Alert archive / New Jersey / Flash Flood Warnings in 2007

Flash Flood Warning 13, NWS New York, NY

April 27, 20074 counties in New Jersey

NWS New York, NY issued this flash flood warning at Apr 27, 2007, 3:10 AM EDT for 4 counties in New Jersey. It took effect at Apr 27, 2007, 3:15 AM EDT. It was in force for 3 hr. 4 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 27, 2007, 3:10 AM EDT (07:10 UTC)
In effect from
Apr 27, 2007, 3:15 AM EDT
Expired
Apr 27, 2007, 6:15 AM EDT
In force
3 hr
Issued by
NWS New York, NY
Area
Whole counties

Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ

The radar

The Philadelphia radar (KDIX), 105 km from the middle of the area, began a volume at 07:11 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
Apr 27, 4:15 AM EDTFLOODLodi, NJRTE 46 IN LODI CLOSED IN BOTH DIRECTIONS DUE TO FLOODING.
Apr 27, 5:00 AM EDTFLASH FLOODNewark, NJI-280 FLOODED.
Apr 27, 6:00 AM EDTFLASH FLOODKearny, NJHWY 508 CLOSED DUE TO FLOODING
Apr 27, 6:00 AM EDTFLASH FLOODWayne, NJTWO LANES CLOSED ON RTE. 46

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 00:00Z, 7.2 hours before the alert went out and 110 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 00:00Z on 2007-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2007-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1074 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
179 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.

000 
WGUS51 KOKX 270715
FFWOKX
NJC003-013-017-031-039-271015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE UPTON NY
310 AM EDT FRI APR 27 2007

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

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

* UNTIL 615 AM EDT

* AT 305 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A LARGE AREA OF MODERATE TO HEAVY RAINFALL MOVING ACROSS        
  NORTHEAST NEW JERSEY. ADDITIONAL HEAVY RAINFALL OVER CENTRAL NEW   
  JERSEY WILL BE MOVING INTO THE WARNED AREA DURING THE PRE-DAWN    
  HOURS...AND FLASH FLOODING OF LOW LYING AREAS AND ALONG SMALL      
  STREAMS WILL BE LIKELY.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA THROUGH 6 AM.

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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 4074 7436 4086 7431 4090 7433 4089 7426
      4098 7428 4112 7421 4112 7420 4100 7390
      4089 7392 4066 7407 4065 7414 4071 7411
      4060 7421 4059 7446 4059 7446 4064 7439
      4066 7446

$$

CNJ

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 2:50 AM EDTFlood WatchOKXHudson, Passaic13 hr
Apr 27, 3:10 AM EDTFlash Flood WarningOKXBergen, Essex, Hudson, Passaic, Union3 hr
Apr 27, 9:05 AM EDTFlash Flood WarningOKXEssex, Hudson, Passaic, Union115 min
Apr 27, 9:05 AM EDTFlash Flood WarningOKXBergen, Essex, Hudson, Passaic, Union115 min
Apr 27, 10:55 AM EDTFlash Flood WarningOKXBergen, Essex, Hudson, Passaic3 hr

Nearby

Flash Flood Warnings in New Jersey, 2007Every flash flood warning in 2007

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.