Alert archive / New Jersey / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 30, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 13, 1993, 4:45 PM EDT for Atlantic County, New Jersey. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Aug 13, 1993, 4:45 PM EDT (20:45 UTC)
- Expired
- Aug 13, 1993, 5:45 PM EDT
- In force
- 60 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, 8.8 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
- 1213 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 780 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS1 KACY 132045 RRA SVRACY NJC001-132145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 445 PM EDT FRI AUG 13 1993 THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH NEW JERSEY ...ATLANTIC COUNTY AND THE ADJACENT COASTAL WATERS AT 445 PM...WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM NEAR EGG HARBOR CITY. THIS STORM HAS A HISTORY OF PRODUCING STRONG GUSTY WINDS AND MARBLE SIZED HAIL. MOVEMENT WAS SOUTH AT 15 MILES AN HOUR. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS. HAYES
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 13, 1:39 PM EDT, 3 hours 6 minutes before
DEZ001-131845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON DE 139 PM EDT FRI AUG 13 1993 ...THUNDERSTORMS RAPIDLY DEVELOPING ALONG THE SOUTHERN DELAWARE... ...AND MARYLAND EASTERN SHORE COASTLINES... AT 135 PM EDT THIS AFTERNOON...NATIONAL WEATHER SERVICE RADAR SHOWED SEVERAL THUNDERSTORM CELLS GROWING RAPIDLY ALONG THE SOUTHEAST DELAWARE SHORE AND THE MARYLAND EASTERN SHORE. ONE CELL WAS LOCATED JUST EAST OF SELBYVILLE DELAWARE AND THE OTHER WAS LOCATED JUST SOUTHEAST OF SALISBURY MARYLAND. ANOTHER CELL WAS JUST DEVELOPING SOUTH OF GEORGETOWN DELAWARE ALONG THE MARYLAND AND DELAWARE BORDER. MOVEMENT OF THESE STORMS APPEARS TO BE TOWARD THE NORTHEAST AT AROUND 15 MPH. PERSONS ON THE BEACH AND OUTDOORS FROM INDIAN RIVER INLET SOUTHWARD DOWN TO THE MARYLAND BORDER SHOULD HEAD FOR SAFE SHELTER INDOORS IMMEDIATELY. LIGHTNING DETECTION SYSTEMS HAVE SHOWN AN INCREASE IN CLOUD TO GROUND LIGHTNING STRIKES OVER THE LAST 20 MINUTES. STAY AWAY FROM APPLIANCES...TELEPHONE AND PLUMBING UNTIL THE STORMS HAVE PASSED. IF YOU ARE ON THE BEACH OR IN AN OPEN FIELD...LEAVE THE AREA IMMEDIATELY. LIGHTNING CAN STRIKE WELL AHEAD OF THE STORM. DUE TO THE SLOW MOVEMENT OF THESE STORMS...VERY HEAVY DOWNPOURS ARE LIKELY CAUSING PONDING OF WATER AND STREET FLOODING. BRIEF GUSTY WINDS ARE ALSO LIKELY AS THE STORMS PASS OVER YOUR AREA. LOMBARDY
Special weather statement, Aug 13, 1:39 PM EDT, 3 hours 6 minutes before
