Alert archive / New Jersey / Flash Flood Warnings in 2021
Flash Flood Warning 23, NWS New York, NY
NWS New York, NY issued this flash flood warning at Aug 21, 2021, 10:18 PM EDT for Bergen County, Essex County, Hudson County, New Jersey; New York County, New York. It was in force for 4 hr. 5 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 21, 2021, 10:18 PM EDT (02:18 UTC)
- Expired
- Aug 22, 2021, 2:15 AM EDT
- In force
- 4 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ, New York County, NY
The radar
The Philadelphia radar (KDIX), 95 km from the middle of the area, began a volume at 02:18 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 |
|---|---|---|---|
| Aug 21, 11:04 PM EDT | FLASH FLOOD | 2 Nnw Jersey City, NJ | FLOODING ON US 1&9 TRUCK ROUTE NORTHBOUND CHARLOTTE CIRCLE. ALL LANES CLOSED. |
| Aug 21, 11:40 PM EDT | FLASH FLOOD | Harrison, NJ | FRANK E RODGERS BLVD CLOSED SOUTH OF BERGEN ST DUE TO FLOODING. MULTIPLE VEHICLES STRANDED INCLUDING A LAW ENFORCEMENT VEHICLE. WATER RESCUES ONGOING. |
| Aug 21, 11:45 PM EDT | FLASH FLOOD | Hasbrouck Heights, NJ | ALL LANES CLOSED NJ ROUTE 17. |
| Aug 22, 12:05 AM EDT | FLASH FLOOD | Harlem, NY | THREE TRAINS SUSPENDED IN BOTH DIRECTIONS BETWEEN HARLEM-148 ST & 34 ST-PENN STATION IN MANHATTAN. |
| Aug 22, 1:31 AM EDT | FLASH FLOOD | 1 Nnw Orange, NJ | FLOODING ON I-280 EASTBOUND RAMP TO EXIT 10 - NORTHFIELD AVE/CR 508. 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, 2.3 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
- 1163 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 543 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.7
The text
As transmitted.
835
WGUS51 KOKX 220218
FFWOKX
NJC003-013-017-NYC061-220415-
/O.NEW.KOKX.FF.W.0023.210822T0218Z-210822T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
1018 PM EDT Sat Aug 21 2021
The National Weather Service in Upton has issued a
* Flash Flood Warning for...
Southeastern Bergen County in northeastern New Jersey...
Southeastern Essex County in northeastern New Jersey...
Hudson County in northeastern New Jersey...
New York (Manhattan) County in southeastern New York...
* Until 1215 AM EDT.
* At 1018 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 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...
Newark, Jersey City, Bayonne, Hoboken, Bloomfield, Hackensack,
Orange, Lyndhurst, Rutherford, Secaucus, Harrison, Ridgefield,
Midtown Manhattan, Harlem, Lower East Side, Union City, East
Village, SoHo, Kearny and Fort Lee.
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 4072 7427 4080 7424 4085 7419 4082 7412
4086 7412 4086 7411 4090 7413 4092 7409
4089 7397 4079 7391 4078 7393 4072 7397
4070 7400 4067 7402 4067 7405 4066 7405
4064 7407 4067 7414 4069 7416 4069 7419
FLASH FLOOD...RADAR INDICATED
$$
MW2 follow-up statements
674
WGUS51 KOKX 220343
FFWOKX
NJC003-013-017-NYC061-220615-
/O.EXT.KOKX.FF.W.0023.000000T0000Z-210822T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
1143 PM EDT Sat Aug 21 2021
The National Weather Service in Upton has extended the
* Flash Flood Warning for...
Southeastern Bergen County in northeastern New Jersey...
Southeastern Essex County in northeastern New Jersey...
Hudson County in northeastern New Jersey...
New York (Manhattan) County in southeastern New York...
* Until 215 AM EDT.
