Alert archive / New Jersey / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 38, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Oct 21, 1993, 5:57 PM EDT for Atlantic County, New Jersey. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Oct 21, 1993, 5:57 PM EDT (21:57 UTC)
- Expired
- Oct 21, 1993, 7:00 PM EDT
- In force
- 63 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Atlantic County, NJ
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 12:00Z, 10.0 hours before the alert went out and 12 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
- 228 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 681 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KACY 212159 RRA SVRACY NJC001-212300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 557 PM EDT THU OCT 21 1993 THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH NEW JERSEY ...ATLANTIC COUNTY AND THE ADJACENT COASTAL WATERS WEATHER SERVICE RADAR WAS INDICATING A LINE OF STRONG THUNDERSTORMS MOVING THROUGH SOUTHERN NEW JERSEY AT 530 PM EDT. THESE STORMS HAVE A HISTORY OF PRODUCING STRONG...GUSTY WINDS AND LOCALLY VERY HEAVY RAIN. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NpOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. GERAPETRITIS/CRUPI
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, Oct 21, 4:46 PM EDT, 1 hour 11 minutes before
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
Special weather statement, Oct 21, 4:51 PM EDT, 1 hour 6 minutes before
PAZ067>071-NJZ015>026-212300- SPECIAL WEATHER STATEMENT - THUNDERSTORMS NATIONAL WEATHER SERVICE PHILADELPHIA PA 450 PM EDT THU OCT 21 1993 ...THUNDERSTORMS BEARING DOWN ON VETERANS STADIUM... AT 445 PM EDT...WEATHER SERVICE RADAR SHOWED A LINE OF SHOWERS AND THUNDERSTORMS MOVING ACROSS EASTERN PENNSYLVANIA. THESE THUNDERSTORMS WILL BE IN THE VETERANS STADIUM AREA AROUND 5 PM. THE HEAVIEST RAINS WILL OCCUR UNTIL ABOUT 545 PM...HOWEVER ADDITIONAL SHOWERS MAY PERSIST UNTIL ABOUT 7 PM. THIS RAIN AREA IS MOVING TOWARD THE EAST NORTHEAST AT AROUND 30 MILES AN HOUR. SO FAR...STRONGEST WINDS WITH THESE THUNDERSTORMS HAVE BEEN ABOUT 40 MILES AN HOUR. IF YOU ARE OUT AND ABOUT...BE AWARE OFH RAPIDLY APPROACHING THUNDERSTORMS. BE ALERT TO DEBRIS BLOWING IN THE AIR. IF POSSIBLE...SEEK SHELTER INDOORS UNTIL THE STORMS PASS. JWH
Special weather statement, Oct 21, 4:51 PM EDT, 1 hour 6 minutes before
DEZ001-002-003-004-212345- SPECIAL WEATHER STATEMENT...CORR FOR SPELLING NATIONAL WEATHER SERVICE WILMINGTON DE 445 PM EDT THU OCT 21 1993 ...SHOWERS AND THUDERSTORMS MOVING INTO DELAWARE... AT 433 PM EDT THIS AFTERNOON WEATHER SERVICE RADAR SHOWED A LINE OF SHOWERS AND THUNDERSTORMS MOVING THROUGH DELAWARE. THE LINE OF SHOWERS AND THUNDERSTORMS WAS MOVING TO THE EAST AT 25 MPH...WHILE THE INDIVIDUAL SHOWERS WERE MOVING NORTHEAST AT 45 MPH. THESE SHOWERS AND POSSIBLE THUNDERSTORMS STRETCHED FROM NEW CASTLE COUNTY SOUTHWEST INTO KENT AND QUEEN ANNES COUNTIES ON THE MARYLAND EASTERN SHORE. A COUPLE OF SHOWERS HAVE POPPED UP AHEAD OF THE MAIN LINE OF SHOWERS AND THUNDERSTORMS IN WESTERN KENT COUNTY. THE LINE OF SHOWERS AN THUNDERSTORM WILL BE MOVING INTO KENT AND SUSSEX COUNTIES WITHIN THE NEXT 1 TO 2 HOURS. THESE SHOWERS AND POSSIBLE THUNDERSTORMS WILL PRODUCE BRIEF HEAVY RAIN AND GUSTY WINDS. AT THE NEW CASTLE COUNTY AIRP4ORT THE WINDS SHIFTED TO THE NORTHWEST AND GUSTED TO 40 MPH AS THE TEMPERATURE DROPPED 14 DEGREES IN LESS THAN 15 MINUTES WHEN THE FRONT PASSED THROUGH NORTHERN DELAWARE. VAUGHAN
