Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 11, NWS New York, NY
NWS New York, NY issued this flash flood warning at Jul 8, 2021, 3:53 PM EDT for 6 counties in New York; Bergen County, Essex County, Hudson County, New Jersey. 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
- Jul 8, 2021, 3:53 PM EDT (19:53 UTC)
- Expired
- Jul 8, 2021, 7:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Queens County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 78 km from the middle of the area, began a volume at 19:53 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 8, 3:55 PM EDT | FLASH FLOOD | 1 Nne Washington Height, NY | WATER UP TO TOP OF TIRE ON CORNER OF NAGLE AVE AND DYCKMAN AVE. |
| Jul 8, 4:19 PM EDT | FLASH FLOOD | 1 Nw Fordham, NY | ALL LANES BLOCKED ON I-87 MAJOR DEEGAN EXPRESSWAY SOUTHBOUND DUE TO FLOODING. |
| Jul 8, 4:30 PM EDT | FLASH FLOOD | 1 Se Harlem, NY | SEVERAL SUBWAY STATIONS IN THE BRONX INUNDATED WITH FLOOD WATERS. |
| Jul 8, 4:45 PM EDT | FLASH FLOOD | 1 Ene Washington Height, NY | OVER A DOZEN MOTORISTS HAD TO BE RESCUED BY NYPD ON THE MAJOR DEEGAN EXPRESSWAY AT W 179TH STREET. |
| Jul 8, 4:48 PM EDT | FLASH FLOOD | 1 N Pelham, NY | HUTCHINSON RIVER PARKWAY CLOSED SOUTHBOUND AT EXIT 13 DUE TO FLOODING. ALL LANES BLOCKED. |
| Jul 8, 5:00 PM EDT | FLASH FLOOD | 1 Nnw Harlem, NY | SIGNIFICANT FLOODING INUNDATED THE 157TH STREET SUBWAY STATION IN WASHINGTON HEIGHTS. |
| Jul 8, 5:02 PM EDT | FLASH FLOOD | Washington Heights, NY | FLOODING ON MAJOR DEEGAN EXPRESSWAY NEAR CROSS BRONX EXPRESSWAY. ALL LANES BLOCKED. VEHICLES STRANDED. |
| Jul 8, 5:13 PM EDT | FLASH FLOOD | 2 Ne Riverdale, NY | ROAD CLOSED ON SAW MILL RIVER PARKWAY SOUTHBOUND AT MCLEAN AVE DUE TO FLOODING. |
| Jul 8, 5:55 PM EDT | FLASH FLOOD | 1 Ssw Washington Height, NY | HARLEM RIVER DRIVE SOUTHBOUND IN AREA OF EXIT 23 CLOSED DUE TO FLOODING. |
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 12:00Z, 7.9 hours before the alert went out and 78 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
- 973 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 751 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted.
350
WGUS51 KOKX 081953
FFWOKX
NJC003-013-017-NYC005-047-059-061-081-119-082300-
/O.NEW.KOKX.FF.W.0011.210708T1953Z-210708T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
353 PM EDT Thu Jul 8 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...
Bronx County in southeastern New York...
Kings (Brooklyn) County in southeastern New York...
Central Nassau County in southeastern New York...
New York (Manhattan) County in southeastern New York...
Queens County in southeastern New York...
South Central Westchester County in southeastern New York...
* Until 700 PM EDT.
* At 353 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, Jamaica, New Rochelle, Flushing, Mott Haven,
Levittown, Hoboken, East Tremont, Port Chester, Glen Cove,
Plainview, Garden City, Lyndhurst, Syosset, Mineola, Rutherford,
Secaucus, Rye and Westbury.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
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.
&&
LAT...LON 4071 7422 4078 7419 4089 7399 4092 7385
4102 7366 4101 7364 4100 7364 4094 7367
4090 7374 4086 7375 4088 7372 4086 7366
4091 7364 4092 7350 4073 7344 4065 7392
FLASH FLOOD...RADAR INDICATED
$$
DJ2 follow-up statements
369
WGUS71 KOKX 082155
FFSOKX
Flash Flood Statement
National Weather Service New York NY
555 PM EDT Thu Jul 8 2021
NJC003-013-017-NYC005-047-059-061-081-119-082300-
/O.CON.KOKX.FF.W.0011.000000T0000Z-210708T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bergen NJ-Essex NJ-Hudson NJ-Bronx NY-Kings (Brooklyn) NY-Nassau NY-
New York (Manhattan) NY-Queens NY-Westchester NY-
555 PM EDT Thu Jul 8 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING
FOR SOUTHEASTERN BERGEN, SOUTHEASTERN ESSEX, HUDSON, BRONX, KINGS
(BROOKLYN), CENTRAL NASSAU, NEW YORK (MANHATTAN), QUEENS AND SOUTH
CENTRAL WESTCHESTER COUNTIES...
At 555 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1.5 and 3 inches of rain have
fallen. The expected rainfall rate is 1 to 2 inches in 2 hours.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
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, Jamaica, New Rochelle, Flushing, Mott Haven,
Levittown, Hoboken, East Tremont, Port Chester, Glen Cove,
Plainview, Garden City, Lyndhurst, Syosset, Mineola, Rutherford,
Secaucus, Rye and Westbury.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
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.
