Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 43, NWS New York, NY
NWS New York, NY issued this flash flood warning at Sep 1, 2021, 11:54 PM EDT for 5 counties in New Jersey; 6 counties in New York. It was in force for 3 hr. 9 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
- Sep 1, 2021, 11:54 PM EDT (03:54 UTC)
- Expired
- Sep 2, 2021, 2:53 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
Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Bronx County, NY, Kings County, NY, New York County, NY, Queens County, NY, Richmond County, NY, Westchester County, NY
The radar
The Philadelphia radar (KDIX), 98 km from the middle of the area, began a volume at 03:56 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 |
|---|---|---|---|
| Sep 2, 12:15 AM EDT | FLOOD | 1 E Pine Brook, NJ | THE GAUGE ON THE PASSAIC RIVER AT PINE BROOK (PINN4) REACHED FLOOD STAGE AT 1215 AM 9/2, CRESTING AT 21.66 FEET (MAJOR FLOODING) AT 115 PM 9/3. |
| Sep 2, 12:15 AM EDT | FLASH FLOOD | 1 E Pompton Plains, NJ | THE GAUGE ON THE POMPTON RIVER AT POMPTON PLAINS (PPPN4) REACHED FLOOD STAGE AT 1215 AM 9/2, CRESTING AT 19.58 FEET (MAJOR FLOODING) AT 1145 AM 9/2. |
| Sep 2, 12:30 AM EDT | FLASH FLOOD | 1 Ne Pequannock, NJ | CORRECTS PREVIOUS FLASH FLOOD REPORT FROM 1 NE PEQUANNOCK. FLOODING ON STATE HIGHWAY 23 NEAR ALEXANDER AVENUE. ROAD CLOSURES IN PLACE. TIME BASED ON DISPATCH REPORT. |
| Sep 2, 12:32 AM EDT | FLASH FLOOD | 1 Wnw North Plainfield, NJ | U.S. HIGHWAY 22 AND WILSON AVENUE CLOSED FROM FLOODING. TIME BASED ON DISPATCH REPORT. |
| Sep 2, 12:56 AM EDT | FLASH FLOOD | 1 Se Riverdale, NY | FLOODING ON I-87 MAJOR DEEGAN EXPRESSWAY NORTHBOUND EXIT 11 - VAN CORTLANDT EXTENSION PARK SOUTH. ALL LANES CLOSED. |
| Sep 2, 1:01 AM EDT | FLASH FLOOD | 1 Ne Passaic, NJ | CANAL STREET HAS SEVERAL FEET OF WATER WITH WATER UP TO CAR ROOFS. |
| Sep 2, 1:02 AM EDT | FLASH FLOOD | 2 Sw Heartland Village, NY | FLOODING ON NY 440 SOUTHBOUND ARDEN AVENUE RAMP. ALL LANES CLOSED. |
| Sep 2, 1:06 AM EDT | FLASH FLOOD | 1 Ne Fordham, NY | FLOODING ON BRONX RIVER PARKWAY SOUTHBOUND AT EAST GUN HILL ROAD. ALL LANES BLOCKED. |
| Sep 2, 2:35 AM EDT | FLASH FLOOD | 1 N Greenwich Village, NY | FLOODING ON LINCOLN TUNNEL CENTER TUBE EASTBOUND RAMP TO 36TH STREET. ALL LANES CLOSED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 3.9 hours before the alert went out and 105 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
- 123 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 456 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
801
WGUS51 KOKX 020354
FFWOKX
NJC003-013-017-031-039-NYC005-047-061-081-085-119-020700-
/O.NEW.KOKX.FF.W.0043.210902T0354Z-210902T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
1154 PM EDT Wed Sep 1 2021
...FLASH FLOOD EMERGENCY FOR NORTHEAST NEW JERSEY, NYC METRO AND
SOUTHERN WESTCHESTER...
