Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 29, NWS Brownsville, TX

September 19, 2003Cameron County, Willacy County, Texas

NWS Brownsville, TX issued this flash flood warning at Sep 19, 2003, 4:55 PM CDT for Cameron County, Willacy 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 counties it named.

The facts

Issued
Sep 19, 2003, 4:55 PM CDT (21:55 UTC)
Expired
Sep 19, 2003, 8:00 PM CDT
In force
3 hr
Issued by
NWS Brownsville, TX
Area
Whole counties

Counties Cameron County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 46 km from the middle of the area, began a volume at 21:54 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 9.9 hours before the alert went out and 48 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, Brownsville Intl, TX at 12:00Z on 2003-09-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 535 joules per kilogram.LCLLFCEL10008507005003002001001 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, Brownsville Intl, TX at 12:00Z on 2003-09-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 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
535 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
629 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
4 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 
WGUS54 KBRO 192159
FFWBRO
TXC061-489-200100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
455 PM CDT FRI SEP 19 2003

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CAMERON COUNTY IN DEEP SOUTH TEXAS
  WILLACY COUNTY IN DEEP SOUTH TEXAS

* UNTIL 800 PM CDT

* AT 455 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  HEAVY RAINFALL OF CLOSE TO ONE INCH PER HOUR CONTINUES ACROSS THE
  WARNED AREA. DOPPLER RADAR HAS ESTIMATED TWO TO THREE INCHES OF
  RAINFALL HAS OCCURRED DURING THE PAST THREE HOURS IN EASTERN 
  CAMERON AND WILLACY COUNTIES.

* HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA. RUNOFF FROM
  THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME
  LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...RAYMONDVILLE...
  SAN BENITO...LA FERIA...HARLINGEN...BROWNSVILLE...LYFORD...
  SEBASTIAN...SANTA ROSA...RIO HONDO...RANCHO VIEJO...LOS FRESNOS AND
  COMBES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

$$

LAT...LON 2658 9746 2627 9736 2609 9731 2606 9721
          2597 9719 2588 9744 2604 9765 2608 9783
          2645 9785 2648 9798 2659 9794
2 follow-up statements
000 
WGUS74 KBRO 192326
FFSBRO
TXC061-489-200100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
625 PM CDT FRI SEP 19 2003

...FLASH FLOOD WARNING CONTINUES UNTIL 800 PM CDT FOR CAMERON AND 
WILLACY COUNTIES...

AT 620 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR 
ESTIMATED THAT RAINFALL RATES OF HALF AN INCH TO AN INCH PER HOUR 
WERE FALLING OVER WESTERN AND CENTRAL PORTIONS OF CAMERON AND 
WILLACY COUNTIES.

HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA. RUNOFF FROM THIS
EXCESSIVE RAINFALL WILL CAUSE FLOODING TO OCCUR...ESPECIALLY ALONG
SMALL STREAMS AND NEAR LOW WATER CROSSINGS. SOME LOCATIONS THAT WILL
EXPERIENCE FLOODING INCLUDE... RAYMONDVILLE...SAN BENITO...LA
FERIA...HARLINGEN...LYFORD...SEBASTIAN...SANTA ROSA...RIO HONDO...
RANCHO VIEJO...LOS FRESNOS...COMBES AND SAN PERLITA.

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

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. 
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS 
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY 
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK 
HIGHER GROUND.

LAT...LON 2657 9747 2589 9739 2608 9784 2657 9787

$$

CASTILLO
000 
WGUS74 KBRO 200102
FFSBRO
TXC489-200130-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
801 PM CDT FRI SEP 19 2003

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WILLACY COUNTY HAS 
BEEN ALLOWED TO EXPIRE...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 2658 9747 2637 9746 2638 9783 2659 9794

$$

CASTILLO

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 19, 6:55 AM CDTFlash Flood WarningBROHidalgo3 hr
Sep 19, 7:00 AM CDTFlash Flood WarningBROKenedy, Willacy3 hr
Sep 19, 8:19 AM CDTFlash Flood WarningBROCameron, Willacy3 hr
Sep 19, 10:00 AM CDTFlash Flood WarningBROHidalgo2 hr
Sep 19, 10:55 AM CDTFlash Flood WarningBROCameron, Willacy2 hr

Nearby

Flash Flood Warnings in Texas, 2003Every 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; radar from the NEXRAD Level II archive.