A frontal boundary moved out of the Hill Country as the upper level disturbance moved into northwest Texas and western Oklahoma early on the 14th. As the frontal boundary moved into an unstable air mass over South Texas, thunderstorms developed over the Rio Grande plains west of Cotulla. The area of thunderstorms organized into another mesoscale convective system that moved east across South Texas during the early morning hours. The squall line produced widespread tree damage in the Coastal Bend. This caused power outages from Kingsville to Corpus Christi with 35 thousand customers losing power at the height of the storm. Flash flooding also occurred from Corpus Christi to Rockport.

Thunderstorm Wind in NUECES, TEXAS
From 14-APR-15 06:00:00 to 14-APR-15 06:00:00 (CST-6)
Location: CABANISS NAF
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Winds toppled over a gas station island canopy cover.

Flash Flood in NUECES, TEXAS
From 14-APR-15 05:55:00 to 14-APR-15 06:25:00 (CST-6)
Location: CALALLEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several intersections were flooded in the Calallen to near Robstown area.

Flash Flood in NUECES, TEXAS
From 14-APR-15 06:00:00 to 14-APR-15 06:25:00 (CST-6)
Location: LA ROSE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

County Road 52 was flooded all the way to the intersection with County Road 73.

Thunderstorm Wind in SAN PATRICIO, TEXAS
From 14-APR-15 06:10:00 to 14-APR-15 06:10:00 (CST-6)
Location: INGLESIDE
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

AWOS site at McCampbell-Porter Airport in Ingleside measured a gust to 59 mph.

Flash Flood in NUECES, TEXAS
From 14-APR-15 06:10:00 to 14-APR-15 06:30:00 (CST-6)
Location: NUECEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Many roads were flooded across the northern portions of Corpus Christi, stretching from near Tuloso along Interstate 37 into the downtown area.

Flash Flood in SAN PATRICIO, TEXAS
From 14-APR-15 06:00:00 to 14-APR-15 06:50:00 (CST-6)
Location: PORTLAND
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous intersections were flooded in Portland. Some vehicles were stranded.
Cars stalled at the intersection of Highway 181 and Buddy Ganem Drive.

Hail in LA SALLE, TEXAS
From 13-APR-15 23:50:00 to 14-APR-15 00:00:00 (CST-6)
Location: COTULLA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Picture received via social media of at least quarter sized hail in Cotulla. Time estimated by radar.

Hail in DUVAL, TEXAS
From 14-APR-15 04:25:00 to 14-APR-15 04:30:00 (CST-6)
Location: BENAVIDES
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter reported nickel sized hail in Benavides.

Thunderstorm Wind in NUECES, TEXAS
From 14-APR-15 06:18:00 to 14-APR-15 06:36:00 (CST-6)
Location: FLOUR BLUFF JCT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

TCOON site at Packery Channel measured gusts between 58 and 62 mph for around 20 minutes.

Flash Flood in ARANSAS, TEXAS
From 14-APR-15 06:15:00 to 14-APR-15 07:00:00 (CST-6)
Location: ROCKPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous roads and intersections flooded around Rockport.

Thunderstorm Wind in NUECES, TEXAS
From 14-APR-15 06:30:00 to 14-APR-15 06:30:00 (CST-6)
Location: BOB HALL PIER
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

NOS site at Bob Hall Pier measured a gust to 59 mph.

Thunderstorm Wind in DUVAL, TEXAS
From 14-APR-15 04:25:00 to 14-APR-15 04:25:00 (CST-6)
Location: BENAVIDES
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree limbs were blown down in Benavides. Spotter estimated the wind speeds at around 60 mph.

Thunderstorm Wind in NUECES, TEXAS
From 14-APR-15 05:33:00 to 14-APR-15 05:36:00 (CST-6)
Location: DRISCOLL
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey team determined that straight line winds of around 65 mph caused damage in Driscoll. A roof was removed from a barn and several outbuildings were damaged.

Thunderstorm Wind in BEE, TEXAS
From 14-APR-15 04:50:00 to 14-APR-15 04:55:00 (CST-6)
Location: TYNAN
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Winds blew power poles down along a long stretch of Highway 359 between Tynan and Skidmore. Power poles and power lines were on the west bound lanes causing a road closure.

Flash Flood in SAN PATRICIO, TEXAS
From 14-APR-15 06:00:00 to 14-APR-15 07:30:00 (CST-6)
Location: PORTLAND HUNT ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Low water crossing on County Road 2226 west of Portland flooded with vehicles cut off.

Thunderstorm Wind in NUECES, TEXAS
From 14-APR-15 05:52:00 to 14-APR-15 06:15:00 (CST-6)
Location: CORPUS CHRISTI
Magnitude: 55.00 EG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread tree damage occurred across the city of Corpus Christi. Damage started southwest of the downtown Bayfront and continued southeast across the area around Ray High School to south of Oso Beach Municipal Golf Course and then to Flour Bluff. This caused widespread power outages due to downed power lines also.