Severe thunderstorms developed across the western Texas Panhandle during the early evening hours and then moved across the south central Texas Panhandle. These severe storms produced large hail and damaging winds along with flash flooding. There were no reports of injuries or fatalities.

Hail in DEAF SMITH, TEXAS
From 20-AUG-12 16:28:00 to 20-AUG-12 16:30:00 (CST-6)
Location: HEREFORD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DEAF SMITH, TEXAS
From 20-AUG-12 16:40:00 to 20-AUG-12 16:42:00 (CST-6)
Location: HEREFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in POTTER, TEXAS
From 20-AUG-12 17:23:00 to 20-AUG-12 17:25:00 (CST-6)
Location: VALLE DE ORO
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in POTTER, TEXAS
From 20-AUG-12 17:10:00 to 20-AUG-12 17:12:00 (CST-6)
Location: VALLE DE ORO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in POTTER, TEXAS
From 20-AUG-12 18:32:00 to 20-AUG-12 18:33:00 (CST-6)
Location: AMARILLO
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in RANDALL, TEXAS
From 20-AUG-12 18:38:00 to 20-AUG-12 18:39:00 (CST-6)
Location: AMARILLO
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in POTTER, TEXAS
From 20-AUG-12 18:40:00 to 20-AUG-12 18:41:00 (CST-6)
Location: (AMA)AMARILLO INTL A
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in RANDALL, TEXAS
From 20-AUG-12 18:40:00 to 20-AUG-12 18:41:00 (CST-6)
Location: AMARILLO
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in RANDALL, TEXAS
From 20-AUG-12 18:44:00 to 20-AUG-12 18:45:00 (CST-6)
Location: LAKE TANGLEWOOD
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in POTTER, TEXAS
From 20-AUG-12 18:22:00 to 20-AUG-12 18:23:00 (CST-6)
Location: BUSHLAND
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in RANDALL, TEXAS
From 20-AUG-12 18:38:00 to 20-AUG-12 18:39:00 (CST-6)
Location: AMARILLO
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in HARTLEY, TEXAS
From 20-AUG-12 17:37:00 to 20-AUG-12 17:38:00 (CST-6)
Location: CHANNING
Magnitude: 61.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm wind gusts downed or snapped six power poles four miles north of Channing Texas in Hartley county. There were no reports of injuries or fatalities.

Thunderstorm Wind in OLDHAM, TEXAS
From 20-AUG-12 17:55:00 to 20-AUG-12 17:56:00 (CST-6)
Location: VEGA
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm wind gusts caused damage to the roof of a gas station and also overturned a tractor trailer. There were no reports of injuries or fatalities.

Thunderstorm Wind in RANDALL, TEXAS
From 20-AUG-12 18:40:00 to 20-AUG-12 18:41:00 (CST-6)
Location: LAKE TANGLEWOOD
Magnitude: 56.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts blew off the roof of a metal building near the Claude Highway (Farm to Market Road 1151) and Tanglewood Road. There were no injuries or fatalities.

Thunderstorm Wind in POTTER, TEXAS
From 20-AUG-12 18:35:00 to 20-AUG-12 18:36:00 (CST-6)
Location: AMARILLO
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm wind gusts caused significant tree damage with some big trees leaning and or downed in the Amarillo College area. There were no injuries or fatalities.

Flash Flood in POTTER, TEXAS
From 20-AUG-12 18:50:00 to 20-AUG-12 21:00:00 (CST-6)
Location: AMARILLO
Flood cause: Heavy Rain
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Very heavy rainfall from thunderstorms produced flash flooding across the Amarillo area. Flash flooding was reported on Western Street south of Interstate 40 and residential streets were reported flooded and impassable near downtown Amarillo, Texas in Potter County. Also, underpasses near Interstate 40 and South Grand Street were flooded. Flash flooding was reported at 27th Street east of Interstate 27 and roads were flooded near Medi Park on the west side of Amarillo. The Amarillo/Potter/Randall Office of Emergency Management reported numerous flooded intersections throughout Amarillo along with vehicles stranded and water rescues being conducted. There were no reports of injuries or fatalities.

Thunderstorm Wind in POTTER, TEXAS
From 20-AUG-12 18:40:00 to 20-AUG-12 18:41:00 (CST-6)
Location: (AMA)AMARILLO INTL A
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts caused damage to an open hangar door at the Rick Husband International Airport. There were no reports of injuries or fatalities.

Thunderstorm Wind in RANDALL, TEXAS
From 20-AUG-12 18:55:00 to 20-AUG-12 18:56:00 (CST-6)
Location: AMARILLO
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm wind gusts caused a power outage around the 45th Avenue and Western Street area. There were no injuries or fatalities.

Thunderstorm Wind in POTTER, TEXAS
From 20-AUG-12 18:58:00 to 20-AUG-12 18:59:00 (CST-6)
Location: AMARILLO
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm wind gusts blew down a large tree about ten feet tall and six inches in diameter in the backyard of a residence. There were no injuries or fatalities.

Thunderstorm Wind in POTTER, TEXAS
From 20-AUG-12 19:00:00 to 20-AUG-12 19:01:00 (CST-6)
Location: AMARILLO
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts blew a stop sign off of its post at 45th Avenue and Georgia Street. There were no injuries or fatalities.

Thunderstorm Wind in ARMSTRONG, TEXAS
From 20-AUG-12 19:32:00 to 20-AUG-12 19:33:00 (CST-6)
Location: CLAUDE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Armstrong County Emergency Manager estimated thunderstorm wind gusts just north of Claude, Texas, however there was no damage and no reports of injuries or fatalities.

Flash Flood in RANDALL, TEXAS
From 20-AUG-12 19:41:00 to 20-AUG-12 21:00:00 (CST-6)
Location: PALO DURO CANYON STATE PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Very heavy rainfall from thunderstorms caused flash flooding in the Palo Duro Canyon State Park in Randall County. Park Rangers reported that the water was three and a half to four feet over the first low water crossing in the park. The water was also reported to be six feet over the other low water crossings in the park. There was no damage reported and there were no injuries or fatalities.

Hail in POTTER, TEXAS
From 20-AUG-12 17:12:00 to 20-AUG-12 17:14:00 (CST-6)
Location: VALLE DE ORO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter