Alert archive / New York / Flash Flood Warnings in 2026
Flash Flood Warning 7, NWS New York, NY
NWS New York, NY issued this flash flood warning at Jul 6, 2026, 1:29 PM EDT for Suffolk County, New York. It was in force for 2 hr. 3 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
- Jul 6, 2026, 1:29 PM EDT (17:29 UTC)
- Expired
- Jul 6, 2026, 3:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Suffolk County, NY
The radar
The Brookhaven radar (KOKX), 33 km from the middle of the area, began a volume at 17:28 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 2:05 PM EDT | FLASH FLOOD | 1 Nnw Farmingdale Airpo, NY | DOT traffic camera at NY 110 near Conklin street shows police blocking southbound lanes of NY 110 at the LIRR underpass. Two cars are stranded in flood waters. |
| Jul 6, 2:07 PM EDT | FLASH FLOOD | 1 S North Babylon, NY | 2 to 3 feet in parking lot in North Babylon on Deer Park avenue. |
| Jul 6, 2:27 PM EDT | FLASH FLOOD | Deer Park, NY | Video of car on road with water above the wheel well and hood. |
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 3 storm reports to this flash flood warning; the first came 36 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 12:00Z, 5.5 hours before the alert went out and 33 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.
- Mixed-layer CAPE
- 11 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 645 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
033
WGUS51 KOKX 061729
FFWOKX
NYC103-061930-
/O.NEW.KOKX.FF.W.0007.260706T1729Z-260706T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
129 PM EDT Mon Jul 6 2026
The National Weather Service in Upton has issued a
* Flash Flood Warning for...
Western Suffolk County in southeastern New York...
* Until 330 PM EDT.
* At 129 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by heavy showers and embedded
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...
Islip, Brentwood, Deer Park, Lindenhurst, Ronkonkoma, Babylon,
Robert Moses State Park, Bay Shore, Melville, Sayville,
Amityville, Captree State Park, Gilgo State Park, Central Islip,
West Islip, Copiague, North Bay Shore, East Islip, Wyandanch and
Bohemia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Stay away or be swept away. River banks and culverts can become
unstable and unsafe.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4082 7311 4071 7304 4071 7311 4068 7313
4068 7315 4070 7319 4070 7320 4069 7321
4069 7323 4067 7326 4066 7322 4067 7320
4067 7317 4066 7316 4069 7303 4066 7301
4061 7322 4061 7332 4060 7341 4079 7345
FLASH FLOOD...RADAR INDICATED
$$
DS1 follow-up statement
116
WGUS71 KOKX 061836
FFSOKX
Flash Flood Statement
National Weather Service New York NY
236 PM EDT Mon Jul 6 2026
NYC103-061930-
/O.CON.KOKX.FF.W.0007.000000T0000Z-260706T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Suffolk NY-
236 PM EDT Mon Jul 6 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM EDT THIS
AFTERNOON FOR WESTERN SUFFOLK COUNTY...
At 236 PM EDT, Local law enforcement reported flash flooding with
road closures in Farmingdale. Additional rainfall amounts of 1 to 2
inches are possible in the warned area. Flash flooding is ongoing or
may begin shortly in others areas in the warning.
HAZARD...Flash flooding caused by heavy rain and embedded
thunderstorms.
SOURCE...Law enforcement reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Islip, Brentwood, Deer Park, Lindenhurst, Ronkonkoma, Babylon,
Robert Moses State Park, Bay Shore, Melville, Sayville,
Amityville, Captree State Park, Gilgo State Park, Central Islip,
West Islip, Copiague, North Bay Shore, East Islip, Wyandanch and
Bohemia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Stay away or be swept away. River banks and culverts can become
unstable and unsafe.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4082 7311 4071 7304 4071 7311 4068 7313
4068 7315 4070 7319 4070 7320 4069 7321
4069 7323 4067 7326 4066 7322 4067 7320
4067 7317 4066 7316 4069 7303 4066 7301
4061 7322 4061 7332 4060 7341 4079 7345
FLASH FLOOD...OBSERVED
$$
DSWhat 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 Jul 6, 10:42 AM EDT, 2 hours 47 minutes earlier. Its key messages:
- 1) Multiple rounds of heavy rain and thunderstorms through late Monday could lead to scattered to numerous instances of flash flooding. Flooding may be locally significant.
