Alert archive / New Jersey / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 36, NWS Philadelphia/Mount Holly

September 27, 1993Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 27, 1993, 3:48 PM EDT for Gloucester County, New Jersey. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Sep 27, 1993, 3:48 PM EDT (19:48 UTC)
Expired
Sep 27, 1993, 4:30 PM EDT
In force
42 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, 7.8 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 12:00Z on 1993-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1090 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 1993-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.1939587897Sfc1 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
1090 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
834 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KPHL 271951 RRA
SVRPHL
NJC015-272030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA PA
348 PM EDT MON SEP 27 1993
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH NEW JERSEY
 
   ...GLOUCESTER COUNTY
 
WEATHER SERVICE RADAR INDICATES A LINE OF THUNDERSTORMS MOVING EAST
THROUGH GLOUCESTER COUNTY NEW JERSEY. THESE THUNDERSTORMS MAY BE
ACCOMPANIED BY STRONG WIND GUSTS OF OVER 60 MPH.
 
     THE LINE OF THUNDERSTORMS WAS MOVING EAST AROUND 25 MPH.
 
 
 
THESE ARE DANGEROUS STORMS.  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.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 27, 4:22 PM EDTSevere Thunderstorm WarningPHIMercer53 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1993Every severe thunderstorm warning in 1993

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.