Alert archive / New Jersey / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 29, NWS Philadelphia/Mount Holly

July 31, 1987Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 31, 1987, 3:15 AM EDT for Burlington County, Ocean County, New Jersey. It was in force for 65 min. 2 reports 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: Jul 31, 1987, 3:15 AM EDT (07:15 UTC)
Expired: Jul 31, 1987, 4:20 AM EDT
In force: 65 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

Counties Burlington 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.

What was reported inside it

Time	Report	Where	Remark
Jul 31, 3:49 AM EDT	Thunderstorm Wind 0	Burlington, NJ
Jul 31, 4:00 AM EDT	Thunderstorm Wind 0	Ocean, 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 00:00Z, 7.3 hours before the alert went out and 47 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1758 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KACY 310717
SVRACY
NJC005-029-310820-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
315 AM EDT FRI JUL 31 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 420 AM EDT FOR THE FOLLOWING COUNTIES OF
 
SOUTHERN NEW JERSEY... BURLINGTON... OCEAN                                
                                                                          
...AND ADJACENT COASTAL WATERS.                                           
                                                                          
AT 310 AM THE ATLANTIC CITY RADAR SHOWED A SEVERE THUNDERSTORM   
OVER CENTRAL BURLINGTON COUNTY MOVING EASTSOUTHEAST AT 20 MILES AN HOUR.  
THE THUNDERSTORM WILL PASS INTO OCEAN COUNTY AND PASS OFFSHORE NEAR  
BARNEGAT WITHIN THE NEXT HOUR.  
                                                                         
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.                                                       
 
RWK

Nearby

Severe Thunderstorm Warnings in New Jersey, 1987 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.