Alert archive / Louisiana / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 39, NWS New Orleans, LA

March 25, 1992Ascension Parish, Livingston Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 25, 1992, 10:23 AM CST for Ascension Parish, Livingston Parish, Louisiana. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Mar 25, 1992, 10:23 AM CST (16:23 UTC)
Expired
Mar 25, 1992, 11:00 AM CST
In force
37 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Ascension Parish, LA, Livingston Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 4.4 hours before the alert went out and 108 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 1992-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1992-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1266 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
393 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.

000 
TTAA00 KBTR 251627
SVRBTR
LAC005-063-251700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BATON ROUGE LA
1023 AM CST WED MAR 25 1992
 
THE NATIONAL WEATHER SERVICE IN BATON ROUGE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL LOUISIANA
 
   ...SOUTHEASTERN ASCENSION PARISH...SOUTHERN LIVINGSTON PARISH
 
A SEVERE THUNDERSTORM...PRODUCING LARGE HAIL AND DAMAGING WINDS WAS
LOCATED OVER FRENCH SETTLEMENT MOVING TO THE SOUTHEAST AT 25 MPH...
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR JPROTECTION 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.

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, Mar 25, 7:03 AM CST, 3 hours 20 minutes before
LAZ006-008-009-251500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BATON ROUGE LA
705 AM CST WED MAR 25 1992

...THUNDERSTORMS WITH HEAVY RAIN MOVING ACROSS PARTS OF EAST CENTRAL
LOUISIANA...

RADAR SHOWED SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...
FROM SOUTH OF ALEXANDRIA EXTENDING ACROSS PARTS OF AVOYELLES...
CATAHOULA AND CONCORDIA PARISHES.  THE STRONGEST THUNDERSTORMS WERE
SHOWN FROM NEAR VICK IN AVOYELLES PARISH TO FERRIDAY AND VIDALIA.
MOVEMENT WAS EAST AT 35 MPH.

PEOPLE IN THE AFFECTED PARISHES CAN EXPECT STRONG GUSTY WINDS...VERY
HEAVY RAIN WITH FLOODING OF STREETS AND OTHER LOW LYING AREAS...
DANGEROUS LIGHTNING AND POSSIBLY SOME SMALL HAIL FOR THE NEXT SEVERAL
HOURS.
Special weather statement, Mar 25, 9:20 AM CST, 1 hour 3 minutes before
LAZ010-013-014-251615-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
919 AM CST WED MAR 25 1992

AT 915 AM CST WEATHER SERVICE RADAR SHOWED A LINE OF NUMEROUS
THUNDERSTORMS EXTENDING FROM MCCOMB MISSISSIPPI TO BATON ROUGE.
THE LINE OF THUNDERSTORMS ARE MOVING SOUTHEAST ABOUT 25 MILES AN HOUR.

THESE THUNDERSTORMS PRODUCED NUMEROUS REPORTS OF GOLFBALL SIZE HAIL
IN WEST FELICIANA AND POINT COUPEE PARISHES EARLIER THIS MORNING.

RADAR CONTINUES SHOW MORE THUNDERSTORMS DEVELOPING JUST TO THE WEST OF
BATON ROUGE. IT IS LIKELY THAT SEVERE THUNDERSTORM WARNINGS MAY BE
NEEDED FOR TANGIPAHOA...WASHINGTON AND ST TAMMANY PARISHES WITHIN THE
NEXT ONE TO TWO HOURS.

A SEVERE rTHUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF SOUTHEAST
LOUISIANA UNTIL 1 PM CST THIS AFTERNOON.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 25, 7:39 AM CSTSevere Thunderstorm WarningLIXAvoyelles, Pointe Coupee, West Feliciana66 min
Mar 25, 8:22 AM CSTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana53 min
Mar 25, 8:48 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, West Baton Rouge57 min
Mar 25, 9:33 AM CSTSevere Thunderstorm WarningLIXAscension, Livingston57 min
Mar 25, 10:11 AM CSTSevere Thunderstorm WarningLIXSaint James, Saint John the Baptist64 min
Mar 25, 11:01 AM CSTSevere Thunderstorm WarningLIXJefferson, Orleans, Saint Charles59 min
Mar 25, 11:38 AM CSTSevere Thunderstorm WarningLIXOrleans, Plaquemines, Saint Bernard67 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1992Every severe thunderstorm warning in 1992

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.