Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 21, NWS Brownsville, TX

September 18, 2003Brooks County, Kenedy County, Texas

NWS Brownsville, TX issued this flash flood warning at Sep 18, 2003, 4:22 PM CDT for Brooks County, Kenedy 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: Sep 18, 2003, 4:22 PM CDT (21:22 UTC)
Expired: Sep 18, 2003, 7:30 PM CDT
In force: 3 hr
Issued by: NWS Brownsville, TX
Area: Counties, with a storm outline in the text

Counties Brooks County, TX, Kenedy County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 9.4 hours before the alert went out and 102 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: 2496 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 553 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 47 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 182127
FFWBRO
TXC047-261-190030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
422 PM CDT THU SEP 18 2003

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KENEDY COUNTY IN DEEP SOUTH TEXAS
  BROOKS COUNTY IN DEEP SOUTH TEXAS

* UNTIL 730 PM CDT

* AT 421 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.     
  DOPPLER RADAR ESTIMATED OVER 1 INCH OF RAINFALL WEST OF FALFURRIAS 
  AND 2.5 INCHES OF RAINFALL EAST OF SARITA

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING
  INCLUDE...SARITA...FALFURRIAS...BORDER PATROL AND ENCINO.

HEAVY RAINFALL PERSISTING FOR MORE THAN 45 MINUTES WAS REPORTED FROM 
FALFURRIAS. FLOODING IS LIKELY ALONG U.S. HIGHWAY 281 AND 77 THIS 
EVENING.

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO 
CROSS WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER 
TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TURN 
AROUND DONT DROWN

LAT...LON 2722 9745 2662 9747 2664 9798 2680 9798
          2682 9843 2710 9843 2718 9849 2728 9850
          2726 9803 2723 9797

$$

VANSPEYBROECK/STRAUB

1 follow-up statement

000 
WGUS74 KBRO 182211
FFSBRO
TXC047-261-182300-

FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
459 PM CDT THU SEP 18 2003

...A FLASH FLOOD WARNING IS IN EFFECT FOR BROOKS AND KENEDY COUNTIES
UNTIL 730 PM CDT...

SHOWERS AND THUNDERSTORMS WITH MODERATE TO HEAVY RAINFALL CONTINUE
ACROSS MOST OF BROOKS AND KENEDY COUNTIES IN DEEP SOUTH TEXAS.
NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES RAINFALL AMOUNTS
RANGING FROM 2 TO 4 INCHES NEAR THE CITIES OF FALFURRIAS AND EAST OF
SARITA.

SHOWERS AND THUNDERSTORMS WILL DIMINISH OVER DEEP SOUTH TEXAS
TONIGHT. HOWEVER ADDITIONAL SHOWERS AND THUNDERSTORMS ARE
LIKELY TO DEVELOP ACROSS THE RIO GRANDE VALLEY FRIDAY AS DAYTIME
HEATING WILL SPARK AFTERNOON THUNDERSTORM.

REMEMBER...NEVER DRIVE YOUR VEHICLE INTO WATERS OF UNKNOWN DEPTH.
TURN AROUND...DONT DROWN.

FOR THE LATEST WEATHER INFORMATION LISTEN TO YOUR LOCAL NOAA WEATHER
RADIO BROADCAST.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 18, 3:18 PM CDT	Flash Flood Warning	BRO	Cameron	2 hr
Sep 18, 4:53 PM CDT	Flash Flood Warning	BRO	Hidalgo	67 min
Sep 18, 5:53 PM CDT	Flash Flood Warning	BRO	Hidalgo	67 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.