Moist southerly surface winds this afternoon combined with an extension of upper level moisture originating from Tropical Depression Miriam in the Eastern Pacific. A surface trough along the Texas-New Mexico border and a jet streak aloft provided the lift necessary for scattered thunderstorm development by 1400 CST. As these storms moved east across the South Plains through the late afternoon and evening, they coalesced into a squall line that developed occasional bowing structures. One of these bows struck western and northern portions of the city of Lubbock toppling a brick wall at the Lubbock Christian University's baseball field. These winds also lofted small gravel and stones that shattered the windows of approximately 20 cars at Texas Tech University and also broke the windows of a nearby bus stop booth. As these storms swept off the Caprock, their overall intensity diminished. An exception to this occurred in southwest Cottle County where a narrow corridor of fierce winds developed just south of a decaying mesoscale convective vortex. Winds at a Texas Tech University West Texas mesonet station located ten miles west-southwest of Paducah were clocked as high as 96 mph within this downburst. Farther north, a slow-moving supercell developed in western Briscoe County and drifted southeast directly over Caprock Canyons State Park accompanied by torrential rain rates of three inches per hour. These rains deluged the park and produced flash flooding along a normally dry creek that drains into Lake Theo. The creek became swollen with several feet of water and proceeded to inundate a bridge causing damage to the asphalt road. Frequent lightning from this day's storms also caused several small grassfires throughout the region, but none of these resulted in any known damage.

Thunderstorm Wind in HALE, TEXAS
From 26-SEP-12 16:30:00 to 26-SEP-12 16:35:00 (CST-6)
Location: ABERNATHY MUNI ARPT
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 68 mph wind gust was measured by a Texas Tech University West Texas mesonet station near Abernathy at 1630 CST followed by a 67 mph gust at 1635 CST.

Thunderstorm Wind in LUBBOCK, TEXAS
From 26-SEP-12 16:50:00 to 26-SEP-12 17:40:00 (CST-6)
Location: DOUD
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A small bow echo with winds determined to be as high as 75 mph at times caused scattered damage from the western portions of Lubbock northeast to just north of Idalou. At Hays Field (located at Lubbock Christian University), the strongest winds toppled portions of a 15-foot tall center field brick wall. A short while later, approximately 20 vehicles at Texas Tech University lost their side windows from wind-blown gravel and small debris. Also, a nearby bus stop booth had five windows shattered from lofted debris. These winds also downed a light pole on Texas Tech's campus. As this storm continued moving east-northeast, high winds toppled a few vendor tents at the South Plains Fair. Fortunately, prompt warnings allowed attendees to seek appropriate shelter. Several instances of downed trees and power lines also accompanied this storm from the western sections of Lubbock to just north of Idalou where the storm decayed. Additionally, a house located southeast of Lubbock International Airport was struck by lightning; however, the extent of damage, if any, was not reported.

Thunderstorm Wind in KING, TEXAS
From 26-SEP-12 18:45:00 to 26-SEP-12 18:45:00 (CST-6)
Location: GUTHRIE 6666 ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 61 mph wind gust was measured by a Texas Tech University West Texas mesonet station near Guthrie.

Thunderstorm Wind in LUBBOCK, TEXAS
From 26-SEP-12 17:12:00 to 26-SEP-12 17:12:00 (CST-6)
Location: HECKVILLE
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A KAMC weather station near Idalou measured a 73 mph wind gust.

Flash Flood in BRISCOE, TEXAS
From 26-SEP-12 17:19:00 to 26-SEP-12 19:00:00 (CST-6)
Location: QUITAQUE
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey confirmed road damage from flash flooding along a bridge in Caprock Canyons State Park. The damage occurred about 2.5 miles north of the park's main entrance where a normally dry creek bed to Lake Theo swelled with several feet of water and inundated a bridge. Although small portions of the asphalt road along the bridge were washed out, the integrity of the bridge was not compromised. A substantial amount of debris (including large tree limbs and branches) accompanied the fast-moving floodwaters after nearly 1.5 inches of rain fell in 30 minutes.

Thunderstorm Wind in LUBBOCK, TEXAS
From 26-SEP-12 17:35:00 to 26-SEP-12 17:35:00 (CST-6)
Location: SLATON
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Department of Highways

Downburst winds estimated around 70 mph overturned a tractor trailer and injured its driver while traveling southeast on U.S. Highway 84.

Thunderstorm Wind in GARZA, TEXAS
From 26-SEP-12 17:02:00 to 26-SEP-12 17:02:00 (CST-6)
Location: SOUTHLAND
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A NWS COOP observer estimated 65 mph winds associated with a nearly stationary rotating thunderstorm ahead of a squall line. As the squall line's outflow interacted with the rotating updraft, tight low-level rotation ensued for a short period of time before the outflow undercut the storm.

Thunderstorm Wind in COTTLE, TEXAS
From 26-SEP-12 18:30:00 to 26-SEP-12 18:35:00 (CST-6)
Location: NARCISSO
Magnitude: 83.00 MG
Property damage: 0.20K
Crop damage: 0.00K
Reported by: Mesonet

Decaying thunderstorms located just south of a mesoscale convective vortex produced an intense downburst in extreme southwest Cottle County. A Texas Tech University West Texas Mesonet site located ten miles west-southwest of Paducah measured severe winds from 1725 CST to 1735 CST with a peak gust of 96 mph recorded at 1730 CST. Despite the ferocious winds, only one power pole was downed in the area. Although NWS Lubbock radar indicated only marginal storm intensities during this time, the high winds were deemed legitimate based on the fact that cable ties to the mesonet tower were snapped. Farther southeast, a NWS COOP observer about ten miles south of Paducah reported a couple large tree limbs had snapped and damaged a fence.

Thunderstorm Wind in HOCKLEY, TEXAS
From 26-SEP-12 15:43:00 to 26-SEP-12 15:43:00 (CST-6)
Location: ROUNDUP
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 66 mph wind gust was measured by a Texas Tech University West Texas mesonet station near Anton.

Thunderstorm Wind in LUBBOCK, TEXAS
From 26-SEP-12 16:00:00 to 26-SEP-12 16:00:00 (CST-6)
Location: REESE VLG
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 58 mph wind gust was measured by a Texas Tech University West Texas mesonet station at Reese Center.

Thunderstorm Wind in BRISCOE, TEXAS
From 26-SEP-12 16:10:00 to 26-SEP-12 16:10:00 (CST-6)
Location: SILVERTON
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 59 mph wind gust was measured by a Texas Tech University West Texas mesonet station near Silverton.