Alert archive / New Jersey / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 8, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 6, 1991, 7:35 PM EDT for Ocean County, New Jersey. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- May 6, 1991, 7:35 PM EDT (23:35 UTC)
- Expired
- May 6, 1991, 8:30 PM EDT
- In force
- 55 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Ocean County, NJ
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 12:00Z, 11.6 hours before the alert went out and 51 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
- 574 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 224 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KACY 062337 SVRACY NJC029-070030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 735 PM EDT MON MAY 6 1991 THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 830 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH NEW JERSEY ...OCEAN COUNTY AND FOR THE ADJACENT COASTAL WATERS AT 730 PM NATIONAL WEATHER SERVICE RADAR IN ATLANTIC CITY HAS DETECTED SEVERE THUNDERSTORMS MOVING ACROSS ATLANTIC AND BURLINGTON COUNTIES OF SOUTHERN NEW JERSEY. THE THUNDERSTORMS EXTEND FROM JAMESBURG TO WHITING TO THE ATLANTIC CITY AIRPORT. THESE THUNDERSTORMS HAVE A HISTORY OF PRODUCING LARGE HAIL AND WIND GUSTS UP TO 75 MILES AN HOUR. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 50 MILES AN HOUR. 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. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. SCURA/DIETZMANN
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, May 6, 6:52 PM EDT, 43 minutes before
DEZ003-002-001-070045-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON DE
641 PM EDT MON MAY 6 1991
...THUNDERSTORMS MOVING THROUGH NORTHERN DELAWARE...AND HEADING FOR
CENTRAL AND SOUTHERN DELAWARE WITHIN THE HOUR...
A STRONG THUNDERSTORM MOVED THROUGH NORTHERN DELAWARE DURING THE PAST
HALF HOUR PRODUCING WIND GUSTS OF 40 TO 50 MPH IN CHRISTIANA DELAWARE...
AROUND 5 MILES WEST OF THE NEW CASTLE COUNTY AIRPORT. THIS WAS REPORTED
BY A HAM RADIO OPERATOR. AT THE AIRPORT WIND GUSTS WERE ESTIMATED AT 48 MPH
AND 3/8 INCH HAIL WAS REPORTED. SKYWARN OBSERVERS REPORTED A WALL CLOUD
NEAR THE DELAWARE RIVER IN CHESTER COUNTY AND SOME TREE DAMAGE IN
CLAYMONT IN NORTHEAST WILMINGTON...WHERE WINDS WERE ESTIMATED BY THE
OBSERVER AT 40 MPH PLUS.
THIS THUNDERSTORM WAS PART OF A LINE OF THUNDERSTORMS STRETCHING
SOUTH OVER THE CHESAPEAKE BAY AND MOVING ONTO THE EASTERN SHORE OF MARYLAND.
THE STRONGEST THUNDERSTORMS WERE NEAR EASTON ON THE EASTERN SHORE.
THESE WILL MOVE INTO SOUTHERN KENT AND SUSSEX COUNTIES OF DELAWARE BY
8PM NO TORNADOES HAVE BEEN SIGHTED AS YET...BUT A TORNADO WATCH REMAINS IN
EFFECT UNTIL 10PM. REMEMBER SEVERE THUNDERSTORM CAN PRODUCE TORNADOES WITH
LIToTLE WARNING. BE PREPARED TO MOVE TO SAFETY IMMEDIATELY IF
THREATENING WEATHER APPROACHES.
CSSpecial weather statement, May 6, 7:08 PM EDT, 27 minutes before
PAZ007>012-016-NJZ002>004-006-062300-
SEVERE WEATHER STATEMENT -
NATIONAL WEATHER SERVICE PHILADELPHIA PA
705 PM EDT MON MAY 6 1991
...SEVERE THUNDERSTORM WATCH CANCELED FOR THE MIDDLE SUSQUEHANNA
VALLEY AND FOR THE UPPER SUSQUEHANNA VALLEY OF PENNSYLVANIA
EXCEPT FOR SUSQUEHANNA COUNTY...
SEVERE THUNDERSTORMS HAVE MOVED EAST OF THE ABOVE AREAS AND
NO FURTHER SEVERE WEATHER IS EXPECTED.
SPSpecial weather statement, May 6, 7:09 PM EDT, 26 minutes before
PAZ007>012-016-NJZ002>004-006-062300-
SPECIAL WEATHER STATEMENT - CORRECTION
NATIONAL WEATHER SERVICE PHILADELPHIA PA
705 PM EDT MON MAY 6 1991
...SEVERE THUNDERSTORM WATCH CANCELED FOR THE MIDDLE SUSQUEHANNA
VALLEY AND FOR THE UPPER SUSQUEHANNA VALLEY OF PENNSYLVANIA
EXCEPT FOR SUSQUEHANNA COUNTY...
