Scattered supercell thunderstorms developed on the afternoon of the 28th and persisted through the evening producing several severe storms despite weak background forcing. Strong instability developed while the atmosphere became uncapped which allowed these supercell thunderstorms to develop. A slow moving storm near Vigo Park produced a brief tornado over an open field. More widespread thunderstorms evolved late in the evening while tracking from west to east over much of the South Plains and Rolling Plains. In Lubbock, a tree hit by lightning fell on a vehicle. These widespread slow moving storms produced extensive flash flooding especially over Lubbock County. Several roads were closed due to flooding with numerous stranded vehicles. After the cluster of thunderstorms moved east of Lubbock, a heat burst was observed at Reese Center (Lubbock County) within a stratiform region. A peak wind gust of 67 mph was observed with this heat burst as well as a 15 degree temperature increase.

Thunderstorm Wind in YOAKUM, TEXAS
From 28-MAY-23 17:48:00 to 28-MAY-23 18:14:00 (CST-6)
Location: DENVER CITY
Magnitude: 69.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas mesonet site near Denver City measured severe wind gusts from 1748 CST through 1814 CST. A peak wind gust of 79 mph was measured at 1758 CST.

Thunderstorm Wind in TERRY, TEXAS
From 28-MAY-23 19:12:00 to 28-MAY-23 19:12:00 (CST-6)
Location: BROWNFIELD
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas mesonet near Brownfield measured a severe wind gust of 58 mph.

Flash Flood in LUBBOCK, TEXAS
From 28-MAY-23 20:00:00 to 28-MAY-23 23:00:00 (CST-6)
Location: BROADVIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous reports were received of flooded roads in the city of Lubbock and Lubbock County. Several roads were impassable and as a result were closed due to water over the roadway. Some vehicles became stranded in high waters.

Flood in TERRY, TEXAS
From 28-MAY-23 19:30:00 to 28-MAY-23 21:30:00 (CST-6)
Location: NEEDMORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement in Terry County reported water over the roadway on US Highway 385 between county roads 210 and 230.

Tornado in SWISHER, TEXAS
From 28-MAY-23 16:09:00 to 28-MAY-23 16:10:00 (CST-6)
Location: VIGO PARK
Tornado F-scale: EFU
Reported by: Social Media

A video shared on social media showed a brief tornado southwest of Vigo Park in an open field. No damage was known to have occurred.

Hail in SWISHER, TEXAS
From 28-MAY-23 17:04:00 to 28-MAY-23 17:04:00 (CST-6)
Location: VIGO PARK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The Silverton Volunteer Fire Department reported hail ranging in size from quarters to golf balls southwest of Vigo Park.

Thunderstorm Wind in LUBBOCK, TEXAS
From 28-MAY-23 19:38:00 to 28-MAY-23 19:44:00 (CST-6)
Location: WOLFFORTH
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas mesonet site near Wolfforth measured severe wind gusts from 1938 CST through 1944 CST. A peak wind gust of 64 mph was measured at 1944 CST.

Lightning in LUBBOCK, TEXAS
From 28-MAY-23 19:50:00 to 28-MAY-23 19:50:00 (CST-6)
Location: LUBBOCK
Property damage: 10.00K
Reported by: Public

Local broadcast media relayed photographs of a tree that fell on a car from a lightning strike.

Flash Flood in YOAKUM, TEXAS
From 28-MAY-23 19:30:00 to 28-MAY-23 21:30:00 (CST-6)
Location: DENVER CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A slow moving thunderstorm over southern Yoakum County created flash flooding along Texas State Highway 83 west of Denver City.

Flash Flood in MOTLEY, TEXAS
From 28-MAY-23 22:00:00 to 29-MAY-23 00:00:00 (CST-6)
Location: ROARING SPGS BUZZ AR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A slow moving thunderstorm moved over Motley County creating flash flooding in and around Matador. The Motley County sheriff's office reported water over the roadway on US  Highway 70/62 in Matador.

High Wind in LUBBOCK, TEXAS
From 28-MAY-23 21:00:00 to 28-MAY-23 21:01:00 (CST-6)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas mesonet site near Reese Center measured severe wind gusts from 2100 CST through 2101 CST due to a heat burst. A peak wind gust of 67 mph was measured at 2100 CST.