Alert archive / New York / Flash Flood Warnings in 2015

Flash Flood Warning 2, NWS New York, NY

May 31, 2015Bronx County, Rockland County, Westchester County, New York; Bergen County, Passaic County, New Jersey; Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this flash flood warning at May 31, 2015, 3:23 PM EDT for Bronx County, Rockland County, Westchester County, New York; Bergen County, Passaic County, New Jersey; Greater Bridgeport Planning Region, Connecticut. It was in force for 3 hr. 8 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
May 31, 2015, 3:23 PM EDT (19:23 UTC)
Expired
May 31, 2015, 6:15 PM EDT
In force
3 hr
Issued by
NWS New York, NY
Area
Storm-based polygon
Flood severity
None

Counties Greater Bridgeport Planning Region, CT, Bergen County, NJ, Passaic County, NJ, Bronx County, NY, Rockland County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 98 km from the middle of the area, began a volume at 19:23 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
May 31, 3:28 PM EDTFLASH FLOODNorwood, NJROAD CLOSED DUE TO FLOODING AT LIVINGSTON STREET
May 31, 3:52 PM EDTFLOODDumont, NJROAD CLOSED DUE TO FLOODING AT WASHINGTON AVENUE AND GRANT
May 31, 3:52 PM EDTFLASH FLOODDumont, NJROAD CLOSED DUE TO FLOODING AT WASHINGTON AVENUE AND GRANT
May 31, 4:03 PM EDTFLASH FLOODParamus, NJPOLICE REPORTING ROADS CLOSED DUE TO FLOODING. FOREST AVENUE SOUTHBOUND BETWEEN MCKINLEY AND CONCORN
May 31, 4:03 PM EDTFLASH FLOODParamus, NJROADS CLOSED DUE TO FLOODING...ROUTE 17 SOUTH - SOUTH OF MIDLAND AVENUE. ALL LANES SOUTHBOUND CLOSED.
May 31, 4:14 PM EDTFLASH FLOODEmerson, NJROAD CLOSED DUE TO FLOODING AT LINCOLN BLVD AT AREA OF RAILROAD TRACKS WITH CAR STUCK IN FLOOD WATERS
May 31, 4:53 PM EDTFLASH FLOODPassaic, NJCAR STUCK IN FLOOD WATERS NEAR RAILROAD TRACKS AT BROAD ST. AND VAN HUTON
May 31, 4:55 PM EDTFLASH FLOODTeaneck, NJCAR STUCK IN 3 FOOT FLOOD WATERS AT NEWBRIDGE RD. AND OLD NEWBRIDGE RD.

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, 7.4 hours before the alert went out and 98 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 2015-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 106 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2015-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939Sfc1 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
106 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
746 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

874 
WGUS51 KOKX 311923
FFWOKX
CTC001-NJC003-031-NYC005-087-119-312215-
/O.NEW.KOKX.FF.W.0002.150531T1923Z-150531T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
323 PM EDT SUN MAY 31 2015

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT...
  EASTERN PASSAIC COUNTY IN NORTHEASTERN NEW JERSEY...
  BERGEN COUNTY IN NORTHEASTERN NEW JERSEY...
  BRONX COUNTY IN SOUTHEASTERN NEW YORK...
  ROCKLAND COUNTY IN SOUTHEASTERN NEW YORK...
  NORTHERN WESTCHESTER COUNTY IN SOUTHEASTERN NEW YORK...

* UNTIL 615 PM EDT
    
* AT 320 PM EDT...DOPPLER RADAR INDICATED A COMPLEX OF THUNDERSTORMS 
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS 
  EXPECTED TO BEGIN SHORTLY.

* RAINFALL RATES OF UP TO 2 INCHES PER HOUR ARE BEING 
  DETECTED...WITH UP TO 2 TO 3 INCHES OF RAINFALL POSSIBLE IN THIS 
  AREA THROUGH 6 PM.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  YONKERS...PATERSON...STAMFORD...NEW ROCHELLE...PASSAIC...WHITE
  PLAINS...WAYNE...HACKENSACK...BERGENFIELD...PARAMUS...OSSINING...
  RIDGEWOOD...PEEKSKILL...RUTHERFORD...SECAUCUS...RAMSEY...
  HAVERSTRAW...TARRYTOWN...RIDGEFIELD AND MOUNT KISCO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4090 7427 4094 7428 4096 7428 4131 7399
      4115 7354 4091 7388 4092 7391 4088 7392
      4088 7394 4086 7395 4081 7404 4080 7406

$$

NV
2 follow-up statements
698 
WGUS71 KOKX 312108
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
508 PM EDT SUN MAY 31 2015

CTC001-NJC003-031-NYC005-087-119-312215-
/O.CON.KOKX.FF.W.0002.000000T0000Z-150531T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAIRFIELD CT-PASSAIC NJ-BERGEN NJ-BRONX NY-ROCKLAND NY-
WESTCHESTER NY-
508 PM EDT SUN MAY 31 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR
SOUTHERN FAIRFIELD...EASTERN PASSAIC...BERGEN...BRONX...ROCKLAND AND
NORTHERN WESTCHESTER COUNTIES...

AT 500 PM EDT...DOPPLER RADAR INDICATED THE LINE OF THUNDERSTORMS 
PRODUCING HEAVY RAIN ACROSS THE WARNED AREA IS MOVING EAST. 

2 TO 4 INCHES OF RAIN HAVE BEEN DETECTED AND MEASURED ACROSS 
SOUTHEASTERN ROCKLAND COUNTY AND NORTHEASTERN BERGEN COUNTY. ROUTE 
17 HAS BEEN REPORTED CLOSED IN PARAMAUS NEW JERSEY BY A TRAINED 
SPOTTER.

