Flash Flood Warning 14, NWS Brownsville, TX

Issued

Aug 31, 2001, 6:50 PM CDT (23:50 UTC)

Expired

Aug 31, 2001, 10:00 PM CDT

In force

3 hr

Issued by

NWS Brownsville, TX

Area

Whole counties

Counties Brooks County, TX, Jim Hogg County, TX

The Corpus Christi radar (KCRP), 125 km from the middle of the area, began a volume at 23:52 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.

000 
WGUS54 KBRO 312354
FFWBRO
TXC047-247-010300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
650 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 1000 PM CDT

* AT AROUND 630 PM...THE BROOKS COUNTY EMERGENCY MANAGER REPORTED 
LOS OLMOS CREEK WAS NEAR BANKFULL AT THE JIM WELLS AND BROOKS COUNTY 
LINE JUST NORTHWEST OF FALFURRIAS. IN ADDITION...ALL THE CREEKS NEAR 
FALFURRIAS WERE RUNNING FAST.  THE FALFURRIAS SHERIFFS DEPARTMENT 
REPORTED THAT HIGHWAY 285 BETWEEN FALFURRIAS AND HEBBRONVILLE WAS 
FLOODED.  

ALSO...THE JIM HOGG SHERIFFS DEPARTMENT REPORTED THAT HIGHWAY 16 
JUST NORTH OF HEBBRONVILLE CONTINUE CLOSED BECAUSE OF HIGHWATER. AT 
648 PM...BROWNSVILLE DOPPLER RADAR HAS INDICATED THAT THE HEAVIEST 
RAIN HAS MOVED SOUTHEAST OF FALFURRIAS.

* SLOW MOVING THUNDERSTORMS HAD PRODUCED TORRENTIAL RAINFALL IN THE  
WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CONTINUE TO 
CAUSE FLASH FLOODING. THE AREA IN AND AROUND FALFURRIAS...AND 
HEBBRONVILLE WILL CONTINUE TO EXPERIENCE FLASH FLOODING THIS EVENING.

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.

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

IF YOU LIVE IN A FLOOD PRONE AREA...MOVE TO HIGHER GROUND NOW

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

NWS Brownsville, TX wrote its last area forecast discussion before this flash flood warning went out at Aug 31, 2:40 PM CDT, 4 hours 10 minutes earlier.

DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
240 PM CDT FRI AUG 31 2001

VISIBLE SATELLITE IMAGERY THIS AFTERNOON INDICATES LOW/MID LEVEL
CLOUD COVER REMAINING ACROSS THE EASTERN TWO-THIRDS OF THE
CWA...WITH CLEARING SKIES IN THE WESTERN VALLEY.  WATER VAPOR
IMAGERY HINTS AT A SUBTLE VORT MAX MOVING EAST ACROSS SOUTHERN
TEXAS...WITH SUBSIDENCE NOTED IN THE MID-LEVEL ANTICYCLONIC FLOW
REGIME OVER THE WESTERN VALLEY.  THIS VORT MAX IS LIKELY INDUCING
THE VERY WEAK SURFACE LOW OVER JIM HOGG AND BROOKS COUNTIES AT THIS
TIME.  WILL PRIMARILY USE THE 31/12Z AVN FOR THIS FORECAST...AS IT
SEEMS TO HAVE BETTER INITIALIZED THE MID-LEVEL AND SURFACE FEATURES
THAT ARE OF MOST IMPORTANCE TO DEEP SOUTH TEXAS.  AS THE VORT MAX
OVER SOUTH-CENTRAL TEXAS CONTINUES TO MOVE EAST...SUBSIDENCE
COMBINED WITH WEAK CONFLUENT FLOW AT 500 MB...AND LACK OF ANY WAVES
UPSTREAM SHOULD HELP TO KEEP THINGS RELATIVELY QUIET AROUND THE AREA
TONIGHT.  HOWEVER...GIVEN THE VERY MOIST AIRMASS OVER THE
AREA...WILL MAINTAIN ISOLATED POPS TONIGHT.  UPPER RIDGING TRIES TO
BUILD OVER THE AREA ON SATURDAY AND SUNDAY...BUT WITH ONLY VERY
SLIGHT FLUCTUATIONS IN 500 MB HEIGHT AND THE PRESENCE OF A WEAK 500
MB TROUGH OVER CENTRAL TEXAS...WILL MAINTAIN ISOLATED TO LOW-END
SCATTERED POPS THROUGH SUNDAY NIGHT.

BY LABOR DAY...MODELS ARE FORECASTING THE MID-LEVEL TROUGH TO
AMPLIFY OVER TEXAS...WITH A TRANSITION TO SHARP MID/UPPER LEVEL
NORTHWEST FLOW OVER THE AREA.  THIS WILL ONLY SERVE TO INCREASE THE
PRECIPITATION CHANCES ACROSS THE AREA...ONCE AGAIN...AS NUMEROUS
MID-LEVEL WAVES ARE ALLOWED TO MOVE SOUTHEAST AND ACROSS SOUTH TEXAS
IN THE DIFFLUENT FLOW PATTERN AT 500 MB.  WILL GO WITH CHANCE POPS
EACH DAY THROUGH THURSDAY...AS TROFFING REMAINS OVER THE AREA.

MARINE...SOUTHEAST WINDS AROUND 15 KNOTS PRODUCING 6 TO 7 FOOT SEAS
AT BUOY 020.  THUS...SCA WILL BE MAINTAINED FOR NOW.  MODERATE
SOUTHEAST WINDS WILL PREVAIL THROUGH NEXT WEEK.  SHOWERS AND
THUNDERSTORMS WILL REMAIN IN THE FORECAST...WITH THE BEST CHANCES AT
THE BEGINNING OF NEXT WEEK.

PRELIMINARY NUMBERS:
BRO BB 078/095 078/095 078  20/30/20/30/20
HRL BB 077/096 077/096 077  20/30/20/30/20
MFE BB 078/098 078/098 078  20/30/20/30/20
RGC BB 077/099 077/099 077  20/30/20/30/20
SPI BB 079/089 079/089 079  20/30/20/30/20

SYNOPTIC...DD (65) / AVIATION-MARINE...HG (52) / MESO...TA

.BRO...FFA FOR TXZ 248-249-250-251.
       SCA FOR GMZ 130-150-155-170-175.

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

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.