Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 13, NWS Brownsville, TX

August 31, 2001Brooks County, Jim Hogg County, Texas

NWS Brownsville, TX issued this flash flood warning at Aug 31, 2001, 3:10 PM CDT for Brooks County, Jim Hogg County, Texas. It was in force for 4 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
Aug 31, 2001, 3:10 PM CDT (20:10 UTC)
Expired
Aug 31, 2001, 7:00 PM CDT
In force
4 hr
Issued by
NWS Brownsville, TX
Area
Whole counties

Counties Brooks County, TX, Jim Hogg County, TX

The radar

The Corpus Christi radar (KCRP), 125 km from the middle of the area, began a volume at 20:10 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, 8.2 hours before the alert went out and 165 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 2001-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1762 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 2001-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.193958Sfc1 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
1762 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
752 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
48 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 312012
FFWBRO
TXC047-247-312300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
310 PM CDT FRI AUG 31 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN BROOKS COUNTY IN DEEP SOUTH TEXAS
  NORTHERN JIM HOGG COUNTY IN DEEP SOUTH TEXAS  

* UNTIL 700 PM CDT

* AT 252 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH VERY HEAVY RAINFALL HAVE INTENSIFIED NEAR AND TO 
THE NORTHWEST OF FALFURRIAS AND HEBBRONVILLE.  THIS HEAVY RAINFALL 
WAS MOVING SOUTHEAST AT 10 MPH. DOPPLER RADAR ESTIMATED 2 TO 4 
INCHES OVER THE PAST TWO HOURS.  

* 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 
  FLASH FLOODING INCLUDE...FALFURRIAS AND NEAR HEBBRONVILLE.

FLOOD WATERS ARE MOVING DOWN CIBOLO CREEK AND OTHER NEARBY CREEKS 
THAT FLOW THROUGH FALFURRIAS AND HEBBRONVILLE. BEWARE THAT CREEKS 
CAN RISE RAPIDLY...AND THAT LOW WATER CROSSINGS CAN FLOOD EASILY.

JIM HOGG SHERIFFS DEPARTMENT REPORTED BOTH HIGHWAYS 16 JUST NORTH 
OF HEBBRONVILLE...AND 359 JUST EAST OF HEBBRONVILLE WERE FLOODED AT
MESQUITE CREEK. 

THE EMERGENCY MANAGER FROM BROOKS COUNTY ADVISES ALL CITIZENS TO 
STAY TUNED TO KPSO RADIO IN FALFURRIAS.  

IF YOU ENCOUNTER A FLOODED ROAD...TURN AROUND AND FIND AND ALTERNATE 
ROUTE.  EHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. 
MOVE TO HIGHER GROUND.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 8:30 PM CDTSevere Thunderstorm WarningBROJim Hogg, Starr, Zapata60 min
Aug 31, 10:03 AM CDTFlash Flood WarningBROJim Hogg3 hr
Aug 31, 6:50 PM CDTFlash Flood WarningBROBrooks, Jim Hogg3 hr

Nearby

Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001

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.