Alert archive / New Jersey / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 31, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 28, 1993, 9:13 PM EDT for Camden County, Gloucester County, New Jersey. It was in force for 47 min.
The area
The counties it named.
The facts
- Issued
- Aug 28, 1993, 9:13 PM EDT (01:13 UTC)
- Expired
- Aug 28, 1993, 10:00 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Camden County, NJ, Gloucester County, NJ
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 00:00Z, 1.2 hours before the alert went out and 58 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.
- Mixed-layer CAPE
- 2663 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1257 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KPHL 290113 RRA
SVRPHL
NJC007-015-290200-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA PA
913 PM EDT SAT AUG 28 1993
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1000 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE SOUTHWEST PART OF NEW JERSEY
CAMDEN...GLOUCESTER
AT 910 PM RADAR INDICATED A SEVERE THUNDERSTORM OVER
WESTERN CAMDEN AND GLOUCESTER COUNTIES MOVING TOWARD THE
EAST/SOUTHEAST AT 20 MPH.
AT 910 PM...75 MPH WINDS WERE REPORTED BY A SPOTTER IN WESTERN
GLOUCESTER COUNTY.
THIS IS A DANGEROUS STORM AND PEOPLE IN THE WARNED AREA SHOULD BE
PREPARED FOR STRONG DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN
AND LIGHTNING. SHOULD THE STORM APPROACH YOU...SEEK IMMEDIATE
SHELTER. MOBILE HOMES ARE MOST VULNERABLE TO HIGH WINDS AND
SHOULD BE AVOIDED.
HEAVY RAINS WITH THIS THUNDERSTORM MAY CAUSE FLOODING
OF SMALL STREAMS AND UNDERPASSES.
RNSWhat 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 28, 7:27 PM EDT, 1 hour 46 minutes before
DEZ003-002-290130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON DE 727 PM EDT SAT AUG 28 1993 ...THUNDERSTORMS HEADED FOR NORTHERN DELAWARE... AT 720 PM NATIONAL WEATHER RADAR SHOWED AN AREA OF THUNDERSTORMS FROM HARFORD COUNTY MARYLAND TO LANCASTER AND YORK COUNTIES PENNSYLVANIA. THE STORMS WERE MOVING SOUTHEAST AT 25 MPH AND WILL BE MOVING INTO NEW CASTLE COUNTY DELAWARE WITHIN THE HOUR. THESE STORMS HAVE A HISTORY OF STRONG GUSTY WINDS...FEQUENT LIGHTNING...POSSIBLE HAIL AND HEAVY DOWNPOURS. PERSONS IN THE VICINITY OF THE APPROACHING STORMS SHOULD FIND SAFE SHELTER UNTIL THE STORMS PASS OR DISSIPATE. MOTORIST ARE URGED TO USE CAUTION IF CAUGHT IN A HEAVY DOWNPOUR. AS THE STORMS APPROACH THE COASTAL AREAS OF NORTHERN AND CENTRAL DELAWARE...BOATERS SHOULD HEAD FOR SAFE HARBOR. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES ON THIS STORM SITUATION. LYLES
Special weather statement, Aug 28, 7:29 PM EDT, 1 hour 44 minutes before
