A wake low developed after a left moving supercell moved across the southern Texas Panhandle during the evening hours of the 20th.  This wake low caused an extremely tight surface pressure gradient that allowed several non-thunderstorm related high wind gusts across the southern Texas Panhandle. These gusts ranged from 56 mph to 72 mph, and lasted from 730 PM CST to 10:50 PM CST.  One such wind gust knocked out a transmission pole which caused near 7,600 Xcel Energy customers to be without power for several hours in Amarillo (Potter and Randall County), Canyon (Randall County), and Bushland (Potter County). The winds created low visibilities on Interstate 40 which was eventually closed from Farm-to-Market Road 1912 (Potter County) to Mile marker 88 in Carson County. An estimated 60 mph gust caused power poles to be blown down on Farm-to-Market Road 2186 and Hope Road in Amarillo (Randall County) at 8:00 PM CST. An estimated 65mph wind gust caused trees to be blown onto roads in the San Jacinto neighborhood in Amarillo (Potter County) at 9:00 PM CST. An estimated 67 mph wind gust around 9:15 PM CST blew a shed into an adjacent yard on the southwest side of Amarillo (Randall County). At 10:30 PM CST, and estimated 62 mph wind gusts blew a carport over in Groom (Carson County). Another wind gust in Carson County at 10:45PM CST caused a train derailment and a rollover accident involving a semi-tractor trailer at 10:50 PM CST.  The gust which caused the train derailment was estimated to be 81 mph by a National Weather Service survey team, and caused 42 cars of the train to be overturned. No injuries or hazardous material release was reported in association to the train derailment, and Burlington Northern Santa Fe (BNSF) Railway crews worked through the night and into the following morning to erect the overturned cars.  The gust which caused the train derailment continued to move southeast across the county and caused a rollover accident 16 miles southeast of Panhandle (Carson County) at 10:50 PM CST. By this point the gust had diminished to 60 mph. The driver of the semi-tractor trailer was injured due to the accident and was taken to Northwest Texas Hospital in Amarillo (Potter County). After having the injuries treated, the driver was released from the hospital. By 11 PM CST, the wake low had diminished which prevented from any further high wind gusts from occurring.
The following is a listing of the highest wind gust per location across the southern Texas Panhandle by county.
Randall:2 northeast of Lake Tanglewood 64 mph; 4 north-northwest of Lake Tanglewood 66 mph; 6 southwest of Amarillo 70 mph;  9 southwest of Amarillo 60 mph; 5 miles west-southwest of Amarillo 58 mph; 5 miles south-southwest of Amarillo 72 mph; 6 south-southwest of Amarillo 67 mph.
Potter: 6 miles east-northeast of Amarillo 61 mph; 5 miles west of Amarillo 67 mph; 2 miles west-northwest of Amarillo 65 mph; 1 miles west of Amarillo 62 mph; 6 miles west-northwest of Amarillo 62 mph; 6 miles west of Amarillo 63 mph; 3 miles northwest of Amarillo 65 mph.
Deaf Smith: 5 miles east-northeast of Hereford 69 mph.
Oldham: 2 miles east-southeast Wildorado 58 mph.
Carson: in Groom 62 mph; in Panhandle 81 mph; 16 miles southeast of Panhandle 60 mph.

High Wind in RANDALL, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

KVII Schoolnet site at River Falls Airport remported 58 mph gusts.

High Wind in RANDALL, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The West Texas Mesonet site at Amarillo 7SSE reported a 62 mph gust.

High Wind in RANDALL, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee reported 70 mph gust at residence 6 SW Amarillo.

High Wind in RANDALL, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The West Texas Mesonet at Amarillo 7SSE reported 66 mph gust.

High Wind in RANDALL, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The KVII Schoolnet site at Amarillo High School reproted 58 mph gust.

High Wind in RANDALL, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The KVII Schoolnet site at Duke Electric reproted 72 mph gust.

High Wind in RANDALL, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The KVII Schoolnet site at River Falls Airport reported 64 mph gust.

High Wind in POTTER, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Amarillo ASOS reported 61 mph gust.

High Wind in POTTER, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The KVII Schoolnet site at the Discovery Center reported a 67 mph gust.

High Wind in POTTER, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trees blown over onto neighborhood road. Estimated based on damage and near by reports.

High Wind in POTTER, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The KVII schoolnet site at De Zavala Middle School reported a 62 mph gust.

High Wind in POTTER, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The KVII schoolnet site at Filmore reported a 58 mph gust.

High Wind in POTTER, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The KVII schoolnet site at Lifestar Operations reported a 63 mph gust.

High Wind in POTTER, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The KVII schoolnet site at Carver Elementary reported a 65 mph gust.

High Wind in CARSON, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A train redailed from a estimated 81 mph gust.

High Wind in CARSON, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A semi-tractor trailer rolled-over due to a 60 mph gust and caused one injury.

High Wind in RANDALL, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee reported that their shed was blown down by 67 mph gust.

High Wind in CARSON, TEXAS
From 20-JUN-13 19:30:00 to 20-JUN-13 22:50:00 (CST-6)
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public in Groom reported a carport was blown down. Gust estimated at 62 mph from damage and near by reports.