Texas, 2002

Flash Flooding in Texas, July 1, 2002

July 1, 2002 · NWS EWX · 7 events in 7 counties and zones

Heavy rainfall began falling before midnight on the first from Bandera County across Bexar County and into Wilson County. Additional showers and thunderstorms formed between Carrizo Springs, Crystal City, Pearsall and Cotulla.

Where it happened

Every event with a place to put it; 7 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
7

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 rainfall began falling before midnight on the first from Bandera County across Bexar County and into Wilson County. Additional showers and thunderstorms formed between Carrizo Springs, Crystal City, Pearsall and Cotulla. With soils already soaked from the heavy rainfall of June 29 and 30, flash flooding developed very early in the morning and continued past noon for most counties.

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 1, 2:00 AM CST, 30 minutes earlier.

Area forecast discussion, Jul 1, 2:00 AM CST, 30 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
300 AM CDT MON JUL 1 2002

WILL REISSUE FLASH FLOOD WATCH FOR SOUTH CENTRAL TEXAS INCLUDING THE
HILL COUNTRY AREA FOR TODAY AND TONIGHT. UPPER AIR TROUGH AXIS NEAR
A OUN...MTY LINE WILL REMAIN NEARLY STATIONARY TODAY THROUGH
TUESDAY. UPPER DISTURBANCES ALONG TROUGH AXIS HELPING DEVELOP
CONVECTION ALONG LOWER COAST AND MOVING NORTH TOWARD SOUTH CENTRAL
TEXAS.  AVN HINTS THIS DISTURBANCE WILL MOVE INTO SOUTH CENTRAL
TEXAS TONIGHT WITH FURTHER DEVELOPMENT LIKELY.  MOST AREAS EAST OF
I35 ARE SATURATED SO RAPID RUNOFF EXPECTED.  TRAINING OF CONVECTION
ALSO A THREAT.

AS UPPER RIDGING GRADUALLY BUILDS IN FROM THE EAST AND UPPER TROUGH
MIGRATES WEST...PROBABILITIES SHOULD BEGIN TO FALL RAPIDLY AND BY
THE 4TH OF JULY...ONLY WIDELY SCATTERED MAINLY AFTERNOON AND EARLY
EVENING SHOWERS OR THUNDERSTORMS ARE FORECAST BY THEN.  LITTLE
DYNAMICS BY NEXT WEEKEND WITH ONLY ISOLATEDS A POSSIBILITY.

PRELIMINARY NUMBERS
AUS 88/71/87/72 8463
DRT 92/73/89/73 3343
SAT 88/72/86/73 8673

.EWX...FLASH FLOOD WATCH TODAY AND TONIGHT SOUTH CENTRAL TEXAS AND
THE TEXAS HILL COUNTRY.

02/06/JB

The radar

The Austin/San Antonio radar (KEWX), 112 km away, was scanning. The volume nearest the first event began at 08:29 UTC.

Open the radar archive at this moment

Event by event

7 flash flood. Local standard time, as filed.

Flash Flood, Gillespie

When
July 1, 2:30 AM CST to 5:00 PM CST
Where
Gillespie County, Southeast Portion
Reported by
EMERGENCY MANAGER
Coordinates
30.318, -98.946 (the zone’s center; the record gives no point)

General 3 to 4 inch totals fell across the county, with isolated amounts of up to 7 inches in the eastern part of the county. Flash flooding at this time affected low water crossings. Damage was limited to rural roads.

Flash Flood, Bexar

When
July 1, 4:00 AM CST to 1:00 PM CST
Where
Bexar County, Countywide
Reported by
EMERGENCY MANAGER
Coordinates
29.449, -98.520 (the zone’s center; the record gives no point)

General 3 to 4 inch totals were reported over Bexar County, with isolated amounts of up to 5 inches across the northern part of the county. Flash flooding was reported across most low water crossings in the county.

Flash Flood, Guadalupe

When
July 1, 6:30 AM CST to 8:00 AM CST
Where
Guadalupe County, West Portion
Reported by
EMERGENCY MANAGER
Coordinates
29.583, -97.949 (the zone’s center; the record gives no point)

General 2 to 3 inch totals were reported with isolated totals to 5 inches in the western part of the county. Low water crossings filled quickly with minor damage reported.

Flash Flood, Atascosa

When
July 1, 7:15 AM CST to 12:30 PM CST
Where
Atascosa County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
28.894, -98.527 (the zone’s center; the record gives no point)

General 3 to 4 inch totals were indicated with isolated amounts of 5 inches in the north central part of the county. Little or no damage was indicated.

Flash Flood, Frio

When
July 1, 8:15 AM CST to 12:30 PM CST
Where
Frio County, Southwest Portion
Reported by
LAW ENFORCEMENT
Coordinates
28.868, -99.108 (the zone’s center; the record gives no point)

General 3 to 4 inch totals fell across the county. The greatest amounts were in the southwest part of the county, where 7 inch totals were recorded. Low water crossings were filled very quickly and damage was reported to some roads.

Flash Flood, Zavala

When
July 1, 11:30 AM CST to 1:30 PM CST
Where
Zavala County, Southeast Portion
Reported by
LAW ENFORCEMENT
Coordinates
28.866, -99.761 (the zone’s center; the record gives no point)

General 2 to 3 inch totals fell across the county with isolated totals of up to 5 inches in the southeast part of the county. Flash flooding was reported over low water crossings with minor damage to roads.

Flash Flood, Dimmit

When
July 1, 11:45 AM CST to 1:00 PM CST
Where
Dimmit County, Northeast Portion
Reported by
LAW ENFORCEMENT
Coordinates
28.423, -99.757 (the zone’s center; the record gives no point)

General 3 in amounts fell over the northern half of the county, with up to 5 inches in the extreme northeast along the Zavala and LaSalle County borders.

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 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: 5306766, 5306767, 5306768, 5306769, 5306770, 5311462, 5311463.