DEZ003-002-290130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON DE 727 PM EDT SAT AUG 28 1993 ...THUNDERSTORMS HEADED FOR NORTHERN DELAWARE... AT 720 PM NATIONAL WEATHER RADAR SHOWED AN AREA OF THUNDERSTORMS FROM HARFORD COUNTY MARYLAND TO LANCASTER AND YORK COUNTIES PENNSYLVANIA. THE STORMS WERE MOVING SOUTHEAST AT 25 MPH AND WILL BE MOVING INTO NEW CASTLE COUNTY DELAWARE WITHIN THE HOUR. THESE STORMS HAVE A HISTORY OF STRONG GUSTY WINDS...FEQUENT LIGHTNING...POSSIBLE HAIL AND HEAVY DOWNPOURS. PERSONS IN THE VICINITY OF THE APPROACHING STORMS SHOULD FIND SAFE SHELTER UNTIL THE STORMS PASS OR DISSIPATE. MOTORIST ARE URGED TO USE CAUTION IF CAUGHT IN A HEAVY DOWNPOUR. AS THE STORMS APPROACH THE COASTAL AREAS OF NORTHERN AND CENTRAL DELAWARE...BOATERS SHOULD HEAD FOR SAFE HARBOR. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES ON THIS STORM SITUATION. LYLES
Special weather statement, Aug 28, 7:33 PM EDT, 1 hour 40 minutes before
NJZ003-004-006-290045- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 733 PM EDT SAT AUG 28 1993 ...STRONG THUNDERSTROMS CONTINUE TO TREK SOUTHEAST... AT 733 PM...OUR WEATHER SEARCH RADAR AT ATLANTIC CITY INDICATED SCATTERED STRONG TO POSSIBLE SEVERE THUNDERSTORMS FROM THE LOWER SUSQUEHANNA VALLEY OF PENNSYLVANIA ACROSS THE SOUTHEAST CORNER OF PENNSYLVANIA INTO NORTHEAST MARYLAND AND NORTHERN DELAWARE. THESE STORMS HAVE GUSTY WINDS WHICH HAVE ALREADY CAUSED DOWN TRESS AND POWER LINES. TORRENTIAL RAINS...FREQUENT DANGEROUS LIGHTNING AND POSSIBLE SMALL HAIL ACCOMPANY THESE STORMS. SHOWER AND THUNDERSTORMS...SOME WITH VERY HEAVY RAINS...WERE SCATTERED OVER CENTRAL AND WESTERN SOUTHERN NEW JERSEY...NORTHERN DELAWARE INTO THE NORTHER HALF OF MARYLAND. OTHER THUNDERSTORMS WERE INDICATED FROM THE COASTAL WATERS OF LONG ISLAND TO THE SOUTH AND EAST OVER THE OCEAN. REMEMBER...IF THREATENING WEATHER APPROACHES BE PREPARED TO SEEK SHELTER. SCURA/DIETZMANN
Special weather statement, Aug 28, 7:53 PM EDT, 1 hour 20 minutes before
NJZ003-004-006-290045- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 733 PM EDT SAT AUG 28 1993 ...STRONG THUNDERSTROMS CONTINUE TO TREK SOUTHEAST... AT 733 PM...OUR WEATHER SEARCH RADAR AT ATLANTIC CITY INDICATED SCATTERED STRONG TO POSSIBLE SEVERE THUNDERSTORMS FROM THE LOWER SUSQUEHANNA VALLEY OF PENNSYLVANIA ACROSS THE SOUTHEAST CORNER OF PENNSYLVANIA INTO NORTHEAST MARYLAND AND NORTHERN DELAWARE. THESE STORMS HAVE GUSTY WINDS WHICH HAVE ALREADY CAUSED DOWN TRESS AND POWER LINES. TORRENTIAL RAINS...FREQUENT DANGEROUS LIGHTNING AND POSSIBLE SMALL HAIL ACCOMPANY THESE STORMS. SHOWER AND THUNDERSTORMS...SOME WITH VERY HEAVY RAINS...WERE SCATTERED OVER CENTRAL AND WESTERN SOUTHERN NEW JERSEY...NORTHERN DELAWARE INTO THE NORTHER HALF OF MARYLAND. OTHER THUNDERSTORMS WERE INDICATED FROM THE COASTAL WATERS OF LONG ISLAND TO THE SOUTH AND EAST OVER THE OCEAN. REMEMBER...IF THREATENING WEATHER APPROACHES BE PREPARED TO SEEK SHELTER. SCURA/DIETZMANN
Special weather statement, Aug 28, 8:33 PM EDT, 40 minutes before