Area forecast discussion, Jul 6, 10:42 AM EDT, 2 hours 47 minutes before
Area Forecast Discussion
National Weather Service New York NY
1042 AM EDT Mon Jul 6 2026
.WHAT HAS CHANGED...
The threat for flash flooding continues today, although the
exact location of the heaviest rainfall/greatest flooding still
remains somewhat uncertain.
&&
.KEY MESSAGES...
1) Multiple rounds of heavy rain and thunderstorms through late
Monday could lead to scattered to numerous instances of flash
flooding. Flooding may be locally significant.
&&
.DISCUSSION...
.KEY MESSAGE 1...
Flood Watch remains in effect through tonight.
A stationary front will remain south of Long Island today.
Multiple rounds of heavy rain, along with embedded thunderstorms
are expected as a series of shortwaves ride along the boundary
through tonight.
Showers along with embedded thunderstorms are expected to
continue through much of the day today as better upper level
support/jet energy moves into the region. Conditions remain
favorable for torrential rainfall rates/flooding today due to a
humid air mass over the region. PWATs remain around 2 inches
areawide today, although PWATs of 2+ inches may periodically
advect into the southern portion of the area, which is higher
than daily max sounding climatology values. Some of the 00z
forecast models have indicated PWATs maxing out closer to 2.4
inches.
With an easterly flow, mainly parallel to the frontal boundary,
training of storms will be likely with potential for backbuilding.
00Z HREF probabilities for 3 inches of rain or more in 3 hours
highlights portions of the NE NJ, NYC and Long Island in a 30
percent contour for this evening into tonight, which is
typically a good indication of flash flooding potential for this
area.
As a result, WPC has placed NYC, Long Island and southern CT in
a moderate risk for excessive rainfall today.
In terms of rainfall amounts, storm total QPF through Tuesday will
likely range between 2 and 3 inches with locally higher amounts
of 4+ inches. Rainfall rates will likely be 1-2 inches per hour
with locally higher rates possible. The main area of
uncertainty with the forecast is where the highest rainfall
totals and resulting flooding will occur and will depend on the
exact placement of the frontal boundary.
Flooding impacts would be highest in urban and poor drainage
areas in addition to the most responsive rivers/creeks/streams.
&&
.AVIATION /15Z MONDAY THROUGH FRIDAY/...
A wave of low pressure develops and travels along a front south
of the region through the TAF period.
IFR conditions are expected today, although brief periods of
MVFR or even VFR are possible at some sites through 17Z.
Conditions then deteriorate to LIFR tonight.
Periods of showers will continue through the day today. Embedded
thunderstorms are possible as well, primarily after 18z, so
will continue to keep the PROB30s in the TAFs from 18z til 00z.
Precip chances will continue through the night, however any
chances for thunder diminish after midnight.
E-ENE winds 10-15 kt with gusts to near 20 kt along the coast.
East of NYC, the gusts should last into parts of the overnight.
Some terminals away from the coast will at times have more
variable wind directions.
...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
Amendments likely to refine the timing of showers and
thunderstorms as well as timing of gusts.
Timing of categorical changes could be off by 2-4 hours
compared to TAF.
Fluctuation between categories possible at times.
.OUTLOOK FOR 12Z TUESDAY THROUGH FRIDAY...
Tuesday: IFR and showers, mainly early. Slight chance of
thunder. Improving to MVFR in the afternoon with lower chances
of showers. VFR eventually returns at night.
Wednesday: VFR.
Thursday: Possible showers and thunderstorms, mainly at night.
Brief MVFR to IFR possible, otherwise mainly VFR.
Friday: Chance of SHRA/TSRA with MVFR to IFR possible.
Otherwise, mainly VFR.
&&
.MARINE...
A Small Craft Advisory remains in effect for Long Island Sound,
Fire Island Inlet to Montauk Point, and the South Shore Bays
from Jones Inlet through Shinnecock Bay today and tonight.
East to east-northeast wind gusts to 25 to as high as near 30
knots and waves of 4 to periodically 5 feet are expected during
this time. Waves may remain elevated into Tuesday.
Rip Currents: Increasing E flow should increase the risk back
to moderate today. Flow continues to shift out of the NE but
given persisting E/SE swell a moderate is maintained for
Tuesday.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...Flood Watch through late tonight for CTZ005>012.
NY...Flood Watch through late tonight for NYZ067>075-078>081-
176>179.
