Alert archive / New Jersey / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 17, NWS Philadelphia/Mount Holly

June 9, 1993Atlantic County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 9, 1993, 9:27 PM EDT for Atlantic County, New Jersey. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Jun 9, 1993, 9:27 PM EDT (01:27 UTC)
Expired
Jun 9, 1993, 10:30 PM EDT
In force
63 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Atlantic County, NJ

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 00:00Z, 1.5 hours before the alert went out and 12 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-pSkew-T log-p diagram, Atlantic City In, NJ at 00:00Z on 1993-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2342 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Atlantic City In, NJ at 00:00Z on 1993-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2342 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
1353 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
223 m²/s²
Significant tornado parameter
1.7
Supercell composite
12.6

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KACY 100133 RRA
SVRACY
NJC001-100230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
927 PM EDT WED JUN 9 1993
 
THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH NEW JERSEY
 
   ...ATLANTIC COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
AT 930 PM NATIONAL WEATHER SERVICE RADAR IN ATLANTIC CITY DETECTED A
SEVERE THUNDERSTORM OVER THE NORTHEAST CORNER OF SALEM COUNTY. THIS
STORM IS EXPECTED TO MOVE INTO THE WESTERN PARTS OF ATLANTIC COUNTY BY
1000 PM BRINGING STRONG WINDS...HEAVY DOWNPOURS AND LARGE HAIL.
 
THE THUNDERSTORM WAS MOVING EAST AT 35 MILES AN HOUR.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
SCURA/MENNELLA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 8:38 PM EDTSevere Thunderstorm WarningPHIOcean67 min
Jun 9, 9:06 PM EDTSevere Thunderstorm WarningPHISalem69 min
Jun 9, 9:32 PM EDTSevere Thunderstorm WarningPHIGloucester58 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1993Every severe thunderstorm warning in 1993

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.