Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 4, NWS Brownsville, TX

June 15, 2003Willacy County, Texas

NWS Brownsville, TX issued this flash flood warning at Jun 15, 2003, 12:51 PM CDT for 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 outline as issued.

The facts

Issued: Jun 15, 2003, 12:51 PM CDT (17:51 UTC)
Expired: Jun 15, 2003, 4:00 PM CDT
In force: 3 hr
Issued by: NWS Brownsville, TX
Area: Counties, with a storm outline in the text

County Willacy County, TX

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 5.9 hours before the alert went out and 74 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: 3746 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 542 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: -7 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 151756
FFWBRO
TXC489-152100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1251 PM CDT SUN JUN 15 2003

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

* UNTIL 400 PM CDT

* AT 1246 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS NORTHERN   
  WILLACY COUNTY. DOPPLER RADAR ESTIMATED FROM 2 TO 3 INCHES OF      
  RAINFALL HAS BEEN RECEIVED DURING THE PAST HOUR. THIS AREAS HAS    
  ALREADY RECEIVED HEAVY RAINFALL DURING THE PAST FEW DAYS...AND     
  LITTLE ADDITIONAL RAINFALL IS NEEDED TO CREATE FLASH FLOODING.
  LITTLE MOVEMENT WAS NOTED WITH THESE THUNDERSTORMS.

* 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...RAYMONDVILLE AND LYFORD.

ADDITIONAL THUNDERSTORMS ARE FORMING SOUTHWEST OF THIS AREA...AND 
SHOULD CONTINUE TO ADVECT OVER THE WARNED REGION DURING THE 
AFTERNOON.EXCESSIVE RUNOFF FROM HEAVY RAINFALL 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 FLOODING.

LAT...LON 2657 9787 2639 9786 2641 9743 2660 9744

$$

PHILO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 10:16 AM CDT	Special Marine Warning	BRO		44 min
Jun 15, 11:00 AM CDT	Special Marine Warning	BRO		60 min
Jun 15, 11:55 AM CDT	Flash Flood Warning	BRO	Kenedy	3 hr
Jun 15, 12:38 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy, Willacy	37 min
Jun 15, 1:20 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Willacy	40 min
Jun 15, 1:28 PM CDT	Tornado Warning	BRO	Cameron, Willacy	32 min
Jun 15, 1:58 PM CDT	Flash Flood Warning	BRO	Cameron	3 hr
Jun 15, 2:10 PM CDT	Severe Thunderstorm Warning	BRO	Cameron	50 min
Jun 15, 2:30 PM CDT	Special Marine Warning	BRO		60 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.