Extremely heavy rainfall associated with the remnants of Hurricane Ida overspread northeast New Jersey during the evening of September 1 and continued through the early morning hours of September 2. Rainfall totals ranged from 5-8+ inches across much of the region, with much of that rain falling in just a few hours.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OKX wrote it up.
Extremely heavy rainfall associated with the remnants of Hurricane Ida overspread northeast New Jersey during the evening of September 1 and continued through the early morning hours of September 2. Rainfall totals ranged from 5-8+ inches across much of the region, with much of that rain falling in just a few hours. The ASOS at Newark Airport recorded 8.44 inches of rain, while the ASOS at Teterboro Airport recorded 7.14 inches. A COOP observer in Harrison recorded 8.72 inches of rain. This resulted in widespread flash flooding leading to numerous road closures and water rescues in addition to extensive river flooding. Eight people died as a result of the flash flooding and one person remains missing.
The local office's own words before the first event, 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 the first event at Sep 1, 3:53 PM EST, 1 hour 19 minutes earlier.
Area Forecast Discussion
National Weather Service New York NY
453 PM EDT Wed Sep 1 2021
.SYNOPSIS...
The remnants of Ida will pass through tonight with high pressure
building in behind the storm Thursday into Friday, lingering through
Saturday. A warm front will move north on Sunday, followed by a cold
front late Sunday night into Monday. High pressure may return
briefly late Monday. A cold front will then approach towards mid
week.
&&
.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
Steady rain spreads eastward across the area tonight as the center
of Ida's remnants shift through the forecast area. High moisture
content and plenty of upward forcing will lead to periods of heavy
rain. A flash flood watch remains in effect as flash flooding will
be likely, and significant flooding will be possible. See the
hydrology section below for more details.
The other concern is the threat for severe weather, primarily
high wind gusts. Helicity is currently being enhanced over
roughly the southern half of the forecast area near a warm front
as 0-1km storm-relative helicity values range from 100-300
m2/s2. CAPE is still relatively low, however it should rise a
bit as the center of the storm heads closer to us this evening.
A low risk of a tornado will therefore exist tonight.
NBM was used for temperatures.
&&
.SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/...
Chances of lingering showers remain east of the city Thursday
morning, with all of the forecast likely dry by noontime. High
pressure then builds in behind the storm with breezy conditions and
high temps mostly in the 70s. Continued dry Thursday night with
surface high pressure slowly building in. Cyclonic flow will still
remain aloft, and some guidance suggests a light shower possible
over the eastern half of the forecast area, but will continue with a
dry forecast for now.
&&
.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
A strong synoptic pressure gradient will exist between exiting
low pressure to the northeast and building high pressure to the
northwest to begin the day on Friday. Look for a breezy day on
Friday with mainly clear skies. Low level winds out of the north
will lead to much lower humidity. This should lead to an
excellent start to the weekend with seasonable temperatures and
comfortable humidity levels. High pressure settles over the area
Friday night into Saturday morning, before the high begins to
push offshore later Saturday into Saturday night. A warm front
off to the west and southwest will then lift northeast and get
through the area early on Sunday. This should put the region in
the warm sector into the day on Sunday leading to warmer
temperatures and an increase in humidity. A frontal boundary
will attempt to approach for late in the weekend. There remains
some uncertainty around the exact timing with this feature. A
chance to slight chance of some showers should cover the time
period of Sunday and Sunday night rather well. Northwestern
sections will see a slighter higher likelihood with any showers.
The front attempts to swing through by Monday morning.
After temperatures run a few degrees below normal for Friday
and Saturday, temperatures will then climb to slightly above
normal into Sunday and Monday of next week. Much of the global
guidance now is showing another quick moving system into Tuesday
as weak low pressure and its associated cold front approaches.
This may bring a few showers, and possibly a few thunderstorms
to the area later Tuesday.
&&
.AVIATION /21Z WEDNESDAY THROUGH MONDAY/...
The remnants of Ida approach from the southwest into this evening
and pass through the terminals tonight. The low quickly moves into
the Canadian Maritimes Thursday as high pressure begins to build to
the west.
