Alert archive / New Jersey / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 51, NWS Philadelphia/Mount Holly

August 29, 1990Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 29, 1990, 7:50 PM EDT for Salem County, New Jersey. It was in force for 70 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 29, 1990, 7:50 PM EDT (23:50 UTC)
Expired
Aug 29, 1990, 9:00 PM EDT
In force
70 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Salem County, NJ

The radar

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

What was reported inside it

TimeReportWhereRemark
Aug 29, 8:00 PM EDTThunderstorm Wind 61Salem, NJ

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 11.8 hours before the alert went out and 75 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 1990-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 178 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 1990-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
178 J/kg
Mixed-layer CIN
-350 J/kg
Mixed-layer LCL
1490 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
96 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 300019 RRA
SVRPHL
NJC033-300100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA PA
750 PM EDT WED AUG 29 1990
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH NEW JERSEY
 
   ...SALEM COUNTY
 
WEATHER SERVICE RADAR AT 748 PM INDICATED A SEVERE THUNDERSTORM NEAR
WILMINGTON DELAWARE WHICH WAS MOVING EAST AT 20 MILES AN HOUR. THIS
STORM PRODUCED WIND GUSTS TO 60 MPH AT THE WILMINGTON AIRPORT AT 743
PM. THIS STORM WILL MOVE INTO WESTERN SALEM COUNTY BY 800 THIS
EVENING...AND CONTINUE EAST THROUGH THE REMAINDER OF THE COUNTY BY 900
PM.
 
 
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.
 
REMEMBER...SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING.
 
WERT

Nearby

Severe Thunderstorm Warnings in New Jersey, 1990Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.