Texas, 2001

Flash Flood in Texas, September 2, 2001

September 2, 2001 · NWS EWX · 1 event in 1 county or zone

Scattered showers and thunderstorms formed across eastern Bexar County and western Guadalupe County in the early morning hours and moved slowly southward. Shortly before sunrise, they became nearly stationary over northeast Wilson County.

Where it happened

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  • 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
$80,000
Crop damage
None recorded
Events
1

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.

Scattered showers and thunderstorms formed across eastern Bexar County and western Guadalupe County in the early morning hours and moved slowly southward. Shortly before sunrise, they became nearly stationary over northeast Wilson County. General rainfall over Wilson County were less than an inch, but totals of up to 6 inches were reported along and northeast of US 87. Flash flooding occurred on several low water crossings.

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 Sep 2, 1:43 AM CST, 4 hours 2 minutes earlier.

Area forecast discussion, Sep 2, 1:43 AM CST, 4 hours 2 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
243 AM CDT SUN SEP 2 2001

SHORT-WAVE TROUGH MOVING AWAY LEAVING SHEAR-AXIS IN IT PLACE FOR
TODAY.  SURFACE PATTERN RATHER JUMBLED ACROSS CWA...ALTHOUGH TROUGH
FROM SOUTHERN ROCKIES TO NORTHERN MEXICO MAKES FOR A WEAK SOUTHERLY
FLOW.  PWS RANGE FROM 1.7 WEST TO 2.2 EAST WITH MODELS SHOWING A
GENERAL DECREASING TREND...HOWEVER WILL BACKOFF SOMEWHAT ON THIS
AFTER LOOK AT WATER VAPOR IMAGERY.  POSITION OF SHEAR AXIS AND HIGHER
PWS WILL GOVERN POPS FOR TODAY AND TONIGHT WITH SLIGHT SOUTHEAST TO
ALMOST NONE NORTHWEST.  THICKNESSES AND BOUNDARY LAYER TEMPERATURES
RECOVER AND SOIL MOISTURE DECREASES JUST A TAD...GUIDANCE
TEMPERATURES LOOK REASONABLE AND GO CLOSE WITH EXCEPTIONS BEING MAV
LOWS FOR AUS AND CATEGORY WARMER FOR DRT HIGHS.

MONDAY THROUGH TUESDAY...MID LEVEL SHORT-WAVE CURRENTLY NEAR FOUR
CORNERS...REMNANT MOISTURE FROM FLOSSIE WILL DROP SOUTHEAST ACROSS
CWA.  THIS DEPICTED CONSISTENTLY ON ETA WHILE OTHER MODELS MINIMIZE
OR MISS ENTIRELY.  ETA SEEMS TO HANDLING QPF BETTER LATELY AND WILL
FOLLOW.  EXPECT A CLUSTER OF SHOWERS/THUNDERSTORMS TO MOVE INTO THE
HILL COUNTRY DURING THE AFTERNOON BECOMING SCATTERED DURING THE
NIGHTTIME HOURS.  SHORT-WAVE EASES ACROSS CWA ON TUESDAY WITH CHANCE
POPS EAST TO SLIGHT CHANCE WEST.  FORECAST TEMPERATURES ABOUT THE
SAME AS ABOVE...ALTHOUGH RAIN COULD CAUSE SOME HILL COUNTRY HIGHS TO
BE MUCH LOWER.

WEDNESDAY THROUGH SATURDAY...SHORT-WAVE SHEARS APART IN SAME AXIS AS
TODAY.  COULD BE SOME SHORT-WAVES DROPPING SOUTH ACROSS CWA AS SOME
MODELS SHOW WITH LOW POPS BEING MAINTAINED AS CURRENTLY INDICATED.

.PRELIMS...
AUS 092 069 092 069 090 2-233
DRT 098 074 098 073 093 00232
SAT 094 072 094 072 090 2-233

.EWX...NONE.

04/06/JB

The radar

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

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Wilson

When
September 2, 5:45 AM CST to 7:30 AM CST
Where
Wilson County, North Portion
Property damage
$80,000
Reported by
LAW ENFORCEMENT
Coordinates
29.174, -98.087 (the zone’s center; the record gives no point)

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 2001Every state in 2001This day in weather historyWarnings in Texas, September 2001

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: 5266138.