Alert archive / New Jersey / Flash Flood Warnings in 1990

Flash Flood Warning 7, NWS Philadelphia/Mount Holly

June 18, 1990Burlington County, Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 18, 1990, 8:05 PM EDT for Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 115 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1990, 8:05 PM EDT (00:05 UTC)
Expired
Jun 18, 1990, 10:00 PM EDT
In force
115 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 00:00Z, 0.1 hours before the alert went out and 53 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 1990-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 1990-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 161 square meters per square second.1939Sfc1 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
1 J/kg
Mixed-layer CIN
-299 J/kg
Mixed-layer LCL
1215 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
161 m²/s²
0-3 km storm-relative helicity
170 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 190008
FFWPHL
NJC005-007-015-190200-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA PA
805 PM EDT MON JUN 18 1990
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL 1000 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH NEW JERSEY
 
   ...BURLINGTON COUNTY...CAMDEN COUNTY...GLOUCESTER COUNTY
 
AT 8 PM WEATHER SERVICE RADAR SHOWED HEAVY RAIN MOVING INTO SOUTHERN
NEW JERSEY. WEATHER SPOTTERS HAVE ALREADY REPORTED SOME ROAD FLOODING
IN THE CHERRY HILL...MARLTON...AND MOORESTOWN AREAS OF BURLINGTON
COUNTY.
 
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
Jun 19, 2:57 PM EDTSevere Thunderstorm WarningPHIMercer33 min
Jun 19, 3:09 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem36 min
Jun 19, 3:13 PM EDTSevere Thunderstorm WarningPHIBurlington32 min
Jun 19, 4:43 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland62 min
Jun 19, 5:40 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland5 min

Nearby

Flash Flood Warnings in New Jersey, 1990Every flash flood warning in 1990

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.