Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 21, NWS Corpus Christi, TX

October 11, 2003La Salle County, Live Oak County, McMullen County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Oct 11, 2003, 7:27 PM CDT for La Salle County, Live Oak County, McMullen County, Texas. 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 outline as issued.

The facts

Issued: Oct 11, 2003, 7:27 PM CDT (00:27 UTC)
Expired: Oct 11, 2003, 10:30 PM CDT
In force: 3 hr
Issued by: NWS Corpus Christi, TX
Area: Counties, with a storm outline in the text

Counties La Salle County, TX, Live Oak County, TX, McMullen County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 0.5 hours before the alert went out and 155 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2081 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KCRP 120029
FFWCRP
TXC283-297-311-120330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
727 PM CDT SAT OCT 11 2003

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LA SALLE COUNTY IN TEXAS
  NORTHERN LIVE OAK COUNTY IN TEXAS
  NORTHERN MCMULLEN COUNTY IN TEXAS

* UNTIL 1030 PM CDT

* AT 722 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  AN A LINE OF SHOWERS AND THUNDERSTORMS EXTENDING FROM ARTESIA 
  WELLS TO JUST NORTHEAST OF THREE RIVERS.  MOVEMENT WAS NORTHWEST
  AT 5 MPH.  RAINFALL DURING THE PAST TWO HOURS RANGED FROM 1.5 TO 
  2 INCHES ACROSS THE AREA.  THESE SHOWERS AND THUNDERSTORMS WILL
  LIKELY PRODUCE AN ADDITIONAL 1 TO 2 INCHES OF RAIN.  

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

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 HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
CORPUS CHRISTI.

LAT...LON 2846 9801 2810 9934 2868 9969 2897 9851
          2868 9809

$$

AP

1 follow-up statement

000 
WGUS74 KCRP 120257
FFSCRP
TXC283-297-311-120330-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
950 PM CDT SAT OCT 11 2003

...FLASH FLOOD WARNING IN EFFECT FOR LA SALLE...NORTHERN MCMULLEN
   AND NORTHERN LIVE OAK COUNTIES UNTIL 1030 PM...

...A FLASH FLOOD WATCH IS IN EFFECT FOR LIVE OAK...LA SALLE...
   MCMULLEN AND WEBB COUNTIES UNTIL 600 AM SUNDAY MORNING...

BETWEEN 830 AND 930 PM...LAW ENFORCEMENT AGENCIES REPORTED WATER UP
TO 6 INCHES OVER THE ROAD AT HIGHWAY 72 NEAR CALLIHAM.  ALSO AT 930
PM...HIGHWAY 624 OVER SOUTHEAST LA SALLE AND SOUTHWEST MCMULLEN
COUNTIES WAS CLOSED DUE TO HIGH WATER.

AT 940 PM...DOPPLER RADAR INDICATED A LARGE AREA OF SHOWERS AND
THUNDERSTORMS OVER THE RIO GRANDE PLAINS.  TORRENTIAL RAIN WAS
CONTINUING BETWEEN FOWLERTON AND COTULLA.  RAINFALL ESTIMATES FROM
DOPPLER RADAR RANGED FROM 3 TO 6 INCHES OVER THE WARNED AREA.  MORE
SHOWERS AND THUNDERSTORMS WILL LIKELY AFFECT THE RIO GRANDE PLAINS
AND MUCH OF SOUTH TEXAS FOR THE REMAINDER OF THE NIGHT.

MOTORISTS...ESPECIALLY THOSE DRIVING ON INTERSTATE HIGHWAY 35 OVER
WESTERN LA SALLE COUNTY...ARE URGED TO EXERCISE EXTREME CAUTION
TONIGHT.  DO NOT DRIVE IN WATER OF UNKNOWN DEPTH.

STAY TUNED TO NOAA WEATHER RADIO OR COMMERCIAL RADIO AND TELEVISION
FOR THE LATEST UPDATES FROM THE NATIONAL WEATHER SERVICE.

$$

AP

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 11, 10:25 PM CDT	Flash Flood Warning	CRP	La Salle, McMullen, Webb	3 hr
Oct 12, 1:27 AM CDT	Flash Flood Warning	CRP	La Salle, McMullen, Webb	3 hr
Oct 12, 4:25 AM CDT	Flash Flood Warning	CRP	Duval, La Salle, McMullen, Webb	3 hr
Oct 12, 7:20 AM CDT	Flash Flood Warning	CRP	Jim Wells, La Salle	70 min
Oct 12, 8:22 AM CDT	Flash Flood Warning	CRP	Jim Wells, La Salle	113 min
Oct 12, 10:08 AM CDT	Flash Flood Warning	CRP	Jim Wells	3 hr
Oct 12, 12:06 PM CDT	Special Marine Warning	CRP		114 min

Nearby

Flash Flood Warnings in Texas, 2003 Every flash flood warning in 2003

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.