Alert archive / New Jersey / Flash Flood Warnings in 2012

Flash Flood Warning 9, NWS New York, NY

July 18, 20124 counties in New Jersey

NWS New York, NY issued this flash flood warning at Jul 18, 2012, 4:37 PM EDT for 4 counties in New Jersey. It was in force for 113 min. 1 report 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 18, 2012, 4:37 PM EDT (20:37 UTC)
Expired
Jul 18, 2012, 6:30 PM EDT
In force
113 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Flood severity
None

Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Union County, NJ

The radar

The Philadelphia radar (KDIX), 91 km from the middle of the area, began a volume at 20:39 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
Jul 18, 5:10 PM EDTFLASH FLOODNewark, NJFLOODING AT HASLEY ST AND W KINNEY ST

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, 8.6 hours before the alert went out and 117 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 2012-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2129 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 2012-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.193958Sfc1 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
2129 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
1491 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
95 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.

028 
WGUS51 KOKX 182037
FFWOKX
NJC003-013-017-039-182230-
/O.NEW.KOKX.FF.W.0009.120718T2037Z-120718T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
437 PM EDT WED JUL 18 2012

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  UNION COUNTY IN NORTHEAST NEW JERSEY...
  SOUTHERN BERGEN COUNTY IN NORTHEAST NEW JERSEY...
  ESSEX COUNTY IN NORTHEAST NEW JERSEY...
  HUDSON COUNTY IN NORTHEAST NEW JERSEY...

* UNTIL 630 PM EDT...

* AT 435 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM THUNDERSTORMS TRAINING OVER THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 4075 7437 4080 7437 4086 7433 4088 7434
      4088 7425 4082 7413 4086 7411 4088 7412
      4089 7395 4071 7402 4068 7406 4066 7407
      4065 7418 4063 7420 4063 7442 4066 7441
      4066 7446 4067 7447

$$

MPS
2 follow-up statements
983 
WGUS71 KOKX 182150
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
550 PM EDT WED JUL 18 2012

NJC003-013-017-039-182230-
/O.CON.KOKX.FF.W.0009.000000T0000Z-120718T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUDSON NJ-ESSEX NJ-BERGEN NJ-UNION NJ-
550 PM EDT WED JUL 18 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR
UNION...SOUTH CENTRAL BERGEN...ESSEX AND HUDSON COUNTIES...

AT 544 PM EDT...LAW ENFORCEMENT AND THE PUBLIC REPORTED NUMEROUS 
ROAD CLOSURES DUE TO FLASH FLOODING OVER THE WARNED AREA. THE 
HEAVIEST RAIN HAS MOVED EAST OF THE AREA...BUT ADDITIONAL LIGHT TO 
MODERATE RAIN WILL KEEP THE FLOODING FROM SUBSIDING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 4075 7437 4080 7437 4086 7433 4088 7434
      4088 7425 4082 7413 4086 7411 4088 7412
      4089 7395 4071 7402 4068 7406 4066 7407
      4065 7418 4063 7420 4063 7442 4066 7441
      4066 7446 4067 7447

$$

MPS
092 
WGUS71 KOKX 182222
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
622 PM EDT WED JUL 18 2012

NJC003-013-017-039-182232-
/O.EXP.KOKX.FF.W.0009.000000T0000Z-120718T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUDSON NJ-ESSEX NJ-BERGEN NJ-UNION NJ-
622 PM EDT WED JUL 18 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM EDT FOR UNION...
SOUTH CENTRAL BERGEN...ESSEX AND HUDSON COUNTIES...

THE HEAVIEST RAIN HAS MOVED EAST OF THE WARNED AREA. ADDITIONAL 
LIGHT TO MODERATE RAIN WILL CREATE CONDITIONS THAT WILL MAKE IT SLOW 
FOR WATER ON FLOODED ROADS TO SUBSIDE THROUGH THIS EVENING.

LAT...LON 4075 7437 4080 7437 4086 7433 4088 7434
      4088 7425 4082 7413 4086 7411 4088 7412
      4089 7395 4071 7402 4068 7406 4066 7407
      4065 7418 4063 7420 4063 7442 4066 7441
      4066 7446 4067 7447

$$

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 1:12 PM EDTSevere Thunderstorm WarningOKXPassaic63 min
Jul 18, 1:15 PM EDTAreal Flood AdvisoryOKXPassaic90 min
Jul 18, 2:00 PM EDTAreal Flood AdvisoryOKXBergen2 hr
Jul 18, 2:26 PM EDTSevere Thunderstorm WarningOKXBergen, Passaic64 min
Jul 18, 2:36 PM EDTAreal Flood AdvisoryOKXPassaic84 min
Jul 18, 3:54 PM EDTSpecial Weather StatementOKXBergen, Hudson66 min
Jul 18, 4:13 PM EDTAreal Flood AdvisoryOKXBergen, Essex, Hudson, Union2 hr
Jul 18, 4:41 PM EDTSevere Thunderstorm WarningOKXBergen, Essex, Hudson, Passaic, Union49 min

Nearby

Flash Flood Warnings in New Jersey, 2012Every flash flood warning in 2012

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.