Alert archive / New Jersey / Flash Flood Warnings in 2021

Flash Flood Warning 38, NWS New York, NY

September 1, 2021Richmond County, New York; 5 counties in New Jersey

NWS New York, NY issued this flash flood warning at Sep 1, 2021, 5:54 PM EDT for Richmond County, New York; 5 counties in New Jersey. It was in force for 6 hr. 43 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, 5:54 PM EDT (21:54 UTC)
Expired
Sep 1, 2021, 11:45 PM EDT
In force
6 hr
Issued by
NWS New York, NY
Area
Storm-based polygon
Emergency
Flash flood emergency
Flood severity
None

Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Richmond County, NY

The radar

The Philadelphia radar (KDIX), 95 km from the middle of the area, began a volume at 21:54 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

TimeReportWhereRemark
Sep 1, 6:12 PM EDTFLASH FLOOD1 Nw East Newark, NJESSEX COUNTY SHERIFFS ARE CLOSING BRANCH BROOK PARK DUE TO FLOODING.
Sep 1, 6:35 PM EDTFLASH FLOODLittle Falls, NJUS46 FLOODED ALL LANES IMPASSIBLE BETWEEN VALLEY ROAD AND CLOE ROAD. ALL LANES CLOSED.
Sep 1, 6:35 PM EDTFLASH FLOODTotowa, NJMCBRIDE AVE AND TOTOWA ROAD CLOSED DUE TO FLOODING.
Sep 1, 6:45 PM EDTFLASH FLOOD1 Ese Annadale, NYHYLAND BVD CLOSED BETWEEN NELSON AVE AND FIELDWAY AVE DUE TO FLOODING.
Sep 1, 6:48 PM EDTFLASH FLOOD1 Nne West Shore Expres, NYVICTORY BLVD IS CLOSED NEAR RICHMOND AVENUE DUE TO FLOODING.
Sep 1, 6:50 PM EDTFLASH FLOODUnion, NJFLOODING ON US 22 EASTBOUND NEAR THE GARDEN STATE PARKWAY. ALL LANES ARE CLOSED.
Sep 1, 7:00 PM EDTFLASH FLOOD1 Nw Tottenville, NYNORTH BRIDGE STREET CLOSED DUE TO FLOODING.
Sep 1, 7:27 PM EDTFLASH FLOODHarrison, NJWATER RESCUE ONGOING ON ESSEX STREET AT FIRST STREET.
Sep 1, 7:30 PM EDTFLASH FLOODNorth Plainfield, NJTHE GAUGE ON STONY BROOK AT NORTH PLAINFIELD (STBN4) REACHED FLOOD STAGE AT 730 PM 9/1, CRESTING AT 8.85 FEET (MINOR FLOODING) AT 945 PM 9/1.
Sep 1, 7:40 PM EDTFLASH FLOOD1 S Newark Airport, NJALL LANES CLOSED IN BOTH DIRECTIONS DUE TO FLOODING ON NORTH AVE AT KAPKOWSKI ROAD TO MCLESTER STREET.
Sep 1, 7:40 PM EDTFLASH FLOODBelleville, NJPEOPLE TRAPPED IN CARS IN FLOOD WATERS ON MILL STREET NEAR THE SECOND RIVER.
Sep 1, 7:45 PM EDTFLASH FLOODJersey City, NJFLOODING JERSEY AVENUE SOUTHBOUND ALL LANES CLOSED.
