An active day of severe weather across the Panhandles. The main 500-300 mb synoptic pattern the morning into the afternoon of the 28th showed an upper level low pressure moving through the central Rockies with an embedded jet streak rounding the base of the upper level low pressure across portions of Arizona and New Mexico. This resulted in a large region of favorable ascent with high mid level lapse rates above 8 C/km across the northern Panhandles in the left exit region of the jet streak. A surface dryline also developed across the western Panhandles where good surface based directional shear was established along this boundary of SE winds ahead of the dryline vs. SW to westerly behind the boundary. Ahead of the dryline, 850-700 mb moisture surged northward with good 20-30 kts mean southerly wind flow to further enhance the gradient setup across the dryline. Morning sounding profiles did show some cap, but with good heating during the day, thunderstorms eventually developed along the dryline. With sufficient SBCAPE of 2000-3000 J/kg, effective shear of 30-40 kts, and good CAPE in the hail growth zone given low freezing levels, storms developed in multi cell clusters. Individual cells did have a strong updraft to produce hail sizes that maxed out around 3 in diameter; along with damaging winds gusts/reports. Thunderstorms across the northern and central half of the cluster did eventually cluster up to form line segments. With the daytime heating still in place into the early evening hours, coupled with 0-1 km SRH values around 200 m2/s2, enough low level rotation did drop 2 tornadoes across Texas County, OK with an EF-0 and EF-1 rating. Storms remained mostly cellular on the southern segment of storms where large hail and strong rotating thunderstorms continued into the late evening hours across the eastern Panhandles before the storms exiting east of the region during the overnight hours.

Funnel Cloud in OCHILTREE, TEXAS
From 28-MAY-18 21:50:00 to 28-MAY-18 21:50:00 (CST-6)
Location: FARNSWORTH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Funnel cloud one third of the way down.

Funnel Cloud in OCHILTREE, TEXAS
From 28-MAY-18 22:02:00 to 28-MAY-18 22:02:00 (CST-6)
Location: PERRYTON MUNI ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Funnel cloud reported three quarters of the way down at location.  Report relayed by Twitter.

Hail in SHERMAN, TEXAS
From 28-MAY-18 16:39:00 to 28-MAY-18 16:39:00 (CST-6)
Location: MALLETT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter size hail.

Hail in SHERMAN, TEXAS
From 28-MAY-18 16:52:00 to 28-MAY-18 16:52:00 (CST-6)
Location: MALLETT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Reported by social network.

Hail in SHERMAN, TEXAS
From 28-MAY-18 16:53:00 to 28-MAY-18 16:53:00 (CST-6)
Location: MALLETT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in HANSFORD, TEXAS
From 28-MAY-18 17:08:00 to 28-MAY-18 17:08:00 (CST-6)
Location: SPEARMAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in OCHILTREE, TEXAS
From 28-MAY-18 18:16:00 to 28-MAY-18 18:16:00 (CST-6)
Location: FARNSWORTH
Magnitude: 1.30 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in SHERMAN, TEXAS
From 28-MAY-18 18:45:00 to 28-MAY-18 18:45:00 (CST-6)
Location: LAUTZ
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Late report of quarter size hail, with time estimated from radar.

Hail in HANSFORD, TEXAS
From 28-MAY-18 19:34:00 to 28-MAY-18 19:34:00 (CST-6)
Location: GRUVER
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HANSFORD, TEXAS
From 28-MAY-18 19:40:00 to 28-MAY-18 19:40:00 (CST-6)
Location: GRUVER
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report received by Twitter.

Hail in HUTCHINSON, TEXAS
From 28-MAY-18 19:57:00 to 28-MAY-18 19:57:00 (CST-6)
Location: PRINGLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Late report of quarter size hail, with a time estimated from radar.

Hail in HUTCHINSON, TEXAS
From 28-MAY-18 20:01:00 to 28-MAY-18 20:01:00 (CST-6)
Location: PRINGLE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Late report received, and the time was estimated on radar.

Hail in HANSFORD, TEXAS
From 28-MAY-18 20:05:00 to 28-MAY-18 20:05:00 (CST-6)
Location: HITCHLAND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Reported on County Road 1261, northeast of Gruver.

Hail in HANSFORD, TEXAS
From 28-MAY-18 20:56:00 to 28-MAY-18 20:56:00 (CST-6)
Location: SPEARMAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in HANSFORD, TEXAS
From 28-MAY-18 20:56:00 to 28-MAY-18 20:56:00 (CST-6)
Location: SPEARMAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Report received by spotter network.

Hail in HANSFORD, TEXAS
From 28-MAY-18 20:57:00 to 28-MAY-18 20:57:00 (CST-6)
Location: SPEARMAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OCHILTREE, TEXAS
From 28-MAY-18 22:00:00 to 28-MAY-18 22:00:00 (CST-6)
Location: FARNSWORTH
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in LIPSCOMB, TEXAS
From 28-MAY-18 22:51:00 to 28-MAY-18 22:51:00 (CST-6)
Location: LIPSCOMB
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Late report, with time estimated from radar.

Thunderstorm Wind in LIPSCOMB, TEXAS
From 28-MAY-18 22:50:00 to 28-MAY-18 22:50:00 (CST-6)
Location: DARROUZETT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Late report with time estimated from radar.