Alert archive / New Jersey / Flash Flood Warnings in 1997

Flash Flood Warning 8, NWS Philadelphia/Mount Holly

July 24, 1997Mercer County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 24, 1997, 6:35 PM EDT for Mercer 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 counties it named.

The facts

Issued
Jul 24, 1997, 6:35 PM EDT (22:35 UTC)
Expired
Jul 24, 1997, 10:00 PM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Mercer County, NJ

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.6 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, Phillips Aaf/Abe, MD at 12:00Z on 1997-07-24Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 1997-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
549 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
165 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 242236
FFWPHL
NJC021-250200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
635 PM EDT THU JUL 24 1997

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1000 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN  NEW JERSEY

   ...NORTHERN MERCER COUNTY
 
SPOTTER REPORTS INDICATED IN EXCESS OF 5 INCHES OF RAIN FROM THIS
MORNING INTO LATE AFTERNOON. NATIONAL WEATHER SERVICE RADAR SHOWED A
BAND OF HEAVY RAIN CONTINUING OVER THIS AREA.

IF YOU ARE IN AN AREA PRONE TO FLOODING...MOVE TO HIGHER GROUND
IMMEDIATELY...BEFORE YOUR ACCESS IS CUT OFF BY RISING FLOOD WATERS.

DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE WATER MAY BE
DEEPER THAN YOU THINK. RAPIDLY RISING WATERS CAN QUICKLY ENGULF
YOUR VEHICLE AND ITS OCCUPANTS. IF YOUR VEHICLE STALLS...ABANDON IT
AND SEEK HIGHER GROUND QUICKLY.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE vTO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE
TELEVISION OUTLET.
 

&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 5:30 PM EDTFlash Flood WarningPHIHunterdon5 hr

Nearby

Flash Flood Warnings in New Jersey, 1997Every flash flood warning in 1997

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.