Alert archive / New Jersey / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 13, NWS New York, NY

May 31, 1991Hunterdon County, Morris County, Warren County, New Jersey

NWS New York, NY issued this severe thunderstorm warning at May 31, 1991, 2:24 PM EDT for Hunterdon County, Morris County, Warren County, New Jersey. It was in force for 66 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 31, 1991, 2:24 PM EDT (18:24 UTC)
Expired
May 31, 1991, 3:30 PM EDT
In force
66 min
Issued by
NWS New York, NY
Area
Whole counties

Counties Hunterdon County, NJ, Morris County, NJ, Warren County, NJ

What was reported inside it

TimeReportWhereRemark
May 31, 2:45 PM EDTThunderstorm Wind 0Hunterdon, NJ
May 31, 3:00 PM EDTThunderstorm Wind 0Morris, NJ
May 31, 3:15 PM EDTThunderstorm Wind 61Hunterdon, NJ

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 6.4 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, Atlantic City In, NJ at 12:00Z on 1991-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 456 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 1991-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 square meters per square second.193958Sfc1 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
456 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1153 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
-37 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 KNYC 311825
SVRNYC
NJC027-019-041-311930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK CITY NY
224 PM EDT FRI MAY 31 1991
 
THE NATIONAL WEATHER SERVICE IN NEW YORK CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...S...
 
IN NORTH CENTRAL NEW JERSEY
 
   ...SOUTHWESTERN MORRIS COUNTY
 
IN NORTHWEST NEW JERSEY
 
   ...HUNTERDON COUNTY...SOUTHERN WARREN COUNTY
 
 
NATIONAL WEATHER SERVICE SKYWARN SPOTTER IN BELVIDERE REPORTED A
SEVERE THUNDERSTORM IN PROGRESS.  TREES AND POWERLINES WERE
REPORTED DOWN.
 
THIS SEVERE THUNDERSTORM WAS PART OF A LINE OF STRONG THUNDERSTORMS
WHICH WERE MOVING EASTSOUTHEAST AT 35 MILES AN HOUR.
 
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND 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 ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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, May 31, 1:45 PM EDT, 39 minutes before
NYZ014>017-NJZ001-005-007-015-302000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
145 PM EDT FRI MAY 31 1991

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 8 P.M....

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR MOST OF NEW JERSEY AND SOUTHEAST NEW YORK UNTIL 8 P.M.  ALL
COUNTIES WITHIN NATIONAL WEATHER SERVICE NEW YORK CITY.S AREA OF
RESPONSIBILITY ARE INCLUDED IN THIS SEVERE THUNDERSTORM WATCH.

AT 1:40 P.M. NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF SHOWERS
AND THUNDERSTORMS EXTENDING FROM NEAR ALBANY...NEW YORK SOUTHWEST
ACROSS EASTERN PENNSYLAVANIA TO NORTHWEST OF READING.  SOME OF THESE
THUNDERSTORMS CONTAIN HEAVY RAIN AND STRONG GUSTyY WINDS.  THIS LINE
WAS MOVING SOUTHEAST AT ABOUT 35 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUED THIS AFTERNOON AS NEEDED OVER
NOAA WEATHER RADIO...COMMERCIAL RADIO AND/OR TELEVISION...SO STAY
TUNED.

GTC
Special weather statement, May 31, 1:49 PM EDT, 35 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW YORK NY
130 PM EDT FRI MAY 31 1991

...PLEASE DO NOT USE AFTER 3 PM EDT...

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 PM EDT FOR THE
HUDSON VALLEY...NORTHERN AND CENTRAL NEW JERSEY...THE METROPOLITAN
AREA AND LONG ISLAND.

RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN OVER CARBON COUNTY
IN EASTERN PENNSYLVAINIA.  THIS THUNDERSTORM WAS PART OF AN AREA OF
THUNDERSTORMS WHICH EXTENDED FROM SCHUYKILL COUNTY IN NORTHEAST
PENNSYLVANIA NORTHEAST TO HERKIMER AND RENSSELAER COUNTIES IN NEW YORK.

THE AREA OF THUNDERSTORMS WAS MOVING TO THE SOUTHEAST AT 30 MILES PER HOUR.

MIESELL
/

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 2:17 PM EDTSevere Thunderstorm WarningOKXMiddlesex, Somerset, Union58 min
May 31, 3:10 PM EDTSevere Thunderstorm WarningOKXMonmouth65 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1991Every severe thunderstorm warning in 1991

Sources

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