There was an upper level ridge over the region.  A dryline was present along the higher terrain of West Texas along a surface trough with very moist conditions to the east of the dryline.  An upper level disturbance was approaching the area, and there was good instability and wind shear present.  These conditions allowed for thunderstorms to develop with large hail and strong wind.

Hail in WINKLER, TEXAS
From 21-MAY-16 16:56:00 to 21-MAY-16 17:06:00 (CST-6)
Location: WINK
Magnitude: 0.88 
Reported by: Broadcast Media

Thunderstorm Wind in WINKLER, TEXAS
From 21-MAY-16 16:57:00 to 21-MAY-16 16:57:00 (CST-6)
Location: WINK
Magnitude: 57.00 MG
Reported by: ASOS

A thunderstorm moved across Winkler County and produced a 66 mph wind gust at the Wink ASOS.

Hail in GAINES, TEXAS
From 21-MAY-16 18:54:00 to 21-MAY-16 18:59:00 (CST-6)
Location: SEMINOLE
Magnitude: 1.75 
Reported by: Law Enforcement

Hail in GAINES, TEXAS
From 21-MAY-16 18:54:00 to 21-MAY-16 18:59:00 (CST-6)
Location: SEMINOLE
Magnitude: 2.50 
Property damage: 15.00K
Reported by: Fire Department/Rescue

A thunderstorm moved across Gaines County and produced tennis ball sized hail in Seminole.  There were numerous windows broken and the siding was ripped off of houses.  The cost of damage is a very rough estimate.

Thunderstorm Wind in GAINES, TEXAS
From 21-MAY-16 19:00:00 to 21-MAY-16 19:01:00 (CST-6)
Location: SEAGRAVES
Magnitude: 56.00 MG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Mesonet

A thunderstorm moved across Gaines County and produced a 65 mph wind gust at the Seagraves Mesonet site.  A storm survey was conducted and there were trees uprooted and a tin building was ripped apart.  The cost of damage is a very rough estimate.

Hail in GAINES, TEXAS
From 21-MAY-16 19:07:00 to 21-MAY-16 19:08:00 (CST-6)
Location: SEMINOLE
Magnitude: 1.75 
Property damage: 5.00K
Reported by: Emergency Manager

A thunderstorm moved across Gaines County and produced golf ball sized hail in Seminole.  Numerous house and auto windows were broken due to the hail.  The cost of damage is a very rough estimate.

Thunderstorm Wind in GAINES, TEXAS
From 21-MAY-16 19:10:00 to 21-MAY-16 19:10:00 (CST-6)
Location: SEAGRAVES
Magnitude: 53.00 MG
Reported by: Emergency Manager

A thunderstorm moved across Gaines County and produced a 61 mph wind gust south of Seagraves.

Hail in GAINES, TEXAS
From 21-MAY-16 19:17:00 to 21-MAY-16 19:22:00 (CST-6)
Location: SEAGRAVES
Magnitude: 2.00 
Reported by: Emergency Manager

Thunderstorm Wind in GAINES, TEXAS
From 21-MAY-16 19:20:00 to 21-MAY-16 19:21:00 (CST-6)
Location: SEAGRAVES
Magnitude: 65.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A thunderstorm moved across Gaines County and produced wind damage east of Seagraves.  Several irrigation pivots were overturned.  The cost of damage is a very rough estimate.

Hail in WINKLER, TEXAS
From 21-MAY-16 17:13:00 to 21-MAY-16 17:18:00 (CST-6)
Location: KERMIT
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in WINKLER, TEXAS
From 21-MAY-16 17:24:00 to 21-MAY-16 17:29:00 (CST-6)
Location: KERMIT
Magnitude: 1.75 
Reported by: Social Media

Thunderstorm Wind in GAINES, TEXAS
From 21-MAY-16 19:07:00 to 21-MAY-16 19:08:00 (CST-6)
Location: SEMINOLE ARPT
Magnitude: 87.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A thunderstorm moved across Gaines County and produced wind damage in and near Seminole.  A storm survey was conducted of the damage and it was determined that the winds got up to 100 mph.  Along with damage to trees and metal buildings, there were power poles that were blown down on US 180.  The cost of damage is a very rough estimate.

Thunderstorm Wind in GAINES, TEXAS
From 21-MAY-16 19:00:00 to 21-MAY-16 19:00:00 (CST-6)
Location: SEMINOLE
Magnitude: 54.00 MG
Reported by: Mesonet

A thunderstorm moved across Gaines County and produced a 62 mph wind gust near Seminole.