Alert archive / New Jersey / Flash Flood Warnings in 2005

Flash Flood Warning 34, NWS Philadelphia/Mount Holly

October 12, 2005Middlesex County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Oct 12, 2005, 6:35 AM EDT for Middlesex County, New Jersey. It was in force for 3 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
Oct 12, 2005, 6:35 AM EDT (10:35 UTC)
Expired
Oct 12, 2005, 10:00 AM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

County Middlesex County, NJ

The radar

The Philadelphia radar (KDIX), 50 km from the middle of the area, began a volume at 10:38 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 00:00Z, 10.6 hours before the alert went out and 141 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 2005-10-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2005-10-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
7 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
438 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
52 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 KPHI 121035
FFWPHI
NJC023-121400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
635 AM EDT WED OCT 12 2005

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY

* UNTIL 1000 AM EDT

* AT 630 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THAT ONE TO TWO INCHES OF RAIN HAS ALREADY FALLEN IN MUCH OF 
MIDDLESEX COUNTY.  THE HEAVIEST RAINFALL AMOUNTS HAVE BEEN IN THE 
SOUTHWESTERN PART OF THE COUNTY.  AN ADDITIONAL INCH OR TWO OF RAIN 
IS EXPECTED COUNTYWIDE THIS MORNING.

THE HEAVY RAIN FALLING ON THE ALREADY SATURATED GROUND WILL LIKELY 
RESULT IN FLOODING OF SMALL CREEKS AND STREAMS, AS WELL AS HIGHWAYS 
AND UNDERPASSES MAKING FOR A MESSY MORNING COMMUTE.  DO NOT DRIVE 
THROUGH FLOOD WATERS, THE WATER MAY BE DEEPER THAN YOU THINK IT IS.

LAT...LON 4026 7447 4040 7426 4057 7423 4056 7446
      4034 7458

$$

IOVINO

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 12, 2:15 AM EDTFlash Flood WarningPHIWarren6 hr
Oct 12, 2:45 AM EDTFlash Flood WarningPHIHunterdon, Mercer5 hr
Oct 12, 5:40 AM EDTFlash Flood WarningPHISomerset4 hr

Nearby

Flash Flood Warnings in New Jersey, 2005Every flash flood warning in 2005

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.