Alert archive / New Jersey / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 42, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Nov 28, 1993, 8:14 AM EST for Atlantic County, Burlington County, Cape May County, New Jersey. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Nov 28, 1993, 8:14 AM EST (13:14 UTC)
- Expired
- Nov 28, 1993, 9:15 AM EST
- In force
- 61 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Atlantic County, NJ, Burlington County, NJ, Cape May County, NJ
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 12:00Z, 1.2 hours before the alert went out and 19 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 539 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 620 m²/s²
- 0-3 km storm-relative helicity
- 974 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KACY 281316 RRA SVRACY NJC001-005-009-281415- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 814 AM EST SUN NOV 28 1993 THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 AM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH NEW JERSEY ...ATLANTIC COUNTY...EASTERN BURLINGTON COUNTY...CAPE MAY COUNTY AND THE ADJACENT COASTAL WATERS AT 805 AM...WEATHER SERVICE RADAR WAS DETECTING A LINE OF SEVERE THUNDERSTORMS STRETCHING FROM BURLINGTON TO EASTERN CUMBERLAND COUNTY. THE LINE OF STORMS WAS MOVING EAST AT 30 MILES AN HOUR AND WERE ACCOMPANIED BY VERY STRONG GUSTY WINDS...INTENSE DOWNPOURS...AND POSSIBLE HAIL. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. HG/FD
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, Nov 28, 4:55 AM EST, 3 hours 19 minutes before
NJZ019>026-501-DEZ501-281600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 450 AM EST SUN NOV 27 1993 ...MINOR TIDAL FLOODING THIS MORNING... ...GALE WARNING AND HEAVY SURF ADVISORY ALONG THE COAST... SYNOPSIS... LOW PRESSURE HAS MOVED INTO CENTRAL VIRGINIA AND HIGH PRESSURE OVER THE GULF OF MAINE. THE PRESSURE GRADIENT BETWEEN THESE SYSTEMS IS CAUSING STRONG SOUTHEAST WINDS. THE LOW PRESSURE WILL BE MOVING NORTH ALONG THE APPALACHIANS INTO EASTERN NEW YORK STATE THIS AFTERNOON. TIDE INFORMATION... HIGH TIDE OCCURS AT 624 AM THIS MORNING ALONG THE OCEAN FRONT AND 1 TO 2 HOURS LATER IN THE BACK BAYS. TIDES ARE APPROACHING 2 FEET ABOVE NORMAL AND ARE EXPECTED TO CONTINUE THROUGH HIGH TIDE. THIS WILL PRODUCE HEIGHTS NEAR 7 FEET ABOVE MEAN LOW WATER ON THE OCEAN FRONT AND FROM 1/2 TO NEAR 1 FOOT HIGHER IN SOME BACK BAYS. MANY ACCESS ROADS BEGIN TO BECOME WATER COVERED AS TIDES APPROACH THE 7 FOOT MARK. ANYONE TRAVELING TO AND FROM SHORE COMMUNITIES THIS MORNING SHOULD ALLOW EXTRA TIME AND EXERCISE CAUTION. RAINFALL INFORMATION... HEAVY RAIN WITH POSSIBE ACCUMULATIONS OF 1 TO 2 INCHES IS EXPECTED THIS MORNING INTO THE EARLY AFTERNOON. THIS MAY CAUSE SOME URBAN FLOODING IN NORMALLY POOR