Sep 1, 7:52 PM EDTFLASH FLOOD1 E Newark, NJWATER RESCUE ONGOING FOR VEHICLE IN FLOOD WATERS ON SOUTH STREET. OCCUPANT CURRENTLY ON ROOF OF CAR. FIRE DEPARTMENT RESPONDING WITH RESCUE BOAT.
Sep 1, 8:09 PM EDTFLASH FLOOD1 Nw Millburn, NJWATER RESCUE ON WHITE OAK RIDGE ROAD AT MOHAWK ROAD WITH VEHICLE STRANDED IN FLOODING.
Sep 1, 8:11 PM EDTFLASH FLOOD1 S Paramus, NJALL LANES CLOSED DUE TO FLOODING ON NJ 17 SOUTHBOUND NORTH OF CENTURY ROAD.
Sep 1, 8:11 PM EDTFLASH FLOOD1 Wnw Elizabeth, NJALL LANES CLOSED ON US 1 & 9 AT GRAND STREET DUE TO FLOODING.
Sep 1, 8:15 PM EDTFLASH FLOOD3 Ne Watchung, NJTHE GAUGE ON GREEN BROOK AT SEELEY MILLS (GBKN4) REACHED FLOOD STAGE AT 815 PM 9/1, CRESTING AT 9.05 FEET (MINOR FLOODING) AT 915 PM 9/1.
Sep 1, 8:26 PM EDTFLASH FLOODLivingston, NJMULTIPLE RESCUES NEEDED FOR OCCUPIED CARS STRANDED IN FLOOD WATERS TOWN WIDE.
Sep 1, 8:28 PM EDTFLASH FLOOD2 Sw North Arlington, NJ*** 7 INJ *** KEARNY POST OFFICE ROOF COLLAPSE WITH OCCUPANTS INSIDE. SEVEN INJURIES REPORTED. THERE ARE ALSO MULTIPLE ROADS IN THE AREA WITH SIGNIFICANT FLOODING.
Sep 1, 8:55 PM EDTFLASH FLOOD1 N Glen Rock, NJFIRE DEPARTMENT RESPONDING TO BASEMENT FLOODING ENDANGERING ELECTRICAL PANEL ON HAMILTON AVENUE.
Sep 1, 8:58 PM EDTFLASH FLOODKearny, NJMULTIPLE ROADS THROUGHOUT TOWN CLOSED DUE TO FLOODING INCLUDING PASSAIC AVE, HARRISON AVE NEAR WALMART, AND ROUTE 7.
Sep 1, 9:00 PM EDTFLASH FLOOD1 Nw Cranford, NJEMS REPORTING MULTIPLE WATER RESCUES ONGOING ACROSS THE COUNTY DUE TO SIGNIFICANT FLASH FLOODING. A FEW EVACUATIONS ARE OCCURRING IN THE COUNTY.
Sep 1, 9:00 PM EDTFLASH FLOOD2 Ne Todt Hill, NYWATER FLOODING INTO BASEMENTS OF MANY HOMES. SEWER MAINS OVERFLOWING.
Sep 1, 9:02 PM EDTFLASH FLOODLivingston, NJNUMEROUS WATER RESCUES ONGOING IN LIVINGSTON. RESCUE BOAT IS PULLING OCCUPANTS TO SAFETY ON WALNUT STREET, E. HOBART GAP ROAD, AND OLD SHORT HILLS ROAD.
Sep 1, 9:13 PM EDTFLASH FLOOD1 Nnw Westerleigh, NYCARS STUCK IN FLOODWATERS AT CRYSTAL AND COLLEGE AVENUES.
Sep 1, 9:15 PM EDTFLASH FLOODHaledon, NJBARBOUR STREET CLOSED DUE TO FLOODING.
Sep 1, 9:15 PM EDTFLASH FLOOD1 Ene Riverdale, NJTHE GAUGE ON THE PEQUANNOCK RIVER AT RIVERDALE (RDLN4) REACHED FLOOD STAGE AT 915 PM 9/1, CRESTING AT 8.99 FEET (MINOR FLOODING) AT 100 AM 9/2.