DEZ001-131845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON DE 139 PM EDT FRI AUG 13 1993 ...THUNDERSTORMS RAPIDLY DEVELOPING ALONG THE SOUTHERN DELAWARE... ...AND MARYLAND EASTERN SHORE COASTLINES... AT 135 PM EDT THIS AFTERNOON...NATIONAL WEATHER SERVICE RADAR SHOWED SEVERAL THUNDERSTORM CELLS GROWING RAPIDLY ALONG THE SOUTHEAST DELAWARE SHORE AND THE MARYLAND EASTERN SHORE. ONE CELL WAS LOCATED JUST EAST OF SELBYVILLE DELAWARE AND THE OTHER WAS LOCATED JUST SOUTHEAST OF SALISBURY MARYLAND. ANOTHER CELL WAS JUST DEVELOPING SOUTH OF GEORGETOWN DELAWARE ALONG THE MARYLAND AND DELAWARE BORDER. MOVEMENT OF THESE STORMS APPEARS TO BE TOWARD THE NORTHEAST AT AROUND 15 MPH. PERSONS ON THE BEACH AND OUTDOORS FROM INDIAN RIVER INLET SOUTHWARD DOWN TO THE MARYLAND BORDER SHOULD HEAD FOR SAFE SHELTER INDOORS IMMEDIATELY. LIGHTNING DETECTION SYSTEMS HAVE SHOWN AN INCREASE IN CLOUD TO GROUND LIGHTNING STRIKES OVER THE LAST 20 MINUTES. STAY AWAY FROM APPLIANCES...TELEPHONE AND PLUMBING UNTIL THE STORMS HAVE PASSED. IF YOU ARE ON THE BEACH OR IN AN OPEN FIELD...LEAVE THE AREA IMMEDIATELY. LIGHTNING CAN STRIKE WELL AHEAD OF THE STORM. DUE TO THE SLOW MOVEMENT OF THESE STORMS...VERY HEAVY DOWNPOURS ARE LIKELY CAUSING PONDING OF WATER AND STREET FLOODING. BRIEF GUSTY WINDS ARE ALSO LIKELY AS THE STORMS PASS OVER YOUR AREA. LOMBARDY
Special weather statement, Aug 13, 1:40 PM EDT, 3 hours 5 minutes before
DEZ001-131845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON DE 139 PM EDT FRI AUG 13 1993 ...THUNDERSTORMS RAPIDLY DEVELOPING ALONG THE SOUTHERN DELAWARE... ...AND MARYLAND EASTERN SHORE COASTLINES... AT 135 PM EDT THIS AFTERNOON...NATIONAL WEATHER SERVICE RADAR SHOWED SEVERAL THUNDERSTORM CELLS GROWING RAPIDLY ALONG THE SOUTHEAST DELAWARE SHORE AND THE MARYLAND EASTERN SHORE. ONE CELL WAS LOCATED JUST EAST OF SELBYVILLE DELAWARE AND THE OTHER WAS LOCATED JUST SOUTHEAST OF SALISBURY MARYLAND. ANOTHER CELL WAS JUST DEVELOPING SOUTH OF GEORGETOWN DELAWARE ALONG THE MARYLAND AND DELAWARE BORDER. MOVEMENT OF THESE STORMS APPEARS TO BE TOWARD THE NORTHEAST AT AROUND 15 MPH. PERSONS ON THE BEACH AND OUTDOORS FROM INDIAN RIVER INLET SOUTHWARD DOWN TO THE MARYLAND BORDER SHOULD HEAD FOR SAFE SHELTER INDOORS IMMEDIATELY. LIGHTNING DETECTION SYSTEMS HAVE SHOWN AN INCREASE IN CLOUD TO GROUND LIGHTNING STRIKES OVER THE LAST 20 MINUTES. STAY AWAY FROM APPLIANCES...TELEPHONE AND PLUMBING UNTIL THE STORMS HAVE PASSED. IF YOU ARE ON THE BEACH OR IN AN OPEN FIELD...LEAVE THE AREA IMMEDIATELY. LIGHTNING CAN STRIKE WELL AHEAD OF THE STORM. DUE TO THE SLOW MOVEMENT OF THESE STORMS...VERY HEAVY DOWNPOURS ARE LIKELY CAUSING PONDING OF WATER AND STREET FLOODING. BRIEF GUSTY WINDS ARE ALSO LIKELY AS THE STORMS PASS OVER YOUR AREA. LOMBARDY
Special weather statement, Aug 13, 2:09 PM EDT, 2 hours 36 minutes before
PAZ012-NJZ002-004-132000- SPECIAL WEATHER STATEMENT - ISOLATED STORM IN MERCER COUNTY NATIONAL WEATHER SERVICE PHILADELPHIA PA 210 PM EDT FRI AUG 13 1993 ...ISOLATED THUNDERSTORMS IN NORTHEAST MERCER COUNTY... A SMALL AREA OF SHOWERS AND HEAVY THUNDERSTORMS EXTEND OVER EXTREME SOUTHEAST MERCER AND MONMOUTH COUNTIES IN NEW JERSEY. THESE STORMS ARE MOVING SOUTH AT 10 MILES AN HOUR. WITH SUCH A SLOW MOVING STORM RAINFALL AMOUNTS OF AN INCH OR MORXE IN LESS THAN AN HOUR ARE POSSIBLE. THESE STORMS WILL BE MOVING SLOWLY INTO NORTHERN BURLINGTON COUNTY OVER THE NEXT HOUR. JONES
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.