Alert archive / New York / Flash Flood Warnings in 2026
Flash Flood Warning 8, NWS New York, NY
NWS New York, NY issued this flash flood warning at Jul 9, 2026, 1:19 PM EDT for Kings County, Richmond County, New York. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2026, 1:19 PM EDT (17:19 UTC)
- Expired
- Jul 9, 2026, 5:08 PM EDT
- In force
- 4 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kings County, NY, Richmond County, NY
The radar
The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 17:23 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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, 5.3 hours before the alert went out and 104 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
- 20 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 986 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
913
WGUS51 KOKX 091719
FFWOKX
NYC047-085-092015-
/O.NEW.KOKX.FF.W.0008.260709T1719Z-260709T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
119 PM EDT Thu Jul 9 2026
The National Weather Service in Upton has issued a
* Flash Flood Warning for...
Kings (Brooklyn) County in southeastern New York...
Richmond (Staten Island) County in southeastern New York...
* Until 415 PM EDT.
* At 119 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. The expected rainfall rate is
1.5 to 2.5 inches in 1 hour. Additional rainfall amounts of 1 to 3
inches are possible in the warned area. Flash flooding is ongoing
or expected to begin shortly.
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...
Flatbush, Coney Island, Todt Hill, Crown Heights, The Verrazano
Narrows Bridge, Huguenot, Canarsie, Bay Ridge, Port Richmond,
Tottenville, Tompkinsville, Bensonhurst, Oakwood, Park Slope,
Sheepshead Bay, Annadale, New Dorp, Grasmere, Heartland Village
and Greenridge.
This includes the following Event Locations...
Sullivans Homeport Pier.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of urban
areas, highways, streets and underpasses as well as other drainage
areas and low lying spots.
If you are in a basement, be prepared to move to a higher floor.
&&
LAT...LON 4055 7425 4056 7422 4064 7420 4066 7407
4063 7405 4067 7403 4069 7391 4069 7387
4065 7386 4064 7383 4059 7382 4057 7383
4058 7386 4056 7401 4060 7404 4054 7410
4048 7425 4049 7427 4052 7425
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1.5-2.5 INCHES IN 1 HOUR
$$
NV3 follow-up statements
919
WGUS71 KOKX 091941
FFSOKX
Flash Flood Statement
National Weather Service New York NY
341 PM EDT Thu Jul 9 2026
NYC047-091951-
/O.CAN.KOKX.FF.W.0008.000000T0000Z-260709T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kings (Brooklyn) NY-
341 PM EDT Thu Jul 9 2026
...FLASH FLOOD WARNING IS CANCELLED FOR KINGS (BROOKLYN) COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
&&
LAT...LON 4051 7426 4052 7425 4055 7425 4056 7422
4060 7420 4061 7421 4063 7420 4064 7419
4064 7413 4065 7409 4066 7408 4066 7407
4060 7404 4054 7410 4048 7425 4048 7426
4049 7427 4050 7426
$$
NYC085-092015-
/O.CON.KOKX.FF.W.0008.000000T0000Z-260709T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Richmond (Staten Island) NY-
341 PM EDT Thu Jul 9 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM EDT THIS
AFTERNOON FOR RICHMOND (STATEN ISLAND) COUNTY...
At 341 PM EDT, Doppler radar indicated heavy downpours with embedded
thunderstorms producing heavy rain across the warned area. Between
0.5 and 1 inch of rain has fallen. The expected rainfall rate is
0.75 to 1.25 inches in 1 hour. 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 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...
Todt Hill, Huguenot, The Verrazano Narrows Bridge, Port Richmond,
Tottenville, Oakwood, Tompkinsville, Annadale, New Dorp, Heartland
Village, Greenridge and Grasmere.
This includes the following Event Locations...
Sullivans Homeport Pier.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of urban
areas, highways, streets and underpasses as well as other drainage
areas and low lying spots.
If you are in a basement, be prepared to move to a higher floor.