The National Weather Service in Upton has issued a
* Flash Flood Warning for...
Bergen County in northeastern New Jersey...
Essex County in northeastern New Jersey...
Hudson County in northeastern New Jersey...
Passaic County in northeastern New Jersey...
Union County in northeastern New Jersey...
Bronx County in southeastern New York...
Kings (Brooklyn) County in southeastern New York...
New York (Manhattan) County in southeastern New York...
Queens County in southeastern New York...
Richmond (Staten Island) County in southeastern New York...
Southern Westchester County in southeastern New York...
* Until 300 AM EDT.
* At 1154 PM EDT, Doppler radar indicated heavy rain across the
warned area. Between 2 and 4 inches of rain have fallen. The
expected rainfall rate is 2 to 5 inches in 1 hour. Flash flooding
is already occurring.
This is a FLASH FLOOD EMERGENCY for Northeast New Jersey, NYC
Metro and Southern Westchester. This is a PARTICULARLY DANGEROUS
SITUATION. SEEK HIGHER GROUND NOW!
HAZARD...Life threatening flash flooding. Heavy rain producing
flash flooding.
SOURCE...Radar.
IMPACT...This is a PARTICULARLY DANGEROUS SITUATION. SEEK
HIGHER GROUND NOW! Life threatening flash flooding of
low water crossings, small creeks and streams, urban
areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Newark, Jersey City, Jamaica, Yonkers, Paterson, Elizabeth,
Flatbush, New Rochelle, Flushing, Passaic, Bayonne, White Plains,
Wayne, Mott Haven, Hoboken, Plainfield, Bloomfield, East Tremont,
Hackensack and Linden.
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.
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.
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 4120 7437 4099 7389 4106 7377 4095 7367
4082 7379 4076 7371 4063 7377 4058 7374
4053 7394 4060 7403 4048 7426 4049 7427
4056 7422 4059 7420 4060 7446 4075 7436
4091 7433 4091 7427 4100 7430 4104 7450
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CATASTROPHIC
EXPECTED RAINFALL...2-5 INCHES IN 1 HOUR
$$
Fig1 follow-up statement
259
WGUS71 KOKX 020653
FFSOKX
Flash Flood Statement
National Weather Service New York NY
253 AM EDT Thu Sep 2 2021
NJC003-013-017-031-039-NYC005-047-061-081-085-119-020703-
/O.CAN.KOKX.FF.W.0043.000000T0000Z-210902T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bergen NJ-Essex NJ-Hudson NJ-Passaic NJ-Union NJ-Bronx NY-Kings
(Brooklyn) NY-New York (Manhattan) NY-Queens NY-Richmond (Staten
Island) NY-Westchester NY-
253 AM EDT Thu Sep 2 2021
...FLASH FLOOD WARNING FOR BERGEN, ESSEX, HUDSON, PASSAIC, UNION,
BRONX, KINGS (BROOKLYN), NEW YORK (MANHATTAN), QUEENS, RICHMOND
(STATEN ISLAND) AND SOUTHERN WESTCHESTER COUNTIES HAS BEEN REPLACED
WITH A FLOOD WARNING...
