Alert archive / New Jersey / Flash Flood Warnings in 1994

Flash Flood Warning 15, NWS Philadelphia/Mount Holly

August 27, 1994Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 27, 1994, 11:46 PM EDT for Gloucester County, New Jersey. It was in force for 74 min.

The area

The counties it named.

The facts

Issued
Aug 27, 1994, 11:46 PM EDT (03:46 UTC)
Expired
Aug 28, 1994, 1:00 AM EDT
In force
74 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Gloucester County, NJ

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 00:00Z, 3.8 hours before the alert went out and 63 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, Atlantic City In, NJ at 00:00Z on 1994-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2096 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, Atlantic City In, NJ at 00:00Z on 1994-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
2096 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1156 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
23 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 280346
FFWPHL
NJC015-280545-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
1146 PM EDT SAT AUG 27 1994
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  145 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH NEW JERSEY
 
   ...EASTERN GLOUCESTER COUNTY
 
AT 1145 PM...NATIONAL WEATHER SERVICE RADAR SHOWED STRONG THUNDERSTORMS
FORMING OVER CENTRAL GLOUCESTER COUNTY JUST SOUTH OF THE TOWN OF
BLACKWOOD. THE THUNDERSTORMS CONTINUE TO MOVE AND REFORM SLOWLY
SOUTHWARD. THUNDERSTORMS COULD DROP OVER 1 1/2 INCHES OF RAIN IN LESS
THAN AN HOUR.
 
IF YOU ARE IN THE WARNED COUNTY IN @AN AREA SUBJECT TO FLOODING
MOVE TO HIGHER GROUND.  DO NOT DRIVE THROUGH FLOOD WATERS.
CLIMBING ATOP YOUR STALLED VEHICLE WILL NOT PREVENT YOU FROM
BEING SWEPT INTO DANGEROUS STREAM CONDITIONS AS WATER LEVELS RISE.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 10:49 PM EDTSevere Thunderstorm WarningPHIBurlington56 min
Aug 27, 11:25 PM EDTSevere Thunderstorm WarningPHIAtlantic65 min
Aug 27, 11:48 PM EDTSevere Thunderstorm WarningPHIOcean42 min
Aug 28, 12:50 AM EDTSevere Thunderstorm WarningPHIOcean25 min

Nearby

Flash Flood Warnings in New Jersey, 1994Every flash flood warning in 1994

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.