Periodic -SHRA/+SHRA into early this evening with varying flight
categories, generally MVFR to VFR at times. This evening widespread
MVFR conditions expected with IFR possible at times, especially with
heavier showers and thunderstorms. LIFR is also a possibility.
Timing of thunderstorms is generally 22Z to 06Z. Showers end toward
10Z to 12Z, with MVFR. Conditions improve to VFR Thursday morning.
Winds NE 10 to 15 kt, with gusts up 20 kt developing. Some
uncertainty with wind direction for far southern terminals where
winds may have more of a southerly component this evening, depending
on the track of the remnants of Ida. Winds shift to N and NW late
tonight, increasing to around 15 kt with gusts 25 to 30 kt. Gusty N
to NW winds continue Thursday.
...Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
Timing of category changes is uncertain with timing differences of
around 2 hours possible. Also uncertainty with the timing, and
strength of convection late this afternoon into this evening. A
period of SE to S winds is possible early this evening. All the
uncertainties are in association of the movement of a warm front,
and the remnants of Ida.
.OUTLOOK FOR 18Z THURSDAY THROUGH MONDAY...
.Thursday afternoon...VFR with N-NW gusts 25-30 kt.
.Friday-Saturday...VFR.
.Sunday...Chc MVFR and shra.
Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90
&&
.MARINE...
The center of the remnants of Ida will be passing through the waters
during the overnight hours tonight with winds ramping up, and gale
force gusts likely across all waters. The center of the storm will
be off to the east by Thursday morning with N-NW winds in its wake.
Might need to trim back the end time of the gale warning as per
latest guidance, but will leave the end time unchanged for now.
Otherwise, seas will remain elevated up to advisory levels through
the day Thursday and into Thursday night. Advisory-level gusts will
be possible through at least the afternoon for most of the waters.
Marginal SCA conditions will persist into much of Friday out on the
ocean, otherwise conditions will continue to settle down into the
weekend. High pressure will settle over the waters Friday night into
Saturday leading to relatively tranquil conditions. By late Sunday
and into Sunday night a south to southwesterly flow will increase
resulting in marginal SCA conditions returning to the ocean waters
and possibly the eastern bays.
&&
.HYDROLOGY...
***SIGNIFICANT RAINFALL EXPECTED***
***FLASH FLOOD WATCH THIS MORNING INTO THURSDAY AFTERNOON***
An additional 2 to 5 inches, and possibly up to around 6 inches of
rain is expected tonight. The heaviest rainfall will likely be
before midnight to 3am for the western half of the forecast
area with the threat of heavy rainfall continuing toward
daybreak mainly east of the city thereafter. The higher amounts
will be generally across NE NJ, the Lower Hudson Valley, and
Southern Connecticut. Several rivers and streams are expected to
see minor to moderate flooding starting this evening, with
major flooding currently forecast for a few spots late tonight
and Thursday - including parts of the Saddle River in NE NJ, and
the Yantic River in SE CT. For urban areas, a significant
flooding threat exists tonight with impacts including the
potential for several road closures. Residual river flooding is
expected into at least Thursday night for the slower-
responding/larger rivers.
Mainly dry conditions take place for Friday and last through early
next week with no additional hydrologic impacts expected.
&&
.TIDES/COASTAL FLOODING...
A moderate risk of rip currents is expected Thursday and Friday for
the Atlantic Ocean beaches.
Some beach erosion and flooding is possible during the times of high
tide tonight into Thursday, with breaking surf building to 4 to 6 ft
and a strong e to w sweep. Dune impacts should be minor and limited.
Localized minor coastal flood impacts are possible for the most
vulnerable coastal locales, but overall it is a limited threat as 2
1/2 to 3 1/2 ft surge is needed Thu morning just for minor impacts.
The elevated water levels coinciding with heavy rain could
exacerbate flooding for coastal and tidally affected riverine
communities. A few locations in particular to keep an eye on for the
next few evening high tides is along Peconic Bay where an east-
northeast fetch may lead to minor coastal flooding, a Coastal Flood
Advisory is now in effect exclusively for Peconic Bay for this
evening's high tide due to elevated water tables.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...Flash Flood Watch through Thursday afternoon for CTZ005>012.
