Texas, 2002

Flash Flooding and Flood in Texas, July 3 to 6, 2002

July 3 to 6, 2002 · NWS EWX · 15 events in 15 counties and zones

Heavy rain developed again just before midnight of July 3 over much of South Central Texas along and west of the I-35 corridor. The repeated heavy rainfall produced general 3 to 4 inch rains over most of the counties from the Hill Country southward to US90.

Where it happened

Every event with a place to put it; 15 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
15

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 happened

The episode as NWS EWX wrote it up.

Heavy rain developed again just before midnight of July 3 over much of South Central Texas along and west of the I-35 corridor. The repeated heavy rainfall produced general 3 to 4 inch rains over most of the counties from the Hill Country southward to US90. Flash flooding began in the early morning hours and continued generally until the late morning. Most low water crossings in the multi-county area were reported to be flooded and road closures were widespread.

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 3, 1:10 AM CST, 1 hour 20 minutes earlier.

Area forecast discussion, Jul 3, 1:10 AM CST, 1 hour 20 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
210 AM CDT WED JUL 3 2002

SHOWERS AND THUNDERSTORMS DEVELOPING AGAIN THIS MORNING NEAR THE
700MB TROUGH AXIS.  SINCE THE ATMOSPHERIC FLOW HAS CHANGED LITTLE
OVER THE PAST 2 DAYS, WILL KEEP HIGH POPS AGAIN TODAY WITH FLASH
FLOOD WATCH EXTENDED THROUGH TONIGHT.  THE MID LEVEL LOW CENTER IS
PROGGED TO LIFT NORTH THROUGH THE PANHANDLE TONIGHT, IN RESPONSE TO
THE NEXT APPROACHING UPPER LOW MOVING ACROSS THE SOUTHWEST U.S.,
RESULTING IN A WEAKER TROUGH NEAR THE RIO GRANDE. OUR PRECIPITABLE
WATER VALUES REMAIN AT OR ABOVE 1.6 THROUGH THE 4TH, SO WILL LOOK
FOR THE 700 TROF AXIS AS FOCUS FOR AFTERNOON SHOWERS AND
THUNDERSTORMS.  THE GOOD DEEP SOUTHERLY FLOW WILL INSURE HEAVY
RAINFALL AMOUNTS WITH THE THUNDERSTORMS.   BUT ALL IN ALL THE AREAL
COVERAGE OF SHOWERS AND THUNDERSTORMS WILL DROP THURSDAY AND FRIDAY
AS THE BETTER DYNAMICS SHIFT FARTHER AWAY FROM US.  FOR THE WEEKEND,
THE UPPER HIGH OVER THE CENTRAL U.S. NOSES BACK INTO TEXAS AS
ANOTHER LOW  OVER THE SOUTHEAST U.S. BREAKS FROM THE MAIN TROUGH AND
DRIFT WEST.  PRECIPITABLE WATER VALUES BARELY 1.6 FOR THE WEEKEND.
SO WILL SHAVE POPS BACK, EXPECTING ACTIVITY ONLY WITH THE SEABREEZE
BOUNDARY IN THE AFTERNOON AND EARLY EVENING HOURS ACROSS SOUTHERN
MOST COUNTIES.

PRELIMS...
AUS 85 73 88 73 5432
DRT 85 75 87 75 8664
SAT 85 74 89 74 6542

.EWX...FLASH FLOOD WATCH FOR THE ENTIRE CWA THROUGH TONIGHT.

The radar

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

Open the radar archive at this moment

Event by event

14 flash flood, 1 flood. Local standard time, as filed.

Flash Flood, Frio

When
July 3, 2:30 AM CST to 5:00 AM CST
Where
Frio County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
28.868, -99.108 (the zone’s center; the record gives no point)

Additional 2 inch rain totals over the county with isolated amounts of up to 4 inches in the western part of the county caused flash flooding to redevelop and continue through the early morning hours.

Flash Flood, Atascosa

When
July 3, 3:00 AM CST to 5:00 AM CST
Where
Atascosa County, South Portion
Reported by
LAW ENFORCEMENT
Coordinates
28.894, -98.527 (the zone’s center; the record gives no point)

General 3 to 4 inch rainfall over the southern part of Atascosa County caused flash flooding for the early morning hours.

Flash Flood, Blanco

When
July 3, 3:00 AM CST to 5:00 AM CST
Where
Blanco County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
30.266, -98.400 (the zone’s center; the record gives no point)

Additional 1 to 2 inch totals countywide with isolated amounts of up to 4 inches produced brief flash flooding in the early morning hours over the county.

Flash Flood, Comal

When
July 3, 3:00 AM CST to 6:30 AM CST
Where
Comal County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
29.808, -98.278 (the zone’s center; the record gives no point)

General 4 to 6 inch totals with isolated amounts of up to 8 inches caused a very rapid resumption of flash flooding across the entire county. Considerable damage was indicated to county roads and bridges. Road closures were widespread through the early morning.

