Alert archive / New Jersey / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 38, NWS Philadelphia/Mount Holly

August 9, 1987Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 9, 1987, 11:12 PM EDT for Burlington County, New Jersey. It was in force for 48 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 9, 1987, 11:12 PM EDT (03:12 UTC)
Expired: Aug 10, 1987, 12:00 AM EDT
In force: 48 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	Remark
Aug 9, 11:43 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 00:00Z, 3.2 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: 2260 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 159 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPHL 100312
SVRPHL
NJC005-100400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA PA
1112 PM EDT SUN AUG 9 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 1200 AM EDT FOR THE FOLLOWING COUNTY OF
 
SOUTHERN NEW JERSEY... WESTERN BURLINGTON
                                                                         
AT 11 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED AN INTENSE 
THUNDERSTORM LOCATED NEAR CHERRY HILL NEW JERSEY ON THE CAMDEN- 
BURLINGTON BORDER. THIS STORM IS MOVING EAST AT ABOUT 25 MILES 
AN 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 VULNERABLEc TO HIGH WINDS AND
SHOULD BE AVOIDED.
                                                                         
A SEVERE THUNDERSTORM WATCH CONTINUES FOR THE AREA.
 
RPW

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 9:08 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	67 min
Aug 9, 11:43 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	62 min
Aug 10, 2:18 AM EDT	Flash Flood Warning	PHI	Mercer	4 hr

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.