NY...Flash Flood Watch through Thursday afternoon for NYZ067>075-
078>081-176>179.
Coastal Flood Advisory until 10 PM EDT this evening for NYZ079-
081.
NJ...Flash Flood Watch through Thursday afternoon for NJZ002-004-
006-103>108.
MARINE...Gale Warning until 2 PM EDT Thursday for ANZ331-332-340-345-
355.
Gale Warning until 10 AM EDT Thursday for ANZ335-338.
Gale Warning until 6 PM EDT Thursday for ANZ350-353.
&&
SYNOPSIS...JC/JE
NEAR TERM...JC
SHORT TERM...JC
LONG TERM...JE
AVIATION...MET
MARINE...JC/JE
HYDROLOGY...JC/JE
TIDES/COASTAL FLOODING...JC/FigHazardous Weather Outlook National Weather Service New York NY 445 AM EDT Wed Sep 1 2021 NJZ004-006-104>108-NYZ071>075-078>081-176>179-020845- Eastern Passaic-Hudson-Eastern Bergen-Western Essex-Eastern Essex- Western Union-Eastern Union-Southern Westchester- New York (Manhattan)-Bronx-Richmond (Staten Island)-Kings (Brooklyn)- Northwest Suffolk-Northeast Suffolk-Southwest Suffolk- Southeast Suffolk-Northern Queens-Northern Nassau-Southern Queens- Southern Nassau- 445 AM EDT Wed Sep 1 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THURSDAY AFTERNOON... This Hazardous Weather Outlook is for northeast New Jersey and southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. In addition, there will be potential for thunderstorms late this afternoon into tonight, some of which may become severe with damaging winds. A brief isolated tornado cannot be ruled out. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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-NJZ002-103-NYZ067>070-020845- Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Fairfield-Southern New Haven- Southern Middlesex-Southern New London-Western Passaic- Western Bergen-Orange-Putnam-Rockland-Northern Westchester- 445 AM EDT Wed Sep 1 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THURSDAY AFTERNOON... This Hazardous Weather Outlook is for southern Connecticut, northeast New Jersey and southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. In addition, there will be potential for thunderstorms late this afternoon into tonight, some of which may become severe with damaging winds. A brief isolated tornado cannot be ruled out. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. ANZ331-332-340-345-355-020845- 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- Peconic and Gardiners Bays- South Shore Bays from Jones Inlet through Shinnecock Bay- Sandy Hook NJ to Fire Island Inlet NY out 20 nm- 445 AM EDT Wed Sep 1 2021 ...GALE WARNING IN EFFECT FROM 6 PM THIS EVENING TO 2 PM EDT THURSDAY... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. In addition, there will be potential for thunderstorms late this afternoon into tonight, some of which may become severe with damaging winds. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .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. ANZ335-338-020845- Long Island Sound West of New Haven CT/Port Jefferson NY- New York Harbor- 445 AM EDT Wed Sep 1 2021 ...GALE WARNING IN EFFECT FROM 6 PM THIS EVENING TO 10 AM EDT THURSDAY... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. In addition, there will be potential for thunderstorms late this afternoon into tonight, some of which may become severe with damaging winds. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .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. ANZ350-353-020845- Moriches Inlet NY to Montauk Point NY out 20 nm- Fire Island Inlet NY to Moriches Inlet NY out 20 nm- 445 AM EDT Wed Sep 1 2021 ...GALE WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM EDT THURSDAY... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. In addition, there will be potential for thunderstorms late this afternoon into tonight, some of which may become severe with damaging winds. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .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.
The Philadelphia radar (KDIX), 91 km away, was scanning. The volume nearest the first event began at 22:13 UTC.
52 flash flood, 2 flood. Local standard time, as filed.
The Essex County Sheriff's Department was closing Branch Brook Park in Newark due to flooding.
All lanes of US46 were closed due to flooding between Valley Road and Clove Road in Little Falls.
The intersection of McBride Avenue and Totowa Road in Totowa was closed due to flooding.
All eastbound lanes of US22 were closed due to flooding near the Garden State Parkway in Union.
