Alert archive / New Jersey / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 45, NWS Philadelphia/Mount Holly

August 3, 1991Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 3, 1991, 8:59 PM EDT for Burlington County, Ocean County, New Jersey. It was in force for 61 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
Aug 3, 1991, 8:59 PM EDT (00:59 UTC)
Expired
Aug 3, 1991, 10:00 PM EDT
In force
61 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Burlington County, NJ, Ocean County, NJ

What was reported inside it

TimeReportWhereRemark
Aug 3, 9:00 PM EDTThunderstorm Wind 0Burlington, NJ
Aug 3, 9:15 PM EDTHail 0.75Ocean, NJ
Aug 3, 9:15 PM EDTThunderstorm Wind 55Ocean, 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 00:00Z, 1.0 hours before the alert went out and 47 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 1991-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 672 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 1991-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
672 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
1325 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Aug 3, 4:31 PM EDT, 4 hours 28 minutes before
PAZ007>12-016-032200-

SPECIAL WEATHER STATEMENT - THUNDERSTORM
NATIONAL WEATHER SERVICE PHILADELPHIA PA
430 PM EST SAT AUG 3 1991

...THUNDERSTORM NEAR PENNSYLVANIA...DELAWARE BORDER MOVING TOWARD
   WESTERN SALEM AND SOUTHWEST GLOUCESTER COUNTIES IN NEW JERSEY...

     AT 430 PM WEATHER SERVICE RADAR SHOWED A THUNDERSTORM IN NORTHERN
DELAWARE NEAR THE PENNSYLVANIA BORDER.  THIS THUNDERSTORM WAS MOVING
VERY SLOWLY EAST AND MAY BE PRODUCING SOME LOCALLY HEAVY RAIN.  GUSTY
WINDS AND CLOUD TO GROUND LIGHTNING MAY ALSO BE ACCOMPANYING THIS
THUNDERSTORM.

     THE THUNDERSTORM WILL CONTINUE TO MOVE SLOWLY EAST AND WILL
REACH SALEM OR SOUTHWEST GLOUCESTER COUNTY IN NEW JERSEY BEFORE 5 PM.
PERSONS ENGAGED IN OUTDOOR ACTIVITIES IN THESE TWO COUNTIES OF
NEW JERSEY SHOULD BE ALERT FOR THE APPROACH OF THIS STORM AND READY TO
MOVE INDOORS IF NECESSARY.
Special weather statement, Aug 3, 6:54 PM EDT, 2 hours 5 minutes before
PAZ007>12-016-032200-

SPECIAL WEATHER STATEMENT - THUNDERSTORMS IN PHILA AREA
NATIONAL WEATHER SERVICE PHILADELPHIA PA
650 PM EST SAT AUG 3 1991

...THUNDERSTORMS MOVING INTO PHILADELPHIA AREA FROM THE WEST...

     AT 645 PM WEATHER SERVICE RADAR SHOWED THUNDERSTORMS FROM CENTRAL
CHESTER COUNTY PENNSYLVANIA TO NORTHERN CHESAPEAKE BAY TO NEAR
BALTIMORE MARYLAND.  THESE THUNDERSTORMS WERE MOVING EAST AROUND 15
MPH AND WILL AFFECT PARTS SOUTHEASTERN PENNSYLVANIA UNTIL AROUND 730
PM.  THESE THUNDERSTORMS MAY CAUSE LOCALLY HEAVY RAIN AND GUSTY
WINDS...AND MAY BE ACCOMPANIED BY DANGEROUS CLOUD TO GROUND LIGHTNING.

     IF OUT OF DOORS WHEN THUNDERSTORMS APPROACH...SEEK SHELTER IN
A NEARBY BUILDING OR IN YOUR CAR.

SP
Special weather statement, Aug 3, 7:04 PM EDT, 1 hour 55 minutes before
DEZ003-002-001-040200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON DE
701 PM EDT SAT AUG 3 1991

AT 7PM EDT RADAR SHOWS A THUNDERSTORM WITH HEAVY RAIN JUST WEST OF
NORTHERN NEW CASTLE COUNTY OF DELAWARE. THIS STORM IS MOVING
SOUTHEASTERLY AT ABOUT 30 MPH AND WILL AFFECT PORTIONS OF NEW CASTLE
COUNTY DURING THE NEXT HOUR.

IF THIS STORM PASSES YOUR AREA...YOU CAN EXPECT LOCALLY HEAVY RAIN
BRIEF GUSTY WINDS IN EXCESS OF 40 MPH AND DANGEROUS LIGHTNING.

BOATERS ON THE UPPER DELAWARE BAY SHOULD STAY ALERT FOR AND AVOID THIS
STORM.