* At 1143 PM EDT, emergency management reported thunderstorms
producing heavy rain across the warned area. Between 1.5 and 3
inches of rain have fallen. Additional rainfall amounts of 1 to 3
inches are possible in the warned area. Flash flooding is already
occurring.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Emergency management reported numerous road closures
in Hoboken. Spotters reported multiple vehicles
stranded and water rescues in Harrison.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Newark, Jersey City, Bayonne, Hoboken, Bloomfield, Hackensack,
Orange, Lyndhurst, Rutherford, Secaucus, Harrison, Ridgefield,
Midtown Manhattan, Harlem, Lower East Side, Union City, East
Village, SoHo, Kearny and Fort Lee.
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 4072 7427 4080 7424 4085 7419 4082 7412
4086 7412 4086 7411 4090 7413 4092 7409
4089 7397 4079 7391 4078 7393 4072 7397
4070 7400 4067 7402 4067 7405 4066 7405
4064 7407 4067 7414 4069 7416 4069 7419
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
MW032
WGUS71 KOKX 220612
FFSOKX
Flash Flood Statement
National Weather Service New York NY
212 AM EDT Sun Aug 22 2021
NJC003-013-017-NYC061-220622-
/O.EXP.KOKX.FF.W.0023.000000T0000Z-210822T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bergen NJ-Essex NJ-Hudson NJ-New York (Manhattan) NY-
212 AM EDT Sun Aug 22 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 215 AM EDT EARLY THIS MORNING
FOR SOUTHEASTERN BERGEN, SOUTHEASTERN ESSEX, HUDSON AND NEW YORK
(MANHATTAN) COUNTIES...
The heavy rain has ended. Flooding rainfall is no longer expected to
pose a threat. Please continue to heed remaining road closures.
A Flood Watch remains in effect until 800 AM EDT Monday for portions
of southern Connecticut, northeast New Jersey and southeast New York.
LAT...LON 4072 7427 4080 7424 4085 7419 4082 7412
4086 7412 4086 7411 4090 7413 4092 7409
4089 7397 4079 7391 4078 7393 4072 7397
4070 7400 4067 7402 4067 7405 4066 7405
4064 7407 4067 7414 4069 7416 4069 7419
$$
MWThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 9:03 PM EDT | Areal Flood Advisory | OKX | Bergen, Essex, Hudson, Passaic, Union | 87 min |
| Aug 21, 10:37 PM EDT | Areal Flood Advisory | OKX | Bergen | 83 min |
| Aug 22, 12:18 AM EDT | Flash Flood Warning | OKX | Essex, Passaic | 2 hr |
| Aug 22, 1:22 AM EDT | Flash Flood Warning | OKX | Union | 117 min |
| Aug 22, 2:49 AM EDT | Areal Flood Advisory | OKX | Bergen, Essex, Hudson, Passaic | 86 min |
| Aug 22, 4:11 AM EDT | River Flood Warning | OKX | Bergen | 34 hr |
| Aug 22, 2:44 PM EDT | Flash Flood Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 3 hr |
| Aug 22, 4:51 PM EDT | Flash Flood Warning | OKX | Bergen, Essex, Passaic | 6 hr |
| Aug 21, 8:46 PM EDT | Flash Flood Warning | OKX | Kings, Queens | 5 hr |
| Aug 21, 10:47 PM EDT | Flash Flood Warning | OKX | Bronx, Nassau, New York, Queens | 103 min |
| Aug 22, 8:39 AM EDT | Areal Flood Advisory | OKX | Suffolk | 4 hr |
| Aug 22, 1:32 PM EDT | Areal Flood Advisory | OKX | Kings, Nassau, Queens | 118 min |
| Aug 22, 3:17 PM EDT | Flash Flood Warning | OKX | Kings, Nassau, Queens | 2 hr |
| Aug 22, 4:32 PM EDT | Coastal Flood Statement | OKX | Nassau, Queens, Suffolk, Westchester | 10 hr |
| Aug 22, 5:17 PM EDT | Small Craft Advisory | OKX | 42 hr |
Nearby
Flash Flood Warnings in New Jersey, 2021Flash Flood Warnings in New York, 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.