Alert archive / Louisiana / Flash Flood Warnings in 1997

Flash Flood Warning 18, NWS New Orleans, LA

June 18, 1997Lafourche Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at Jun 18, 1997, 8:36 AM CDT for Lafourche Parish, Louisiana. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 18, 1997, 8:36 AM CDT (13:36 UTC)
Expired
Jun 18, 1997, 11:45 AM CDT
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Whole counties

County Lafourche Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 1.6 hours before the alert went out and 279 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, Lake Charles Mun, LA at 12:00Z on 1997-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 544 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, Lake Charles Mun, LA at 12:00Z on 1997-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -66 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
544 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
817 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-66 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 181339
FFWNEW
LAC057-181645-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
836 AM CDT WED JUN 18 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
FLASH FLOOD WARNING    EFFECTIVE UNTIL 1145 AM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST LOUISIANA
 
   ...NORTHERN LAFOURCHE PARISH...
 
NATIONAL WEATHER SERVICE DOPPLER RADAR AND SURFACE OBSERVATIONS
INDICATED ABOUT 5 INCHES OF RAIN IN PORTIONS OF NORTHERN LAFOURCHE
PARISH EARLY THIS MORNING.  SHERIFFS OFFICE OF LAFOURCHE PARISH
REPORTED SOME WATER IN A FEW HOMES AS OF 835 AM CDT.  NO ROADS
WERE REPORTED CLOSED AS OF THIS TIME ALTHOUGH SOME PONDING OF
WATER IN LOW LYING AREAS IS LIKELY.
 
 
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
Jun 18, 3:44 AM CDTSevere Thunderstorm WarningLIXLafourche61 min

Nearby

Flash Flood Warnings in Louisiana, 1997Every flash flood 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.