Alert archive / New Jersey / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 56, NWS Philadelphia/Mount Holly

June 30, 1994Mercer County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 30, 1994, 5:43 PM EDT for Mercer County, New Jersey. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Jun 30, 1994, 5:43 PM EDT (21:43 UTC)
Expired
Jun 30, 1994, 6:30 PM EDT
In force
47 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Mercer County, NJ

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 9.7 hours before the alert went out and 94 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 12:00Z on 1994-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 77 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 12:00Z on 1994-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 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
77 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
1014 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
116 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 
WUUS1 KPHL 302148 RRA
SVRPHL
NJC021-302230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
543 PM EDT THU JUN 30 1994
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL NEW JERSEY
 
   ...MERCER COUNTY
 
AT 545 PM EDT RADAR SHOWED A DEVELOPING LINE OF THUNDERSTORMS OVER
BUCKS COUNTY PENNSYLVANIA. ANY STORM HAS THE POTENTIAL TO PRODUCE
WIND GUSTS TO 58 MPH...HAIL AND VERY HEAVY RAIN AS WELL AS CONTINUOUS
CLOUD TO GROUND LIGHTNING.
 
THE STORM WAS MOVING TO THE EAST 20 MPH. THE SHORT TERMED HEAVY
RAIN MAY CAUSE SIGNIFICANT RISES ON CREEKS AND STREAMS WITHIN
THE COUNTY.
 
THIS IS A DANGEROUS STORM. PERSONS IN MERCER COUNTY SHOULD TAKE
SHELTER UNTIL THE STORM PASSES.
 
EBERWINE
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
EBERWINE
 
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN THE WARNED AREA...PREPARE
FOR STRONG DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN AND DEADLY
LIGHTNING.  SHOULD THE STORM APPROACH YOU...SEEK IMMEDIATE SHELTER
INDOORS...BUT DO NOT STAND NEAR WINDOWS.  MOBILE HOMES ARE MOST
VULNERABLE TO HIGH WINDS AND SHOULD BE AVOIDED.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 9:26 PM EDTSevere Thunderstorm WarningPHICamden49 min
Jun 29, 9:26 PM EDTSevere Thunderstorm WarningPHIGloucester39 min
Jun 29, 9:50 PM EDTSevere Thunderstorm WarningPHIBurlington40 min
Jun 29, 10:19 PM EDTSevere Thunderstorm WarningPHIOcean41 min
Jun 30, 5:03 PM EDTSevere Thunderstorm WarningPHICumberland42 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1994Every severe thunderstorm warning in 1994

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.