4 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. Tap one for its entry below.
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.
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, 4 hours 50 minutes earlier.
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 national radar mosaic for the moment the first event began.
4 thunderstorm wind. Local standard time, as filed.
Severe thunderstorm winds blew roofs off homes.
Severe thunderstorm winds caused widespread damage to trees, roofs, and power lines.
Severe thunderstorm winds caused widespread damage to trees, roofs from Llano eastward.
Trees were split and knocked over into homes by severe thunderstorm winds. An aircraft was flipped onto its top at the Burnet airport by the winds.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2001Every state in 2001This day in weather historyWarnings in Texas, May 2001
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: 5243283, 5243284, 5243285, 5243286.