NJ...Flood Watch through late tonight for NJZ002-004-006-103>108.
MARINE...Small Craft Advisory until 6 AM EDT Tuesday for ANZ331-332-335-
340-345-350-353.
&&
DISCUSSION...BC
AVIATION...FEB/BC
MARINE...BCHazardous weather outlook, Jul 6, 2:43 AM EDT, 10 hours 46 minutes before
Hazardous Weather Outlook National Weather Service New York NY 243 AM EDT Mon Jul 6 2026 CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-070645- Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Fairfield-Southern New Haven- Southern Middlesex-Southern New London-Western Passaic- Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-Western Essex- Eastern Essex-Western Union-Eastern Union-Orange-Putnam-Rockland- Northern Westchester-Southern Westchester-New York (Manhattan)-Bronx- Richmond (Staten Island)-Kings (Brooklyn)-Northwest Suffolk- Northeast Suffolk-Southwest Suffolk-Southeast Suffolk- Northern Queens-Northern Nassau-Southern Queens-Southern Nassau- 243 AM EDT Mon Jul 6 2026 ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... This Hazardous Weather Outlook is for southern Connecticut, northeast New Jersey and southeast New York. .DAY ONE...Today 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...Tuesday through Sunday. No hazardous weather is expected at this time that would meet NWS warning criteria. .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. ANZ331-332-335-338-340-345-350-353-355-380-383-385-070645- 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- Waters from Moriches Inlet NY to Montauk Point NY from 20 to 60 nm- Waters from Fire Island Inlet NY to Moriches Inlet NY from 20 to 60 nm- Waters from Sandy Hook NJ to Fire Island Inlet NY from 20 to 60 nm- 243 AM EDT Mon Jul 6 2026 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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.
In the hours before
Local storm report, Jul 6, 10:05 AM EDT, 3 hours 24 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
1005 AM EDT Mon Jul 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0100 AM Flash Flood Middletown 41.45N 74.41W
07/06/2026 Orange NY Emergency Mngr
Several flooded basements in Middletown and
Goshen.
&&Local storm report, Jul 6, 10:06 AM EDT, 3 hours 23 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
1006 AM EDT Mon Jul 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0100 AM Flash Flood Otisville 41.47N 74.54W
07/06/2026 Orange NY Emergency Mngr
Several flooded basements in Otisville.
&&Local storm report, Jul 6, 12:53 PM EDT, 36 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
1253 PM EDT Mon Jul 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1200 PM Flash Flood Coney Island 40.58N 73.99W
07/06/2026 Kings NY Emergency Mngr
Westbound Belt Parkway at Cropsey
Avenue/Exit 6S closed due to flooding over
the roadway.
&&
BJGLocal storm report, Jul 6, 1:19 PM EDT, 10 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
119 PM EDT Mon Jul 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1252 PM Flash Flood 1 ENE Plainedge 40.73N 73.46W
07/06/2026 Nassau NY Dept of Highways
NY 24 is closed in both directions due to
flooding at West Gate.
&&The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 8:51 PM EDT | Flash Flood Warning | OKX | Orange | 5 hr |
| Jul 5, 8:56 PM EDT | Special Weather Statement | OKX | Kings, New York, Richmond | 49 min |
| Jul 5, 10:58 PM EDT | Special Marine Warning | OKX | 31 min | |
| Jul 5, 11:22 PM EDT | Areal Flood Advisory | OKX | Bronx, Kings, Nassau, New York, Queens, Richmond | 83 min |
| Jul 6, 9:57 AM EDT | Areal Flood Advisory | OKX | Kings, Nassau, New York, Queens, Richmond | 2 hr |
| Jul 6, 11:17 AM EDT | Areal Flood Advisory | OKX | Nassau | 118 min |
| Jul 6, 11:31 AM EDT | Flash Flood Warning | OKX | Kings, Nassau, Queens | 3 hr |
| Jul 6, 12:32 PM EDT | Areal Flood Advisory | OKX | Suffolk | 118 min |
| Jul 6, 1:56 PM EDT | Areal Flood Advisory | OKX | Suffolk | 2 hr |
| Jul 6, 2:24 PM EDT | Areal Flood Advisory | OKX | Suffolk | 2 hr |
Nearby
Flash Flood Warnings in New York, 2026Every flash flood warning in 2026
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.