Alert archive / New Jersey / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 37, NWS Philadelphia/Mount Holly

August 29, 1989Atlantic County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 29, 1989, 6:09 PM EDT for Atlantic County, Ocean County, New Jersey. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Aug 29, 1989, 6:09 PM EDT (22:09 UTC)
Expired
Aug 29, 1989, 8:15 PM EDT
In force
2 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Atlantic County, NJ, Ocean 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, 10.2 hours before the alert went out and 25 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 1989-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 377 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 1989-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
377 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
636 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KACY 292209
SVRACY
NJC001-009-029-300015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
609 PM EDT TUE AUG 29 1989
 
THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL  815 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH NEW JERSEY
          ...ATLANTIC...CAPE MAY...OCEAN
 
AND ADJACENT COASTAL WATERS.
 
 
POSSIBLE SEVERE THUNDERSTORMS ARE INDICATED BY RADAR MOVING THROUGH
SOUTHERN NEW JERSEY. THESE THUNDERSTORMS POSE A THREAT FOR SOUTHERN
OCEAN...ATLANTIC AND CAPE MAY COUNTIES AND THE COASTAL WATERS FOR THE
NEXT HOUR OR SO.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
VAUGHAN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 6:09 PM EDTSevere Thunderstorm WarningPHICape May2 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 1989Every severe thunderstorm warning in 1989

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.