Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 3, NWS Brownsville, TX

March 15, 2004Cameron County, Hidalgo County, Willacy County, Texas

NWS Brownsville, TX issued this flash flood warning at Mar 15, 2004, 4:30 AM CST for Cameron County, Hidalgo County, Willacy County, Texas. It was in force for 2 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
Mar 15, 2004, 4:30 AM CST (10:30 UTC)
Expired
Mar 15, 2004, 6:30 AM CST
In force
2 hr
Issued by
NWS Brownsville, TX
Area
Counties, with a storm outline in the text

Counties Cameron County, TX, Hidalgo County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 47 km from the middle of the area, began a volume at 10:34 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 00:00Z, 10.5 hours before the alert went out and 49 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 00:00Z on 2004-03-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 192 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 00:00Z on 2004-03-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.19395878Sfc1 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
192 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
854 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KBRO 151035
FFWBRO
TXC061-215-489-151230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
430 AM CST MON MAR 15 2004

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
  SOUTHEASTERN HIDALGO COUNTY IN DEEP SOUTH TEXAS

* UNTIL 630 AM CST

* AT 422 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.     
  DOPPLER RADAR ESTIMATED AROUND 2 INCHES OF RAINFALL HAS FALLEN     
  OVER PORTIONS OF EASTERN WILLACY...SOUTHWEST CAMERON AND           
  SOUTHEAST HIDALGO COUNTIES IN THE PAST HOUR.

* 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...HIDALGO...PORT MANSFIELD...RAYMONDVILLE...WESLACO...
  SAN JUAN...PHARR...MERCEDES...EDCOUCH...DONNA...ALAMO...PORT       
  ISABEL AND  SAN BENITO.

  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.

  DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE    
  ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO     
  CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
  ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

  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 2660 9737 2620 9723 2594 9720 2607 9829 2647 9794

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 14, 6:30 PM CSTFlash Flood WarningBROKenedy90 min

Nearby

Flash Flood Warnings in Texas, 2004Every flash flood warning in 2004

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.