Alert archive / New Jersey / Flash Flood Warnings in 1996

Flash Flood Warning 57, NWS Philadelphia/Mount Holly

July 31, 1996Mercer County, Middlesex County, Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 31, 1996, 10:34 AM EDT for Mercer County, Middlesex County, Monmouth County, New Jersey. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 31, 1996, 10:34 AM EDT (14:34 UTC)
Expired
Jul 31, 1996, 12:35 PM EDT
In force
2 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 43 km from the middle of the area, began a volume at 14:38 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 12:00Z, 2.6 hours before the alert went out and 144 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 1996-07-31Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 1996-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
96 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 
TTAA00 KPHL 311435
FFWPHL
NJC021-023-025-035-311635-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
1034 AM EDT WED JUL 31 1996

THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY NJ HAS
ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1235 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN  NEW JERSEY

   ...SOMERSET COUNTY
   ...MIDDLESEX COUNTY
   ...NORTHERN MONMOUTH COUNTY
   ...NORTHERN MERCER COUNTY
 
.

OBSERVERS IN MERCER COUNTY AND NORTHERN MONMOUTH COUNTIES HAVE
INDICATED RAINFALL OF 2 INCHES WITHIN AN HOUR CAUSING FLOODING ON
MANY ROADWAYS WITHIN THE WARNED AREA.

VERY HEAVY RAINS FROM THUNDERSTORMS CAN CAUSE FLOODING OF POOR
DRAINAGE AREAS AND LOW LYING SPOTS IN A HURRY. BE ALERT FOR RAPIDLY
CHANGING CONDITIONS. DO NOT DRIVE THROUGH FLOODED AREAS. THE WATER
MAY BE DEEPER THAN YOU THINK.

STAY TUNED TO NOAA WEATHER RADIO...THE VOICE OF THE NATIONAL WEATHER
SERVICE...OR TO COMMERCIAL RADIO OR TELEVISION STATIONS FOR THE
LATEST STORM INFORMATION.

RNS

 

&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 10:34 AM EDTFlash Flood WarningPHISomerset2 hr
Jul 31, 11:44 AM EDTFlash Flood WarningPHIBurlington2 hr
Jul 31, 11:52 AM EDTFlash Flood WarningPHIMercer6 hr

Nearby

Flash Flood Warnings in New Jersey, 1996Every flash flood warning in 1996

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.