A water rescue was ongoing on Essex Street at the intersection with First Street in Harrison.
People were trapped in their cars in flood waters on Mill Street near the Second River in Belleville.
All lanes were closed in both directions on North Avenue between Kapkowski Road and McLester Street in Elizabeth due to flooding.
All southbound lanes of Jersey Avenue in Jersey City were closed due to flooding.
A water rescue was ongoing for a vehicle trapped in flood waters on South Street in Newark. The occupant was on the roof of the car and the Fire Department was responding with a rescue boat.
The Peckman River at Ozone Avenue in Verona rose above its minor flood stage of 3.5 feet at 8:00pm EDT. It then continued to rise, surpassing moderate flood stage (4.0 feet) at 8:10pm EDT, then major flood stage (5.0 feet) at 8:25pm EDT before cresting at a height of 6.20 feet at 9:20pm EDT. The river then slowly fell over the next few hours, returning to its banks at 12:40am EDT on September 2nd.
A water rescue was ongoing at the intersection of White Oak Ridge Road and Mohawk Road in Millburn with a vehicle stranded in flood waters.
The Third River at Bloomfield rose above its minor flood stage of 6.0 feet at 8:10pm EDT. The river then continued to rise, surpassing moderate flood stage (8.0 feet) at 8:45pm EDT and major flood stage (9.0 feet) at 9:05pm EDT before cresting at a height of 10.14 feet at 11:30pm EDT. After cresting, the river quickly fell back below minor flood stage by 3:45am EDT September 2nd. The crest of 10.14 feet is the highest on record for this location, exceeding the previous record crest of 9.97 feet in September 1999 due to Hurricane Floyd.
All southbound lanes of NJ Route 17 were closed due to flooding north of Century Road in Paramus.
All were closed on US Routes 1&9 at East Grand Street in Elizabeth due to flooding.
Multiple rescues were needed across Livingston for occupied cars stranded in flood waters.
Seven people were injured when the roof of the U.S. Postal Service's bulk mail facility on Harrison Avenue in Kearny collapsed due to heavy rain. 300 people were inside at the time. There were also multiple roads in the area with significant flooding.
The Rahway River near Springfield rose above its minor flood stage of 7.0 feet at 8:30pm EDT. It then continued to rise, surpassing moderate flood stage (8.5 feet) at 9:15pm EDT and major flood stage (10.5 feet) at 11:45pm EDT before cresting at a height of 10.81 feet at 1:15am EDT on September 2nd. The crest of 10.81 feet is the second highest on record, behind only a crest of 10.88 feet in August 2011 associated with Tropical Storm Irene. The river then gradually fell through the overnight hours, eventually fallign back below minor flood stage at 12:45pm EDT on September 2nd.
The Fire Department was responding to a report of basement flooding endangering and electrical panel on Hamilton Avenue in Glen Rock.
Multiple roads were closed due to flooding in town of Kearny including Passaic Avenue, Harrison Avenue near the Walmart, and Route 7.
EMS reported multiple water rescues ongoing across Union County due to significant flash flooding. A few evacuations were occurring as well.
The Saddle River at Upper Saddle River rose above its minor flood stage of 4.5 feet at 9:00pm EDT. It then continued to rise, reaching moderate flood stage (5.0 feet) at 9:15pm EDT before cresting at a height of 5.43 feet at 10:45pm EDT. This crest was the second highest on record, falling just short of the record crest of 5.64 feet in September 1999 associated with Hurricane Floyd. The river then fell back below minor flood stage at 1:45am EDT on September 2nd.
Numerous water rescues were ongoing in Livingston. Rescue boats were pulling occupants to safety on Walnut Street, East Hobart Gap Road, and Old Short Hills Road.
Barbour Street in Haledon was closed due to flooding.
The Pascack River at Park Ridge rose above its minor flood stage of 5.2 feet at 9:15pm EDT. It then continued to rise, surpassing moderate flood stage (6.2 feet) at 9:45pm EDT and major flood stage (7.2 feet) at 11:30pm EDT. The river then crested at a height of 7.44 feet at 12:15am EDT September 2nd. The river then gradually receded overnight, falling back below minor flood stage at 4:30am EDT September 2nd.
