New Jersey, 2018

Flash Flooding in New Jersey, October 2 to 3, 2018

October 2 to 3, 2018 · NWS OKX · 4 events in 2 counties and zones

A warm front lifted north across the area through the day on October 2nd, leaving the local area in the warm sector. Multiple rounds of showers and thunderstorms developed and moved through the region.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

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.

What happened

The episode as NWS OKX wrote it up.

A warm front lifted north across the area through the day on October 2nd, leaving the local area in the warm sector. Multiple rounds of showers and thunderstorms developed and moved through the region. With wet antecedent conditions from recent rainfall and plenty of available moisture as precipitable water values approached two inches, these showers and storms resulted in flash flooding across portions of northeast New Jersey. Rainfall totals across the region generally ranged from 1-3 inches, with a CoCoRaHS observer in Oakland reporting 2.30 inches.

What forecasters said that day

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 Oct 2, 7:44 PM EST, 52 minutes earlier.

Area forecast discussion, Oct 2, 7:44 PM EST, 52 minutes before
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Hazardous weather outlook, Oct 2, 4:15 PM EST, 4 hours 21 minutes before
Hazardous Weather Outlook
National Weather Service New York NY
515 PM EDT Tue Oct 2 2018

NJZ002-004-103>106-NYZ067>070-031000-
Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen-
Western Essex-Eastern Essex-Orange-Putnam-Rockland-
Northern Westchester-
515 PM EDT Tue Oct 2 2018

...TORNADO WATCH 394 IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

This Hazardous Weather Outlook is for northeast New Jersey and
southeast New York.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.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.

NJZ107-108-031000-
Western Union-Eastern Union-
515 PM EDT Tue Oct 2 2018

This Hazardous Weather Outlook is for northeast New Jersey.

.DAY ONE...Tonight.

There is a risk for severe thunderstorms late this afternoon and this
evening. The main threat is from damaging wind gusts, but an isolated
tornado cannot be ruled out. Locally heavy rainfall and minor urban
flooding is also possible. There is also a marginal risk for flash
flooding.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time that would meet
National Weather Service warning criteria.

.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.

CTZ005-009-NYZ071-031000-
Northern Fairfield-Southern Fairfield-Southern Westchester-
515 PM EDT Tue Oct 2 2018

...TORNADO WATCH 394 IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

This Hazardous Weather Outlook is for southern Connecticut and
southeast New York.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.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.

CTZ006>008-010>012-NJZ006-NYZ072>075-176-178-031000-
Northern New Haven-Northern Middlesex-Northern New London-
Southern New Haven-Southern Middlesex-Southern New London-Hudson-
New York (Manhattan)-Bronx-Richmond (Staten Island)-Kings (Brooklyn)-
Northern Queens-Southern Queens-
515 PM EDT Tue Oct 2 2018

This Hazardous Weather Outlook is for southern Connecticut,
northeast New Jersey and southeast New York.

.DAY ONE...Tonight.

There is a slight risk for strong and possibly severe thunderstorms
late this afternoon and evening. The main threat is from damaging
wind gusts. Locally heavy rainfall and minor urban flooding is also
possible. There is also a marginal risk for flash flooding.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time that would meet
National Weather Service warning criteria.

.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.

ANZ330-335-338-340-345-350-353-355-NYZ078>081-177-179-031000-
Long Island Sound East of New Haven CT/Port Jefferson NY-
Long Island Sound West of New Haven CT/Port Jefferson NY-
New York Harbor-Peconic and Gardiners Bays-
South Shore Bays from Jones Inlet through Shinnecock Bay-
Moriches Inlet NY to Montauk Point NY out 20 nm-
Fire Island Inlet NY to Moriches Inlet NY out 20 nm-
Sandy Hook NJ to Fire Island Inlet NY out 20 nm-Northwestern Suffolk-
Northeastern Suffolk-Southwestern Suffolk-Southeastern Suffolk-
Northern Nassau-Southern Nassau-
515 PM EDT Tue Oct 2 2018

This Hazardous Weather Outlook is for Atlantic coastal waters and
southeast New York.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time that would meet
National Weather Service warning criteria.

.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.

In the hours before

Local storm report, Oct 2, 7:25 PM EST, 1 hour 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
825 PM EDT TUE OCT 02 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0630 PM     TSTM WND DMG     YORKTOWN                41.30N  73.81W
10/02/2018                   WESTCHESTER        NY   DEPT OF HIGHWAYS

            NY 129 BETWEEN NY 118 AND UNDERHILL AVENUE CLOSED DUE
            TO DOWNED TREE AND WIRES.

&&

CJB
Local storm report, Oct 2, 7:35 PM EST, 1 hour 1 minute before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW YORK NY
835 PM EDT TUE OCT 02 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0428 PM     TSTM WND DMG     YORKTOWN                41.30N  73.81W
10/02/2018                   WESTCHESTER        NY   DEPT OF HIGHWAYS

            NY 129 BETWEEN NY 118 AND UNDERHILL AVENUE CLOSED DUE
            TO DOWNED TREE AND WIRES.

