Alert archive / Louisiana / Flash Flood Warnings in 1995

Flash Flood Warning 14, NWS New Orleans, LA

April 11, 1995Orleans Parish, Saint Bernard Parish, Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at Apr 11, 1995, 10:03 AM CDT for Orleans Parish, Saint Bernard Parish, Saint Tammany Parish, Louisiana. It was in force for 117 min.

The area

The counties it named.

The facts

Issued
Apr 11, 1995, 10:03 AM CDT (15:03 UTC)
Expired
Apr 11, 1995, 12:00 PM CDT
In force
117 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Orleans Parish, LA, Saint Bernard Parish, LA, Saint Tammany Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.1 hours before the alert went out and 24 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 1995-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 546 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 1995-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 300 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
546 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
561 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
300 m²/s²
0-3 km storm-relative helicity
454 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 111506
FFWNEW
LAC071-087-103-111700-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1003 AM CDT TUE APR 11 1995
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
FLASH FLOOD WARNING    EFFECTIVE UNTIL NOON CDT
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST LOUISIANA
 
   ...ORLEANS PARISH...ST.BERNARD PARISH...ST.TAMMANY PARISH
 
AT 10 AM WEATHER SERVICE RADAR SHOWED A LINE OF NUMEROUS THUNDERSTORMS
WITH HEAVY RAIN EXTENDING FROM THE MISSISSIPPI GULF COAST TO THE CITY OF
NEW ORLEANS. THE THUNDERSTORMS ARE MOVING EAST NORTHEAST AT 30 MILES AN
HOUR. THE THUNDERSTORMS SHOULD BE ENDING IN THE NEW ORLEANS
METROPOLITAN AREA BETWEEN 11 AM AND NOON CDT.
 
NEW ORLEANS CITY POLICE REPORTS WIDESPREAD STREET FLOODING. SOME
FLOODING HAS BEEN REPORTED ON INTERSTATE UNDERPASSES IN NEW ORLEANS AT
10 AM. SEVERAL CARS WERE SUBMERGED. JEFERSON PARISH SHERIFF'S OFFICE
SAID THERE WAS WIDESPREAD STREET FLOODING IN METAIRIE ALSO.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 7:30 PM CDTSevere Thunderstorm WarningLIXAscension, Saint James, Saint John the Baptist45 min
Apr 10, 7:30 PM CDTSevere Thunderstorm WarningLIXTangipahoa45 min
Apr 10, 8:07 PM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche, Saint Charles53 min
Apr 10, 8:24 PM CDTSevere Thunderstorm WarningLIXOrleans, Plaquemines, Saint Bernard51 min
Apr 10, 8:31 PM CDTSevere Thunderstorm WarningLIXSaint Tammany44 min
Apr 10, 10:05 PM CDTSevere Thunderstorm WarningLIXSaint Landry60 min
Apr 11, 12:45 AM CDTSevere Thunderstorm WarningLIXAvoyelles60 min
Apr 11, 2:09 AM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana66 min
Apr 11, 2:56 AM CDTTornado WarningLIXEast Feliciana, West Feliciana64 min
Apr 11, 4:01 AM CDTTornado WarningLIXEast Baton Rouge, East Feliciana, West Baton Rouge59 min
Apr 11, 4:16 AM CDTFlash Flood WarningLIXEast Baton Rouge, Pointe Coupee, West Baton Rouge4 hr
Apr 11, 4:24 AM CDTTornado WarningLIXLivingston, Saint Helena66 min
Apr 11, 4:25 AM CDTFlash Flood WarningLIXEast Feliciana4 hr
Apr 11, 4:25 AM CDTFlash Flood WarningLIXEast Baton Rouge, Pointe Coupee, West Baton Rouge4 hr
Apr 11, 4:46 AM CDTTornado WarningLIXTangipahoa59 min
Apr 11, 5:10 AM CDTSevere Thunderstorm WarningLIXWashington65 min
Apr 11, 5:10 AM CDTSevere Thunderstorm WarningLIXSaint Tammany65 min
Apr 11, 5:22 AM CDTFlash Flood WarningLIXEast Feliciana2 hr
Apr 11, 5:34 AM CDTSevere Thunderstorm WarningLIXLivingston, Tangipahoa56 min
Apr 11, 5:44 AM CDTFlash Flood WarningLIXLivingston, Saint Helena, Tangipahoa4 hr
Apr 11, 6:09 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa66 min
Apr 11, 6:31 AM CDTSevere Thunderstorm WarningLIXSaint Tammany59 min
Apr 11, 7:04 AM CDTFlash Flood WarningLIXAscension3 hr
Apr 11, 7:39 AM CDTFlash Flood WarningLIXAscension2 hr
Apr 11, 8:14 AM CDTFlash Flood WarningLIXSaint Tammany, Tangipahoa, Washington2 hr
Apr 11, 8:25 AM CDTFlash Flood WarningLIXEast Feliciana, Pointe Coupee, West Baton Rouge4 hr
Apr 11, 8:25 AM CDTFlash Flood WarningLIXEast Baton Rouge4 hr

Nearby

Flash Flood Warnings in Louisiana, 1995Every flash flood warning in 1995

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.