Multiple water rescues were occurring on Route 208 at Russell Avenue in Wycoff.
Local roads were closed in Westwood due to flooding. Houses were flooding with water entering basements.
The Saddle River at Lodi rose above its minor flood stage of 6.0 feet at 9:30pm EDT. It then continued to rise, surpassing moderate flood stage (7.0 feet) at 10:00pm EDT and major flood stage (8.0 feet) at 11:00pm EDT before cresting at a height of 12.57 feet at 9:00am EDT on September 2nd. The river then gradually receded, eventually falling below minor flood stage at 8:00pm EDT on September 2nd. The crest of 12.57 feet is the fourth highest on record at this location.
The Saddle River at Ridgewood rose above its minor flood stage of 5.0 feet at 9:30pm EDT. The river then continued to rise, surpassing moderate flood stage (6.0 feet) at 10:00pm EDT and major flood stage (7.0 feet) at 10:45pm EDT before cresting at a height of 12.01 feet at 12:45am EDT on September 2nd. The river then gradually fell overnight, eventually receding below minor flood stage again at 6:15am EDT September 2nd.
A 55 year old man was found dead on Ridgewood Road in the vicinity of Berkeley Road in Maplewood due to flooding. He is believed to have been swept away by flood waters while attempting to remove debris from drains in the area.
A 66 year old man and his 46 year old daughter died as a result of flooding after going into the basement of their home on Lincoln Place in Irvington to secure it as the Elizabeth River began to overflow.
A car carrying two Seton Hall University students was overcome by flood waters on Main Avenue near Benson Avenue in Passaic. The body of one of the students, a 21 year old man, was later found in Newark after being swept down the Passaic River.
A car carrying two Seton Hall University students was overcome by flood waters on Main Avenue near Benson Avenue in Passaic. The body of one of the students, an 18 year old woman, was later found in Kearny after being swept down the Passaic River.
An unidentified person died by electrocution as a result of flooding in Essex County.
One person died at a hospital in Bergen County after pushing their car through flood waters and suffering a medical event.
Water rescues were ongoing for several occupied stranded cars on Route 17 near Racetrack Road in Ho-Ho-Kus.
Significant flooding was occurring on the ground level of Terminal B at Newark Airport. Flooding was occurring on the baggage level as well.
Basement and garage flooding were reported in Livingston.
Significant flooding was reported on 20th Avenue in Paterson with several cars submerged.
The Pascack River at Westwood rose above its minor flood stage of 5.0 feet at 9:45pm EDT. It then continued to rise, surpassing moderate flood stage (6.0 feet) by 1:00am EDT September 2nd and major flood stage (6.5 feet) at 3:15am EDT. The river crested at a height of 7.42 feet at 5:15am EDT September 2nd. The river receded throughout the morning, falling back below flood stage at 11:15am EDT September 2nd.
Prospect Avenue, Old Hook Road, and Broadway were all closed due to flooding and cars with occupants trapped.
The bridge at Westmore Gardens in Englewood was knocked off its foundation due to rising waters from Overpeck Creek. Two cars then crashed into the bridge.
Water was pouring into a basement through a window in Westfield.
Multiple roads were flooded in Scotch Plains with multiple water rescues reported on Route 22 between Park Avenue and Glenside Avenue. Route 22 was closed.
The Ramapo River near Mahwah rose above its minor flood stage of 8.0 feet at 10:00pm EDT. It then continued to rise, climbing above moderate flood stage (9.0 feet) at 11:15pm before cresting at a height of 10.46 feet at 3:00am EDT on September 2nd. The river then slowly fell over the next day, with water levels eventually falling below minor flood stage at 10:45am EDT on September 3rd. This was the 11th highest crest on record at this location.
Four people died due to flooding at the Oakwood Plaza apartment complex on Irvington Avenue in Elizabeth. All four people were found in one apartment and included a 74 year old woman, her 71 year old husband, their 38 year old son, and a 33 year old neighbor.
An 83 year old man was found on Chestnut Street in Union Township near Overlook Hospital. He is believed to have drowned after his car got stuck and he walked out into 3-4 feet of water.