SEVERE THUNDERSTORMS HAVE MOVED EAST OF THE ABOVE AREAS AND
NO FURTHER SEVERE WEATHER IS EXPECTED.
SPSpecial weather statement, May 6, 7:10 PM EDT, 25 minutes before
PAZ007>012-016-NJZ002>004-006-070001-
SPECIAL WEATHER STATEMENT - CORRECTION
NATIONAL WEATHER SERVICE PHILADELPHIA PA
705 PM EDT MON MAY 6 1991
...SEVERE THUNDERSTORM WATCH CANCELED FOR THE MIDDLE SUSQUEHANNA
VALLEY AND FOR THE UPPER SUSQUEHANNA VALLEY OF PENNSYLVANIA
EXCEPT FOR SUSQUEHANNA COUNTY...
SEVERE THUNDERSTORMS HAVE MOVED EAST OF THE ABOVE AREAS AND
NO FURTHER SEVERE WEATHER IS EXPECTED.
SPSpecial weather statement, May 6, 7:17 PM EDT, 18 minutes before
PAZ011-016-070000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALLENTOWN PA 715 PM EDT MON MAY 6 1991 ...TORNADO WATCH IN EFFECT UNTIL 10 PM EDT FOR BERKS COUNTY... ...SEVERE THUNDERSTORM WATCH UNTIL 10 PM EDT FOR PARTS OF EASTERN PENNSYLVANIA... THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR BERKS COUNTY UNTIL 10 PM. THE SEVERE THUNDERSTORM WATCH FOR SCHUYLKILL... BERKS AND CARBON COUNTIES HAS BEEN CANCELLED. A SEVERE THUNDERSTORM WATCH CONTINUES FOR PIKE...MONR0E AND NORTHAMPTON COUNTIES. AT 715 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF HEAVY THUNDERSTORMS EXTENDING FROM PIKE COUNTY SOUTH ALONG THE DELAWARE RIVER TO SOUTHWEST NEW JERSEY. THE LINE IS MOVING EAST AT 40 TO 45 MPH. AS A RESULT...THE SEVERE THUNDERSTORM WATCH FOR SCHUYLKILL...CARBON AND BERKS COUNTIES HAS BEEN CANCELLED. PEOPLE LIVING IN PIKE...MONROE AND NORTHAMPTON COUNTIES SHOULD REMAIN NEAR SHELTER UNTIL 745 PM. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO AND TELEVISION STATIONS FOR THE LATEST INFORMATION ON THIS WEATHER SITUATION. DOVICO
Special weather statement, May 6, 7:21 PM EDT, 14 minutes before
PAZ011-016-070000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALLENTOWN PA 715 PM EDT MON MAY 6 1991 ...TORNADO WATCH IN EFFECT UNTIL 10 PM EDT FOR BERKS COUNTY... ...SEVERE THUNDERSTORM WATCH UNTIL 10 PM EDT FOR PARTS OF EASTERN PENNSYLVANIA... THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR BERKS COUNTY UNTIL 10 PM. THE SEVERE THUNDERSTORM WATCH FOR SCHUYLKILL... BERKS...CARBON AND LEHIGH COUNTIES HAS BEEN CANCELLED. A SEVERE THUNDERSTORM WATCH CONTINUES FOR PIKE...MONR0E AND NORTHAMPTON COUNTIES. AT 715 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF HEAVY THUNDERSTORMS EXTENDING FROM PIKE COUNTY SOUTH ALONG THE DELAWARE RIVER TO SOUTHWEST NEW JERSEY. THE LINE IS MOVING EAST AT 40 TO 45 MPH. AS A RESULT...THE SEVERE THUNDERSTORM WATCH FOR SCHUYLKILL...CARBON AND BERKS COUNTIES HAS BEEN CANCELLED. PEOPLE LIVING IN PIKE...MONROE AND NORTHAMPTON COUNTIES SHOULD REMAIN NEAR SHELTER UNTIL 745 PM. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO AND TELEVISION STATIONS FOR THE LATEST INFORMATION ON THIS WEATHER SITUATION. DOVICO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 6:38 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester | 37 min |
| May 6, 6:59 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Cumberland | 61 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 1991Every severe thunderstorm warning in 1991
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.