&&
LAT...LON 4051 7426 4052 7425 4055 7425 4056 7422
4060 7420 4061 7421 4063 7420 4064 7419
4064 7413 4065 7409 4066 7408 4066 7407
4060 7404 4054 7410 4048 7425 4048 7426
4049 7427 4050 7426
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...0.75-1.25 INCHES IN 1 HOUR
$$
NV969
WGUS51 KOKX 091959
FFWOKX
NYC085-092145-
/O.EXT.KOKX.FF.W.0008.000000T0000Z-260709T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
359 PM EDT Thu Jul 9 2026
The National Weather Service in Upton has extended the
* Flash Flood Warning for...
Richmond (Staten Island) County in southeastern New York...
* Until 545 PM EDT.
* At 359 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1 inch of rain
has fallen. The expected rainfall rate is 0.75 to 1 inch in 1
hour. Additional rainfall amounts of 1 to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Todt Hill, Huguenot, The Verrazano Narrows Bridge, Port Richmond,
Tottenville, Oakwood, Tompkinsville, Annadale, New Dorp, Heartland
Village, Greenridge and Grasmere.
This includes the following Event Locations...
Sullivans Homeport Pier.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of urban
areas, highways, streets and underpasses as well as other drainage
areas and low lying spots.
If you are in a basement, be prepared to move to a higher floor.
&&
LAT...LON 4051 7426 4052 7425 4055 7425 4056 7422
4060 7420 4061 7421 4063 7420 4064 7419
4064 7413 4065 7409 4066 7408 4066 7407
4060 7404 4054 7410 4048 7425 4048 7426
4049 7427 4050 7426
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...0.75-1 INCH IN 1 HOUR
$$
NV570
WGUS71 KOKX 092108
FFSOKX
Flash Flood Statement
National Weather Service New York NY
508 PM EDT Thu Jul 9 2026
NYC085-092118-
/O.CAN.KOKX.FF.W.0008.000000T0000Z-260709T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Richmond (Staten Island) NY-
508 PM EDT Thu Jul 9 2026
...FLASH FLOOD WARNING IS CANCELLED FOR RICHMOND (STATEN ISLAND)
COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 4051 7426 4052 7425 4055 7425 4056 7422
4060 7420 4061 7421 4062 7420 4064 7419
4064 7413 4065 7409 4066 7408 4064 7406
4060 7404 4054 7410 4048 7425 4048 7426
4049 7427 4050 7426
$$
NVWhat 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 9, 10:54 AM EDT, 2 hours 25 minutes earlier. Its key messages:
- 1) Isolated strong to severe thunderstorm and localized flash flood threat during the afternoon and evening both today and Friday. Increasingly warm and muggy today and Friday, with heat indices peaking in the lower to mid 90s on Friday. 2) Mainly dry conditions for the upcoming weekend with seasonably warm temperatures.
Area forecast discussion, Jul 9, 10:54 AM EDT, 2 hours 25 minutes before
Area Forecast Discussion National Weather Service New York NY 1054 AM EDT Thu Jul 9 2026 .WHAT HAS CHANGED... No significant changes to forecast. && .KEY MESSAGES... 1) Isolated strong to severe thunderstorm and localized flash flood threat during the afternoon and evening both today and Friday. Increasingly warm and muggy today and Friday, with heat indices peaking in the lower to mid 90s on Friday. 2) Mainly dry conditions for the upcoming weekend with seasonably warm temperatures. && .DISCUSSION... .KEY MESSAGE 1... Forecast remains on track, with lead area of showers and embedded thunderstorms approaching the NYC/NJ metro between 1 and 2 pm. This activity is relatively weak as it encounters a weakly unstable and weakly sheared environment. Some of the 00z CAM guidance has initialized this activity fairly well, and does intensify this activity as it approaches NE NJ between 17z and 18z in response to building instability and approaching vort train. Primary threat will be for torrential downpours, with an isolated flash flood threat (10 % prob across NE NJ/NYC metro). Secondary threat of a pulse wet microburst (5 %prob across NE NJ/NYC metro). The flash flood and severe threat decreases moving N and E from the NYC/NJ metro. Otherwise, there continues to remain good agreement on Mid- Mississippi River valley closed upper low shearing towards the region later today, with a resultant weak surface low pressure wave tracking across the northern Mid-Atlantic, and