Alert archive / Louisiana / Flash Flood Warnings in 1996

Flash Flood Warning 23, NWS Lake Charles, LA

November 17, 1996Acadia Parish, Jefferson Davis Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Nov 17, 1996, 9:09 PM CST for Acadia Parish, Jefferson Davis 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
Nov 17, 1996, 9:09 PM CST (03:09 UTC)
Expired
Nov 18, 1996, 12:00 AM CST
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Whole counties

Counties Acadia Parish, LA, Jefferson Davis Parish, LA

The radar

The Lake Charles radar (KLCH), 60 km from the middle of the area, began a volume at 03:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.2 hours before the alert went out and 59 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 00:00Z on 1996-11-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 943 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 00:00Z on 1996-11-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 square meters per square second.193958Sfc1 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
943 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
572 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLCH 180312
FFWLCH
LAC001-053-180600-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
909 PM CST SUN NOV 17 1996
 
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL MIDNIGHT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST LOUISIANA
 
   ...ACADIA PARISH...JEFFERSON DAVIS PARISH
 
AT 906 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT 2 TO 4 INCHES OF RAIN HAD FALLEN ACROSS WESTERN JEFFERSON
DAVIS AND EASTERN ACADIA PARISHES IN AN HOURS TIME. THIS HAS
CAUSED FLOODING IN THE CITY OF JENNINGS. 2 FEET OF WATER WAS
ALSO REPORTED OVER HIGHWAY 102 NEAR PINE ISLAND IN JEFFERSON
DAVIS PARISH. AN ADDITIONAL 1/2 TO 1 INCH OF RAIN IS LIKELY OVER
THE NEXT COUPLE OF HOURS...THIS WILL CAUSE ADDITIONAL FLOODING
PROBLEMS.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSE\RVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this flash flood warning went out at Nov 17, 8:11 PM CST, 58 minutes earlier.

Area forecast discussion, Nov 17, 8:11 PM CST, 58 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
800 PM CST SUN NOV 17 1996

COLD FRONT CURRENTLY EXTENDS FROM NEAR ESF-LCH-GLS. WOULD LIKE
TO DROP POPS ALTOGETHER ACROSS SE TX. WOULD ALSO LIKE TO DROP
COASTAL FLOOD WARNING FOR JEFFERSON COUNTY SINCE THE WINDS ARE
NOW OUT OF THE NORTHWEST.

WOULD LIKE TO DROP POPS TO SLIGHT CHC FOR EXTREME SW AND CEN
LA. POPS SHOULD REMAIN HIGH ACROSS SOUTH CENTRAL LA AS CF MAKES
IT WAY SLOWLY THROUGH THE FA. WOULD LIKE TO LOWER MIN TEMPS
TONIGHT A CAT ACROSS THE FA.   LCH 55   AEX 52  LFT 57

 10

In the hours before

Special weather statement, Nov 17, 6:20 PM CST, 2 hours 49 minutes before
LAZ031-041-042-180200-

URBAN AND SMALL STREAM ADVISORY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
618 PM CST SUN NOV 17 1996

...AN URBAN AND SMALL STREAM ADVISORY IS IN EFFECT THROUGH
THIS EVENING FOR CALCASIEU...JEFFERSON DAVIS...AND ALLEN
PARISHES...

AT 615 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INIDICATED
THAT 2 TO 3 INCHES OF RAIN HAVE FALLEN ACROSS NORTHEASTERN
CALCASIEU PARISH...NORTHERN JEFFERSON DAVIS PARISH AND
SOUTHERN ALLEN PARISH. THIS HAS CAUSED FLOODING OF SOME BAYOUS AND
LOW LYING AREAS. AN ADDITIONAL 1/2 TO 1 INCH OF RAIN IS POSSIBLE
OVER THE NEXT TWO HOURS. THIS WILL CAUSE ADDITIONAL FLOODING
OF LOW LYING AREAS AND BAYOUS. THE RAIN WILL COME TO END BY
10 PM THIS EVENING AS A COLD FRONT MOVES THROUGH THE AREA.

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.

Nearby

Flash Flood Warnings in Louisiana, 1996Every flash flood warning in 1996

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; radar from the NEXRAD Level II archive.