Alert archive / New Jersey / Flash Flood Warnings in 2004

Flash Flood Warning 103, NWS Philadelphia/Mount Holly

September 28, 20048 counties in New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 28, 2004, 7:41 PM EDT for 8 counties in New Jersey. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 28, 2004, 7:41 PM EDT (23:41 UTC)
Expired
Sep 29, 2004, 1:45 AM EDT
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 23:45 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.7 hours before the alert went out and 150 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 2004-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 318 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 2004-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
318 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KPHI 282346
FFWPHI
NJC019-021-023-025-027-035-037-041-290545-
/X.NEW.KPHI.FF.W.0022.040928T2341Z-040929T0545Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
741 PM EDT TUE SEP 28 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED 
OR EXTENDED THE 

* FLASH FLOOD WARNING FOR...
  MERCER COUNTY 
  MONMOUTH COUNTY
  MIDDLESEX COUNTY 
  THIS INCLUDES THE CITIES OF...PERTH AMBOY...NEW BRUNSWICK
  MORRIS COUNTY 
  SOMERSET COUNTY 
  HUNTERDON COUNTY 
  SUSSEX COUNTY 
  EASTERN WARREN 

* UNTIL 145 AM EDT

* AT 740 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN CONTINUED TO FALL ACROSS THE WARNING AREA. 
  NUMEROUS STREAMS WERE FLOODING AND THERE ALSO WAS POOR DRAINAGE
  FLOODING. SIGNIFICANT RISES ARE EXPECTED WITH MAIN STEM RIVERS
  ESPECIALLY IN THE RARITAN BASIN. PLEASE BE ALERT FOR POSSIBLE
  RIVER FLOOD WARNINGS LATER THIS EVENING.  
 
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WHITE HOUSE STATION...WEST FREEHOLD...TWIN
  RIVERS...TINTON FALLS...SUSSEX...STANHOPE...
  SOMERVILLE...SAYREVILLE...ROCKY HILL...
  RED BANK...PRINCETON...PEQUANNOCK TOWNSHIP...
  PENNINGTON...PARSIPPANY...OXFORD...
  MORRISTOWN...MILLSTONE...MIDDLESEX...
  MADISON...LONG VALLEY...LINCROFT...LEBANON...
  TELEMARK...LAKE MOHAWK...KINNELON...
  JAMESBURG...HOPEWELL...HOPATCONG...
  GLEN GARDNER...FRANKLIN...FLEMINGTON...
  HANOVER...EAST FREEHOLD...EAST BRUNSWICK...
  COLONIA...CLEARBROOK PARK...CHESTER...
  LAKE...BRANCHVILLE...BOUND BROOK...BOONTON...
  

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 4031 7481 4014 7396 4100 7432 4129 7469
      4076 7509

$$

TFG

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 28, 12:48 PM EDTFlash Flood WarningPHISussex, Warren3 hr
Sep 28, 4:11 PM EDTTornado WarningPHISalem34 min
Sep 28, 4:44 PM EDTFlash Flood WarningPHIHunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more4 hr
Sep 28, 7:37 PM EDTSevere Thunderstorm WarningPHIMonmouth53 min

Nearby

Flash Flood Warnings in New Jersey, 2004Every flash flood warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.