A car was stuck in 2.5 feet of water at the intersection of Berdan Avenue and Sunnyside Drive in Fair Lawn. Additional flooding was reported on multiple roads across the town.
The Passaic River at Dundee Dam in Clifton rose above its minor flood stage of 4.5 feet at 10:15pm EDT and crested at a height of 4.98 feet at 12:45am EDT September 2nd. The river then fell back below flood stage at 3:45am EDT on September 2nd. Flooding from the Passaic River resulted in three fatalities. A 70 year old man died when his car became stranded in 6 feet of water at the intersection of Passaic Avenue and Lackawana Place in Passaic.
At least 13 cars were submerged in flood waters on Cornelison Avenue in Jersey City.
The Hackensack River at New Milford rose above its minor flood stage of 6.0 feet at 11:15pm EDT. It then continued to quickly rise to moderate flood stage (8.0 feet) by 1:30am EDT September 2nd. The river ultimately rose above major flood stage (10.0 feet) at 5:00am EDT before cresting at a height of 11.03 feet at 9:15am EDT September 2nd. Thereafter the river gradually receded, falling below flood stage at 7:30am EDT September 3rd.
The crest of 11.03 feet is the third highest on record behind crests of 12.36 feet in April 2007 and 11.45 feet in September 1999.
Grand Avenue in Park Ridge was impassable due to flooding at the Memorial Drive bridge. In addition, Grand Avenue at Kinderkamack Road and Pascack Road and Mill Road were also closed due to flooding.
The Hackensack River at River Vale exceeded its minor flood stage of 5.5 feet at 11:30pm EDT. The river then continued to rise quickly, surpassing moderate flood stage (6.5 feet) by 12:15am EDT September 2nd and major flood stage (8.0 feet) by 12:30am EDT. The river then crested at a height of 11.05 feet at 4:00am EDT September 2nd. After falling through much of the morning, the river experienced a secondary crest of 10.73 feet at 3:45pm EDT September 2nd. The river did not fall back below flood stage until 11:45am EDT on September 3rd.
The crest of 11.05 feet is the third highest on record at this location behind crests of 12.26 feet in August 2011 and 12.19 feet in April 2007.
Rolling Rock Road in Mountainside was impassable due to flooding.
Canal Street in Passaic was covered with several feet of water with water up to car roofs.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Flash Flood, Essex | 2021-09-01 | 55 | Male | In Water | Direct |
| Flash Flood, Essex | 2021-09-01 | 66 | Male | Permanent Home | Direct |
| Flash Flood, Essex | 2021-09-01 | 46 | Female | Permanent Home | Direct |
| Flash Flood, Essex | 2021-09-01 | 21 | Male | Vehicle/Towed Trailer | Direct |
| Flash Flood, Hudson | 2021-09-01 | 18 | Female | Vehicle/Towed Trailer | Direct |
| Flash Flood, Essex | 2021-09-01 | Unknown | Indirect | ||
| Flash Flood, Bergen | 2021-09-01 | Vehicle/Towed Trailer | Direct | ||
| Flash Flood, Union | 2021-09-01 | 72 | Female | Permanent Home | Direct |
| Flash Flood, Union | 2021-09-01 | 38 | Male | Permanent Home | Direct |
| Flash Flood, Union | 2021-09-01 | 33 | Female | Permanent Home | Direct |
| Flash Flood, Union | 2021-09-01 | 74 | Male | Permanent Home | Direct |
| Flash Flood, Union | 2021-09-01 | 83 | Male | Vehicle/Towed Trailer | Direct |
| Flash Flood, Passaic | 2021-09-01 | 70 | Male | Vehicle/Towed Trailer | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Jersey in 2021Every state in 2021This day in weather historyWarnings in New Jersey, September 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 987113, 987114, 987115, 987116, 987117, 987119, 987120, 987121, 987122, 987204, 987123, 987302, 987124, 987125, 987126, 987127, 987284, 987128, 987129, 987130, 987225, 987132, 987139, 987280, 987142, 987144, 987220, 987298, 994612, 994613, 994614, 994615, 994616, 994617, 987146, 987148, 987149, 987150, 987627, 987156, and more.