DRAINAGE AREAS. ALSO...PONDING OF WATER ON HIGHWAYS MAY POSE A DRIVING HAZARD. THUNDERSTORMS ARE POSSIBLE TODAY BUT THE PRECIPITATION SHOULD TAPER OFF BY LATE AFTERNOON. SURF INFORMATION... GALE FORCE ONSHORE WINDS AND HEAVY SURF WILL CAUSE SOME BEACH EROSION TODAY AND ALSO PUSH EXTRA WATER ON TOP OF TIDAL FLOODING WATERS...ESPECIALLY IN THE IMMEDIATE BEACH BLOCKS. PLEASE STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO AND TV STATIONS FOR LATER U"PDATES OR POSSIBLE WARNINGS. FXD
Special weather statement, Nov 28, 5:06 AM EST, 3 hours 8 minutes before
DEZ001-002-003-004-281215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON DE 506 AM EST SUN NOV 28 1993 ...A TORNADO WATCH CONTINUES FOR DELAWARE... A TORNADO WATCH IS IN EFFECT FOR DELAWARE UNTIL 700 AM. A STRONG COLD FRONT ALONG WITH HIGH WINDS OVER THE MID ATLANTIC REGION ARE PROVIDING THE NECESSARY INGREDIENTS FOR THE POSSIBLE FORMATION OF TORNADOES. REMEMBER THAT A TORNADO WATCH MEANS THAT THE CONDITIONS ARE FAVORABLE FOR TORNADOES AND/OR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. A LINE OF HEAVY RAIN AND POSSIBLE THUNDERSTORMS EXTENDS FROM NORTH OF WILMINGTON TO PATUXENT RIVER MARYLAND AND INTO SOUTH CENTRAL VIRGINIA. THE AREA OF STORMS IS MOVING NORTHEAST AT ABOUT 30 MPH WHILE INDIVIDUAL CELLS ARE MOVING NORTH AT 45 MPH. BE ALERT TO THE POSSIBILITY OF RAPIDLY CHANGING WEATHER CONDITIONS. HEAVY RAIN CAUSES FLOODING IN POOR DRAINAGE AREAS AND MAKES DRIVING HAZARDOUS. WITH ANY THUNDERSTORM...LIGHTNING IS A HAZARD. IF THREATENING WEATHER APPROACHES...GET TO A PLACE OF SAFETY IMMEDIATELY. AN INTERIOR ROOM OR BASEMENT OFFERS THE BEST PROTECTION. LISTEN TO NOAA WEATHER RADIO OR OTHER LOCAL MEDIA FOR LATER STATEMENTS AND UPDATES. ROETS
Special weather statement, Nov 28, 5:09 AM EST, 3 hours 5 minutes before
DEZ001-002-003-004-281215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON DE 506 AM EST SUN NOV 28 1993 ...A TORNADO WATCH CONTINUES FOR DELAWARE... A TORNADO WATCH IS IN EFFECT FOR DELAWARE UNTIL 700 AM. A STRONG COLD FRONT ALONG WITH HIGH WINDS OVER THE MID ATLANTIC REGION ARE PROVIDING THE NECESSARY INGREDIENTS FOR THE POSSIBLE FORMATION OF TORNADOES. REMEMBER THAT A TORNADO WATCH MEANS THAT THE CONDITIONS ARE FAVORABLE FOR TORNADOES AND/OR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. A LINE OF HEAVY RAIN AND POSSIBLE THUNDERSTORMS EXTENDS FROM NORTH OF WILMINGTON TO PATUXENT RIVER MARYLAND AND INTO SOUTH CENTRAL VIRGINIA. THE AREA OF STORMS IS MOVING NORTHEAST AT ABOUT 30 MPH WHILE INDIVIDUAL CELLS ARE MOVING NORTH AT 45 MPH. BE ALERT TO THE POSSIBILITY OF RAPIDLY CHANGING WEATHER CONDITIONS. HEAVY RAIN CAUSES FLOODING IN POOR DRAINAGE AREAS AND MAKES DRIVING HAZARDOUS. WITH ANY THUNDERSTORM...LIGHTNING IS A HAZARD. IF THREATENING WEATHER APPROACHES...GET TO A PLACE OF SAFETY IMMEDIATELY. AN INTERIOR ROOM OR BASEMENT OFFERS THE BEST PROTECTION. LISTEN TO NOAA WEATHER RADIO OR OTHER LOCAL MEDIA FOR LATER STATEMENTS AND UPDATES. ROETS