Flash Flood, Kerr

When
July 3, 3:00 AM CST to 5:00 AM CST
Where
Kerr County, East Portion
Reported by
LAW ENFORCEMENT
Coordinates
30.062, -99.350 (the zone’s center; the record gives no point)

General 4 to 6 inch totals with isolated amounts of up to 8 inches over the east part of the county caused devastating flash flooding. More than 100 homes suffered flood damage in Kerrville. Some were knocked off their slabs and carried downstream by floodwaters. Most roads in the eastern part of Kerr County were closed due to flooding in the early morning, with many closed for the remainder of the day due to damage.

Flash Flood, Real

When
July 3, 3:00 AM CST to 12:00 PM CST
Where
Real County, South Portion
Reported by
LAW ENFORCEMENT
Coordinates
29.832, -99.822 (the zone’s center; the record gives no point)

General 3 to 4 inch totals with isolated totals of 7 inches over the southern part of Real County caused very dangerous flash flooding over this flood-prone area. Campers were stranded in their camps along the Frio River from southern Real County into northern Uvalde County and were unable to escape until that afternoon. Widespread damage was reported to roads and bridges over the south half of the county.

Flash Flood, Medina

When
July 3, 3:30 AM CST to 5:00 AM CST
Where
Medina County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
29.356, -99.110 (the zone’s center; the record gives no point)

General 3 inch rain totals fell countywide, with as much as 7 inches in some locations. Flash flooding continued to be a problem through the early morning hours.

Flash Flood, Kendall

When
July 3, 4:00 AM CST to 9:00 AM CST
Where
Kendall County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
29.945, -98.712 (the zone’s center; the record gives no point)

General 5 to 7 inch totals over the county, with isolated amounts as high as 12 inches, caused widespread flash flooding through the mid morning period over Kendall County. Damage was becoming widespread to roads and bridges and travel was very hazardous.

Flash Flood, Uvalde

When
July 3, 4:00 AM CST to 3:00 PM CST
Where
Uvalde County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
29.357, -99.762 (the zone’s center; the record gives no point)

General 4 to 6 inch totals fell in Uvalde County, causing widespread flash flooding. In addition, totals of up to 10 inches over the northern part of the county caused devastating flooding and trapped scores of campers and vacationers along the Frio River, who could not be rescued until afternoon.

Flash Flood, Gillespie

When
July 3, 4:30 AM CST to 9:00 AM CST
Where
Gillespie County, South Portion
Reported by
LAW ENFORCEMENT
Coordinates
30.318, -98.946 (the zone’s center; the record gives no point)

Additional rainfall of 2 to 3 inches over the south part of the county, with isolated amount of 5 inches, caused widespread, dangerous flash flooding to redevelop. Roads and bridge sustained damage, with numerous closures due to flooding through the mid morning and due to damage through the remainder of the day.

Flash Flood, Hays

When
July 3, 5:00 AM CST to 9:00 AM CST
Where
Hays County, West Portion
Reported by
EMERGENCY MANAGER
Coordinates
30.058, -98.031 (the zone’s center; the record gives no point)

The western part of Hays County received between 3 and 4 inches of rain, with some locations getting up to 5 inches. Flash flooding developed very quickly across this part of the county in the early morning hours and continued until mid morning.

Flash Flood, Travis

When
July 3, 6:00 AM CST to 9:00 AM CST
Where
Travis County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
30.335, -97.782 (the zone’s center; the record gives no point)

General 2 to 3 inch rain totals over the county, with isolated amounts of up to 4 inches in the south and west parts of the county, caused flash flooding over the entire area. The flash flooding continued from around sunrise to the mid morning. By the following day, flow into Lake Travis will bring it to its full elevation of 681 feet above Mean Sea Level.

Flash Flood, Burnet

When
July 3, 8:00 AM CST to 12:00 PM CST
Where
Burnet County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
30.788, -98.182 (the zone’s center; the record gives no point)

General 2 to 3 inch totals over Burnet County, along with isolated amounts of up to 4 inches, redeveloped flash flooding through the morning hours. Several county roads were closed due to flooding, with considerable damage reported.

Flood, Bexar

When
July 3, 8:24 AM CST to July 6, 9:32 AM CST
Where
Bexar forecast zone
Reported by
OTHER FEDERAL AGENCY
Coordinates
29.449, -98.520 (the zone’s center; the record gives no point)

The Guadalupe River crested at Spring Branch at 43.75 feet on July 3 at 1115CST, where flood stage is 30.0 feet.

Flash Flood, Williamson

When
July 3, 8:30 AM CST to 12:30 PM CST
Where
Williamson County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
30.648, -97.601 (the zone’s center; the record gives no point)

General 2 to 3 inch rains over Williamson County in the early morning hours caused flash flooding to redevelop. Isolated rain totals of up to 4 inches were received across the county and the flooding continued until just past noon.

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.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

More

Every storm in Texas in 2002Every state in 2002This day in weather historyWarnings in Texas, July 2002

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: 5311864, 5311865, 5311866, 5311867, 5311868, 5311938, 5311939, 5311940, 5311941, 5311942, 5311943, 5311944, 5311945, 5311946, 5312021.