lee/pre- frontal surface trough developing and approaching from the west. These features should be able to provide a trigger/focus for scattered showers and thunderstorms across NYC/NJ metro and N&W in a marginally (locally moderate) unstable and weak shear environment. Severe threat should be limited in this environment, but can't rule out an isolated damaging pulse wet microburst threat, especially if the lower atmosphere is able to destabilize more than forecast. Environment is more conducive to an isolated flash flood threat with high PWATs (2-2.25"), a deep warm cloud layer, and potential for briefly back building storms. Higher flash flood threat appears to be across SE PA/S NJ with higher instability and enhanced moisture transport/convergence with the weak surface wave. Still an isolated flash flood risk is signaled for the NYC/NE NJ metro region in the high res- guidance, depicted thru being on the edge of HREF 10% ensemble prob for 3"/3hr, and HiRes ARW and NSSL WRF indicating max NY/NJ metro neighborhood value of 2 1/2 to 3" in 3/hr in WPC URRD. Given the continued signals in the hi-res guidance, will continue to address in HWO. Diminishing severe/flash flood threat in the late evening in wake of trough. On Friday, northern stream shortwave digs into northern New England, with a bit more in the way of mean troughing across the region, while a convectively enhanced shortwave approaches the region Friday aft/eve. At the surface, this will have a stronger cold front approaching the region in the afternoon/evening. Trigger and focus is once again there for another round of scattered showers and thunderstorms Fri aft/eve, with an isolated severe/flash flood threat. A slightly better severe threat on Friday aft/eve with 30-35kt deep layer shear profile to complement marginal to locally moderate instability environment. Damaging wind gusts would be the main threat. Flash flood threat looks a bit lower than Thursday with slightly lower PWATS (mid-level drying in wake of Thursday pre-frontal trough) and quicker anticipated storm movement. Flash flood threat will ultimately be contingent on moisture pooling ahead of cold front, storm coverage, and potential SW to NE training along frontal boundary. Hi-res guidance is hinting at a potential for more widespread convective activity as compared to Thursday. Temperatures will continue to moderate to near seasonable levels today with highs in the middle 80s. Highs could come close to 90 degrees in the NYC metro and NE NJ with most other spots reaching the upper 80s on Friday, with max heat indices reaching the low to mid 90s. .KEY MESSAGE 2... General model agreement in mean upper troughing sliding across the NE US this weekend and offshore on Monday, while at the surface Canadian high pressure builds down from southern Canada thru the weekend and overhead by Monday. This pattern should keep conditions mainly dry through the weekend with temperatures near seasonably warm levels. The general synoptic pattern could persist into early next week with only a slight uptick in temperatures. && .AVIATION /15Z THURSDAY THROUGH MONDAY/... Mainly VFR as a weak trough of low pressure approaches the terminals this afternoon. A few showers/thunderstorms moving across eastern PA are expected to reach KEWR/KTEB closer to 17z, so adjusted the TEMPO to reflect the latest timing. Also, some MVFR cigs (BKN025-030) are being observed out ahead of it. I have also bumped up the timing from 19z to 18z for KJFK and KLGA for thunder potential. MVFR or lower possible in any thunderstorm. No other changes planed for the afternoon TAFs. Additional TSRA possible again on Friday afternoon, but outside current 30-hr TAF window. Winds will generally be less than 10 kt from the S/SW, increasing to 10-15kts this afternoon, with locally higher gusts in any thunderstorms. ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty... Amendments likely for timing of convection today, especially onset/offset. A few gusts S/SW 15-20kt possible this afternoon. .OUTLOOK FOR 12Z FRIDAY THROUGH MONDAY... Friday: Mainly VFR. Chance of afternoon and evening showers and thunderstorms with brief MVFR to IFR conditions possible. Saturday through Monday: VFR. && .MARINE... Sub-SCA conditions expected today and Fri with modest S/SW flow of 15g20kt. Occasional gusts to 25 kt possible for ocean waters west of Fire Inlet, entrance to NY Harbor, and adjacent southern bays each day with coastal jet development. Seas generally 3 to 4 ft. Sub-SCA conditions likely continue for the weekend into Monday with high pressure building towards and then over the waters. Rip Currents: A moderate risk of rip currents persists through Friday, due to a mixture of 1-3 ft S wind wave and lingering 1-3 ft SE/E swells. && .OKX WATCHES/WARNINGS/ADVISORIES... CT...Air Quality Alert until 11 PM EDT this evening for CTZ005>012. NY...None. NJ...None. MARINE...None. && DISCUSSION...NV/MW AVIATION...BC MARINE...NV/MW
Hazardous weather outlook, Jul 9, 2:55 AM EDT, 10 hours 24 minutes before
Hazardous Weather Outlook National Weather Service New York NY 255 AM EDT Thu Jul 9 2026 NJZ002-004-006-103>108-NYZ067>075-176>179-100700- 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)- Northern Queens-Northern Nassau-Southern Queens-Southern Nassau- 255 AM EDT Thu Jul 9 2026 This Hazardous Weather Outlook is for northeast New Jersey and southeast New York. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Isolated strong to severe thunderstorm and flash flood threat during the afternoon and evening both today and Friday. .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. CTZ005>012-NYZ078>081-100700- Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Fairfield-Southern New Haven- Southern Middlesex-Southern New London-Northwest Suffolk- Northeast Suffolk-Southwest Suffolk-Southeast Suffolk- 255 AM EDT Thu Jul 9 2026 This Hazardous Weather Outlook is for southern Connecticut and southeast New York. .DAY ONE...Today 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. ANZ331-332-335-338-340-345-350-353-355-380-383-385-100700- 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- 255 AM EDT Thu Jul 9 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...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.
In the hours before
Special weather statement, Jul 9, 12:38 PM EDT, 41 minutes before
Special Weather Statement
National Weather Service New York NY
1238 PM EDT Thu Jul 9 2026
NJZ006-106>108-NYZ072-074-075-091800-
Hudson NJ-Eastern Union NJ-Eastern Essex NJ-Western Union NJ-
New York (Manhattan) NY-Kings (Brooklyn) NY-Richmond (Staten Is.) NY-
1238 PM EDT Thu Jul 9 2026
...STRONG THUNDERSTORMS WILL IMPACT HUDSON...UNION...SOUTHEASTERN
ESSEX...RICHMOND...KINGS AND NEW YORK (MANHATTAN) COUNTIES THROUGH
200 PM EDT...
At 1238 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms along a line extending from Somerville to North
Brunswick Township to Clearbrook Park. Movement was east at 25 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Strong thunderstorms will be near...
Plainfield around 1250 PM EDT.
Tottenville and Clark around 105 PM EDT.
Linden and Huguenot around 115 PM EDT.
Elizabeth and Oakwood around 120 PM EDT.
Todt Hill and Port Richmond around 125 PM EDT.
Newark and Bayonne around 130 PM EDT.
The Verrazano Narrows Bridge and Bay Ridge around 135 PM EDT.
Jersey City and Coney Island around 140 PM EDT.
Battery Park and Park Slope around 145 PM EDT.
This includes the following event locations Brooklyn Bridge Park,
Sports Illustrated Stadium, Liberty State Park, Governors Island,
Sullivans Homeport Pier, Battery Park, Hoboken Waterfront, Hudson
River Park Pier 34, and Hunters Point.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4050 7426 4055 7425 4056 7421 4060 7422
4059 7428 4061 7431 4060 7446 4062 7442
4067 7441 4066 7445 4067 7443 4072 7426
4071 7425 4073 7423 4079 7400 4057 7389
4056 7400 4060 7403 4053 7410 4050 7423
TIME...MOT...LOC 1638Z 252DEG 22KT 4057 7460 4044 7451 4030 7446
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
NVThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 12:38 PM EDT | Special Weather Statement | OKX | Kings, Richmond | 82 min |
| Jul 9, 1:08 PM EDT | Areal Flood Advisory | OKX | Kings, Richmond | 3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.