Alert archive / New Jersey / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 2, NWS Philadelphia/Mount Holly

May 12, 1987Atlantic County, Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 12, 1987, 4:54 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 56 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: May 12, 1987, 4:54 PM EDT (20:54 UTC)
Expired: May 12, 1987, 5:50 PM EDT
In force: 56 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

Counties Atlantic County, NJ, 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
May 12, 5:15 PM EDT	Thunderstorm Wind 52	Burlington, NJ
May 12, 5:25 PM EDT	Thunderstorm Wind 0	Atlantic, NJ
May 12, 5:35 PM EDT	Thunderstorm Wind 52	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 12:00Z, 8.9 hours before the alert went out and 32 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1817 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 58 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 122053
SVRACY
NJC001-005-029-122150-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
454 PM EDT TUE MAY 12 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 550 PM EDT FOR THE FOLLOWING COUNTIES OF
 
SOUTHERN NEW JERSEY... NORTHERN ATLANTIC... SOUTHERN BURLINGTON...
   SOUTHERN OCEAN
 
...AND ADJACENT COASTAL WATERS.
                                                                         
AT 445PM RADAR SHOWED AN INTENSE THUNDERSTORM NEAR HAMMONTON IN N 
NORTHERN ATLANTIC COUNTY NEW JERSEY. THE STORM IS MOVING IN AN EASTER- 
LY DIRECTION AT 25 TO 30 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 nMOST VULNERABLE TO HIGH WINDS AND
SHOULD BE AVOIDED.
                                                                         
A SEVERE THUNDERSTORM WATCH CONTINUES FOR THE AREA.
 
WPA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 3:34 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	61 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.