Alert archive / New Jersey / Flash Flood Warnings in 1998

Flash Flood Warning 17, NWS Philadelphia/Mount Holly

June 13, 1998Middlesex County, Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 13, 1998, 11:30 AM EDT for 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
Jun 13, 1998, 11:30 AM EDT (15:30 UTC)
Expired
Jun 13, 1998, 1:30 PM EDT
In force
2 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Middlesex County, NJ, Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 48 km from the middle of the area, began a volume at 15:34 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, 3.5 hours before the alert went out and 132 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 1998-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 167 joules per kilogram.LCLLFCEL10008507005003002001001 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 1998-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
167 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
440 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPHL 131531
FFWPHL
NJC023-025-131735-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1130 AM EDT SAT JUN 13 1998

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN MIDDLESEX COUNTY IN NEW JERSEY
  WESTERN MONMOUTH COUNTY IN NEW JERSEY

* UNTIL 130 PM EDT

* AT 1120 AM REPORTS WERE RECEIVED OF ROAD CLOSURES IN METUCHEN
 WITH 1 INCH OF RAIN FALLING WITHIN 10 MINUTES.  MORE THUNDERSTORMS
 ARE UPSTREAM AND WILL PASS OVER THE SAME AREAS OF EASTERN MIDDLESEX
 AND WESTERN MONMOUTH COUNTIES EXACERBATING THE FLOODING CONDITIONS
 AND WILL LIKELY PUSH SOME SMALL STREAMS OVER BANKFULL.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE
ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...
ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

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

EBERWINE/GIGI


&

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 11:16 AM EDTSevere Thunderstorm WarningPHIMonmouth64 min
Jun 13, 12:00 PM EDTFlash Flood WarningPHIHunterdon, Morris, Warren2 hr

Nearby

Flash Flood Warnings in New Jersey, 1998Every flash flood warning in 1998

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.