Alert archive / New Jersey / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 34, NWS Philadelphia/Mount Holly

June 19, 1994Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 19, 1994, 4:38 PM EDT for Gloucester County, New Jersey. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Jun 19, 1994, 4:38 PM EDT (20:38 UTC)
Expired
Jun 19, 1994, 5:45 PM EDT
In force
67 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 12:00Z, 8.6 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 12:00Z on 1994-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 716 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 12:00Z on 1994-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 115 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
716 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
1057 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
115 m²/s²
0-3 km storm-relative helicity
197 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 
WUUS1 KPHL 192042 RRA
SVRPHL
NJC015-192145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
438 PM EDT SUN JUN 19 1994
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH NEW JERSEY
 
   ...SOUTHERN GLOUCESTER COUNTY
 
AT 440 PM...NATIONAL WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM
OVER CENTRAL GLOUCESTER COUNTY MOVING SOUTHEAST AT 25 MPH.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN THE WARNED AREA...PREPARE
FOR STRONG DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN AND DEADLY
LIGHTNING.  SHOULD THE STORM APPROACH YOU...SEEK IMMEDIATE SHELTER
INDOORS...BUT DO NOT STAND NEAR WINDOWS.  MOBILE HOMES ARE MOST
VULNERABLE TO HIGH WINDS AND SHOULD BE AVOIDED.
 
HEAVY RAINS WITH THIS THUNDERSTORM MAY CAUSE FLOODING OF SMALL
STREAMS AND UNDERPASSES VERY QUICKLY.  DO NOT DRIVE YOUR CAR INTO
AREAS WHERE THE WATER COVERS THE ROADWAY.  THE WATER MAY BE DEEPER
THAN YOU THINK.  IF CAUGHT IN RISING WATERS...ABANDON YOUR CAR
QUICKLY.  MOVE TO HIGHER GROUND.
 
SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 58 MILES PER HOUR...
LARGE HAIL...AND DEADLY LIGHTNING.  IF THREATENING WEATHER SUDDENLY
APPROACHES YOU...BOATERS SHOULD BE PREPARED TO MOVE TO SAFE HARBOR.
IF CAUGHT OUT ON THE OPEN WATER...STAY BELOW DECK...IF POSSIBLE...AND
AWAY FROM UNGROUNDED METAL OBJECTS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 4:23 PM EDTSevere Thunderstorm WarningPHIBurlington67 min
Jun 19, 5:02 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland58 min
Jun 19, 5:57 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland63 min
Jun 19, 6:09 PM EDTSevere Thunderstorm WarningPHICape May66 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1994Every severe thunderstorm 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.