Alert archive / New Jersey / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 31, NWS Philadelphia/Mount Holly

August 5, 1987Atlantic County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 5, 1987, 3:09 PM EDT for Atlantic County, New Jersey. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Aug 5, 1987, 3:09 PM EDT (19:09 UTC)
Expired
Aug 5, 1987, 4:10 PM EDT
In force
61 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Atlantic 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 12:00Z, 7.2 hours before the alert went out and 12 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 1987-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 345 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 1987-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 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
345 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
1140 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
-15 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 KACY 051912 RRA
SVRACY
NJC001-052010-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
309 PM EDT WED AUG 5 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A TEST SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 410 PM EDT FOR THE FOLLOWING COUNTY OF

SOUTHERN NEW JERSEY... ATLANTIC

...AND ADJACENT COASTAL WATERS.

AT 305 THIS AFTERNOON...RADAR INDCATED A SEVERE THUNDERSTORM IN
THE IMMEDIATE VICINITY OF RICHLAND.  THIS THUNDERSTORM WAS MOVING
EAST AT AROUND 10 MPH.

THIS IS A DANGEROUS STORM AND PEOPLE IN THE WARNED AREA SHOULD
PREPARE FOR STRONG DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN
AND LIGHTNING.  SHOULD THE STORM APPROACH YOU...SEEK IMMEDIATE
SHELTER.  MOBILE TRAILERS ARE MOST VULNERABLE TO HIGH WINDS AND
SHOULD BE AVOIDED.

JK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 2:34 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester41 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1987Every severe thunderstorm warning in 1987

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.