ANOTHER AREA OF THUNDERSTORMS ARE OVER THE UPPER CHESAPEAKE BAY AND
WILL LIKELY MOVE INTO PORTIONS OF CENTRAL DELAWARE BETWEEN 8 AND 9 PM
SEDT THIS EVEING.

ADDITIONAL STATEMENTS WILL BE ISSUED AS REQUIRED BY CONDITIONS.
CKD
Special weather statement, Aug 3, 7:43 PM EDT, 1 hour 16 minutes before
NJZ002>004-040040

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
735 PM EDT SAT AUG 3 1991

...SEVERE THUNDERSTORMS CROSSING SOUTHEAST PENNSYLVANIA...

AT 733 PM...OUR WEATHER SEARCH RADAR INDICATED THUNDERSTORMS WITH HAIL
...INTENSE DOWNPOURS...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING MOVING
FROM SOUTHEAST PENNSYLVANIA CHESTER...DELAWAREW AND PHILADELPHIA COUNTIES
INTO THE WESTERN POTIONS OF SOUTHERN NEW JERSEY CAMDEN...GLOUCESTER AND
SALEM COUNTIES. ALSO FROM EXTREME NORTHERN DELAWARE ACROSS THE UPPER
DELAWARE BAY. 3/4 INCH HAIL HAS BEEN REPORTED WITH THESE STORMS.

OTHER WIDELY SCATTERD STORMS WERE DETECTED IN NORTHERN NEW JERSEY SOUTHERN
SOMERSET COUNTY...ALONG6 THE UPPER EASTERN SHORES OF THE CHESAPEAKE BAY IN
MARYLAND.

SHOWERS WERE ALONG THE NEW JERSEY COAST AND COASTAL WATERS FROM SEASIDE
HEIGHTS TO ASBURY PARK.
Special weather statement, Aug 3, 7:44 PM EDT, 1 hour 15 minutes before
NJZ002>004-040040

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
735 PM EDT SAT AUG 3 1991

...SEVERE THUNDERSTORMS CROSSING SOUTHEAST PENNSYLVANIA...

AT 733 PM...OUR WEATHER SEARCH RADAR INDICATED THUNDERSTORMS WITH HAIL
...INTENSE DOWNPOURS...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING MOVING
FROM SOUTHEAST PENNSYLVANIA CHESTER...DELAWAREW AND PHILADELPHIA COUNTIES
INTO THE WESTERN POTIONS OF SOUTHERN NEW JERSEY CAMDEN...GLOUCESTER AND
SALEM COUNTIES. ALSO FROM EXTREME NORTHERN DELAWARE ACROSS THE UPPER
DELAWARE BAY. 3/4 INCH HAIL HAS BEEN REPORTED WITH THESE STORMS.

OTHER WIDELY SCATTERD STORMS WERE DETECTED IN NORTHERN NEW JERSEY SOUTHERN
SOMERSET COUNTY...ALONG THE UPPER EASTERN SHORES OF THE CHESAPEAKE BAY IN
MARYLAND.

SHOWERS WERE ALONG THE NEW JERSEY COAST AND COASTAL WATERS FROM SEASIDE
HEIGHTS TO ASBURY PARK.

IF THREATENING WEATHER APPROACHES BE PREPARED TO SEEK SHELTER.

MOVEMENT WAS EAST AT 20 MILES AN HOUR.

FXD
Special weather statement, Aug 3, 8:32 PM EDT, 27 minutes before
DEZ002-001-040330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON DE
830 PM EDT SAT AUG 3 1991

RADAR SHOWS AN AREA OF THUNDERSTORMS OVER MARYLANDS EASTERN SHORE NEAR
GOLDSBORO AT 830 PM EDT...THESE STORMS WILL MOVE INTO SOUTHERN KENT
AND NORTH SUSSEX COUNTIES OF DELAWARE BY 9PM THEN SOUTHEAST ACROSS
SOUTHERN KENT AND SUSSEX COUNTIES BY ABOUT 11 PM THIS EVENING.

AS THE STORMS MOVE THROUGH YOU CAN EXPECT HEAVY RAIN GUSTY WINDS TO 50
MPH DANGEROUS LIGHTNING AND POSSIBLE HAIL.

BOATERS ON THE LOWER DELAWARE BAY AND THE ATLANTIC COAST OF DELAWARE
SHOULD MAKE ALL EFFORTS TO AVOID THESE STORMS.

ADDITIONAL STATEMENTS WILL BE ISSUED AS REQUIRED BY CHANGING
CONDITIONS.
CKD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 8:11 PM EDTSevere Thunderstorm WarningPHIBurlington49 min
Aug 3, 8:14 PM EDTSevere Thunderstorm WarningPHISalem46 min
Aug 3, 8:23 PM EDTSevere Thunderstorm WarningPHICumberland67 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.