Alert archive / New Jersey / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 6, NWS New York, NY

June 21, 1990Morris County, Sussex County, New Jersey

NWS New York, NY issued this severe thunderstorm warning at Jun 21, 1990, 8:00 PM EDT for Morris County, Sussex County, New Jersey. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jun 21, 1990, 8:00 PM EDT (00:00 UTC)
Expired
Jun 21, 1990, 8:45 PM EDT
In force
45 min
Issued by
NWS New York, NY
Area
Whole counties

Counties Morris County, NJ, Sussex 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 00:00Z, 0.0 hours before the alert went out and 173 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 1990-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1990-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNYC 220003
SVRNYC
NJC037-027-220045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
800 PM EDT THU JUN 21 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 845 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTY

   IN THE STATE OF NEW JERSEY
      SUSSEX...MORRIS

RADAR SHOWED A POTENTIALLY SEVERE THUNDERSTORM OVER NORTHWESTERN
NEW JERSEY AT 8 PM EDT. THE STORM IS MOVING TO THE SOUTHEAST ABOUT
25 MILES AN HOUR. THIS WOULD TAKE THE STORM THROUGH CENTRAL SUSSEX
COUNTY AND INTO NORTHERN MORRIS COUNTY DURING THE NEXT HALF HOUR.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS 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 ROADWAYS QUICKLY...
AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.

GRANT

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 21, 7:50 PM EDT, 10 minutes before
CTZ004-005-220030

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER BRIDGEPORT CT
745 PM EDT THU JUN 21 1990

... A STRONG THUNDERSTORM NEAR NEWBURGH NEW YORK MOVING SOUTHEAST
AT 35 MPH EXPECTED TO MOVE INTO SOUTHWESTERN FAIRFIELD  COUNTY BY
800 PM.

NATIONAL WEATHER SERVICE RADAR SHOWS A STRONG THUNDERSTORM NEAR
NEWBURGH NEW YORK MOVING SOUTHEAST AT 35 MPH. THIS STRONG THUNDERSTORM
IS MOVING TO THE SOUTHEAST AT 35 MPH AND IS EXPECTED  TO PRODUCE
STRONG GUSTY WINDS....LOCALLY HEAVY DOUNPOURS FREQUENT LIGHTNING AND
POSSIBLE HAIL.

PERSONS LIVING IN SOUTHWESTERN  FAIRFIELD COUNTY SHOULD REMAIN ON THE
ALERT FOR THIS THUNDERSTORM ACTIVITY AND SEEK SHELTER IF THIS STRONG
THUNDERSTORM NEARS YOUR AREA DURING THE  NEXT FEW HOURS.

WALKER

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.