Flash Flood Warning 12, NWS Corpus Christi, TX

Issued

Jul 3, 2002, 4:37 AM CDT (09:37 UTC)

Expired

Jul 3, 2002, 7:30 AM CDT

In force

3 hr

Issued by

NWS Corpus Christi, TX

Area

Counties, with a storm outline in the text

Counties La Salle County, TX, McMullen County, TX

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WGUS54 KCRP 030937
FFWCRP
TXC283-311-031230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
436 AM CDT WED JUL 3 2002

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI EXTENDS THE

* FLASH FLOOD WARNING FOR...
  LA SALLE COUNTY IN TEXAS
  MCMULLEN COUNTY IN TEXAS

* UNTIL 730 AM CDT

* AT 436 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
A NEARLY STATIONARY AREA OF THUNDERSTORMS WITH TORRENTIAL RAINS 
ACROSS LA SALLE AND MCMULLEN COUNTIES. 2 TO 4 INCHES WITH LOCALIZED 
AMOUNTS BETWEEN 4 AND 8 INCHES HAVE FALLEN IN THE PAST 4 HOURS. 
SEVERAL ADDITIONAL INCHES OF RAIN ARE LIKELY...CREATING A DANGEROUS 
SITUATION

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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.

LAT...LON 2863 9835 2806 9835 2805 9939 2863 9939

NWS Corpus Christi, TX wrote its last area forecast discussion before this flash flood warning went out at Jul 3, 3:00 AM CDT, 1 hour 37 minutes earlier.

COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
300 AM CDT WED JUL 3 2002

DISCUSSION...SIGNIFICANT ADDITIONAL FLOODING EXPECTED ACROSS THE
WESTERN CWA..WITH LASALLE/MCMULLEN COUNTIES RECEIVING THE GREATEST
RAINFALL..FURTHER AGGREVATING THE 10-15 INCHES ALREADY MEASURED OVER
THIS AREA DURING THE PAST FEW DAYS.

SYNOPTICALLY..THE ELONGATED TROF SITUATED OVER THE WESTERN HALF OF
TEXAS REMAINS CAUGHT BETWEEN A DEEP DRY CORE VORTEX OVER SOUTHERN
CALIFORNIA ANOTHER UPPER VORTEX ROTATING OVER SOUTHERN FLORIDA.
DURING THE SHORT-TERM..PVA AND A VERY UNSTABLE AIRMASS OVER THE WRN
FA WILL IGNITE ADDITIONAL CONVECTION WITH LITTLE MOVEMENT
ANTICIPATED DUE TO THE QSTNRY TROF AXIS OVERHEAD AND THE LOWS TO THE
WEST AND EAST.  PWAT VALUES WILL DECREASE ACROSS THE ERN FA AND
REMAIN TROPICAL OVER THE WEST.  AS A RESULT..WILL PLACE THE WRN FA
IN THE FLASH FLOOD WATCH AND REMOVE THE ERN FA.

THE WATCH WILL ENCOMPASS LASALLE..MCMULLEN..LIVE OAK..DUVAL AND
WEBB.  URBAN FLOODING IS POSSIBLE ACROSS PORTIONS OF THE EASTERN
COUNTIES THAT RECEIVED HEAVY RAINFALL THIS WEEK..MAINLY
VICTORIA..REFUGIO AND BEE.

THE TROPICAL PWAT AIR WILL REMAIN OVER THE WRN FA AND SLOWLY
PROPAGATE WESTWARD LATE IN THE WEEK.  AS THE CA VORTEX PUSHES EWD
AND THE FL VORTEX PUSHES WWD..THE RIDGE OVER THE OHIO VALLEY WILL
BECOME THE DOMINANT FEATURE LATE IN THE WEEKEND AND FORCE A PIECE OF
THE FL LOW AND ASSOCIATED MOISTURE ACROSS THE GULF AND TOWARD THE
CWA LATE IN THE WEEKEND AND EARLY NEXT WEEK.  SUBSIDENCE EXPECTED
FRI/SAT AHEAD OF THE WAVE..WITH RAINFALL POTENTIAL SUN-TUE.

MARINE...SUFFICIENTLY STRONG LOW-LEVEL JET AND UNSTABLE LOW-LEVEL
LAPSE RATES SUPPORTS LOW-END SCA CONDITIONS FOR THE BAYS/DAY AND
OFFSHORE/NIGHT THROUGH THURSDAY NIGHT. WEAK EASTERLY FLOW DEVELOPS
THEREAFTER. MARGINAL BOUNDARY LAYER MOISTURE/FORCING ARGUES ISOLATED
SHOWERS OFFSHORE THROUGH FRIDAY MORNING. THEREAFTER...SUBSIDENT
SECTOR OF STRONG TROPICAL WAVE WILL INHIBIT CONVECTION UNTIL LATE
SUNDAY.

THE FORECAST NUMBERS ARE NEXT...
CRP BB 091/077 092/076 093 3--
VCT BB 091/075 092/075 093 32-
LRD TE 094/078 094/078 095 644

BML.76 / BB.85

.CRP...FLASH FLOOD WATCH TODAY TXZ229>231-239-240.
       SCA GMZ230-235.

Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002

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.