Alert archive / New Jersey / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 18, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 9, 1993, 9:32 PM EDT for Gloucester County, New Jersey. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- Jun 9, 1993, 9:32 PM EDT (01:32 UTC)
- Expired
- Jun 9, 1993, 10:30 PM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Gloucester County, NJ
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 00:00Z, 1.5 hours before the alert went out and 63 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
- 2342 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 1353 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 12.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHL 100135 RRA SVRPHL NJC015-100230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHILADELPHIA PA 932 PM EDT WED JUN 9 1993 THE NATIONAL WEATHER SERVICE IN PHILADELPHIA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH NEW JERSEY ...EASTERN GLOUCESTER COUNTY AT 932 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF ELMER IN SALEM COUNTY. IT WAS MOVING EAST AT 35 TO 40 MPH. THIS STORM WILL MOVE ACROSS THE EASTERN PORTION OF GLOUCESTER COUNTY BY 1030 PM EDT. A SEVERE THUNDERSTORM WATCH IS STILL IN EFFECT UNTIL 11 PM EDT. THIS IS A DANGEROUS STORM. IF YOU ARE IN THE WARNED AREA...PREPARE FOR STRONG DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN AND DEADLY LIGHTNING. SHOULD THE STORM APPROACH YOU...SEEK IMMEDIATE SHELTER INDOORS...BUT DO NOT STAND NEAR WINDOWS. MOBILE HOMES ARE MOST VULNERABLE T:O HIGH WINDS AND SHOULD BE AVOIDED. NC
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 9, 5:51 PM EDT, 3 hours 41 minutes before
PAZ011-016- 100000 - SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALLENTOWN PA 550 PM EDT WED JUN 9 1993 ...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE LEHIGH VALLEY... RADAR INDICATES THE HEAVY TO SEVERE THUNDERSTORMS THAT AFFECTED EAST CENTRAL PENNSYLVANIA AND THE POCONOS HAVE MOVED OUT OF THE AREA AND INTO SOUTHERN NEW JERSEY. THUNDERSTORM DEVELOPMENT TO SEVERE LEVELS IS NOT EPECTED OVER EAST CENTRAL PENNSYLVANIA AND THE POCONOS FOR THE BALANACE OF THE EVENING. LOEPER
Local storm report, Jun 9, 6:37 PM EDT, 2 hours 55 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON DE
637 PM EDT WED JUN 9 1993
DATE/TIME EVENT
09/1646 EDT DIME SIZE HAIL WAS REPORTED BY WEATHER SPOTTER IN
GLENN MILLS AREA OF PENNSYLVANIA.
09/1734 EDT RETIRED WEATHER SERVICE METEOROLOGICAL TECHNICIAN
REPORTED HAIL 1/4 IN. IN DIAMETER IN N. WILMINGTON
AT 39TH ST.
09/1735 EDT SKYWARN REPORTED PEA TO DIME SIZE HAIL IN THE
E. WILMINGTON AREA.
VAUGHANLocal storm report, Jun 9, 6:40 PM EDT, 2 hours 52 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON DE
637 PM EDT WED JUN 9 1993
DATE/TIME EVENT
09/1646 EDT DIME SIZE HAIL WAS REPORTED BY WEATHER SPOTTER IN
GLENN MILLS AREA OF PENNSYLVANIA.
09/1734 EDT RETIRED WEATHER SERVICE METEOROLOGICAL TECHNICIAN
REPORTED HAIL 1/4 IN. IN DIAMETER IN N. WILMINGTON
AT 39TH ST.
