An upper level low over the Big Bend region combined with a surface low over South Texas to generate thunderstorms. The airmass in which these storms developed was very moist with precipitable water values above the 90th percentile of the long term record. Some of these storms produced locally heavy rain that led to flash flooding.

Flash Flood in BEXAR, TEXAS
From 01-MAY-21 12:05:00 to 01-MAY-21 15:15:00 (CST-6)
Location: (SSF)STINSON FLD SAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorms produced heavy rain that flooded the intersection of S. Flores St. and SW. Military Dr. in southern San Antonio. There were vehicles stranded in the water.

Flash Flood in BEXAR, TEXAS
From 01-MAY-21 12:06:00 to 01-MAY-21 15:15:00 (CST-6)
Location: SAN ANTONIO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorms produced heavy rain that flooded I-35 under Nogalitos St. stranding vehicles in the water.

Flash Flood in BEXAR, TEXAS
From 01-MAY-21 12:16:00 to 01-MAY-21 15:15:00 (CST-6)
Location: SAN ANTONIO
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 reported several water rescues around the city.

Flash Flood in UVALDE, TEXAS
From 01-MAY-21 12:40:00 to 01-MAY-21 14:15:00 (CST-6)
Location: SABINAL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms produced heavy rain that led to flash flooding. TXDOT reported RR 187 was closed along the Sabinal River in southeastern Uvalde County.

Flash Flood in BEXAR, TEXAS
From 01-MAY-21 12:41:00 to 01-MAY-21 15:15:00 (CST-6)
Location: SCHEMERSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. Several low water crossings across eastern Bexar County were flooded with one to two feet of water.

Flash Flood in UVALDE, TEXAS
From 01-MAY-21 12:45:00 to 01-MAY-21 14:15:00 (CST-6)
Location: UVALDE GARNER ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms produced heavy rain that led to flash flooding. TXDOT reported FM 140 was flooded southeast of Uvalde.

Flash Flood in UVALDE, TEXAS
From 01-MAY-21 12:58:00 to 01-MAY-21 14:15:00 (CST-6)
Location: KNIPPA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms produced heavy rain that led to flash flooding. TXDOT reported low water crossings were flooded along FM 1049 around Knippa.

Flash Flood in BEXAR, TEXAS
From 01-MAY-21 13:15:00 to 01-MAY-21 15:15:00 (CST-6)
Location: ADKINS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. A low water crossing in Sayers on Macaway Rd. near Rakowitz Rd. was flooded with three feet of water.

Flash Flood in COMAL, TEXAS
From 01-MAY-21 13:20:00 to 01-MAY-21 15:30:00 (CST-6)
Location: NEW BRAUNFELS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. A low water crossing was flooded on Hueco Springs Loop Rd. near Elm Creek Rd. in New Braunfels.

Flash Flood in MEDINA, TEXAS
From 01-MAY-21 13:35:00 to 01-MAY-21 14:15:00 (CST-6)
Location: (HDO)HONDO MUNI ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorms produced heavy rain that led to flash flooding. Parker Creek went out of its banks flooding the intersection of CR 422 and CR 425 northeast of D'Hanis.

Flash Flood in CALDWELL, TEXAS
From 01-MAY-21 13:58:00 to 01-MAY-21 16:30:00 (CST-6)
Location: NIEDERWALD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. Several roads were flooded across Caldwell County.

Flash Flood in HAYS, TEXAS
From 01-MAY-21 14:08:00 to 01-MAY-21 16:30:00 (CST-6)
Location: KYLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. Several roads across Hays County were flooded.

Flash Flood in TRAVIS, TEXAS
From 01-MAY-21 14:10:00 to 01-MAY-21 17:00:00 (CST-6)
Location: BLUFF SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. A low water crossing was flooded on Old San Antonio Rd. near Manchaca.

Flash Flood in TRAVIS, TEXAS
From 01-MAY-21 14:15:00 to 01-MAY-21 17:00:00 (CST-6)
Location: OAK HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms produced heavy rain that led to flash flooding. Williamson Creek left its banks flooding a road in Oak Hill.

Flash Flood in TRAVIS, TEXAS
From 01-MAY-21 14:30:00 to 01-MAY-21 17:00:00 (CST-6)
Location: FOUR PTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms produced heavy rain that led to flash flooding. Several low water crossings were flooded along Spicewood Springs Rd. in northwestern Austin.

Flash Flood in CALDWELL, TEXAS
From 01-MAY-21 14:45:00 to 01-MAY-21 16:30:00 (CST-6)
Location: BROWNSBORO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms produced heavy rain that led to flash flooding. FM 1322 was flooded by Plum Creek northeast of Luling.

Flash Flood in TRAVIS, TEXAS
From 01-MAY-21 14:50:00 to 01-MAY-21 17:00:00 (CST-6)
Location: OAK HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms produced heavy rain that led to flash flooding. Williamson Creek left its banks and flooded a low water crossing near Joe Tanner Ln. and McCarty Ln. in Oak Hill.

Flash Flood in TRAVIS, TEXAS
From 01-MAY-21 15:35:00 to 01-MAY-21 17:00:00 (CST-6)
Location: CELE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. Several low water crossings were flooded along Cameron Rd. near Cele.

Flash Flood in WILLIAMSON, TEXAS
From 01-MAY-21 15:50:00 to 01-MAY-21 18:15:00 (CST-6)
Location: WHITE STONE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. Several roads were flooded near Peggy Garner Park to the north and east of New Hope Dr.

Flash Flood in BASTROP, TEXAS
From 01-MAY-21 15:59:00 to 01-MAY-21 17:00:00 (CST-6)
Location: ELGIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. The intersection of FM 1704 and Arbuckle Rd. in Elgin was flooded.

Thunderstorm Wind in MAVERICK, TEXAS
From 01-MAY-21 07:16:00 to 01-MAY-21 07:16:00 (CST-6)
Location: EAGLE PASS
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm produced wind gusts estimated at 70 mph that knocked down power poles near the intersection of Cleveland St. and Jefferson St. in Eagle Pass.

Flash Flood in BEXAR, TEXAS
From 01-MAY-21 11:48:00 to 01-MAY-21 15:15:00 (CST-6)
Location: MACDONA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain that led to flash flooding. One to two feet of water covered a low water crossing on Grosenbacher Rd. north of Hwy 90 near Potranca Creek on the west side of San Antonio.

Flash Flood in BEXAR, TEXAS
From 01-MAY-21 12:00:00 to 01-MAY-21 15:15:00 (CST-6)
Location: LEON VLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorms produced heavy rain that flooded a low water crossing along Bar-J Rd. west of Leon Valley.