Texas, 2001

Tornado and Hail in Texas, May 20, 2001

May 20, 2001 · NWS EWX · 6 events in 2 counties and zones

4 hail, 1 thunderstorm wind, 1 tornado, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. 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
$315,000
Crop damage
$300,000
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 May 20, 1:15 PM CST, 3 hours earlier.

Area forecast discussion, May 20, 1:15 PM CST, 3 hours before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
215 PM CDT SUN MAY 20 2001

AFTER A BRIEF STINT WITH SHOWERS AND THUNDERSTORMS TOMORROW...A COLD
FRONT WILL USHER IN COOLER AND MUCH DRIER AIR...WITH THE GULF OF
MEXICO FLOW BEING SHUT OFF FOR MOST OF THE WEEK.  THE EXTENDED HAS A
GOOD RETURN FLOW OF MOISTURE BY NEXT SUNDAY.

WE ARE POTENTIALLY VERY UNSTABLE ALOFT WITH THE LATEST GOES CAPE
INDEX SHOWING CAPES OF 3000-5000.  HOWEVER...WE ARE JUST NOW
CLEARING ACROSS THE EASTERN PORTIONS OF SOUTH CENTRAL TEXAS AND
VISUAL CLUES OF GOOD SUBSIDENCE OCCURRING (VISIBILITIES LOWERING IN
HAZE). WITH LITTLE IN WAY OF FOCUS OR POSITIVE DYNAMICS ALOFT...
WILL ONLY PLACE ISOLATED SHOWERS OR THUNDERSTORMS WEST TONIGHT...
WHERE DRY LINE SET UP WILL BE.

MODELS HAVE BEEN VERY CONSISTENT IN BRINGING IN A GOOD COLD FRONT
AROUND MIDDAY MONDAY...AND THIS CONTINUES THE CASE.  A BRIEF SHOT AT
SOME SHOWERS AND THUNDERSTORMS ALONG THE FRONT WITH GOOD LOW LEVEL
FORCING. THE TIME OF DAY PRECLUDES US FROM GOING ANY HIGHER THAN 30
PERCENT AT PRESENT.  SOME CYCLOGENESIS ALONG THE COASTLINE MONDAY
NIGHT WILL FORCE US TO CONTINUE WITH LOW POPS (MOSTLY LIGHT RAIN OR
SHOWERS) OVER THE SOUTH CENTRAL AND SOUTHEAST ZONES TOMORROW NIGHT.

MASSIVE VORTEX DEVELOPING ACROSS UPPER MIDWEST INTO THE NORTHEAST
U.S. BY MIDWEEK KEEPS AREA DRY AND A LITTLE COOLER THAN NORMAL.
SECONDARY WAVE PUSHES IN LATE THURSDAY WITH A FEW MORE CLOUDS AND A
REINFORCEMENT OF COOL AIR.   SOUTHERLY FLOW FINALLY RETURNS WITH A
VENGEANCE SUNDAY AS THE HIGH MOVES OFF INTO THE ATLANTIC WHILE A
LONGWAVE TROUGH PATTERN SETS UP OVER THE WESTERN U.S.

PRELIMINARY NUMBERS...
AUS 072/080/051/081 0310
DRT 068/089/057/085 1200
SAT 074/083/053/081 0320

.EWX...NONE.

02/19

The radar

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

Open the radar archive at this moment

Event by event

4 hail, 1 thunderstorm wind, 1 tornado. Local standard time, as filed.

Thunderstorm Wind, Atascosa

When
May 20, 4:15 PM CST to 4:25 PM CST
Where
Atascosa County, 5 mi W of Campbellton
Property damage
$50,000
Crop damage
$30,000
Reported by
NWS STORM SURVEY
Coordinates
28.750, -98.383

Severe thunderstorm winds blew the roof off several houses and blew down numerous trees.

Hail, Atascosa

When
May 20, 4:45 PM CST to 4:50 PM CST
Where
Atascosa County, Campbellton
Measured
1.75 in hail
Property damage
$30,000
Reported by
LAW ENFORCEMENT
Coordinates
28.750, -98.300

Hail, Wilson

When
May 20, 5:10 PM CST to 5:15 PM CST
Where
Wilson County, Dewees
Measured
1.75 in hail
Property damage
$20,000
Crop damage
$20,000
Reported by
EMERGENCY MANAGER
Coordinates
29.017, -98.183

Hail, Wilson

When
May 20, 5:10 PM CST to 5:20 PM CST
Where
Wilson County, 5 mi NE of Floresville
Measured
1.75 in hail
Property damage
$50,000
Crop damage
$50,000
Reported by
NWS STORM SURVEY
Coordinates
29.183, -98.100

The large hail damaged houses and dented car bodies, destroyed windshields and windows.

Hail, Wilson

When
May 20, 5:10 PM CST to 5:35 PM CST
Where
Wilson County, Stockdale
Measured
4 in hail
Property damage
$150,000
Crop damage
$200,000
Reported by
NWS STORM SURVEY
Coordinates
29.233, -97.950

Again, the very large hail damaged homes and vehicles and destroyed corn, hay and other crops in the area.

Tornado, Wilson

When
May 20, 5:15 PM CST to 5:16 PM CST
Where
Wilson County, 5 mi E of Floresville
Rating
F0
Path length
0.3 mi
Path width
30 yd
Property damage
$15,000
Reported by
NWS STORM SURVEY
Coordinates
29.133, -98.083

A very small and short-lived tornado twisted and knocked over a large tree and destroyed a small out-building in the middle of several outbuildings, then lifted and dissipated.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

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 historyThe tornado archive for Texas, 2001Warnings in Texas, May 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: 5243277, 5243278, 5243279, 5243280, 5243281, 5243282.