A dryline out ahead of a cold front moving east across the central TX/OK Panhandle during the day on the 16th helped set up the environment for storm development. Eventually, it turned out to be a meso-boundary working west. In an environment where MUCAPE was 2000-3000 J/Kg with little to no CIN and 30-40 kts of effective shear, a supercell formed along the westward moving outflow boundary and produced large hail at times around baseball size. The one supercell then drifted south of Amarillo along another outflow boundary and dissipated by later in the evening.

Hail in GRAY, TEXAS
From 16-APR-17 16:24:00 to 16-APR-17 16:24:00 (CST-6)
Location: LEFORS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in GRAY, TEXAS
From 16-APR-17 16:32:00 to 16-APR-17 16:32:00 (CST-6)
Location: LEFORS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GRAY, TEXAS
From 16-APR-17 16:36:00 to 16-APR-17 16:36:00 (CST-6)
Location: LEFORS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRAY, TEXAS
From 16-APR-17 16:45:00 to 16-APR-17 16:45:00 (CST-6)
Location: LEFORS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

On Highway 273.

Hail in GRAY, TEXAS
From 16-APR-17 16:50:00 to 16-APR-17 16:50:00 (CST-6)
Location: LEFORS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 16-APR-17 16:52:00 to 16-APR-17 16:52:00 (CST-6)
Location: LEFORS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRAY, TEXAS
From 16-APR-17 16:56:00 to 16-APR-17 16:56:00 (CST-6)
Location: LEFORS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRAY, TEXAS
From 16-APR-17 17:01:00 to 16-APR-17 17:01:00 (CST-6)
Location: LEFORS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 16-APR-17 17:09:00 to 16-APR-17 17:09:00 (CST-6)
Location: PAMPA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GRAY, TEXAS
From 16-APR-17 17:10:00 to 16-APR-17 17:10:00 (CST-6)
Location: LEFORS
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 16-APR-17 18:03:00 to 16-APR-17 18:03:00 (CST-6)
Location: KINGS MILL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in GRAY, TEXAS
From 16-APR-17 18:04:00 to 16-APR-17 18:04:00 (CST-6)
Location: KINGS MILL
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRAY, TEXAS
From 16-APR-17 18:04:00 to 16-APR-17 18:04:00 (CST-6)
Location: LEFORS
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CARSON, TEXAS
From 16-APR-17 18:12:00 to 16-APR-17 18:12:00 (CST-6)
Location: GROOM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 18:32:00 to 16-APR-17 18:32:00 (CST-6)
Location: GROOM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 18:35:00 to 16-APR-17 18:35:00 (CST-6)
Location: GROOM
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 18:52:00 to 16-APR-17 18:52:00 (CST-6)
Location: GROOM
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 18:56:00 to 16-APR-17 18:56:00 (CST-6)
Location: GROOM
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CARSON, TEXAS
From 16-APR-17 18:59:00 to 16-APR-17 18:59:00 (CST-6)
Location: GROOM
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 19:06:00 to 16-APR-17 19:06:00 (CST-6)
Location: CONWAY
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 19:06:00 to 16-APR-17 19:06:00 (CST-6)
Location: CONWAY
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 19:07:00 to 16-APR-17 19:07:00 (CST-6)
Location: GROOM
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 19:07:00 to 16-APR-17 19:07:00 (CST-6)
Location: GROOM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 19:14:00 to 16-APR-17 19:14:00 (CST-6)
Location: CONWAY
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CARSON, TEXAS
From 16-APR-17 19:15:00 to 16-APR-17 19:15:00 (CST-6)
Location: GROOM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in ARMSTRONG, TEXAS
From 16-APR-17 19:28:00 to 16-APR-17 19:28:00 (CST-6)
Location: CLAUDE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in ARMSTRONG, TEXAS
From 16-APR-17 20:14:00 to 16-APR-17 20:14:00 (CST-6)
Location: GOODNIGHT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in ARMSTRONG, TEXAS
From 16-APR-17 20:20:00 to 16-APR-17 20:20:00 (CST-6)
Location: CLAUDE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser