An upper trough rotating across the Rio Grande resulted in widespread shower and thunderstorm development across South Texas during the evening hours of May 18th and continued into May 19th. Redevelopment along a nearly stationary outflow boundary resulted in training of thunderstorms across portions of the Victoria Crossroads and Kleberg County. By the time the event ended, over 13 inches of rain had fallen at Kingsville with 8-10 inches of rain across Victoria and Port Lavaca. Flooding resulted in 50 homes being affected in Victoria County; 12 of those homes suffered minor damage. Over $15 million in damages to public property occurred across Victoria and Calhoun County from this event per the Texas Division of Emergency Management.

Thunderstorm Wind in CALHOUN, TEXAS
From 18-MAY-21 22:30:00 to 18-MAY-21 22:30:00 (CST-6)
Location: KAMEY
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

A microburst resulted in localized damage at a residence outside of Port Lavaca, overturning a travel trailer, uprooting an air conditioning unit, damaging an exterior power meter to the home, and producing tree damage.

Flash Flood in NUECES, TEXAS
From 19-MAY-21 11:46:00 to 19-MAY-21 11:46:00 (CST-6)
Location: (CRP)CORPUS CHRISTI
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Water entered businesses in northwest Corpus Christi.

Flash Flood in KLEBERG, TEXAS
From 19-MAY-21 07:24:00 to 19-MAY-21 07:24:00 (CST-6)
Location: (NQI)NAS KINGSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Vehicles were stranded with street closures in Kingsville.

Flash Flood in LIVE OAK, TEXAS
From 19-MAY-21 10:00:00 to 19-MAY-21 10:00:00 (CST-6)
Location: MIKESKA
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A bridge was washed out on County Road 365 near Farm-to-Market 799.

Flash Flood in SAN PATRICIO, TEXAS
From 19-MAY-21 12:14:00 to 19-MAY-21 12:14:00 (CST-6)
Location: PORTLAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Water over 1 feet deep reported at Trinity Drive and Frio Drive in Portland.

Flash Flood in NUECES, TEXAS
From 19-MAY-21 12:15:00 to 19-MAY-21 12:15:00 (CST-6)
Location: CORPUS CHRISTI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Ayers Street and Tarlton Street flooded due to heavy rain.

Flash Flood in SAN PATRICIO, TEXAS
From 19-MAY-21 06:45:00 to 19-MAY-21 06:45:00 (CST-6)
Location: PORTLAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Streets flooded in Portland.

Flash Flood in SAN PATRICIO, TEXAS
From 19-MAY-21 07:06:00 to 19-MAY-21 07:06:00 (CST-6)
Location: ODEM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flooded roads reported near Odem Elementary School.

Flash Flood in ARANSAS, TEXAS
From 19-MAY-21 12:43:00 to 19-MAY-21 12:43:00 (CST-6)
Location: ROCKPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Street closure reported due to heavy rain.

Flash Flood in KLEBERG, TEXAS
From 19-MAY-21 14:00:00 to 19-MAY-21 14:00:00 (CST-6)
Location: VATTMANNVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The intersection of Farm-to-Market 628 and Farm-to-Market 1546 flooded as water went out of banks from the Arana Creek across Farm-to-Market 1546.

Flash Flood in VICTORIA, TEXAS
From 19-MAY-21 14:18:00 to 19-MAY-21 14:18:00 (CST-6)
Location: PLACEDO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Farm-to-Market 616 flooded near the underpass of Highway 87.

Flash Flood in VICTORIA, TEXAS
From 18-MAY-21 21:24:00 to 18-MAY-21 21:24:00 (CST-6)
Location: (VCT)VICTORIA RGNL A
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Victoria emergency management reported several streets flooded in Victoria with a few cars stranded.

Flash Flood in CALHOUN, TEXAS
From 19-MAY-21 00:40:00 to 19-MAY-21 00:40:00 (CST-6)
Location: PORT LAVACA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain and flooding resulted in numerous road closures, stranded vehicles, and water rising into homes across multiple locations in the northern part of Calhoun County.

Flash Flood in KLEBERG, TEXAS
From 19-MAY-21 07:43:00 to 19-MAY-21 07:43:00 (CST-6)
Location: KINGSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The intersection of 14th Street and Santa Gertrudis Avenue was flooded in Kingsville.

Flash Flood in NUECES, TEXAS
From 19-MAY-21 12:15:00 to 19-MAY-21 12:15:00 (CST-6)
Location: CORPUS CHRISTI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Baldwin and Osage Streets flooded.

Flash Flood in SAN PATRICIO, TEXAS
From 19-MAY-21 07:58:00 to 19-MAY-21 07:58:00 (CST-6)
Location: WEST SINTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Farm-to-Market Road 630 and County Road 2015 west of Sinton was closed due to flooding.

Flash Flood in ARANSAS, TEXAS
From 19-MAY-21 08:04:00 to 19-MAY-21 08:04:00 (CST-6)
Location: ROCKPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Streets flooded in Aransas County near Bypass 35 with motorists unable to cross several roadways.

Flash Flood in NUECES, TEXAS
From 19-MAY-21 08:33:00 to 19-MAY-21 08:33:00 (CST-6)
Location: BISHOP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

FM 666 north of Bishop was closed due to flooding.

Flash Flood in KLEBERG, TEXAS
From 19-MAY-21 09:48:00 to 19-MAY-21 09:48:00 (CST-6)
Location: KINGSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Multiple roads flooded in and around Kingsville.

Flash Flood in VICTORIA, TEXAS
From 19-MAY-21 02:10:00 to 19-MAY-21 02:10:00 (CST-6)
Location: BLOOMINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported multiple roads closed at Bloomington due to flooding.

Flash Flood in NUECES, TEXAS
From 19-MAY-21 06:31:00 to 19-MAY-21 06:31:00 (CST-6)
Location: CALALLEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The Calallen High School parking lot flooded.

Flash Flood in KLEBERG, TEXAS
From 19-MAY-21 08:30:00 to 19-MAY-21 08:30:00 (CST-6)
Location: (NQI)NAS KINGSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Highway 77 between Bishop and Kingsville flooded.

Flash Flood in NUECES, TEXAS
From 19-MAY-21 11:40:00 to 19-MAY-21 11:40:00 (CST-6)
Location: CORPUS CHRISTI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several roads flooded and closed in Corpus Christi, including: Interstate 37 at Carbon Plant, State Highway 286 at Holly Road, Rodd Field Road from South Padre Island Drive to Holly Road.

Flash Flood in WEBB, TEXAS
From 19-MAY-21 06:44:00 to 19-MAY-21 06:44:00 (CST-6)
Location: (LRD)LAREDO INTL ARP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous road closures due to flooding were reported in Laredo, including the 2300 block of Jacaman Road, Las Cruces Drive, and areas east of Mines Road.