Special weather statement, Nov 28, 5:39 AM EST, 2 hours 35 minutes before
PAZ037>071-NJZ015>026-281500- SPECIAL WEATHER STATEMENT - RAIN AND THUNDERSTORMS NATIONAL WEATHER SERVICE PHILADELPHIA PA 530 AM EST SUN NOV 28 1993 ...SMALL STREAM FLOOD WATCH OVER SOUTHEAST PENNSYLVANIA EXCEPT PHILADELPHIA COUNTY THIS MORNING... ...RAIN...WITH THE CHANCE OF THUNDERSTORMS TO AFFECT THE DELAWARE VALLEY THIS MORNING... AREAS OF HEAVY RAIN FELL OVER THE SUSQUEHANNA VALLEY WITH AMOUNTS IN EXCESS OF 4 INCHES OVER THE CENTRE COUNTY. OVER THE DELAWARE VALLEY RAINFALL AMOUNTS HAVE BEEN BELOW 2 INCHES WITH PERHAPS ONE HALF TO THREE QUARTERS INCH OF ADDITIONAL RAIN IS POSSIBLE...IN A BRIEF TIME PERIOD. SMALLER CREEKS WEST OF PHILADELPHIA COULD RISE RAPIDLY AND SO A SMALL STREAM FLOOD WATCH IS IN EFFECT FOR MONTGOMERY...BUCKS...CHESTER AND DELAWARE COUNTIES THIS MORNING. THE THREAT OF THUNDERSTORMS ALSO EXIST AND STRONG GUSTY WINDS MAY ACCOMPANY THESE STORMS. ALTHOUGH MOST STREAMS SHOULD REMAIN WITHIN THEIR BANKS HOWEVER... PONDING AND STANDING WATER CAN BE EXPECTED ON THE ROADWAYS. THE PRECIPITATION WILL END FROM WEST TO EAST BY EARLY SUNDAY AFTERNOON. MR
Special weather statement, Nov 28, 8:00 AM EST, 14 minutes before
NJZ019>026-501-DEZ501-051700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 800 AM EST SUN NOV 28 1993 ...MINOR TIDAL FLOODING DURING HIGH TIDE THIS MORNING... A LOW PRESSURE CENTER OVER NORTHERN VIRGINIA THIS MORNING IS BRINGING SOUTHEASTLERLY WINDS TO THE FORECAST AREA. THIS ALONG WITH THE ELEVATED SEA LEVELS DUE TO THE LOW PRESSURE WILL CAUSE SOME MINOR TIDAL FLOODING ALONG THE OCEAN FRONT AND POSSIBLY THE BACK BAYS DURING THE TIME OF HIGH TIDE THIS MORNING. AT 8 AM THIS MORNING...TIDES WERE RUNNING 1 1/2 TO 2 FEET ABOVE NORMAL. HIGH TIDE OCCURS AT 1124 AM THIS MORNING AND TIDE HEIGHTS ARE EXPECTED TO REMAIN 1 1/2 TO 2 FEET ABOVE NORMAL BRINGING TIDE HEIGHTS OF 6 TO 6 1/2 FEET ABOVE MEAN LOW WATER TO THE OCEAN FRONT AND SLIGHTLY HIGHER TIDES IN THE BACK BAYS. IN ADDITION...FAIRLY DENSE FOG HAS SETTLED OVER THE AREA AND FURTHER INCREASES THE DRIVING HAZARD THIS MORNING. PLEASE USE EXTREME CAUTION IF TRAVELLING THIS MORNING...ESPECIALLY TO THE BARRIER ISLANDS... AND DO ATTEMPT TO DRIVE THROUGH ANY ROADWAYS WHICH HAVE BECOME COVERED WITH WATER. GERAPETRITIS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 28, 7:35 AM EST | Severe Thunderstorm Warning | PHI | Salem | 30 min |
| Nov 28, 7:50 AM EST | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 45 min |
| Nov 28, 8:10 AM EST | Severe Thunderstorm Warning | PHI | Burlington | 35 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.