Texas, 2003

Flash Flooding in Texas, July 15 to 16, 2003

July 15 to 16, 2003 · NWS EWX · 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

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$175,000
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 Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Jul 15, 2:30 PM CST, 3 hours 30 minutes earlier.

Area forecast discussion, Jul 15, 2:30 PM CST, 3 hours 30 minutes before
FXUS64 KEWX 151221 RRA
AFDSAT

SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
330 PM CDT TUE JUL 15 2003

WILL ISSUE A FLASH FLOOD WATCH FOR THE ENTIRE SOUTH CENTRAL TEXAS
AREA TONIGHT. HURRICANE CLAUDETTE HAS SPED UP THIS AFTERNOON
SO CORE RAINS LATE TONIGHT SHULD NOT BE A PROBLEM IN OUR AREA.  THE
ONLY ENCHANCEMENT SHOULD BE ALONG THE ESCARPMENT TONIGHT.
CLAUDETTES CORE SHOULD MOVE INTO MEXICO LATE TONIGHT WITH DECREASING
RAINS FROM EAST TO WEST. WERE GOING OUT WITH 2 TO 4 INCH AMOUNTS
AREAWIDE
TONIGHT WITH SOME ENHANCEMENT ALONG THE ESCARPMENT.

AFTER CLAUDETTE PASSES...THINGS HSOULD SETTLE DOWN FOR A COUPLE OF
DAYS...BUT RESIDUAL MOISTURE WILL BE ENOUGH FOR SCATTERED SHOWERS
AND A FEW THUNDERSTORMS IN DAYTIME HEATING.

PRELIMS...
AUS 070/088 073/092 072 54341
DRT 073/085 073/093 074 89852
SAT 071/089 071/091 074 98541

.EWX...HIGH WIND WARNING THIS AFTERNOON AND TONIGHT FOR
KARNES...DEWITT AND LAVACA COUNTIES.
...FLASH FLOOD WATCH FOR ENTIRE SOUTH CENTRAL TEXAS AREA INCLUDING
THE TEXAS HILL COUNTRY.
...WIND ADVISORY FOR THE REMAINDER OF SOUTH CENTRAL TEXAS TONIGHT
OUTSIDE OF THE HIGH WIND WARNING AREA.

02/19

In the hours before

Local storm report, Jul 15, 2:25 PM CST, 3 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
325 PM CDT TUE JUL 15 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0300 PM    CUERO                     TX   WIND DAMAGE
07/15/03   DEWITT                         STRUCTURAL DAMAGE TO MANY
                                          HOMES, POWER LINES DOWN
                                          REPORTED BY LAW
                                          ENFORCEMENT

PM
Special weather statement, Jul 15, 5:04 PM CST, 56 minutes before
TXZ171>173-183>194-202>209-217>225-228-160030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
604 PM CDT TUE JUL 15 2003

...URBAN AND SMALL STREAM FLOOD ADVISORY UNTIL 715 PM FOR KARNES
   COUNTY...
...FLASH FLOOD WATCH IN EFFECT UNTIL NOON WEDNESDAY FOR ALL OF
   SOUTH CENTRAL TEXAS AND THE HILL COUNTY...
...TORNADO WATCH IN EFFECT UNTIL 10 PM FOR ATASCOSA... KARNES
   WILSON... DEWITT... GONZALES AND LAVACA COUNTIES...
...HIGH WIND WARNING IN EFFECT TONIGHT FOR ATASCOSA... DEWITT
   KARNES... LAVACA AND WILSON COUNTIES...

TROPICAL STORM CLAUDETTE IS NOW CENTERED BETWEEN GEORGE WEST AND
BEEVILLE MOVING WEST AT 10 TO 15 MPH.  THE HEAVIEST RAINS OVERNIGHT
WILL OCCUR NEAR THE CENTER OF THE STORM AS IT TRACKS WESTWARD ACROSS
SOUTHERN ATASCOSA...FRIO...ZAVALA...DIMMIT AND MAVERICK COUNTIES.

