Alert archive / New Jersey / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 40, NWS Philadelphia/Mount Holly

July 31, 1992Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 31, 1992, 9:42 AM EDT for Burlington County, New Jersey. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1992, 9:42 AM EDT (13:42 UTC)
Expired
Jul 31, 1992, 10:45 AM EDT
In force
63 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Burlington County, NJ

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 1.7 hours before the alert went out and 50 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 1992-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 798 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 1992-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
798 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPHL 311345 COR
SVRPHL
NJC005-311445-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE PHILADELPHIA PA
942 AM EDT FRI JUL 31 1992

THE NATIONAL WEATHER SERVICE IN PHILADELPHIA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTH NEW JERSEY

   ...WESTERN BURLINGTON COUNTY

AT 935 AM THIS MORNING A SEVERE THUNDERSTORM WAS REPORTED BY A SPOTTER
AT MOUNT HOLLY NEW JERSEY IN BURLINGTON COUNTY. A WIND GUST TO 68
MPH WAS REPORTED ALONG WITH SMALL HAIL. LOCAL STREET FLOODING AND
POOR DRAINAGE AREA FLOODING IS ALSO A THREAT.

THIS STROM WAS MOVING TOWARD THE NORTHEAST AT AROUND 30 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.  MOBILEp HOMES ARE MOST
VULNERABLE TO HIGH WINDS AND SHOULD BE AVOIDED.

NC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 9:59 AM EDTFlash Flood WarningPHICamden61 min
Jul 31, 9:59 AM EDTSevere Thunderstorm WarningPHICamden61 min
Jul 31, 10:05 AM EDTFlash Flood WarningPHIBurlington55 min
Jul 31, 10:05 AM EDTSevere Thunderstorm WarningPHIBurlington55 min
Jul 31, 7:09 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland66 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1992Every severe thunderstorm warning in 1992

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.