Special weather statement, Oct 21, 5:25 PM EDT, 32 minutes before
PAZ048-054-055-058-060-061-062-212300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALLENTOWN PA 525 PM EDT THU OCT 21 1993 ...SHOWERS AND GUSTY WINDS MOVING THROUGH THE LEHIGH VALLEY AND THE POCONOS... SHOWERS AND THUNDERSTORMS MOVING ACROSS EASTERN PENNSYLVANIA INTO WESTERN AND NORTHERN NEW JERSEY ARE BRINGING GUSTY WINDS AND HEAVY DOWNPOURS. AT 515PM NATIONAL WEATHER SERVICE RADAR SHOWED A 110 MILE WIDE LINE OF SHOWERS AND THUNDERSTORMS ACROSS NORTHERN NEW JERSEY...EASTERN PENNSYLVANIA AS WELL AS MUCH OF NORTHERN DELAWARE...EASTERN MARYLAND AND THE WASHINGTON D.C. AREA. THE STRONGEST SHOWERS AND THUNDERSTORMS WERE LOCATED BETWEEN PHILADELPHIA AND WILMINGTON...DELAWARE. A BAND OF MODERATE RAIN SHOWERS EXTENDED FROM ALLENTOWN SOUTHWARD ACROSS EASTERN BERKS COUNTY TO CHESTER AND DELAWARE COUNTIES AND THROUGH EAST CENTRAL MARYLAND. THE SHOWERS AND THUNDERSTORMS ARE MOVING NORTHEAST AT 35 MILES PER HOUR. THE SHOWERS AND THUNDERSTORMS ARE DUE TO A STRONG COLD FRONT NOW MOVING THROUGH EASTERN PENNSYLVANIA. THIS COLD FRONT WILL MOVE QUICKLY THROUGH THE LEHIGH VALLEY AND THE POCONOS AND SHOULD BE EAST OF THE REGION WITHIN THE NEXT FEW HOURS. UNTIL THEN...SHOWERS SOME WHICH MAY HAVE LOCALLY HEAVY DOWNPOURS AND GUSTY WINDS TO NEAR 35 MILES PER HOUR ARE POSSIBLE...ESPECIALLY OVER HIGHER TERRAIN. MILLER
Special weather statement, Oct 21, 5:27 PM EDT, 30 minutes before
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
Special weather statement, Oct 21, 5:30 PM EDT, 27 minutes before
PAZ048-054-055-058-060-061-062-212300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALLENTOWN PA 525 PM EDT THU OCT 21 1993 ...SHOWERS AND GUSTY WINDS MOVING THROUGH THE LEHIGH VALLEY AND THE POCONOS... SHOWERS AND THUNDERSTORMS MOVING ACROSS EASTERN PENNSYLVANIA INTO WESTERN AND NORTHERN NEW JERSEY ARE BRINGING GUSTY WINDS AND HEAVY DOWNPOURS. AT 515PM NATIONAL WEATHER SERVICE RADAR SHOWED A 110 MILE WIDE LINE OF SHOWERS AND THUNDERSTORMS ACROSS NORTHERN NEW JERSEY...EASTERN PENNSYLVANIA AS WELL AS MUCH OF NORTHERN DELAWARE...EASTERN MARYLAND AND THE WASHINGTON D.C. AREA. THE STRONGEST SHOWERS AND THUNDERSTORMS WERE LOCATED BETWEEN PHILADELPHIA AND WILMINGTON...DELAWARE. A BAND OF MODERATE RAIN SHOWERS EXTENDED FROM ALLENTOWN SOUTHWARD ACROSS EASTERN BERKS COUNTY TO CHESTER AND DELAWARE COUNTIES AND THROUGH EAST CENTRAL MARYLAND. THE SHOWERS AND THUNDERSTORMS ARE MOVING NORTHEAST AT 35 MILES PER HOUR. THE SHOWERS AND THUNDERSTORMS ARE DUE TO A STRONG COLD FRONT NOW MOVING THROUGH EASTERN PENNSYLVANIA. THIS COLD FRONT WILL MOVE QUICKLY THROUGH THE LEHIGH VALLEY AND THE POCONOS AND SHOULD BE EAST OF THE REGION WITHIN THE NEXT FEW HOURS. UNTIL THEN...SHOWERS SOM E WHICH MAY HAVE LOCALLY HEAVY DOWNPOURS AND GUSTY WINDS TO NEAR 35 MILES PER HOUR ARE POSSIBLE...ESPECIALLY OVER HIGHER TERRAIN. MILLER
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.