An active day of severe weather across central and eastern TX and OK Panhandles. An upper low analyzed near Las Vegas, NV in the morning opened as it bottoms out over srn NM in the afternoon before lifting and deepening again as it ejected over the Panhandles later that evening. Dryline slowly mixed east early afternoon on the 16th and with the more significant synoptic forcing hanging back and fairly meridional flow aloft. Mid to upper 60s dewpts were present over the eastern half of the Panhandles and with the exception of the very western edge of the deep sfc moisture, these dewpts did not mix out much through the day. Some standards parameters across the eastern Panhandles in particular included 400-600 m^2/s^2 Helicity with 3000-4000 J/kg of SBCAPE. This environment lead to numerous very large hail reports and several tornadoes, with one or two being long tracked over several miles.

Hail in CARSON, TEXAS
From 16-MAY-17 13:55:00 to 16-MAY-17 13:55:00 (CST-6)
Location: WHITE DEER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Tornado in HANSFORD, TEXAS
From 16-MAY-17 14:04:00 to 16-MAY-17 14:05:00 (CST-6)
Location: SPEARMAN
Tornado F-scale: EF0
Reported by: Law Enforcement

Brief tornado touchdown for one minute.

Hail in DONLEY, TEXAS
From 16-MAY-17 15:00:00 to 16-MAY-17 15:00:00 (CST-6)
Location: HOWARDWICK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in DONLEY, TEXAS
From 16-MAY-17 15:00:00 to 16-MAY-17 15:00:00 (CST-6)
Location: HOWARDWICK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in DONLEY, TEXAS
From 16-MAY-17 15:13:00 to 16-MAY-17 15:13:00 (CST-6)
Location: HOWARDWICK
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 16-MAY-17 15:29:00 to 16-MAY-17 15:29:00 (CST-6)
Location: MC LEAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in DONLEY, TEXAS
From 16-MAY-17 15:29:00 to 16-MAY-17 15:29:00 (CST-6)
Location: JERICHO
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DONLEY, TEXAS
From 16-MAY-17 15:30:00 to 16-MAY-17 15:30:00 (CST-6)
Location: HOWARDWICK
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 16-MAY-17 15:34:00 to 16-MAY-17 15:34:00 (CST-6)
Location: MC LEAN
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 16-MAY-17 15:36:00 to 16-MAY-17 15:36:00 (CST-6)
Location: MC LEAN
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 16-MAY-17 15:36:00 to 16-MAY-17 15:36:00 (CST-6)
Location: MC LEAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in GRAY, TEXAS
From 16-MAY-17 15:45:00 to 16-MAY-17 15:45:00 (CST-6)
Location: MC LEAN
Magnitude: 3.00 
Reported by: Storm Chaser

Hail in GRAY, TEXAS
From 16-MAY-17 15:50:00 to 16-MAY-17 15:50:00 (CST-6)
Location: MC LEAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in COLLINGSWORTH, TEXAS
From 16-MAY-17 16:09:00 to 16-MAY-17 16:09:00 (CST-6)
Location: QUAIL
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in COLLINGSWORTH, TEXAS
From 16-MAY-17 16:15:00 to 16-MAY-17 16:15:00 (CST-6)
Location: WELLINGTON
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in WHEELER, TEXAS
From 16-MAY-17 16:16:00 to 16-MAY-17 16:17:00 (CST-6)
Location: LELA
Tornado F-scale: EF1
Reported by: NWS Storm Survey

Brief tornado touched down and caused tree damage and damage to a powerline off of County Road 9 in rural Wheeler County.

Hail in COLLINGSWORTH, TEXAS
From 16-MAY-17 16:24:00 to 16-MAY-17 16:24:00 (CST-6)
Location: LUTIE
Magnitude: 2.00 
Reported by: Storm Chaser

Tornado in WHEELER, TEXAS
From 16-MAY-17 16:25:00 to 16-MAY-17 16:44:00 (CST-6)
Location: TWITTY
Tornado F-scale: EF2
Reported by: NWS Storm Survey

Multiple reports of a tornado from NWS Employee and storm chasers. This tornado touched down around 525 pm CDT 5 miles south southwest of wheeler. The tornado moved northeast and was on the ground for approximately 9.1 miles and around 19 minutes.

Hail in COLLINGSWORTH, TEXAS
From 16-MAY-17 16:26:00 to 16-MAY-17 16:26:00 (CST-6)
Location: QUAIL
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in COLLINGSWORTH, TEXAS
From 16-MAY-17 16:30:00 to 16-MAY-17 16:30:00 (CST-6)
Location: LUTIE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in WHEELER, TEXAS
From 16-MAY-17 16:34:00 to 16-MAY-17 16:34:00 (CST-6)
Location: MOBEETIE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WHEELER, TEXAS
From 16-MAY-17 16:38:00 to 16-MAY-17 16:38:00 (CST-6)
Location: WHEELER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in WHEELER, TEXAS
From 16-MAY-17 16:40:00 to 16-MAY-17 16:40:00 (CST-6)
Location: WHEELER
Magnitude: 52.00 EG
Reported by: Storm Chaser

Multiple power poles snapped, power lines down, and trees down on highway 83.

Hail in COLLINGSWORTH, TEXAS
From 16-MAY-17 16:44:00 to 16-MAY-17 16:44:00 (CST-6)
Location: LUTIE
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Tornado in COLLINGSWORTH, TEXAS
From 16-MAY-17 16:45:00 to 16-MAY-17 16:46:00 (CST-6)
Location: LUTIE
Tornado F-scale: EF0
Reported by: Storm Chaser

Tornado reported on the ground by storm chasers in the area.

Thunderstorm Wind in WHEELER, TEXAS
From 16-MAY-17 16:50:00 to 16-MAY-17 16:50:00 (CST-6)
Location: KELTON
Magnitude: 52.00 EG
Reported by: Amateur Radio

Four telephone poles broken off at ground. Three to four trees also damaged.

Tornado in COLLINGSWORTH, TEXAS
From 16-MAY-17 16:50:00 to 16-MAY-17 16:51:00 (CST-6)
Location: LUTIE
Tornado F-scale: EF0
Reported by: Storm Chaser

Tornado reported on the ground by storm chasers in the area.

Hail in WHEELER, TEXAS
From 16-MAY-17 17:09:00 to 16-MAY-17 17:09:00 (CST-6)
Location: ALLISON
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in COLLINGSWORTH, TEXAS
From 16-MAY-17 20:16:00 to 16-MAY-17 20:16:00 (CST-6)
Location: WELLINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Late report. Mostly dime to a few quarter size hail.

Tornado in DONLEY, TEXAS
From 16-MAY-17 15:39:00 to 16-MAY-17 15:50:00 (CST-6)
Location: JERICHO
Tornado F-scale: EF0
Reported by: NWS Employee

Tornado on the ground observed by NWS Employee.

Tornado in WHEELER, TEXAS
From 16-MAY-17 15:53:00 to 16-MAY-17 15:54:00 (CST-6)
Location: LELA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Tornado observed by storm chaser.