09/1735 EDT SKYWARN REPORTED PEA TO DIME SIZE HAIL IN THE
E. WILMINGTON ^AREA.
VAUGHANSpecial weather statement, Jun 9, 7:28 PM EDT, 2 hours 4 minutes before
NJZ003-004-100145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 728 PM EDT WED JUN 9 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 1100 PM FOR ATLANTIC...BURLINGTON...CUMBERLAND...CAPE MAY AND OCEAN COUNTIES AND THE ADJACENT COASTAL WATERS... AT 728 PM...OUR WEATHER SEARCH RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN OVER SOUTH CENTRAL MONMOUTH COUNTY...NEAR HOWELL. OTHER THUNDERSTORMS WITH VERY HEAVY RAINS WERE OVER SOUTHEAST PENNSYLVANIA...WITH THE HEAVIEST RAIN IN NORTHEAST CHESTER COUNTY. A THUNDERSTORM WITH VERY HEAVY RAINS...STRONG GUSTY WINDS AND HAIL WAS OVER NORTHWEST HARFORD COUNTY MARYLAND. A SEVERE THUNDERSTORM WARNING IS IN EFFECT IN YORK COUNTY PENNSYLVANIA FOR THIS STORM. OTHER SHOWERS AND THUNDERSTORMS WERE OVER EAST CENTRAL MARYLAND AND EASTERN VIRGINIA...STRETCHING FROM HOWARD COUNTY MARYLAND SOUTHWEST TO ORANGE COUNTY VIRGINIA. MOVEMENT WAS EAST AT 40 MILES AN HOUR. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS. HAYES/SCURA/MENNELLA
Special weather statement, Jun 9, 7:41 PM EDT, 1 hour 51 minutes before
NJZ003-004-100145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 728 PM EDT WED JUN 9 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 1100 PM FOR ATLANTIC...BURLINGTON...CUMBERLAND...CAPE MAY AND OCEAN COUNTIES AND THE ADJACENT COASTAL WATERS... AT 728 PM...OUR WEATHER SEARCH RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN OVER SOUTH CENTRAL MONMOUTH COUNTY...NEAR HOWELL. OTHER THUNDERSTORMS WITH VERY HEAVY RAINS WERE OVER SOUTHEAST PENNSYLVANIA...WITH THE HEAVIEST RAIN IN NORTHEAST CHESTER COUNTY. A THUNDERSTORM WITH VERY HEAVY RAINS...STRONG GUSTY WINDS AND HAIL WAS OVER NORTHWEST HARFORD COUNTY MARYLAND. A SEVERE THUNDERSTORM WARNING IS IN EFFECT IN YORK COUNTY PENNSYLVANIA FOR THIS STORM. OTHER SHOWERS AND THUNDERSTORMS WERE OVER EAST CENTRAL MARYLAND AND EASTERN VIRGINIA...STRETCHING FROM HOWARD COUNTY MARYLAND SOUTHWEST TO ORANGE COUNTY VIRGINIA. MOVEMENT WAS EAST AT 40 MILES AN HOUR. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS. HAYES/SCURA/MENNELLA
Special weather statement, Jun 9, 7:56 PM EDT, 1 hour 36 minutes before
PAZ012-NJZ002>004-006-100200- SPECIAL WEATHER STATEMENT...SEVERE THUNDERTORMS NATIONAL WEATHER SERVICE PHILADELPHIA PA 750 PM EDT WED JUN 09 1993 ...THE SEVERE THUNDERSTORM WATCH FOR THE DELAWARE VALLEY AND ADJACENT AREAS OF SOUTHERN NEW JERSEY HAS BEEN EXTENDED UNTIL 10 PM TONIGHT... AT 750 PM RADAR SHOWED SEVERAL THUNDERSTORMS OVER SOUTHEASTERN PENNSYLVANIA...SOME SEVERE...MOVING EAST AT AROUND 40 MILES AN HOUR. THESE STORMS SHOULD MOVE EAST OF THE DELAWARE RIVER IN THE NEXT HOUR THEN OFF THE COAST BY 10PM EDT. A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 845PM EDT FOR EASTERN MONTGOMERY AND PHILADELPHIA COUNTIES. THESE STORM ARE SHORT LIVED...BUT POTENTIALLY DANGEROUS. MOTORIST MAY HAVE TO PULL OFF TO THE SIDE OF THE ROAD UNTIL THE STORMS PASS BECAUSE THE RAIN WILL BRIEFLY COME DOWN IN BUCKETS. NC
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 8:38 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 67 min |
| Jun 9, 9:06 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 69 min |
| Jun 9, 9:27 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic | 63 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.