Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 47, NWS Lake Charles, LA

August 14, 1998Jefferson County, Orange County, Texas

NWS Lake Charles, LA issued this flash flood warning at Aug 14, 1998, 1:39 PM CDT for Jefferson County, Orange County, Texas. It was in force for 2 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
Aug 14, 1998, 1:39 PM CDT (18:39 UTC)
Expired
Aug 14, 1998, 3:40 PM CDT
In force
2 hr
Issued by
NWS Lake Charles, LA
Area
Whole counties

Counties Jefferson County, TX, Orange County, TX

The radar

The Lake Charles radar (KLCH), 79 km from the middle of the area, began a volume at 18:42 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 12:00Z, 6.7 hours before the alert went out and 81 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 1998-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2712 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 1998-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -101 square meters per square second.1939Sfc1 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
2712 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
652 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-101 m²/s²
0-3 km storm-relative helicity
-123 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 KLCH 141840
FFWLCH
TXC245-361-142040-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
139 PM CDT FRI AUG 14 1998

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JEFFERSON COUNTY IN SOUTHEASTERN TEXAS
  ORANGE COUNTY IN SOUTHEASTERN TEXAS

* UNTIL 340 PM CDT

* AT 135 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED
THAT 2 TO 4 INCHES OF RAIN HAS FALLEN ACROSS JEFFERSON AND
ORANGE COUNTIES DURING THE PAST 2 HOURS. 2 TO 4 INCHES OF
ADDITIONAL RAINFALL IS EXPECTED ACROSS THE AREA OVER THE NEXT 2
HOURS .

* FLOODING OF ROADS AND SMALL STREAMS IS EXPECTED.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS
THE ROAD TO UNKNOWN DEPTHS. THE DEPTH OF THE WATER MAY BE
TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. REMEMBER...MOST
FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

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 Aug 14, 9:59 AM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, Aug 14, 9:59 AM CDT, 3 hours 40 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
959 AM CDT FRI AUG 14 1998

OFFSHORE ACTIVITY EXTENDING INTO SOUTH CENTRAL LA IS PERSISTING
AND SHOWING SOME SIGNS OF BACKBUILDING. UPPER LOW OFF SOUTHEAST
TX COAST SHUD HELP SUSTAIN THIS ACTIVITY. FLASH FLOOD GUIDANCE IS
PRETTY HIGH OVER THIS AREA BUT WILL HAVE TO KEEP AN EYE ON RAINFALL
ACCUMULATIONS. TEMPS WILL BE QUITE A BIT COOLER TODAY WITH CLOUDS
AND RAIN...MAYBE EVEN COOLER THAN FORECAST IN SOME AREAS. SE TX
ZONES LOOK OK. COULD BOOST POPS IN SOUTH CENTRAL LA AND LOWER TEMP
TO MID 80S. 8

Nearby

Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998

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.