Alert archive / Louisiana / Flash Flood Warnings in 1995

Flash Flood Warning 22, NWS New Orleans, LA

May 8, 1995Jefferson Parish, Saint Charles Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at May 8, 1995, 11:50 PM CDT for Jefferson Parish, Saint Charles Parish, Louisiana. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 8, 1995, 11:50 PM CDT (04:50 UTC)
Expired
May 9, 1995, 3:45 AM CDT
In force
4 hr
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Jefferson Parish, LA, Saint Charles Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 4.8 hours before the alert went out and 72 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 00:00Z on 1995-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2084 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 00:00Z on 1995-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 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
2084 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
597 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
3.3
Supercell composite
15.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 090456
FFWNEW
LAC051-071-075-087-089-090845-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1150 PM CDT MON MAY 8 1995
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
FLASH FLOOD WARNING    EFFECTIVE UNTIL  345 AM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST LOUISIANA
 
   ...JEFFERSON PARISH...ORLEANS PARISH
   ...NORTHERN PLAQUEMINES PARISH...ST.BERNARD PARISH
   ...ST.CHARLES PARISH
 
...DANGEROUS FLOOD SITUATION OVER THE GREATER NEW ORLEANS AREA...
 
STRONG THUNDERSTORMS WITH TORRENTIAL RAINFALL CONTINUES FROM EAST NEW
ORLEANS TO THE EAST BANK AREAS OF ST CHARLES PARISH. THIS IS A DANGEROUS
FLOOD SITUATION. RAINFALL TOTALS OF 8 TO 12 INCHES HAS OCCURRED OVER THE
METRO NEW ORLEANS AREA SINCE 5 PM. MANY STREETS IN THE WARNED AREA ARE
FLOODED WITH ONE TO THREE FEET OF WATER. FLOODING OF MANY HOMES HAS BEEN
REPORTED IN JEFFERSON PARISH.
 
TRAVEL IS STRONGLY DISCOURAGED IN THE NEW ORLEANS AREA WITH MOST ROAD
IMPASSABLE WITH MANY STRANDED AUTOMOBILES.
 
RAINFALL IS EXPECTED TO SLOWLY DIMINISH ACROSS THE METRO NEW ORLEANS
AREA BETWEEN 1230 AND 130AM THIS MORNING.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES OR LOW SPOTS IF WATER COVERS
THE ROADWAY.
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 7:27 PM CDTSevere Thunderstorm WarningLIXLafourche, Saint Charles63 min
May 8, 7:27 PM CDTSevere Thunderstorm WarningLIXTerrebonne63 min
May 8, 10:44 PM CDTSevere Thunderstorm WarningLIXOrleans, Saint Bernard61 min
May 8, 11:22 PM CDTFlash Flood WarningLIXLafourche, Terrebonne2 hr
May 8, 11:43 PM CDTSevere Thunderstorm WarningLIXSaint Tammany62 min
May 8, 11:43 PM CDTSevere Thunderstorm WarningLIXOrleans62 min
May 8, 11:50 PM CDTFlash Flood WarningLIXOrleans, Plaquemines, Saint Bernard4 hr
May 9, 12:36 AM CDTSevere Thunderstorm WarningLIXSaint Tammany69 min
May 9, 3:19 AM CDTFlash Flood WarningLIXSaint Tammany4 hr
May 9, 4:29 AM CDTSevere Thunderstorm WarningLIXSaint Tammany61 min
May 9, 7:08 AM CDTFlash Flood WarningLIXSaint Tammany4 hr
May 9, 7:21 AM CDTFlash Flood WarningLIXOrleans, Plaquemines, Saint Bernard4 hr
May 9, 7:21 AM CDTFlash Flood WarningLIXJefferson, Saint Charles4 hr
May 9, 10:55 AM CDTFlash Flood WarningLIXSaint Tammany3 hr
May 9, 11:20 AM CDTFlash Flood WarningLIXJefferson, Saint Charles4 hr
May 9, 11:20 AM CDTFlash Flood WarningLIXOrleans4 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.