Alert archive / Texas / Flash Flood Warnings in 1999

Flash Flood Warning 34, NWS Lake Charles, LA

June 26, 1999Jefferson County, Orange County, Texas

NWS Lake Charles, LA issued this flash flood warning at Jun 26, 1999, 4:15 AM CDT for Jefferson County, Orange County, Texas. It was in force for 105 min. 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 26, 1999, 4:15 AM CDT (09:15 UTC)
Expired
Jun 26, 1999, 6:00 AM CDT
In force
105 min
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 09:19 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, 9.3 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 00:00Z on 1999-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 336 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, Lake Charles Mun, LA at 00:00Z on 1999-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 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
336 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
833 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLCH 260917
FFWLCH
TXC245-361-261115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
415 AM CDT SAT JUN 26 1999

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 600 AM CDT

* AT 415 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED THAT
  1 TO 2 INCHES OF RAIN HAD FALLEN ACROSS EASTERN JEFFERSON AND
  ORANGE COUNTIES OVER THE PAST 2 HOURS. 2 TO 3 INCHES OF
  ADDITIONAL RAINFALL IS EXPECTED ACROSS THIS AREA THROUGH 600 AM.

* FLOODING OF LOW LYING AREAS WILL BE POSSIBLE.  STREET FLOODING IN
  THE CITIES OF PORT ARTHUR...BRIDGE CITY AND ORANGE WILL OCCUR.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...
ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING. IT IS VERY DIFFICULT
AT NIGHT TO TELL HOW MUCH WATER IS ON ROADS. MOTORISTS SHOULD NOT
DRIVE THROUGH WATER OF UNKNOWN DEPTH.

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 Jun 26, 1:55 AM CDT, 2 hours 20 minutes earlier.

Area forecast discussion, Jun 26, 1:55 AM CDT, 2 hours 20 minutes before
SOUTHEAST TEXAS...SOUTHWEST/CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
155 AM CDT SAT JUN 26 1999

ANOTHER DIFFICULT FORECAST WITH MODELS DIFFERING SIGNIFICANTLY ON
PRECIP NEXT 48 HOURS. THUNDERSTORMS HAVE ALREADY REDEVELOPED ACROSS
FA / COASTAL WATERS THIS MORNING WITH HEAVY RAIN CONTINUING. WSR-88D
PRECIPITATION ESTIMATES INDICATE THAT 1-2 INCHES OF WIDESPREAD RAIN
HAS OCCURRED ACROSS SOUTHEAST TEXAS AND SOUTHERN LOUISIANA...WITH
LOCALIZED POCKETS OF 4-5 INCHES OVER SOUTHERN ZONES. THIS VERIFIES
NICELY WITH OBSERVER RAINFALL TOTALS. FLASH FLOOD GUIDANCE REMAINS LOW
ACROSS FA AND WILL THEREFORE BE CONSERVATIVE AND CONTINUE FLASH FLOOD
WATCH FOR TODAY. ANY HEAVY RAIN THAT DEVELOPS WILL LIKELY CAUSE
FLOODING.

UPPER LOW MOVING NE INTO MISSOURI ATTM WITH 500 MB SHEAR AXIS LOCATED
ALONG THE TEXAS/LA BORDER.  MCS MOVING SE INTO NORTH-CENTRAL TEXAS
ALONG PERIPHERY OF UPPER LEVEL HIGH.  HAVE DISCOUNTED NGM MODEL AND
WILL DEVIATE SIG ON 1ST/2ND PERIOD POPS. WILL LEAN MORE TOWARD THE
AVN/ETA SOLUTION KEEPING 500 MB SHEAR AXIS OVER THE AREA WITH PWS
REMAINING HIGH. (AROUND 2.00 INCHES). ANY PRECIP THAT DEVELOPS WILL
CONTAIN LOCALLY HEAVY RAINFALL. WILL TAPER POPS FROM WEST TO EAST WITH
BEST PRECIP CHANCES OCCURRING OVER SOUTH-CENTRAL LOUISIANA. COULD
AGAIN SEE WIDESPREAD 1-2 INCH RAINFALL TOTALS WITH LOCALLY 5 INCHES
POSSIBLE. WILL LOWER RAIN CHANCES FOR SUN BUT MAY HAVE TO BE REVISED
ON LATER MODEL RUNS DEPENDING ON EXACT LOCATION / STRENGTH OF TROUGH
AXIS. ETA TRIES TO KEEP FEATURE STATIONARY WITH PRECIP CONTINUING
ALONG COASTAL SECTIONS.  WENT LOWER ON HIGH TEMPS DUE TO FORECASTED
CLOUDS/PRECIP.

FFA ENTIRE LCH FA TODAY...LOCALLY HEAVY RAINFALL POSSIBLE.

12

LCH 86/77/88/77 7341
LFT 85/76/88/76 8441
AEX 86/75/88/76 7221
BPT 87/77/90/77 6231

Nearby

Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999

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.