tuesday. About another 30 meter drop with the
500mb height is expected within the region. Once again, multiple
areas of higher positive vorticity advection move across the area
for Monday and Monday night. Vertical forcing will remain in place
to easily allow for the development of showers.

The numerical weather prediction models convey low pressure
passing east of the area early Monday, followed by a cold front
slowly moving across for afternoon into early evening. They are
coherent in their model solutions showing the low pressure
moving east of the area Monday night.

The rain on Monday could very well be more intermittent with more
lulls in the activity. However, thinking here that numerous
showers will pop up and develop throughout the afternoon with a
lingering frontal boundary acting as a focus for low level
convergence. Although the axis of higher precipitable waters is
forecast to be more east of the region, heavy rain will still be
possible at times.

Regarding thunderstorms, low level CAPE forecast to be more, up to
near or a little above 1000 J/kg, so more potential. Will
include chance of thunderstorms. Enough factors to have more
than just slight chance or isolated thunderstorms. Lowering
chances for showers and thunderstorms Monday night, mainly dry
overnight into early Tuesday morning.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
After a secondary frontal passage, any residual showers across S CT
and Long Island should end in the morning. This will set the stage
for drier and cooler conditions to take hold into midweek. Behind
the fropa, high temps on Tuesday could be some of the coolest since
late May, generally in the upper 60s to mid 70s.

The drier, cooler pattern will continue into mid week behind the
frontal system as dry air advects south, with surface high pressure
building in. Lingering upper trough over the Northeast may persist
into late week, reinforced by a closed low dropping south out of
Canada.

This high will be accompanied with primarily N-NW winds and a much
cooler regime. Highs temps Wed will be in the 70s, with low temps
Wed AM and Thu AM in the 50s to near 60. Some interior spots as well
as in the Long Island Pine Barrens could bottom out in the upper 40s
by daybreak Thu depending on the strength of any radiational
cooling. Temperatures will gradually moderate into late week and the
weekend with highs reaching the upper 70s to lower 80s by Fri, and
well into the 80s next weekend.

&&

.AVIATION /02Z MONDAY THROUGH FRIDAY/...
A frontal system slowly moves across the terminals through
Monday evening.

Showers and thunderstorms are expected into tonight. Flight
categories will fluctuate from MVFR to IFR through tonight and
there could be some periods of brief VFR. The bulk of the
showers/thunderstorms should push east of the NYC metro after
midnight. Showers should begin tapering off early Monday
morning, but could linger across southeast CT.

Conditions should improve to VFR late Monday morning into Monday
afternoon with the potential of another round of showers and
thunderstorms late afternoon and evening.

Winds will mainly be S to SE through tonight, but a period of NE
winds is expected through 06z at NYC terminals. Winds begin to
shift toward the SW during Monday morning. Winds shift to the W
and NW behind the cold front passage Monday evening.

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

Amendments likely for both showers/thunderstorms and for flight
categories tonight.

Winds may be variable for several hours through around 06z.

Timing of showers and thunderstorms Monday afternoon/evening may
be off by 1-3 hours.

OUTLOOK FOR 00Z TUESDAY THROUGH FRIDAY...

Monday Night: Scattered showers and thunderstorms ending in the
evening. VFR.

Tuesday: Mainly VFR. A chance of showers, mainly in the
morning, with MVFR possible. NW wind gusts 15-20 kt.

Wednesday-Friday: VFR.

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

&&

.MARINE...
Rough ocean seas and long period swells remain through tonight
and into Monday. Seas decrease more Monday afternoon into Monday
night. SCA for ocean remains in effect for the ocean through
Monday night.

Winds are expected to remain below SCA thresholds outside of
thunderstorms. Non-ocean zones are expected to remain below SCA
thresholds for winds and seas through Monday night.

The rough ocean seas and long period swells come from distant
tropical cyclone Ernesto as it passes well northeast of the
area in the open Atlantic. This is also leading to rough
conditions around inlets. Please refer to the National Hurricane
Center for official forecasts regarding Ernesto.

Thereafter, elevated wave heights on the ocean zones will allow
for SCA conditions to possibly continue into the day on
Tuesday. By Late Tuesday, wind diminish and wave heights should
fall below 5 feet. Sub-SCA conditions are then expected with
high pressure moving into the area by midweek.

&&

.HYDROLOGY...
Additional locally heavy rainfall is possible tonight.
Widespread flooding continues across portions of Fairfield and
New Haven Counties in CT and urban NE NJ. Rivers and streams may
still exceed bankfull in these areas into the overnight.

Additional rain Monday into Monday night looks to be more
localized, with just a marginal flash flood threat. Otherwise,
minor flooding in low lying and poor drainage areas.

No hydrologic concerns expected thereafter Tuesday through next
weekend.

&&

.TIDES/COASTAL FLOODING...
A high rip current risk is in place through Monday due to elevated,
long period swells from Ernesto.

Ocean seas are forecast to be highest through Monday, and with surf
heights up to 6 ft, local beach erosion is possible.

A full moon on Monday as well as swell from distant Ernesto will
also elevate total water levels this week. Have continued the
advisory for the Western Sound along the southwest CT and S
Westchester coast for this evening's high tide.