THE WARNING WILL BE ALLOWED TO CONTINUE TILL 615 PM DUE TO ONGOING 
FLOODING AND ADDITIONAL ISOLATED STORMS MOVING THROUGH THE AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4090 7427 4094 7428 4096 7428 4131 7399
      4115 7354 4091 7388 4092 7391 4088 7392
      4088 7394 4086 7395 4081 7404 4080 7406

$$

NV
363 
WGUS71 KOKX 312209
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
609 PM EDT SUN MAY 31 2015

CTC001-NJC003-031-NYC005-087-119-312215-
/O.EXP.KOKX.FF.W.0002.000000T0000Z-150531T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAIRFIELD CT-PASSAIC NJ-BERGEN NJ-BRONX NY-ROCKLAND NY-
WESTCHESTER NY-
609 PM EDT SUN MAY 31 2015

...THE FLASH FLOOD WARNING FOR SOUTHERN FAIRFIELD...EASTERN
PASSAIC...BERGEN...BRONX...ROCKLAND AND NORTHERN WESTCHESTER COUNTIES
WILL EXPIRE AT 615 PM EDT...

THE HEAVIEST RAIN AXIS HAS MOVED EAST OF THE REGION...AND ADDITIONAL 
FLASH FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. SEVERAL ROADS 
WILL LIKELY STILL BE FLOODED ACROSS NORTHERN BERGEN AND SOUTHEASTERN 
ROCKLAND COUNTIES. IN ADDITION A FEW CREEKS AND STREAMS WERE 
REPORTED OR DETECTED TO HAVE GONE OVER THEIR BANKS...BUT ARE NOW 
RECEDING. PLEASE CONTINUE TO HEED ALL ROAD CLOSURES.

LAT...LON 4090 7427 4094 7428 4096 7428 4131 7399
      4115 7354 4091 7388 4092 7391 4088 7392
      4088 7394 4086 7395 4081 7404 4080 7406

$$

NV

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 1:01 PM EDTFlash Flood WatchOKXBronx, Kings, Nassau, New York, Orange, Putnam and 5 more43 hr
May 31, 2:01 PM EDTSpecial Weather StatementOKXOrange44 min
May 31, 2:18 PM EDTAreal Flood AdvisoryOKXOrange, Putnam3 hr
May 31, 2:48 PM EDTSpecial Weather StatementOKXOrange42 min
May 31, 3:10 PM EDTAreal Flood AdvisoryOKXBronx, Putnam, Rockland, Westchester3 hr
May 31, 3:11 PM EDTSpecial Weather StatementOKXRockland34 min
May 31, 3:28 PM EDTSpecial Weather StatementOKXNew York47 min
May 31, 3:44 PM EDTSmall Craft AdvisoryOKX48 hr
May 31, 3:57 PM EDTSpecial Weather StatementOKXWestchester63 min
May 31, 4:10 PM EDTSevere Thunderstorm WarningOKXWestchester22 min
May 31, 4:20 PM EDTSpecial Weather StatementOKXBronx, New York40 min
May 31, 4:28 PM EDTAreal Flood AdvisoryOKXPutnam, Westchester3 hr
May 31, 4:44 PM EDTAreal Flood AdvisoryOKXBronx, Kings, New York, Queens3 hr
May 31, 5:02 PM EDTSpecial Weather StatementOKXNew York43 min
May 31, 5:04 PM EDTSpecial Weather StatementOKXBronx, New York41 min
May 31, 5:08 PM EDTSevere Thunderstorm WarningOKXRichmond32 min
May 31, 5:27 PM EDTFlash Flood WarningOKXBronx, Kings, New York, Queens, Richmond3 hr
May 31, 5:37 PM EDTSpecial Weather StatementOKXBronx, Kings, New York, Queens38 min
May 31, 5:39 PM EDTSpecial Weather StatementOKXRichmond36 min
May 31, 6:19 PM EDTSpecial Weather StatementOKXBronx, Kings, Queens41 min
May 31, 6:30 PM EDTAreal Flood AdvisoryOKXKings, Nassau, Queens3 hr
May 31, 6:44 PM EDTSpecial Weather StatementOKXRichmond46 min
May 31, 7:12 PM EDTSpecial Weather StatementOKXKings, Nassau, Queens48 min
May 31, 3:07 PM EDTSpecial Weather StatementOKXBergen23 min
May 31, 3:30 PM EDTAreal Flood AdvisoryOKXEssex, Hudson, Union3 hr
May 31, 4:04 PM EDTSpecial Weather StatementOKXUnion26 min
May 31, 4:13 PM EDTFlash Flood WarningOKXEssex, Hudson, Union6 hr
May 31, 7:51 PM EDTSpecial Weather StatementOKXEssex, Union39 min
May 31, 4:35 PM EDTSpecial Weather StatementOKX40 min
May 31, 4:36 PM EDTSpecial Weather StatementOKX39 min
May 31, 5:25 PM EDTSpecial Weather StatementOKX50 min
May 31, 5:27 PM EDTSpecial Weather StatementOKX33 min
May 31, 5:52 PM EDTSpecial Weather StatementOKX38 min
May 31, 5:58 PM EDTAreal Flood AdvisoryOKXLower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region3 hr

Nearby

Flash Flood Warnings in New York, 2015Flash Flood Warnings in New Jersey, 2015Flash Flood Warnings in Connecticut, 2015Every flash flood warning in 2015

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.