Two main supercells developed under moderate to strong instability, shear around 30 kt, steep mid-level lapse rates and divergence in the upper levels. Low-level
jet also developed after sunset to have storms continue into the evening hours. Northern supercell across northern TX and southern OK Panhandle produce hail up to quarters and wind gusts above 60 MPH. Southern supercell across east central TX Panhandle produced up to baseball sized hail and and wind gusts up to 60 MPH.

Hail in GRAY, TEXAS
From 27-MAY-18 20:20:00 to 27-MAY-18 20:20:00 (CST-6)
Location: PAMPA
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Facebook report.

Hail in GRAY, TEXAS
From 27-MAY-18 20:22:00 to 27-MAY-18 20:22:00 (CST-6)
Location: PAMPA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Local Official

Local official south of Pampa reporting golf ball sized hail.

Hail in GRAY, TEXAS
From 27-MAY-18 20:25:00 to 27-MAY-18 20:25:00 (CST-6)
Location: PAMPA
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tennis ball hail.

Hail in GRAY, TEXAS
From 27-MAY-18 20:26:00 to 27-MAY-18 20:26:00 (CST-6)
Location: PAMPA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in GRAY, TEXAS
From 27-MAY-18 20:00:00 to 27-MAY-18 20:00:00 (CST-6)
Location: PAMPA
Magnitude: 51.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Deputy reported transformers were blowing up around him off highway 60 southwest of Pampa, with very strong winds.

Thunderstorm Wind in CARSON, TEXAS
From 27-MAY-18 19:33:00 to 27-MAY-18 19:33:00 (CST-6)
Location: SKELLYTOWN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

In addition to wind, golf ball hail was reported.

Thunderstorm Wind in CARSON, TEXAS
From 27-MAY-18 19:36:00 to 27-MAY-18 19:36:00 (CST-6)
Location: SKELLYTOWN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Reports of quarter sized hail and strong outflow winds from storm.

Thunderstorm Wind in GRAY, TEXAS
From 27-MAY-18 20:06:00 to 27-MAY-18 20:06:00 (CST-6)
Location: KINGS MILL
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Potential rear flank downdraft from the storm.

Thunderstorm Wind in GRAY, TEXAS
From 27-MAY-18 20:47:00 to 27-MAY-18 20:47:00 (CST-6)
Location: LEFORS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Reported by law enforcement.

Flood in CARSON, TEXAS
From 27-MAY-18 19:10:00 to 27-MAY-18 19:10:00 (CST-6)
Location: SKELLYTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rainfall producing localized street flooding.

Flood in CARSON, TEXAS
From 27-MAY-18 19:17:00 to 27-MAY-18 20:17:00 (CST-6)
Location: SKELLYTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Street flooding reported.

Flood in GRAY, TEXAS
From 27-MAY-18 20:10:00 to 27-MAY-18 21:10:00 (CST-6)
Location: PAMPA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Minor street flooding in Pampa.

Hail in HANSFORD, TEXAS
From 27-MAY-18 17:15:00 to 27-MAY-18 17:15:00 (CST-6)
Location: GRUVER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 27-MAY-18 19:00:00 to 27-MAY-18 19:00:00 (CST-6)
Location: PAMPA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Golf ball sized hail on Highway 60 southwest of Pampa.

Hail in CARSON, TEXAS
From 27-MAY-18 19:07:00 to 27-MAY-18 19:07:00 (CST-6)
Location: SKELLYTOWN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Mping report.

Hail in CARSON, TEXAS
From 27-MAY-18 19:10:00 to 27-MAY-18 19:10:00 (CST-6)
Location: SKELLYTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail between dime and nickel, with a few quarter sized.

Hail in CARSON, TEXAS
From 27-MAY-18 19:17:00 to 27-MAY-18 19:17:00 (CST-6)
Location: SKELLYTOWN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel sized hail reported.

Hail in CARSON, TEXAS
From 27-MAY-18 19:33:00 to 27-MAY-18 19:33:00 (CST-6)
Location: SKELLYTOWN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Golf ball sized hail reported.

Hail in CARSON, TEXAS
From 27-MAY-18 19:34:00 to 27-MAY-18 19:34:00 (CST-6)
Location: SKELLYTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Mping report.

Hail in CARSON, TEXAS
From 27-MAY-18 19:36:00 to 27-MAY-18 19:36:00 (CST-6)
Location: SKELLYTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Report of quarter sized hail and strong outflow winds from storm.

Hail in GRAY, TEXAS
From 27-MAY-18 19:50:00 to 27-MAY-18 19:50:00 (CST-6)
Location: KINGS MILL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Report received from the spotter network.

Hail in GRAY, TEXAS
From 27-MAY-18 20:00:00 to 27-MAY-18 20:00:00 (CST-6)
Location: PAMPA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Golf ball sized hail on highway 60 southwest of Pampa.

Hail in GRAY, TEXAS
From 27-MAY-18 20:15:00 to 27-MAY-18 20:15:00 (CST-6)
Location: PAMPA
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Facebook report with photos.

Hail in GRAY, TEXAS
From 27-MAY-18 20:17:00 to 27-MAY-18 20:17:00 (CST-6)
Location: PAMPA
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Baseball hail a few blocks north of the blowing alley.