Alert archive / New Jersey / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 33, NWS Philadelphia/Mount Holly

August 9, 1987Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 9, 1987, 5:59 PM EDT for Burlington County, New Jersey. It was in force for 61 min. 3 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: Aug 9, 1987, 5:59 PM EDT (21:59 UTC)
Expired: Aug 9, 1987, 7:00 PM EDT
In force: 61 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Burlington 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
Aug 9, 6:05 PM EDT	Thunderstorm Wind 0	Burlington, NJ
Aug 9, 6:28 PM EDT	Thunderstorm Wind 0	Burlington, NJ
Aug 9, 6:40 PM EDT	Thunderstorm Wind 0	Burlington, 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, 10.0 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-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: 658 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 691 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 95 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 092200
SVRPHL
NJC005-092300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA PA
559 PM EDT SUN AUG 9 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 700 PM EDT FOR THE FOLLOWING COUNTY OF
 
SOUTHERN NEW JERSEY... WESTERN BURLINGTON
                                                                         
AT 555 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE 
THUNDERSTORM OVER WESTERN BURLINGTON COUNTY. THIS THUNDERSTORM WAS 
MOVING SLOWLY EAST AND SHOULD MOVE ACROSS THE WESTERN PART OF  
BURLINGTON COUNTY BY 655 PM EDT. 
 
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 T)O HIGH WINDS AND
SHOULD BE AVOIDED.
                                                                         
A SEVERE THUNDERSTORM WATCH CONTINUES FOR THE AREA.
 
TCB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 5:26 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	64 min

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.