Sep 1, 9:22 PM EDTFLASH FLOODWycoff, NJMULTIPLE WATER RESCUES ONGOING ON ROUTE 208 AT RUSSELL AVE.
Sep 1, 9:25 PM EDTFLASH FLOOD2 Nw Kinnelon, NJTHE GAUGE ON THE PEQUANNOCK RIVER AT MACOPIN (MCPN4) REACHED FLOOD STAGE AT 925 PM 9/1, CRESTING AT 5.99 FEET (MINOR FLOODING) AT 410 AM 9/2.
Sep 1, 9:30 PM EDTFLASH FLOODWestwood, NJLOCAL ROADS CLOSED. HOUSES FLOODING WITH WATER IN BASEMENTS.
Sep 1, 9:36 PM EDTFLASH FLOODHo-Ho-Kus, NJWATER RESCUES ONGOING FOR SEVERAL OCCUPIED STRANDED CARS ON ROUTE 17 NEAR RACE TRACK ROAD.
Sep 1, 9:37 PM EDTFLASH FLOOD2 Nw Huguenot, NYNUMEROUS CARS UNDER WATER ON THE WEST SHORE EXPRESSWAY. OCCUPANTS STANDING ON ROOFS OF CARS WAITING TO BE RESCUED.
Sep 1, 9:37 PM EDTFLASH FLOODNewark Airport, NJSIGNIFICANT FLOODING OCCURRING ON THE GROUND LEVEL OF TERMINAL B. FLOODING OCCURRING ON THE BAGGAGE LEVEL AS WELL.
Sep 1, 9:40 PM EDTFLASH FLOOD1 Nne Livingston, NJBASEMENT AND GARAGE FLOODING.
Sep 1, 9:40 PM EDTFLASH FLOODPaterson, NJSIGNIFICANT FLOODING ON 20TH AVENUE IN PATERSON. SEVERAL CARS SUBMERGED.
Sep 1, 9:50 PM EDTFLASH FLOODWestwood, NJPROSPECT AVE, OLD HOOK ROAD, BROADWAY ALL CLOSED WITH STREET FLOODING, CARS WITH OCCUPANTS TRAPPED.
Sep 1, 9:59 PM EDTFLASH FLOOD1 N Englewood, NJBRIDGE AT WESTMORE GARDENS KNOCKED OFF FOUNDATION DUE TO RISING WATERS OF OVERPECK CREEK. TWO CARS CRASHED INTO BRIDGE.
Sep 1, 10:00 PM EDTFLASH FLOOD1 Se Westfield, NJWATER POURING INTO BASEMENT THROUGH WINDOW.
Sep 1, 10:00 PM EDTFLASH FLOODScotch Plains, NJMULTIPLE ROADWAYS FLOODED WITH MULTIPLE WATER RESCUES ON ROUTE 22 BETWEEN PARK AVE AND GLENSIDE AVE. ROADWAY IS CLOSED.
Sep 1, 10:12 PM EDTFLASH FLOODFair Lawn, NJCAR STUCK IN 2.5 FEET OF WATER AT INTERSECTION OF BERDEN AVENUE AND SUNNYSIDE DRIVE. FLOODING ON MULTIPLE ROADS THROUGH THE TOWN.
Sep 1, 10:42 PM EDTFLASH FLOODJersey City, NJAT LEAST 13 CARS SUBMERGED IN FLOOD WATERS ON CORNELISON AVE IN JERSEY CITY.
Sep 1, 11:27 PM EDTFLASH FLOOD1 Ene Park Ridge, NJGRAND AVENUE AND MEMORIAL DRIVE BRIDGE IS FLOODED. ROAD IMPASSIBLE. GRAND AVENUE CLOSED AT KINDERKAMACK AND PASCACK ROAD CLOSED AT MILL ROAD.
Sep 1, 11:40 PM EDTFLASH FLOOD1 Ene Mountainside, NJFLOODING ON ROLLING ROCK ROAD. ROAD IMPASSABLE.

