Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 46, NWS Brownsville, TX

August 10, 2004Hidalgo County, Texas

NWS Brownsville, TX issued this flash flood warning at Aug 10, 2004, 9:03 PM CDT for Hidalgo County, Texas. It was in force for 87 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 10, 2004, 9:03 PM CDT (02:03 UTC)
Expired: Aug 10, 2004, 10:30 PM CDT
In force: 87 min
Issued by: NWS Brownsville, TX
Area: Counties, with a storm outline in the text

County Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 116 km from the middle of the area, began a volume at 02:02 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, 2.1 hours before the alert went out and 118 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: 2064 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1071 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KBRO 110206
FFWBRO
TXC215-110330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
903 PM CDT TUE AUG 10 2004

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN HIDALGO COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 1030 PM CDT

* AT 903 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS WESTERN HIDALGO 
  COUNTY NEAR SULLIVAN CITY AND LA JOYA. DOPPLER RADAR ESTIMATED 
  FROM 3 TO 5 INCHES OF RAINFALL HAS BEEN RECEIVED IN AND 
  NEAR SULLIVAN CITY.

* 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...SULLIVAN CITY AND LA JOYA.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING. REMEMBER...WHEN
CONFRONTED WITH WATERS OF UNKNOWN DEPTH...TURN AROUND...DONT DROWN.

LAT...LON 2632 9842 2615 9853 2611 9867 2644 9851

$$

PHILO

1 follow-up statement

000 
WGUS74 KBRO 110257
FFSBRO
TXC215-110315-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
956 PM CDT TUE AUG 10 2004

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WESTERN HIDALGO 
COUNTY UNTIL 1030 PM CDT HAS BEEN CANCELLED...

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 2637 9832 2601 9838 2610 9867 2639 9854

$$

PHILO

Nearby

Flash Flood Warnings in Texas, 2004 Every 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.