Alert archive / New Jersey / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 52, NWS Philadelphia/Mount Holly

August 29, 1990Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 29, 1990, 8:21 PM EDT for Cumberland County, New Jersey. It was in force for 69 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 29, 1990, 8:21 PM EDT (00:21 UTC)
Expired: Aug 29, 1990, 9:30 PM EDT
In force: 69 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Cumberland 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 29, 8:40 PM EDT	Thunderstorm Wind 0	Cumberland, 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, 0.4 hours before the alert went out and 56 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: 712 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1284 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KACY 300023
SVRACY
NJC011-300130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
821 PM EDT WED AUG 29 1990
 
THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  930 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH NEW JERSEY
          ...CUMBERLAND
 
AT 815 PM EDT RADAR INDICATED AN AREA OF SEVERE THUNDERSTORMS FROM
NEAR WILMINGTON DELAWARE EXTENDING INTO SALEM COUNTY NEW JERSEY. THESE
STORMS WERE MOVING EAST AT ABOUT 25 MILES AN HOUR.
 
THESE STORMS HAVE PRODUCED HEAVY RAINS AND WIND GUSTS TO 60 MPH.
 
 
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.
 
 
GOGNIAT

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 8:44 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	2 hr
Aug 29, 8:44 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	2 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 1990 Every severe thunderstorm warning in 1990

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.