Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 152, NWS New Orleans, LA

May 24, 1997Saint Charles Parish, Saint John the Baptist Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at May 24, 1997, 2:03 PM CDT for Saint Charles Parish, Saint John the Baptist Parish, Louisiana. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 24, 1997, 2:03 PM CDT (19:03 UTC)
Expired
May 24, 1997, 3:00 PM CDT
In force
57 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Saint Charles Parish, LA, Saint John the Baptist Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.1 hours before the alert went out and 73 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, Slidell Radar S, LA at 12:00Z on 1997-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1329 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, Slidell Radar S, LA at 12:00Z on 1997-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939Sfc1 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
1329 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
574 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

572 
WUUS1 KNEW 241906 RRA
SVRNEW
LAC089-093-095-LAZ501-242000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
203 PM CDT SAT MAY 24 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  300 PM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST LOUISIANA
 
   ...ST. CHARLES PARISH...ST. JAMES PARISH
   ...ST. JOHN BAPTIST PARISH
 
  AND FOR MARINE INTERESTS FROM...
 
   ...LAKE MAUREPAS  TO  WESTERN LAKE PONTCHARTRAIN
 
AT 2 PM CDT RADAR SHOWED A LINE OF NUMEROUS THUNDERSTORMS EXTENDING FROM
GRAMERCY TO DES ALLEMANDS. THE THUNDERSTORMS ARE MOVING NORTHEAST ABOUT
30 MILES AN HOUR.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

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 24, 12:00 PM CDT, 2 hours 3 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-240100-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
1200 PM CDT SAT MAY 24 1997

A MOIST UNSTABLE AIRMASS CONTINUES ACROSS SOUTHEAST LOUISIANA..
SOUTHWEST AND COASTAL MISSISSIPPI TODAY. THIS COMBINED WITH AN UPPER
LEVEL DISTURBANCE APPROACHING FROM THE WEST WILL RESULT IN SCATTERED
TO NUMEROUS THUNDERSTORMS ACROSS THE AREA. NUMEROUS THUNDERSTORMS
ARE CURRENTLY ONGOING WEST OF THE MISSISSIPPI RIVER NEAR BATON ROUGE.
THUNDERSTORMS SHOULD BEGIN TO DEVELOP ACROSS THE REMAINDER OF SOUTHEAST
LOUISIANA..INCLUDING SLIDELL AND THE METROPOLITAN NEW ORLEANS AREA..
AND COASTAL MISSISSIPPI BY EARLY AFTERNOON. DEEP TROPICAL MOISTURE
OVER THE REGION COMBINED WITH THE SLOW MOVEMENT OF THE THUNDERSTORMS
WILL PRODUCE VERY HEAVY RAINFALL IN SOME LOCATIONS. TWO TO THREE
INCH RAINFALL AMOUNTS IN ONE HOUR ARE POSSIBLE WITH SOME STORMS.

A FEW SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS SOUTHEAST LOUISIANA
SOUTHWEST AND COASTAL MISSISSIPPI..MAINLY EAST OF BATON ROUGE THIS
AFTERNOON INTO THIS EVENING AS THE UPPER LEVEL DISTURBANCE APPROACHES
THE REGION.
Special weather statement, May 24, 12:21 PM CDT, 1 hour 42 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-240100-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
1200 PM CDT SAT MAY 24 1997

A MOIST UNSTABLE AIRMASS CONTINUES ACROSS SOUTHEAST LOUISIANA..
SOUTHWEST AND COASTAL MISSISSIPPI TODAY. THIS COMBINED WITH AN UPPER
LEVEL DISTURBANCE APPROACHING FROM THE WEST WILL RESULT IN SCATTERED
TO NUMEROUS THUNDERSTORMS ACROSS THE AREA. NUMEROUS THUNDERSTORMS
ARE CURRENTLY ONGOING WEST OF THE MISSISSIPPI RIVER NEAR BATON ROUGE.
THUNDERSTORMS SHOULD BEGIN TO DEVELOP ACROSS THE REMAINDER OF SOUTHEAST
LOUISIANA..INCLUDING SLIDELL AND THE METROPOLITAN NEW ORLEANS AREA..
AND COASTAL MISSISSIPPI BY EARLY AFTERNOON. DEEP TROPICAL MOISTURE
OVER THE REGION COMBINED WITH THE SLOW MOVEMENT OF THE THUNDERSTORMS
WILL PRODUCE VERY HEAVY RAINFALL IN SOME LOCATIONS. TWO TO THREE
INCH RAINFALL AMOUNTS IN ONE HOUR ARE POSSIBLE WITH SOME STORMS.

A FEW SEVERE THUNDERSTORMS ARE POSSIBLE A*CROSS SOUTHEAST LOUISIANA
SOUTHWEST AND COASTAL MISSISSIPPI..MAINLY EAST OF BATON ROUGE THIS
AFTERNOON INTO THIS EVENING AS THE UPPER LEVEL DISTURBANCE APPROACHES
THE REGION.

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 24, 1:31 PM CDTSevere Thunderstorm WarningLIXLafourche29 min
May 24, 2:03 PM CDTSevere Thunderstorm WarningLIXSaint James57 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1997Every severe thunderstorm warning in 1997

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.