Alert archive / New Jersey / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 12, NWS Philadelphia/Mount Holly

May 27, 1989Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 27, 1989, 11:52 AM EDT for Cape May County, New Jersey. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
May 27, 1989, 11:52 AM EDT (15:52 UTC)
Expired
May 27, 1989, 1:00 PM EDT
In force
68 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Cape May County, NJ

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 3.9 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.

Skew-T log-pSkew-T log-p diagram, Atlantic City In, NJ at 12:00Z on 1989-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 405 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Atlantic City In, NJ at 12:00Z on 1989-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
405 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1016 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KACY 271553
SVRACY
NJC009-271700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
1152 AM EDT SAT MAY 27 1989
 
THE NATIONAL WEATHER SERVICE IN ATLANTIC CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  100 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH NEW JERSEY
          ...CAPE MAY
 
SEVERAL VERY STRONG TUNDERSTORMS WERE LOCATED OVER EASTERN CUMBERLAND
COUNTY AT 1145 AM EDT. THESE STORMS ARE MOVING EAST AT 35 MPH AND
WILL PASS OVER CAPE MAY COUNTY DURING THE NEXT HOUR.
 
THESE THUNDERSTORMS WILL BE BRIEF BUT VERY STRONG...PERSONS SHOULD
TAKE SOME SORT OF SHELTER NOW.
 
 
 
 
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.

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 27, 10:37 AM EDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHILADELPHIA, PA
1033 AM EDT SAT MAY 27 1989

...THUNDERSTORMS MOVING THROUGH PHILADELPHIA...

AT 1030 AM...HEAVY THUNDERSTORMS WERE MOVING THROUGH THE PHILADELPHIA
METROPOLITAN AREA. THESE THUNDERSTORMS CONTAINED VERY HEAVY RAIN AND
GUSTY WINDS. AS THESE THUNDERSTORMS MOVE THROUGH FLOODING IS LIKELY
IN AREAS OF POOR DRAINAGE AND WIND GUSTS OF 25 TO 45 MPH ARE POSSIBLE.

THE THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MPH AND WILL MOVE
INTO SOUTHERN NEW JERSEY BY 1130 AM. ADDITIONAL SHOWERS AND SCATTERED
THUNDERSTORMS EXTENDED SOUTHWEST INTO MARYLAND AND WILL CONTINUE
TO SPREAD THROUGH THE PHILADELPHIA METROPOLITAN AREA INTO EARLY THIS
AFTERNOON.

RNS
Special weather statement, May 27, 11:22 AM EDT, 30 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
1115 AM EDT SAT MAY 27 1989

...STRONG THUNDERSTORMS MOVING THROUGH NEW JERSEY...

WINDS HAVE REACHED 48MPH 8 MILES SOUTHWEST OF MILLVILLE AIRPORT
IN CUMBERLAND COUNTY SOUTH JERSEY. THESE AND OTHER STRONG STORMS
WERE LINED UP FROM JUST SOUTH OF NEW YORK HARBOR THROUGH MCGUIRE
AFB AND ACROSS THE DELAWARE BAY TO DOVER DELAWARE. THE REPORTS
OF LIGHTNING ARE MORE FREQUENT THIS HOUR.

THERE HAVE BEEN REPORTS OF HAIL...VERY HEAVY RAIN WHICH HAS CAUSED
STREET FLOODING IN NEW JERSEY THIS HOUR. THESE THUNDERTORMS WILL
CLEAR THE COAST IN ABOUT AN HOUR OR HOUR AND A HALF.

PERSONS IN THIS AREA SHOULD DELAY MEMORIAL$ DAY WEEKEND ACTIVITIES
UNTIL THE THUNDERSTORMS PASS.
EBERWINE

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 27, 11:33 AM EDTSevere Thunderstorm WarningPHIAtlantic57 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1989Every severe thunderstorm warning in 1989

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.