&&

CORRECTED EVENT TIME...FATALITIES...INJURIES

CJB
Local storm report, Oct 2, 7:44 PM EST, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
844 PM EDT TUE OCT 02 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0638 PM     TSTM WND DMG     MOUNT KISCO             41.20N  73.73W
10/02/2018                   WESTCHESTER        NY   BROADCAST MEDIA

            TREES DOWN ON ORCHARD ROAD

&&

CJB
Special weather statement, Oct 2, 7:47 PM EST, 49 minutes before
Special Weather Statement
National Weather Service New York NY
847 PM EDT TUE OCT 2 2018

NYZ081-030100-
Southeast Suffolk-
847 PM EDT TUE OCT 2 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN SUFFOLK
COUNTY...

At 846 PM EDT, radar indicated strong thunderstorms along a line
extending from near Montauk Point to near Hither Hills
State Park. Movement was east at 45 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Montauk Point, Hither Hills State Park and Montauk.

LAT...LON 4104 7187 4094 7219 4103 7212 4102 7211
      4101 7211 4100 7209 4101 7209 4103 7206
      4103 7203 4105 7200 4105 7197 4107 7197
      4108 7196 4109 7191 4108 7189 4108 7186
      4106 7185
TIME...MOT...LOC 0046Z 257DEG 40KT 4111 7195 4098 7205

Goodman
Special weather statement, Oct 2, 8:24 PM EST, 12 minutes before
Special Weather Statement
National Weather Service New York NY
924 PM EDT TUE OCT 2 2018

NJZ002-004-006-103>106-NYZ069>073-176-178-030215-
Hudson-Eastern Essex-Western Bergen-Western Passaic-Western
Essex-Eastern Bergen-Eastern Passaic-Rockland-Northern
Queens-Southern Queens-Bronx-Southern Westchester-New York
(Manhattan)-Northern Westchester-
924 PM EDT TUE OCT 2 2018

...STRONG THUNDERSTORM WILL AFFECT HUDSON...PASSAIC...BERGEN...
NORTHERN ESSEX...SOUTHERN WESTCHESTER...QUEENS...BRONX...ROCKLAND
AND NEW YORK (MANHATTAN) COUNTIES...

At 923 PM EDT, a strong thunderstorm was located over Pompton Lakes,
moving east at 30 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Yonkers, Paterson, New Rochelle, Flushing, Passaic, White Plains,
Wayne, Mott Haven, Hoboken, Bloomfield, East Tremont, Hackensack,
Bergenfield, Paramus and Ridgewood.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4069 7390 4074 7395 4071 7397 4081 7435
      4086 7432 4090 7433 4090 7427 4097 7428
      4100 7430 4102 7443 4105 7445 4104 7450
      4107 7449 4115 7369 4110 7373 4108 7371
      4083 7378 4083 7380 4081 7378 4067 7382
TIME...MOT...LOC 0123Z 267DEG 28KT 4100 7428

Goodman
Local storm report, Oct 2, 8:30 PM EST, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
930 PM EDT TUE OCT 02 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 PM     TSTM WND DMG     MOUNT SINAI             40.94N  73.02W
10/02/2018                   SUFFOLK            NY   PUBLIC

            TREE DOWN ON CAR ON FALMOUTH DRIVE

&&

CJB

The radar

The Philadelphia radar (KDIX), 120 km away, was scanning. The volume nearest the first event began at 01:35 UTC.

Open the radar archive at this moment

Event by event

4 flash flood. Local standard time, as filed.

Flash Flood, Passaic

When
October 2, 8:36 PM EST to 9:06 PM EST
Where
Passaic County, 0.32 mi NE of Bloomingdale to 0.35 mi NE of Bloomingdale
Cause
Heavy Rain
Reported by
Amateur Radio
Coordinates
41.024, -74.296

Ringwood Avenue in Wanaque was closed northbound at Whistler Place due to flooding.

Flash Flood, Bergen

When
October 2, 8:48 PM EST to 9:18 PM EST
Where
Bergen County, 0.9 mi E of Oakland to 1.01 mi E of Oakland
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
41.029, -74.233

A car was floating on Calumet Avenue in Oakland due to flooding. In addition, street flooding was reported on both Seminole Avenue and Pine Crest Drive.

Flash Flood, Bergen

When
October 2, 9:30 PM EST to October 3, 1:15 AM EST
Where
Bergen County, 0.46 mi ESE of Ridgewood
Cause
Heavy Rain
Reported by
River/Stream Gage
Coordinates
40.997, -74.112

The Hohokus Brook rose above its flood stage of 3.0ft at 10:30pm EDT October 2nd, crested at a height of 3.51 ft at 11:00pm EDT, and fell back below flood stage at 2:15am EDT October 3rd.

Flash Flood, Bergen

When
October 2, 9:30 PM EST to 10:00 PM EST
Where
Bergen County, 0.46 mi NE of Park Ridge to 0.53 mi WNW of Woodcliff Lake
Cause
Heavy Rain
Reported by
Trained Spotter
Coordinates
41.034, -74.043

The Fire Department was dispatched to a home on Park Avenue in Park Ridge due to flood waters entering the basement.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in New Jersey in 2018Every state in 2018This day in weather historyWarnings in New Jersey, October 2018

Sources

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 2026-09-30. Each event’s entry at NCEI: 790149, 790155, 790159, 790161.