Alert archive / New Jersey / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 121, NWS Philadelphia/Mount Holly

November 1, 1994Morris County, Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Nov 1, 1994, 5:05 PM EST for Morris County, Sussex County, New Jersey. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Nov 1, 1994, 5:05 PM EST (22:05 UTC)
Expired
Nov 1, 1994, 6:00 PM EST
In force
55 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Morris County, NJ, Sussex County, NJ

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.1 hours before the alert went out and 148 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, Brookhaven, NY at 12:00Z on 1994-11-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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, Brookhaven, NY at 12:00Z on 1994-11-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 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
17 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
146 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 KPHL 012206 RRA
SVRPHL
NJC027-037-012300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
505 PM EST TUE NOV 1 1994
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  600 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH NEW JERSEY
 
   ...MORRIS COUNTY
 
IN NORTHWEST NEW JERSEY
 
   ...SUSSEX COUNTY
 
NATIONAL WEATHER SERVICE DOPPLER RADAR WAS INDICATING THAT A SQUALL LINE
OF SEVERE THUNDERSTORMS WAS ABOUT TO ENTER THE SOUTHWEST TIP OF MORRIS
COUNTY NEAR WASHINGTON. THIS SQUALL LINE HAS HAD A HISTORY OF PRODUCING
WIND GUSTS UP TO 60 MPH AS IT PASSED THROUGH EASTERN PENNSYLVANIA AND
SOUTHWEST NEW JERSEY.
 
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 SHEVLTER
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
Nov 1, 4:40 PM ESTSevere Thunderstorm WarningPHIAtlantic, Burlington, Cape May, Ocean65 min
Nov 1, 4:40 PM ESTSevere Thunderstorm WarningPHIHunterdon, Warren65 min
Nov 1, 4:40 PM ESTSevere Thunderstorm WarningPHIMercer, Middlesex, Monmouth, Somerset65 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.