Alert archive / New Jersey / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 21, NWS New York, NY

July 1, 1990Middlesex County, New Jersey

NWS New York, NY issued this severe thunderstorm warning at Jul 1, 1990, 2:45 PM EDT for Middlesex County, New Jersey. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jul 1, 1990, 2:45 PM EDT (18:45 UTC)
Expired
Jul 1, 1990, 3:30 PM EDT
In force
45 min
Issued by
NWS New York, NY
Area
Whole counties

County Middlesex County, NJ

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 6.8 hours before the alert went out and 110 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 1990-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 413 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 1990-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
413 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
990 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
86 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 KNYC 011846
SVRNYC
NJC023-011930-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
245 PM EDT SUN JUL 1 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 330 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTIES

   IN THE STATE OF NEW JERSEY
      MIDDLESEX...

AT 240 PM RADAR INDICATED A SEVERE THUNDERSTORM MOVING INTO SOUTHERN
MIDDLESEX COUNTY NEW JERSEY. THIS STORM HAS HAD A HISTORY OF
PRODUCING SEVERE WEATHER. THE STORM COULD PASS NEAR JAMESBURG
WITHIN THE NEXT 30 MINUTES.
IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

JRP

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 30, 8:49 PM EDTSevere Thunderstorm WarningOKXEssex, Morris, Passaic56 min
Jun 30, 8:49 PM EDTSevere Thunderstorm WarningOKXBergen56 min
Jul 1, 2:00 PM EDTSevere Thunderstorm WarningOKXHunterdon, Somerset60 min
Jul 1, 2:00 PM EDTSevere Thunderstorm WarningOKXWarren60 min
Jul 1, 2:25 PM EDTSevere Thunderstorm WarningOKXBergen, Essex, Morris50 min
Jul 1, 3:05 PM EDTSevere Thunderstorm WarningOKXHunterdon, Somerset40 min
Jul 1, 3:58 PM EDTSevere Thunderstorm WarningOKXMonmouth47 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1990Every 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; the sounding from the Mesonet's radiosonde archive.