Thunderstorms developed in the warm sector ahead of a cold front. Some of these storms produced large hail, damaging winds, and heavy rain that led to flash flooding. There was one weak tornado.

Tornado in BASTROP, TEXAS
From 28-MAY-21 18:31:00 to 28-MAY-21 18:35:00 (CST-6)
Location: RED ROCK
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media passed along video of a small tornado from a resident that lived just south of Rockne.  The video showed a small tornado out ahead of a line of storms.  There was fairly widespread wind damage from the line of storms so finding an exact path of the tornado was difficult.  The path is estimated from the video as well as evidence from the resident that took the video.

Hail in LLANO, TEXAS
From 28-MAY-21 16:05:00 to 28-MAY-21 16:05:00 (CST-6)
Location: TOW
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm produced golf ball size hail between Tow and Bluffton.

Hail in TRAVIS, TEXAS
From 28-MAY-21 17:40:00 to 28-MAY-21 17:40:00 (CST-6)
Location: AUSTIN LAKEWAY ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BLANCO, TEXAS
From 28-MAY-21 18:15:00 to 28-MAY-21 18:15:00 (CST-6)
Location: HYE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A thunderstorm produced nickel to quarter size hail north of Hye.

Hail in KERR, TEXAS
From 28-MAY-21 18:51:00 to 28-MAY-21 18:51:00 (CST-6)
Location: KERRVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm produced quarter size hail in Kerrville.

Thunderstorm Wind in BURNET, TEXAS
From 28-MAY-21 17:00:00 to 28-MAY-21 17:00:00 (CST-6)
Location: GRANITE MTN
Magnitude: 70.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A thunderstorm produced wind gusts estimated at 80 mph that downed trees on FM 2147 outside Cottonwood Shores.

Thunderstorm Wind in TRAVIS, TEXAS
From 28-MAY-21 17:34:00 to 28-MAY-21 17:34:00 (CST-6)
Location: LAKE TRAVIS
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced wind gusts measured at 64 mph by a personal weather station near Thurman Bend Rd. on Lake Travis.

Thunderstorm Wind in TRAVIS, TEXAS
From 28-MAY-21 17:35:00 to 28-MAY-21 17:35:00 (CST-6)
Location: DODD CITY
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A thunderstorm produced wind gusts measured at 58 mph by a CWOP station at FM 2769 and Hill St. on Lake Travis.

Thunderstorm Wind in TRAVIS, TEXAS
From 28-MAY-21 17:38:00 to 28-MAY-21 17:38:00 (CST-6)
Location: FOUR PTS
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A thunderstorm produced wind gusts measured at 67 mph by a CWOP station near Villa Montana Way on Lake Travis.

Thunderstorm Wind in TRAVIS, TEXAS
From 28-MAY-21 18:11:00 to 28-MAY-21 18:11:00 (CST-6)
Location: AUSTIN-BERGSTROM ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A thunderstorm produced wind gusts measured at 52 kts. by the ASOS at Austin-Bergstrom International Airport.

Thunderstorm Wind in TRAVIS, TEXAS
From 28-MAY-21 18:14:00 to 28-MAY-21 18:14:00 (CST-6)
Location: FISKVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced wind gusts estimated at 60 mph at Rundberg Ln. and I-35 in northern Austin.

Thunderstorm Wind in BASTROP, TEXAS
From 28-MAY-21 18:35:00 to 28-MAY-21 18:35:00 (CST-6)
Location: RED ROCK
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A thunderstorm produced wind gusts estimated at 80 mph that tore the roof off the Red Rock General Store.

Thunderstorm Wind in FAYETTE, TEXAS
From 28-MAY-21 19:27:00 to 28-MAY-21 19:27:00 (CST-6)
Location: LA GRANGE ARPT
Magnitude: 70.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm produced wind gusts estimated at 80 mph that blew down a tree over the southbound lanes of Hwy 77 south of La Grange.

Thunderstorm Wind in FAYETTE, TEXAS
From 28-MAY-21 19:36:00 to 28-MAY-21 19:36:00 (CST-6)
Location: SCHULENBURG
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm produced wind gusts measured at 55 kts. by a Davis Weather station in Schulenburg.

Thunderstorm Wind in FAYETTE, TEXAS
From 28-MAY-21 20:00:00 to 28-MAY-21 20:00:00 (CST-6)
Location: JOINER
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm winds uprooted and damaged several large oak trees along Zapalac Rd. just west of Ellinger.

Thunderstorm Wind in BEXAR, TEXAS
From 28-MAY-21 20:11:00 to 28-MAY-21 20:11:00 (CST-6)
Location: LEON SPGS
Magnitude: 70.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced wind gusts estimated at 80 mph that knocked down large tree limbs and broke power poles in Leon Springs.

Thunderstorm Wind in BEXAR, TEXAS
From 28-MAY-21 20:32:00 to 28-MAY-21 20:32:00 (CST-6)
Location: (SAT)SAN ANTONIO INT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A thunderstorm produced wind gusts measured at 52 kts. by the ASOS at San Antonio International Airport.

Thunderstorm Wind in BEXAR, TEXAS
From 28-MAY-21 20:33:00 to 28-MAY-21 20:33:00 (CST-6)
Location: (SAT)SAN ANTONIO INT
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A thunderstorm produced wind gusts measured at 77 mph by the ASOS at San Antonio International Airport.

Thunderstorm Wind in BEXAR, TEXAS
From 28-MAY-21 20:35:00 to 28-MAY-21 20:35:00 (CST-6)
Location: ALAMO HGTS
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced wind gusts estimated at 60 mph broke tree limbs in the Olmos Park section of San Antonio.

Thunderstorm Wind in BEXAR, TEXAS
From 28-MAY-21 20:35:00 to 28-MAY-21 20:35:00 (CST-6)
Location: WETMORE
Magnitude: 61.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced wind gusts estimated at 70 mph that knocked down fences, tree limbs, and power lines in norther San Antonio.

Thunderstorm Wind in BEXAR, TEXAS
From 28-MAY-21 20:36:00 to 28-MAY-21 20:36:00 (CST-6)
Location: CEMENTVILLE
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced wind gusts estimated at 80 mph that knocked a large tree through a home near the intersection of Broadway and W. Fair Oaks Pl. in Alamo Heights.

Thunderstorm Wind in BEXAR, TEXAS
From 28-MAY-21 20:39:00 to 28-MAY-21 20:39:00 (CST-6)
Location: LONGHORN
Magnitude: 70.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced wind gusts estimated at 80 mph that snapped a large tree trunk in northeastern San Antonio.

Hail in VAL VERDE, TEXAS
From 29-MAY-21 02:30:00 to 29-MAY-21 02:30:00 (CST-6)
Location: COMSTOCK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A Border Patrol officer reported a thunderstorm produced quarter size hail near Comstock.

Flash Flood in BEXAR, TEXAS
From 28-MAY-21 21:10:00 to 28-MAY-21 23:00:00 (CST-6)
Location: ALAMO HGTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorms produced heavy rain that led to flash flooding. Cars were stranded in flood waters from Olmos Creek in northern San Antonio.

Flash Flood in BEXAR, TEXAS
From 28-MAY-21 21:30:00 to 28-MAY-21 23:00:00 (CST-6)
Location: WETMORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department performed a water rescue at Old O'Connor Rd. and Lookout Rd. in northeastern San Antonio.