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, 9.9 hours before the alert went out and 120 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2021-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 51 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
51 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1274 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
201 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

764 
WGUS51 KOKX 012154
FFWOKX
NJC003-013-017-031-039-NYC085-012345-
/O.NEW.KOKX.FF.W.0038.210901T2154Z-210901T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
554 PM EDT Wed Sep 1 2021

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...
  Richmond (Staten Island) County in southeastern New York...

* Until 745 PM EDT.

* At 554 PM EDT, Doppler radar indicated heavy rain moving north 
  across the warned area. Between 0.5 and 1 inch of rain has fallen. 
  Additional rainfall amounts of 1 to 2 inches are possible in the 
  warned area. Flash flooding is expected to begin shortly.

  HAZARD...Flash flooding caused by heavy rain.

  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, Paterson, Elizabeth, Passaic, Bayonne, Wayne, 
  Plainfield, Bloomfield, Hackensack, Linden, Orange, Bergenfield, 
  Paramus, West Milford, Ridgewood, Summit, Lyndhurst, Millburn and 
  Rutherford.

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.

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 4075 7436 4091 7433 4091 7427 4100 7430
      4102 7443 4105 7445 4104 7450 4109 7450
      4120 7437 4099 7389 4076 7403 4065 7406
      4060 7404 4052 7412 4049 7428 4056 7422
      4059 7420 4060 7446 4066 7440 4067 7446

FLASH FLOOD...RADAR INDICATED

$$

Fig
2 follow-up statements
337 
WGUS51 KOKX 012334
FFWOKX
NJC003-013-017-031-039-NYC085-020145-
/O.EXT.KOKX.FF.W.0038.000000T0000Z-210902T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
734 PM EDT Wed Sep 1 2021

The National Weather Service in Upton has extended the

* 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...
  Richmond (Staten Island) County in southeastern New York...

* Until 945 PM EDT.

* At 734 PM EDT, Doppler radar indicated 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 already occurring.

  HAZARD...Life threatening flash flooding. Heavy rain 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, Paterson, Elizabeth, Passaic, Bayonne, Wayne, 
  Plainfield, Bloomfield, Hackensack, Linden, Orange, Bergenfield, 
  Paramus, West Milford, Ridgewood, Summit, Lyndhurst, Millburn and 
  Rutherford.

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.

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 4075 7436 4091 7433 4091 7427 4100 7430
      4102 7443 4105 7445 4104 7450 4109 7450
      4120 7437 4099 7389 4076 7403 4065 7406
      4060 7404 4052 7412 4049 7428 4056 7422
      4059 7420 4060 7446 4066 7440 4067 7446

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Fig
051 
WGUS51 KOKX 020041
FFWOKX
NJC003-013-017-031-039-NYC085-020345-
/O.EXT.KOKX.FF.W.0038.000000T0000Z-210902T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
841 PM EDT Wed Sep 1 2021

...FLASH FLOOD EMERGENCY FOR NORTHEAST NEW JERSEY...

The National Weather Service in Upton has extended the

* 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...
  Richmond (Staten Island) County in southeastern New York...

* Until 1145 PM EDT.

* At 841 PM EDT, Doppler radar indicated heavy rain across the 
  warned area. Between 2 and 5 inches of rain have fallen. 
  Additional rainfall amounts of 1.5 to 3 inches are possible in the 
  warned area. Flash flooding is already occurring.

  This is a FLASH FLOOD EMERGENCY for Northeast New Jersey. 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, Paterson, Elizabeth, Passaic, Bayonne, Wayne, 
  Plainfield, Bloomfield, Hackensack, Linden, Orange, Bergenfield, 
  Paramus, West Milford, Ridgewood, Summit, Lyndhurst, Millburn and 
  Rutherford.

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 4075 7436 4091 7433 4091 7427 4100 7430
      4102 7443 4105 7445 4104 7450 4109 7450
      4120 7437 4099 7389 4076 7403 4065 7406
      4060 7404 4052 7412 4049 7428 4056 7422
      4059 7420 4060 7446 4066 7440 4067 7446

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CATASTROPHIC

$$

Fig

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 1, 4:05 AM EDTGale WarningOKX31 hr
Sep 1, 5:24 AM EDTCoastal Flood AdvisoryOKXSuffolk17 hr
Sep 1, 9:36 AM EDTSpecial Marine WarningOKX54 min
Sep 1, 10:18 AM EDTSpecial Marine WarningOKX87 min
Sep 1, 10:30 AM EDTSpecial Marine WarningOKX60 min
Sep 1, 11:45 AM EDTSpecial Marine WarningOKX90 min
Sep 1, 1:15 PM EDTSpecial Marine WarningOKX90 min
Sep 1, 1:40 PM EDTAreal Flood AdvisoryOKXOrange, Putnam114 min
Sep 1, 2:43 PM EDTSpecial Marine WarningOKX62 min
Sep 1, 3:34 PM EDTFlash Flood WarningOKXOrange8 hr
Sep 1, 4:43 PM EDTRiver Flood WarningOKXOrange, Rockland43 hr
Sep 1, 6:51 PM EDTFlash Flood WarningOKXBronx, Kings, Nassau, New York, Putnam, Queens and 3 more5 hr
Sep 1, 4:41 PM EDTRiver Flood WarningOKXBergen29 hr
Sep 1, 7:29 PM EDTSevere Thunderstorm WarningOKXUnion46 min

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.