Additional minor flooding is possible with the high tide cycles
(especially the evening/nighttime cycles) through much of this week.
Additional advisories/statements will likely be needed.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...Flood Watch until 2 AM EDT Monday for CTZ005-006-009-010.
     Coastal Flood Advisory until 1 AM EDT Monday for CTZ009.
NY...Flood Watch until 2 AM EDT Monday for NYZ067>071.
     Coastal Flood Advisory until 1 AM EDT Monday for NYZ071.
     High Risk for Rip Currents through Monday evening for NYZ075-080-
     081-178-179.
NJ...Flood Watch until 2 AM EDT Monday for NJZ002-004-006-103>108.
MARINE...Small Craft Advisory until 6 AM EDT Tuesday for ANZ350-353-355.

&&

SYNOPSIS...BG/JM
NEAR TERM...DS
SHORT TERM...JM
LONG TERM...BG
AVIATION...DS
MARINE...BG/JM
HYDROLOGY...BG/JM
TIDES/COASTAL FLOODING...
Hazardous weather outlook, Aug 18, 10:09 PM EDT, 3 hours 11 minutes before
Hazardous Weather Outlook
National Weather Service New York NY
1009 PM EDT Sun Aug 18 2024

NJZ002-004-006-103>108-NYZ067-069-200215-
Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-
Western Essex-Eastern Essex-Western Union-Eastern Union-Orange-
Rockland-
1009 PM EDT Sun Aug 18 2024

...FLOOD WATCH REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY...

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

.DAY ONE...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...Monday through Saturday.

Hazardous weather is not expected at this time that would meet NWS
warning criteria.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

&&

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.

NYZ080-081-200215-
Southwest Suffolk-Southeast Suffolk-
1009 PM EDT Sun Aug 18 2024

...HIGH RIP CURRENT RISK IN EFFECT THROUGH MONDAY EVENING...

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...Tonight.

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

   High Rip Current Risk.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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

   High Rip Current Risk.

.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.

CTZ007-008-011-012-NYZ078-079-200215-
Northern Middlesex-Northern New London-Southern Middlesex-
Southern New London-Northwest Suffolk-Northeast Suffolk-
1009 PM EDT Sun Aug 18 2024

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

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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.

CTZ010-200215-
Southern New Haven-
1009 PM EDT Sun Aug 18 2024

...FLOOD WATCH IN EFFECT UNTIL 2 AM EDT MONDAY...

This Hazardous Weather Outlook is for southern Connecticut.

.DAY ONE...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...Monday through Saturday.

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.

ANZ331-332-335-338-340-345-350-353-355-200215-
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-
New York Harbor-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-
Sandy Hook NJ to Fire Island Inlet NY out 20 nm-
1009 PM EDT Sun Aug 18 2024

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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.

NYZ068-070-200215-
Putnam-Northern Westchester-
1009 PM EDT Sun Aug 18 2024

...FLOOD WATCH IN EFFECT UNTIL 2 AM EDT MONDAY...

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...Tonight.

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

   Flood Watch.

Isolated to scattered instances of flash flooding are possible
today and tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Hazardous weather is not 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.

CTZ009-NYZ071-200215-
Southern Fairfield-Southern Westchester-
1009 PM EDT Sun Aug 18 2024

...FLOOD WATCH IN EFFECT UNTIL 2 AM EDT MONDAY...
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 1 AM EDT MONDAY...

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

.DAY ONE...Tonight.

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

   Flood Watch.
   Coastal Flood Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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.

NYZ072>074-176-177-200215-
New York (Manhattan)-Bronx-Richmond (Staten Island)-Northern Queens-
Northern Nassau-
1009 PM EDT Sun Aug 18 2024

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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.

NYZ075-178-200215-
Kings (Brooklyn)-Southern Queens-
1009 PM EDT Sun Aug 18 2024

...HIGH RIP CURRENT RISK IN EFFECT THROUGH MONDAY EVENING...

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...Tonight.

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

   High Rip Current Risk.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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

   High Rip Current Risk.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

&&

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.

NYZ179-200215-
Southern Nassau-
1009 PM EDT Sun Aug 18 2024

...HIGH RIP CURRENT RISK IN EFFECT THROUGH MONDAY EVENING...

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...Tonight.

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

   High Rip Current Risk.

Isolated to scattered instances of flash flooding are possible
today and tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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

   High Rip Current Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

&&

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.

CTZ006-200215-
Northern New Haven-
1009 PM EDT Sun Aug 18 2024

...FLOOD WATCH IN EFFECT UNTIL 2 AM EDT MONDAY...

This Hazardous Weather Outlook is for southern Connecticut.

.DAY ONE...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...Monday through Saturday.

Hazardous weather is not 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.

CTZ005-200215-
Northern Fairfield-
1009 PM EDT Sun Aug 18 2024

...FLOOD WATCH IN EFFECT UNTIL 2 AM EDT MONDAY...

This Hazardous Weather Outlook is for southern Connecticut.

.DAY ONE...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...Monday through Saturday.

