Texas, 2003

Flash Flooding in Texas, September 18, 2003

September 18, 2003 · NWS CRP · 6 events in 6 counties and zones

6 flash flood, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
6

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Corpus Christi, TX wrote its last area forecast discussion before the first event at Sep 18, 9:07 AM CST, 4 hours 28 minutes earlier.

Area forecast discussion, Sep 18, 9:07 AM CST, 4 hours 28 minutes before
SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1007 AM CDT THU SEP 18 2003

UPPER JET DYNAMICS/WEAK UPPER TROUGH WILL COMBINE WITH COPIOUS MSTR TO
GENERATE ADDITIONAL CONVECTION THIS AFTN. MSAS DEPICTS A SFC TROUGH
JUST OFF THE COAST. THIS TROUGH HAS PERSISTED DRG THE PAST SEVERAL
DAYS. THE GFS/ETA PROGS THIS TROUGH TO MOVE ONSHORE THIS AFTN AND
ACRS THE CWFA OVERNIGHT IN ADVANCE OF THE FRONT. NOT CONVINCED OF
THIS GIVEN THE LIKELIHOOD THAT THE UPPER DYNAMICS WOULD SUPPORT PSBL
DEVELOPMENT OF THIS WAVE/MAINTAIN IT WITHOUT MUCH MOVEMENT WESTWARD.
ANTICIPATE THAT THE SFC TROUGH WL NOT ADVANCE FARTHER THAN THE ALONG
THE COAST. WL MAINTAIN THE HIGHEST POPS OVR THE EAST BASED ON
EXPECTED SFC CONVERGENCE. EXTREMELY HIGH PW VALUES WL CONTRIBUTE TO
HEAVY RAINFALL. WL MAINTAIN THE FFG WATCH. 1-HR FFG FOR LASALLE ONLY
1 INCH...HWR NO RAINFALL IS OCCURRING AT THIS TIME OWING IN PART TO
SIGNIFICANTLY LESS MSTR CONVERGENCE. THUS WL NOT ADD THIS COUNTY TO
THE WATCH AT THIS TIME...YET WL CONTINUE TO MONITOR. WL LOWER MAX
TEMPS OVER THE CWFA FOR THIS AFTN OWING TO COPIOUS MSTR/CLOUDS/RAIN.
WHEN CONSIDERING THE HIGH CAPE VALUES...AND TO A LESSER EXTENT
WEAK-MODERATE VERTICAL SHEAR...THUNDERSTORMS IN RESPONSE TO
THE ENHANCED MSTR CONVERGENCE OVR THE ERN CWFA/COASTAL WATERS MAY
GENERATE STORMS WITH BRIEF STRONG GUSTY WIND.

.CRP...FLASH FLOOD WATCH FOR TXZ230>234-240>247 THRU 400PM TODAY.

87
Hazardous weather outlook, Sep 18, 5:00 AM CST, 8 hours 35 minutes before
GMZ230-235-250-255-270-275-TXZ229>234-239>247-191100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
600 AM CDT THU SEP 18 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY.
HEAVY RAINFALL WILL BE POSSIBLE AND A FLASH FLOOD WATCH HAS BEEN
ISSUED FOR MOST OF SOUTH TEXAS.  1 TO 2 INCHES OF RAINFALL IS
POSSIBLE...WITH ISOLATED AMOUNTS OF 3 TO 4 INCHES.  THIS AMOUNT OF
RAINFALL ON SATURATED GROUNDS WILL CAUSE FLOODING.  THE INTENSITY
AND COVERAGE OF THE RAINFALL WILL DIMINISH TONIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A COLD FRONT WILL MOVE INTO SOUTH TEXAS FRIDAY PROVIDING A LINGERING
CHANCE OF SHOWERS AND THUNDERSTORMS. SCATTERED SHOWERS AND
THUNDERSTORMS WILL BE POSSIBLE ALONG A TROUGH OF LOW PRESSURE NEAR
THE COAST ON SATURDAY. THE CHANCES FOR SHOWERS AND THUNDERSTORMS
WILL INCREASE AGAIN BY SUNDAY AS TROPICAL MOISTURE INCREASES IN
ADVANCE OF THE NEXT COLD FRONT WHICH WILL MOVE INTO SOUTH TEXAS ON
MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

TR/TMT

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

6 flash flood. Local standard time, as filed.

Flash Flood, Bee

When
September 18, 1:35 PM CST to 3:30 PM CST
Where
Bee County, Central Portion
Reported by
LAW ENFORCEMENT
Coordinates
28.417, -97.741 (the zone’s center; the record gives no point)

Heavy rainfall fell across Central Bee county producing flash flooding along Hwy 59, 888 and 202 near Beeville.

Flash Flood, Refugio

When
September 18, 1:40 PM CST to 3:00 PM CST
Where
Refugio County, Refugio
Reported by
LAW ENFORCEMENT
Coordinates
28.322, -97.159 (the zone’s center; the record gives no point)

Heavy rainfall resulted in several streets flooded in the city of Refugio.

Flash Flood, Goliad

When
September 18, 1:40 PM CST to 3:30 PM CST
Where
Goliad County, North Central Portion
Reported by
LAW ENFORCEMENT
Coordinates
28.657, -97.426 (the zone’s center; the record gives no point)

Heavy rainfall across Goliad County produced flash flooding along Hwy 1726 and along Hwy 622.

Flash Flood, San Patricio

When
September 18, 3:20 PM CST to 5:30 PM CST
Where
San Patricio County, Aransas Pass
Reported by
LAW ENFORCEMENT
Coordinates
28.009, -97.518 (the zone’s center; the record gives no point)

Heavy rainfall produced widespread street flooding in Aransas Pass.

Flash Flood, Nueces

When
September 18, 3:32 PM CST to 6:00 PM CST
Where
Nueces County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
27.735, -97.516 (the zone’s center; the record gives no point)

Heavy rainfall produced widepread street flooding in Corpus Christi. Very heay rainfall fell in southern Nueces County in the city of Bishop. 4 to 5 inches of rainfall were reported in Bishop.

Flash Flood, Kleberg

When
September 18, 4:36 PM CST to 5:30 PM CST
Where
Kleberg County, Central Portion
Reported by
LAW ENFORCEMENT
Coordinates
27.427, -97.668 (the zone’s center; the record gives no point)

Flooding along FM 772 and East CR 1040.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Texas in 2003Every state in 2003This day in weather historyWarnings in Texas, September 2003

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5337725, 5337726, 5337727, 5337992, 5337993, 5337994.