LAT...LON 4120 7437 4099 7389 4106 7377 4095 7367
4082 7379 4076 7371 4063 7377 4058 7374
4053 7394 4060 7403 4048 7426 4049 7427
4056 7422 4059 7420 4060 7446 4075 7436
4091 7433 4091 7427 4100 7430 4104 7450
$$
JMThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 8:15 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Essex, Hudson | 45 min |
| Sep 1, 8:32 PM EDT | Severe Thunderstorm Warning | OKX | Essex, Hudson, Union | 43 min |
| Sep 1, 9:03 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Hudson | 42 min |
| Sep 1, 9:25 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Hudson | 65 min |
| Sep 2, 1:06 AM EDT | Areal Flood Warning | OKX | Bergen | 4 hr |
| Sep 2, 2:53 AM EDT | Areal Flood Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 7 hr |
| Sep 2, 5:01 AM EDT | Areal Flood Warning | OKX | Bergen, Passaic | 3 hr |
| Sep 2, 10:16 AM EDT | Areal Flood Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 25 hr |
| Sep 1, 9:06 PM EDT | Tornado Warning | OKX | Bronx, New York, Westchester | 24 min |
| Sep 1, 9:15 PM EDT | Special Marine Warning | OKX | 60 min | |
| Sep 1, 9:25 PM EDT | Special Marine Warning | OKX | 65 min | |
| Sep 1, 9:28 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Westchester | 2 hr |
| Sep 1, 9:34 PM EDT | Special Marine Warning | OKX | 12 min | |
| Sep 1, 9:56 PM EDT | Special Marine Warning | OKX | 34 min | |
| Sep 1, 9:57 PM EDT | Severe Thunderstorm Warning | OKX | Kings, Nassau, Queens | 48 min |
| Sep 1, 10:08 PM EDT | Flash Flood Warning | OKX | Nassau, Westchester | 4 hr |
| Sep 1, 10:09 PM EDT | Special Marine Warning | OKX | 96 min | |
| Sep 1, 10:12 PM EDT | Special Marine Warning | OKX | 20 min | |
| Sep 1, 10:20 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 55 min |
| Sep 1, 10:26 PM EDT | Special Marine Warning | OKX | 64 min | |
| Sep 1, 10:30 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 45 min |
| Sep 1, 10:39 PM EDT | Tornado Warning | OKX | Suffolk | 36 min |
| Sep 1, 10:44 PM EDT | Severe Thunderstorm Warning | OKX | Nassau | 46 min |
| Sep 1, 10:47 PM EDT | Special Marine Warning | OKX | 118 min | |
| Sep 1, 10:55 PM EDT | Special Marine Warning | OKX | 45 min | |
| Sep 1, 11:11 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 64 min |
| Sep 1, 11:13 PM EDT | Flash Flood Warning | OKX | Suffolk | 6 hr |
| Sep 1, 11:19 PM EDT | Special Marine Warning | OKX | 86 min | |
| Sep 2, 12:13 AM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 92 min |
| Sep 2, 12:25 AM EDT | Flash Flood Warning | OKX | Nassau, Queens, Suffolk | 4 hr |
| Sep 2, 12:28 AM EDT | Special Marine Warning | OKX | 92 min | |
| Sep 2, 12:48 AM EDT | River Flood Warning | OKX | Orange, Ulster | 12 hr |
| Sep 2, 1:50 AM EDT | Special Weather Statement | OKX | Suffolk | 40 min |
| Sep 2, 1:57 AM EDT | Special Marine Warning | OKX | 80 min | |
| Sep 2, 2:30 AM EDT | Areal Flood Warning | OKX | Bronx, Nassau, Putnam, Queens, Rockland, Suffolk and 1 more | 8 hr |
| Sep 2, 3:50 AM EDT | Rip Current Statement | OKX | Kings, Nassau, Queens, Suffolk | 16 hr |
| Sep 2, 4:38 AM EDT | Areal Flood Advisory | OKX | Nassau, Queens, Suffolk | 3 hr |
| Sep 2, 4:55 AM EDT | Areal Flood Advisory | OKX | Suffolk | 3 hr |
| Sep 2, 7:49 AM EDT | Areal Flood Advisory | OKX | Orange, Putnam, Rockland, Westchester | 10 hr |
| Sep 2, 10:07 AM EDT | Areal Flood Warning | OKX | Putnam, Rockland, Westchester | 15 hr |
| Sep 2, 10:59 AM EDT | Small Craft Advisory | OKX | 19 hr |
Nearby
Flash Flood Warnings in New York, 2021Flash Flood Warnings in New Jersey, 2021Every flash flood warning in 2021
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.