Hazardous weather is not 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.

In the hours before

Local storm report, Aug 19, 12:46 AM EDT, 34 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
1246 AM EDT Mon Aug 19 2024

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

1240 AM     Flash Flood      1 NNE Selden            40.88N 73.04W
08/19/2024                   Suffolk            NY   Fire Dept/Rescue

            Basement flooding with 4 to 5 feet of water
            and rising on Evergreen Drive. Fire
            department responding.

&&
Local storm report, Aug 19, 12:48 AM EDT, 32 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
1248 AM EDT Mon Aug 19 2024

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

1245 AM     Flash Flood      1 W Saint James         40.87N 73.17W
08/19/2024                   Suffolk            NY   Fire Dept/Rescue

            Three vehicles stranded in flood waters on
            N. County (NY 25A) at Woodlawn Ave.

&&
Local storm report, Aug 19, 12:51 AM EDT, 29 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
1251 AM EDT Mon Aug 19 2024

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

1248 AM     Flash Flood      2 S Miller Place        40.91N 72.99W
08/19/2024                   Suffolk            NY   Fire Dept/Rescue

            Water rescue on Amber Lane at Shenandoah
            boulevard.

&&
Local storm report, Aug 19, 1:02 AM EDT, 18 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
102 AM EDT Mon Aug 19 2024

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

0100 AM     Flash Flood      2 N Farmingville        40.85N 73.03W
08/19/2024                   Suffolk            NY   911 Call Center

            Report of basement flooding and car stuck in
            flooding with water in the vehicle on
            Adirondack Drive.

&&
Local storm report, Aug 19, 1:13 AM EDT, 7 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
113 AM EDT Mon Aug 19 2024

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

0110 AM     Flash Flood      1 S Miller Place        40.92N 72.99W
08/19/2024                   Suffolk            NY   Fire Dept/Rescue

            Fire Department responding to home with
            basement flooding with several feet of
            water.

&&
Local storm report, Aug 19, 1:16 AM EDT, 4 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
116 AM EDT Mon Aug 19 2024

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

0115 AM     Flash Flood      1 NE Hauppauge          40.83N 73.20W
08/19/2024                   Suffolk            NY   911 Call Center

            Vehicle stranded in flood waters at NY 347
            and NY 111.

&&

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 18, 8:05 PM EDTSpecial Weather StatementOKXWestchester40 min
Aug 18, 8:25 PM EDTAreal Flood AdvisoryOKXPutnam, Westchester2 hr
Aug 18, 8:33 PM EDTSpecial Marine WarningOKX57 min
Aug 18, 8:47 PM EDTAreal Flood AdvisoryOKXSuffolk3 hr
Aug 18, 8:54 PM EDTAreal Flood AdvisoryOKXNassau, Suffolk3 hr
Aug 18, 9:36 PM EDTAreal Flood AdvisoryOKXOrange, Rockland3 hr
Aug 18, 9:53 PM EDTFlash Flood WarningOKXNassau, Suffolk3 hr
Aug 18, 10:18 PM EDTAreal Flood AdvisoryOKXRockland, Westchester3 hr
Aug 18, 10:36 PM EDTAreal Flood AdvisoryOKXNassau, Suffolk49 min
Aug 18, 11:03 PM EDTFlash Flood WarningOKXSuffolk3 hr
Aug 18, 11:54 PM EDTAreal Flood AdvisoryOKXSuffolk5 min
Aug 18, 11:59 PM EDTFlash Flood WarningOKXSuffolk7 hr
Aug 19, 12:10 AM EDTFlash Flood Warning Considerable damage threatOKXNassau, Suffolk3 hr
Aug 19, 12:31 AM EDTAreal Flood AdvisoryOKXKings, Nassau, New York, Queens, Richmond90 min
Aug 19, 12:50 AM EDTSpecial Marine WarningOKX55 min
Aug 19, 2:38 AM EDTAreal Flood AdvisoryOKXSuffolk2 hr
Aug 19, 4:28 AM EDTCoastal Flood StatementOKXKings, Richmond, Westchester22 hr
Aug 19, 4:28 AM EDTCoastal Flood AdvisoryOKXNassau, Queens18 hr
Aug 19, 4:44 AM EDTAreal Flood WarningOKXSuffolk9 hr
Aug 19, 2:55 PM EDTSpecial Weather StatementOKXSuffolk50 min
Aug 19, 3:09 PM EDTAreal Flood AdvisoryOKXSuffolk3 hr
Aug 19, 3:35 PM EDTFlash Flood WarningOKXSuffolk82 min
Aug 19, 4:56 PM EDTAreal Flood AdvisoryOKXSuffolk94 min
Aug 19, 5:24 PM EDTSpecial Weather StatementOKXBronx, Kings, New York, Westchester36 min
Aug 19, 5:49 PM EDTSpecial Marine WarningOKX41 min
Aug 19, 6:14 PM EDTAreal Flood AdvisoryOKXSuffolk91 min
Aug 19, 6:45 PM EDTSpecial Weather StatementOKXNassau45 min

Nearby

Flash Flood Warnings in New York, 2024Every flash flood warning in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.