A FLASH FLOOD WATCH REMAINS EFFECT OVERNIGHT AS THE OUTER CONVECTIVE
BANDS WILL PRODUCE LOCALLY HEAVY RAINFALL AWAY FROM THE CENTER.
RAINFALL AMOUNTS WILL AVERAGE 2 TO 4 INCHES ACROSS ALL OF SOUTH
CENTRAL TEXAS AND THE HILL COUNTRY. HIGHER TOTALS OF 3 TO 5 INCHES
ARE POSSIBLE CLOSER TO THE CENTER OF THE STORM TRACK.

CAMPERS...HIKERS...AND THOSE WITH INTERESTS ALONG RIVERS AND
STREAMS...AS WELL AS THOSE IN LOW LYING AREAS SHOULD PREPARE FOR A
HEAVY RAIN EVENT.  SOME SOILS REMAIN MOIST FROM RAINS OF THE PAST
COUPLE OF WEEKS...AND RUNOFF COULD BECOME RAPID.

PERSONS IN SOUTH CENTRAL TEXAS AND THE HILL COUNTRY ARE ADVISED TO
MONITOR THIS DANGEROUS WEATHER SITUATION.

The radar

The Austin/San Antonio radar (KEWX), 90 km away, was scanning. The volume nearest the first event began at 00:03 UTC.

Open the radar archive at this moment

Event by event

6 flash flood. Local standard time, as filed.

Flash Flood, Karnes

When
July 15, 6:00 PM CST to July 16, 12:30 AM CST
Where
Karnes County, Countywide
Property damage
$50,000
Reported by
LAW ENFORCEMENT
Coordinates
28.906, -97.859 (the zone’s center; the record gives no point)

Heavy rainfall associated with Claudette produced general 1 to 2 inch amounts with isolated totals between 5 and 6 inches over Karnes County. Flash flooding developed over the county during the evening and ended near midnight.

Flash Flood, De Witt

When
July 15, 6:30 PM CST to 10:00 PM CST
Where
De Witt County, Countywide
Property damage
$50,000
Reported by
LAW ENFORCEMENT
Coordinates
29.082, -97.357 (the zone’s center; the record gives no point)

Heavy rain began falling in DeWitt County in the late afternoon, and by early evening the county had received general 1 to 2 inch rainfall with isolated 3 inch amounts. At that time, flash flooding began over the county's low water crossings. Rainfall continued through the evening, with the final amounts from Claudette of 2 to 3 inches generally and isolated totals of 6 inches.

Flash Flood, Atascosa

When
July 15, 7:00 PM CST to July 16, 12:30 AM CST
Where
Atascosa County, Countywide
Property damage
$50,000
Reported by
LAW ENFORCEMENT
Coordinates
28.894, -98.527 (the zone’s center; the record gives no point)

Claudette produced heavy rain over Atascosa County in the late afternoon and early evening, with general accumulations of 1 to 2 inches and isolated totals over the southern part of the county of up to 6 inches.

Flash Flood, Wilson

When
July 15, 9:00 PM CST to 11:00 PM CST
Where
Wilson County, South Portion
Property damage
$10,000
Reported by
LAW ENFORCEMENT
Coordinates
29.174, -98.087 (the zone’s center; the record gives no point)

Rainfall from Claudette produced general 1 to 2 inch rainfall during the evening over the County, with isolated to 4 inches in the south part of the county. Brief flash flooding was reported.

Flash Flood, Frio

When
July 15, 10:30 PM CST to July 16, 12:30 AM CST
Where
Frio County, Countywide
Property damage
$5,000
Reported by
LAW ENFORCEMENT
Coordinates
28.868, -99.108 (the zone’s center; the record gives no point)

General 1 to 2 inch rainfall was produced by Claudette over Frio County, with isolated totals of up to 4 inches. Brief flash flooding occurred just before midnight.

Flash Flood, Bexar

When
July 15, 10:30 PM CST to July 16, 12:30 AM CST
Where
Bexar County, Countywide
Property damage
$10,000
Reported by
LAW ENFORCEMENT
Coordinates
29.449, -98.520 (the zone’s center; the record gives no point)

Heavy rainfall fell over much of Bexar County, with general amounts of 1 to 2 inches. Isolated totals of up to 5 inches were reported over the south portion of the county. Flash flooding occurred just prior to midnight.

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, July 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: 5376108, 5376109, 5376110, 5376111, 5376112, 5376404.