&&
LAT...LON 4071 7422 4078 7419 4089 7399 4092 7385
4102 7366 4101 7364 4100 7364 4094 7367
4090 7374 4086 7375 4088 7372 4086 7366
4091 7364 4092 7350 4073 7344 4065 7392
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-2 INCHES IN 2 HOURS
$$
DJ330
WGUS71 KOKX 082255
FFSOKX
Flash Flood Statement
National Weather Service New York NY
655 PM EDT Thu Jul 8 2021
NJC003-013-017-NYC005-047-059-061-081-119-082305-
/O.EXP.KOKX.FF.W.0011.000000T0000Z-210708T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bergen NJ-Essex NJ-Hudson NJ-Bronx NY-Kings (Brooklyn) NY-Nassau NY-
New York (Manhattan) NY-Queens NY-Westchester NY-
655 PM EDT Thu Jul 8 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 7 PM EDT THIS EVENING FOR
SOUTHEASTERN BERGEN, SOUTHEASTERN ESSEX, HUDSON, BRONX, KINGS
(BROOKLYN), CENTRAL NASSAU, NEW YORK (MANHATTAN), QUEENS AND SOUTH
CENTRAL WESTCHESTER COUNTIES...
Flash flooding is no longer expected to pose a threat though
additional rainfall is possible. Please continue to heed remaining
road closures.
A Flash Flood Watch remains in effect until 1200 PM EDT Friday for
portions of southern Connecticut, northeast New Jersey and southeast
New York.
LAT...LON 4071 7422 4078 7419 4089 7399 4092 7385
4102 7366 4101 7364 4100 7364 4094 7367
4090 7374 4086 7375 4088 7372 4086 7366
4091 7364 4092 7350 4073 7344 4065 7392
$$
DJThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 8:02 PM EDT | Special Weather Statement | OKX | Putnam | 43 min |
| Jul 7, 10:43 PM EDT | Special Weather Statement | OKX | Dutchess | 47 min |
| Jul 7, 11:19 PM EDT | Special Weather Statement | OKX | Orange | 56 min |
| Jul 7, 11:34 PM EDT | Special Weather Statement | OKX | Orange, Putnam | 56 min |
| Jul 7, 11:46 PM EDT | Special Weather Statement | OKX | Orange, Putnam, Rockland, Westchester | 44 min |
| Jul 8, 12:18 AM EDT | Areal Flood Advisory | OKX | Orange | 66 min |
| Jul 8, 12:29 AM EDT | Special Weather Statement | OKX | Putnam, Westchester | 46 min |
| Jul 8, 12:44 AM EDT | Areal Flood Advisory | OKX | Orange, Putnam | 62 min |
| Jul 8, 5:08 AM EDT | Tropical Storm Warning | OKX | Nassau, Suffolk | 33 hr |
| Jul 8, 9:23 AM EDT | Areal Flood Advisory | OKX | Orange | 112 min |
| Jul 8, 11:54 AM EDT | Special Weather Statement | OKX | Orange | 66 min |
| Jul 8, 12:59 PM EDT | Special Weather Statement | OKX | Putnam | 46 min |
| Jul 8, 12:59 PM EDT | Special Weather Statement | OKX | Rockland | 46 min |
| Jul 8, 1:24 PM EDT | Severe Thunderstorm Warning | OKX | Rockland | 51 min |
| Jul 8, 2:11 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Rockland, Westchester | 49 min |
| Jul 8, 2:29 PM EDT | Areal Flood Advisory | OKX | Rockland, Westchester | 2 hr |
| Jul 8, 2:53 PM EDT | Special Marine Warning | OKX | 52 min | |
| Jul 8, 2:58 PM EDT | Special Weather Statement | OKX | Nassau, Queens | 47 min |
| Jul 8, 3:10 PM EDT | Small Craft Advisory | OKX | 23 hr | |
| Jul 8, 3:15 PM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 3 hr |
| Jul 8, 3:19 PM EDT | Special Weather Statement | OKX | New York | 41 min |
| Jul 8, 3:49 PM EDT | Special Marine Warning | OKX | 56 min | |
| Jul 8, 4:00 PM EDT | Special Weather Statement | OKX | Nassau | 45 min |
| Jul 8, 4:37 PM EDT | Special Weather Statement | OKX | Bronx, New York | 38 min |
| Jul 8, 4:51 PM EDT | Special Marine Warning | OKX | 24 min | |
| Jul 8, 5:03 PM EDT | Special Weather Statement | OKX | Nassau | 42 min |
| Jul 8, 5:06 PM EDT | Flash Flood Warning | OKX | Bronx, New York, Westchester | 3 hr |
| Jul 8, 5:16 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 44 min |
| Jul 8, 5:38 PM EDT | Areal Flood Advisory | OKX | Nassau, Suffolk | 3 hr |
| Jul 8, 5:59 PM EDT | Special Weather Statement | OKX | Suffolk | 46 min |
| Jul 8, 6:15 PM EDT | Areal Flood Advisory | OKX | Rockland, Westchester | 3 hr |
| Jul 8, 6:40 PM EDT | Special Weather Statement | OKX | Suffolk | 50 min |
| Jul 8, 6:59 PM EDT | Areal Flood Advisory | OKX | Kings, Nassau, New York, Queens | 90 min |
| Jul 8, 7:17 PM EDT | Special Weather Statement | OKX | Nassau | 43 min |
| Jul 8, 3:08 PM EDT | Special Weather Statement | OKX | Bergen | 37 min |
| Jul 8, 3:27 PM EDT | Special Weather Statement | OKX | Essex | 48 min |
| Jul 8, 6:35 PM EDT | Special Weather Statement | OKX | Bergen, Essex, Hudson, Union | 40 min |
| Jul 8, 7:25 PM EDT | River Flood Warning | OKX | Bergen | 12 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.