The deep upper low remained over the Four Corners region on April 17th while another  strong jet streak in the subtropical jet stream across northern Mexico moved into South Texas. The air mass became strongly unstable by the afternoon. Scattered thunderstorms occurred from late afternoon through the evening hours. Several thunderstorms became supercells and produced damaging winds and large hail. Several funnel clouds were reported, but no tornadoes were confirmed.

Hail in LA SALLE, TEXAS
From 17-APR-15 13:40:00 to 17-APR-15 13:40:00 (CST-6)
Location: POWERTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Quarter sized hail was reported in Fowlerton.

Thunderstorm Wind in SAN PATRICIO, TEXAS
From 17-APR-15 21:15:00 to 17-APR-15 21:15:00 (CST-6)
Location: PORTLAND
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter estimated wind speeds of 60 mph in Portland.

Hail in BEE, TEXAS
From 17-APR-15 17:38:00 to 17-APR-15 17:42:00 (CST-6)
Location: BEEVILLE
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Law Enforcement

Golf ball sized hail occurred on the southwest side of Beeville.

Hail in BEE, TEXAS
From 17-APR-15 17:46:00 to 17-APR-15 17:46:00 (CST-6)
Location: BEEVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Penny sized hail occurred near North Avenue E in Beeville.

Thunderstorm Wind in JIM WELLS, TEXAS
From 17-APR-15 19:34:00 to 17-APR-15 19:34:00 (CST-6)
Location: (ALI)ALICE INTL ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Alice International Airport ASOS measured a gust to 62 mph.

Funnel Cloud in DUVAL, TEXAS
From 17-APR-15 18:54:00 to 17-APR-15 18:59:00 (CST-6)
Location: SAN DIEGO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Storm chaser provided video showing a funnel cloud extending more than half way to the ground for several minutes as the storm passed just north of San Diego.

Hail in NUECES, TEXAS
From 17-APR-15 20:44:00 to 17-APR-15 20:44:00 (CST-6)
Location: CALALLEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Quarter sized hail occurred in Calallen.

Hail in SAN PATRICIO, TEXAS
From 17-APR-15 21:27:00 to 17-APR-15 21:29:00 (CST-6)
Location: INGLESIDE
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Law Enforcement

Sheriff's Office reported quarter sized hail just southeast of Gregory.

Thunderstorm Wind in MCMULLEN, TEXAS
From 17-APR-15 14:15:00 to 17-APR-15 14:15:00 (CST-6)
Location: TILDEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

McMullen County Sheriff Deputy estimated wind speeds to around 60 mph southwest of Tilden.

Hail in MCMULLEN, TEXAS
From 17-APR-15 14:27:00 to 17-APR-15 14:27:00 (CST-6)
Location: TILDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A FedEx driver reported quarter sized hail on Highway 72 4 miles west of Tilden.

Funnel Cloud in JIM WELLS, TEXAS
From 17-APR-15 19:33:00 to 17-APR-15 19:35:00 (CST-6)
Location: ALICE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported a funnel cloud just north of the WalMart in Alice on the northeast side of town.

Funnel Cloud in REFUGIO, TEXAS
From 17-APR-15 18:58:00 to 17-APR-15 19:01:00 (CST-6)
Location: REFUGIO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Refugio County Sheriff's Office reported a funnel cloud northwest of Refugio.

Thunderstorm Wind in LA SALLE, TEXAS
From 17-APR-15 13:22:00 to 17-APR-15 13:22:00 (CST-6)
Location: LOS ANGELES
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds snapped or uprooted trees near Los Angeles.

Thunderstorm Wind in BEE, TEXAS
From 17-APR-15 17:46:00 to 17-APR-15 17:50:00 (CST-6)
Location: BEEVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Power lines and trees were blown down around East Claire Street and North Jefferson Street. Many areas in Beeville were without power.

Thunderstorm Wind in BEE, TEXAS
From 17-APR-15 17:46:00 to 17-APR-15 17:50:00 (CST-6)
Location: BEEVILLE
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Multiple power poles were blown down near Avenue E in Beeville.

Thunderstorm Wind in LA SALLE, TEXAS
From 17-APR-15 12:50:00 to 17-APR-15 12:50:00 (CST-6)
Location: TUNA
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Large tree limbs were blown down at the Chaparral Wildlife Management Area.

Funnel Cloud in BEE, TEXAS
From 17-APR-15 18:36:00 to 17-APR-15 18:38:00 (CST-6)
Location: BLANCONIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Storm chaser reported a brief funnel cloud as the storm approached the Bee and Refugio county line.

Thunderstorm Wind in ARANSAS, TEXAS
From 17-APR-15 21:46:00 to 17-APR-15 21:50:00 (CST-6)
Location: ROCKPORT
Magnitude: 56.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power poles were blown down southwest of Rockport.