NJZ003-004-006-290145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 833 PM EDT SAT AUG 28 1993 ...STRONG THUNDERSTROMS MOVING ACROSS SOUTHERN NEW JERSEY... AT 833 PM...OUR WEATHER SEARCH RADAR AT ATLANTIC CITY INDICATED SCATTERED STRONG THUNDERSTORMS ALONG COASTAL SOUTHERN NEW JERSEY FROM BEACH HAVEN ACROSS LITTLE EGG INLET TO NEAR BRIGANTINE AND MOVING INTO THE COASTAL WATERS...ALSO CENTRAL BURLINGTON COUNTY AND MOVING ACROSS THE UPPR DELAWARE BAY INTO WESTERN SALEM COUNTY. THESE STORMS COULD PRODUCE BRIEF STORNG GUSTY WINDS...TORRENTIAL DOWNPOURS...POSSIBLE SMALL HAIL AND FREQUENT DANGEROUS LIGHTNING AS THEY CROSS SOUTHERN NEW JERSEY AND THE COATSAL WATERS OVER THE NEXT FEW HOURS. THUNDERSTORMS...WITH VERY HEAVY RAINS...WERE ALSO DETECTED IN SOUTHEAST PENNSYLVANIA IN SOUTHERN CHESTER AND DELAWARE COUNTIES...NORTHERN DELAWARE NEAR DELAWARE CITY AND WILMINGTON INTO THE UPPER DELAWARE BAY. OTHER SHOWERS AND THUNDERSTORMS WERE SCATTERED FROM NORTHEAST MARYLAND ACROSS CENTRAL MARYLAND TO WASHINGTON DC. ALL MOVEMENT WAS TO THE SOUTHEAST AT 20 MILES AN HOUR. REMEMBER...IF THREATENING WEATHER APPROACHES BE PREPARED TO SEEK SHELTER. MARINERS SHOULD BE ALERT FOR APPROACHING STORMS AND SEEK SAFE PORT. SCURA/DIETZMANN
Special weather statement, Aug 28, 8:48 PM EDT, 25 minutes before
NJZ003-004-006-290145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 833 PM EDT SAT AUG 28 1993 ...STRONG THUNDERSTROMS MOVING ACROSS SOUTHERN NEW JERSEY... AT 833 PM...OUR WEATHER SEARCH RADAR AT ATLANTIC CITY INDICATED SCATTERED STRONG THUNDERSTORMS ALONG COASTAL SOUTHERN NEW JERSEY FROM BEACH HAVEN ACROSS LITTLE EGG INLET TO NEAR BRIGANTINE AND MOVING INTO THE COASTAL WATERS...ALSO CENTRAL BURLINGTON COUNTY AND MOVING ACROSS THE UPPR DELAWARE BAY INTO WESTERN SALEM COUNTY. THESE STORMS COULD PRODUCE BRIEF STORNG GUSTY WINDS...TORRENTIAL DOWNPOURS...POSSIBLE SMALL HAIL AND FREQUENT DANGEROUS LIGHTNING AS THEY CROSS SOUTHERN NEW JERSEY AND THE COATSAL WATERS OVER THE NEXT FEW HOURS. THUNDERSTORMS...WITH VERY HEAVY RAINS...WERE ALSO DETECTED IN SOUTHEAST PENNSYLVANIA IN SOUTHERN CHESTER AND DELAWARE COUNTIES...NORTHERN DELAWARE NEAR DELAWARE CITY AND WILMINGTON INTO THE UPPER DELAWARE BAY. OTHER SHOWERS AND THUNDERSTORMS WERE SCATTERED FROM NORTHEAST MARYLAND ACROSS CENTRAL MARYLAND TO WASHINGTON DC. ALL MOVEMENT WAS TO THE SOUTHEAST AT 20 MILES AN HOUR. REMEMBER...IF THREATENING WEATHER APPROACHES BE PREPARED TO SEEK SHELTER. MARINERS SHOULD BE ALERT FOR APPROACHING STORMS AND SEEK SAFE PORT. SCURA/DIETZMANN
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 9:31 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington | 59 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 1993Every severe thunderstorm warning in 1993
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.