Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 20, NWS Lake Charles, LA

November 3, 2002Jefferson County, Texas

NWS Lake Charles, LA issued this flash flood warning at Nov 3, 2002, 10:19 AM CST for Jefferson County, Texas. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Nov 3, 2002, 10:19 AM CST (16:19 UTC)
Expired
Nov 3, 2002, 2:15 PM CST
In force
4 hr
Issued by
NWS Lake Charles, LA
Area
Counties, with a storm outline in the text

County Jefferson County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 4.3 hours before the alert went out and 97 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 2002-11-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2002-11-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 475 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
453 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
475 m²/s²
0-3 km storm-relative helicity
648 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KLCH 031619
FFWLCH
TXC245-032015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1015 AM CST SUN NOV 3 2002

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JEFFERSON COUNTY IN SOUTHEAST TEXAS

* UNTIL 215 PM CST

* AT 1007 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  ESTIMATED THAT 4 TO 5 INCHES OF RAIN HAS FALLEN ACROSS NORTHERN 
  JEFFERSON COUNTY DURING THE PAST 3 HOURS.  AN ADDITIONAL 1 TO 2 INCHES 
  OF ADDITIONAL RAINFALL IS EXPECTED IN THE WARNED AREA THROUGH 2 PM.

HEAVY RAINS FLOOD ROADS AND LOW LYING AREAS RAPIDLY...SO DO NOT DRIVE
YOUR VEHICLE WHERE WATERS OF AN UNKNOWN DEPTH COVERS THE ROAD.

REMEMBER...MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

CALL 337-477-5285 TO REPORT FLOODING TO THE WEATHER SERVICE.

LAT...LON 3019 9420 3013 9411 3000 9402 2982 9436
          3009 9434

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 3, 9:49 AM CST, 30 minutes earlier.

Area forecast discussion, Nov 3, 9:49 AM CST, 30 minutes before
SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
949 AM CST SUN NOV 3 2002

LOW PRESSURE CENTER IN COASTAL WATERS SOUTHEAST OF CORPUS CHRISTI AT
9 AM HAS WARM FRONT EXTENDING JUST INLAND ALONG UPPER TEXAS
SOUTHWEST/SOUTH-CENTRAL LOUISIANA COAST. SURFACE LOW SHOULD TRACK
EAST-NORTHEAST ACROSS INTO SOUTH-CENTRAL LOUISIANA THIS EVENING TO
SOUTHERN MISSISSIPPI OR SOUTHERN ALABAMA LATE TONIGHT. THERE IS
LOTS OF MOISTURE OVER THE FORECAST AREA NEAR THE TRACK OF THE LOW.
THERE WAS ALMOST 2 INCHES /1.94/ OF PRECIPITABLE WATER ON THIS
MORNING LAKE CHARLES UPPER AIR SOUNDING. ALSO STRONG WIND SHEAR
SHOWED UP IN THE LOW LEVELS OF SOUNDING THOUGH 0 TO 6 KM SHEAR WAS ON
THE WEAK SIDE..ONLY ABOUT 30 KNOTS OF WIND EXPECTED TODAY AT 6 KM.
STRONG LOW LEVEL SHEAR INDICATES POTENTIAL FOR TORNADOES OR HIGH
WINDS NEAR AND SOUTH OF FRONT SO WILL MENTION POSSIBILITY OF SEVERE
WEATHER IN FORECASTS.

TEMPERATURES HAVE ALREADY RISEN TO 67 AT BEAUMONT SO WILL RAISE HIGH
TEMPERATURES FORECASTS FOR TODAY SOUTHERN PART OF THE AREA.

POTENTIAL FOR HEAVY AND FLOOD PRODUCING RAINS CONTINUES NORTHEAST
AND EAST OF SURFACE LOW AND NEAR FRONT SO WILL CONTINUE FLOOD WATCH
FOR THE ENTIRE AREA FOR TODAY.

.PRELIM NUMBERS...
    SU    MO    TU    S M T
AEX 59 55/61 52/60 50 +73588
BPT 70 60/65 57/64 54 +53696
LCH 70 61/66 57/68 56 +63597
LFT 70 61/66 57/67 56 +83489

.LCH...SMALL CRAFT ADVISORY ALL WATERS...GMZ455-450-470-475
    ...FLOOD WATCH ALL ZONES...LAZ027>033-041>045-051>055-
                               TXZ180>182-201-215-216

20
Hazardous weather outlook, Nov 3, 6:00 AM CST, 4 hours 19 minutes before
LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-041200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
600 AM CST SUN NOV 3 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS...CENTRAL...
SOUTH-CENTRAL AND SOUTHWEST LOUISIANA.

.TODAY AND TONIGHT...
A SURFACE LOW PRESSURE SYSTEM AND ASSOCIATED WARM AND COLD FRONTS
WILL SCOOT NORTHEAST ALONG THE TEXAS COASTLINE AND THEN EASTWARD
ACROSS THE SOUTHWEST LOUISIANA COASTLINE. HEAVY RAINS AND EMBEDDED
THUNDERSTORMS ARE EXPECTED THROUGHOUT THE DAY AND EVENING BEFORE
TAPERING OFF OVERNIGHT. RAINFALL TOTALS FROM 1 TO 3 INCHES WITH
ISOLATED HIGHER AMOUNTS WILL BE POSSIBLE...GENERALLY ALONG AND SOUTH
OF THE I-10 CORRIDOR. LOCALIZED FLOODING WILL BE POSSIBLE TODAY.
SEVERE WEATHER...MAINLY IN THE FORM OF ISOLATED TORNADOES...WILL BE
A POSSIBILITY TODAY ACROSS THE COASTAL SECTIONS OF SOUTHWEST
LOUISIANA. IF THE LOW TRACKS FURTHER INLAND...THE SEVERE WEATHER
RISK WILL ALSO MOVE FURTHER INLAND.

.SPOTTER INFORMATION...
THE ACIVIATION OF SPOTTERS MAY BE REQUIRED THIS AFTERNOON.

.MONDAY THROUGH SATURDAY...
A BRIEF RESPITE FROM SUNDAYS WEATHER WILL OCCUR MONDAY WITH ONLY
SCATTERED SHOWERS EXPECTED. THE NEXT SURGE OF MOISTURE WILL MOVE
NORTHEAST OUT OF EASTERN PACIFIC AND SURGE INTO THE AREA...BRINGING
THE THREAT OF HEAVY RAINS TUESDAY AND TUESDAY NIGHT BEFORE TAPERING
OFF EARLY WEDNESDAY.  HIGH PRESSURE WILL THEN MOVE INTO THE AREA
WEDNESDAY BRINGING PARTLY CLOUDY SKIES FOR THE REMAINDER OF THE
WEEK.

MOGGED

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 3, 12:16 PM CSTFlash Flood WarningLCHOrange4 hr

Nearby

Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002

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.