Alert archive / New Jersey / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 21, NWS Philadelphia/Mount Holly

June 30, 1991Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 30, 1991, 5:26 PM EDT for Ocean County, New Jersey. It was in force for 64 min. 1 report 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: Jun 30, 1991, 5:26 PM EDT (21:26 UTC)
Expired: Jun 30, 1991, 6:30 PM EDT
In force: 64 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Ocean County, NJ

What was reported inside it

Time	Report	Where	Remark
Jun 30, 6:00 PM EDT	Thunderstorm Wind 0	Ocean, 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, 9.4 hours before the alert went out and 51 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 888 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1352 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KACY 302127
SVRACY
NJC029-302230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
526 PM EDT SUN JUN 30 1991
 
THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH NEW JERSEY
 
   ...OCEAN COUNTY
 
AND FOR THE ADJACENT COASTAL WATERS
 
 
AT 525 PM WEATHER SERVICE RADAR INDICATED A SEVERE TUNDERSTORM JUST
SOUTH OF MCGUIRE AIR FORCE BASE IN BURLINGTON COUNTY. THIS STORM HAS
THE POTENTAL TO PRODUCE DAMAGING WIND...VERY HEAVY RAINS AND HAIL.
 
THE THUNDERSTORM WAS MOVING SOUTHEAST AT 40 TO 45 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 DRZIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
HAYES/SCURA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 2:16 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	59 min
Jun 30, 2:43 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	62 min
Jun 30, 5:06 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	54 min
Jun 30, 5:19 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland	56 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1991 Every 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.