A long-lived discrete supercell thunderstorm developed ahead of a dryline and approaching shortwave trough during the mid to late afternoon in Parmer County. Steady northward moisture advection kept this storm and associated dryline confined to the far southwest Texas Panhandle before the upper trough pushed it farther north in the Panhandle. Large hail up to tennis ball size, wind gusts to 60 mph, and brief lowerings in the form of funnel clouds and wall clouds were reported with this storm.

Hail in PARMER, TEXAS
From 28-MAY-13 14:45:00 to 28-MAY-13 14:45:00 (CST-6)
Location: LAZBUDDIE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public estimated quarter size hail eight miles west of Lazbuddie. No damage was reported.

Hail in PARMER, TEXAS
From 28-MAY-13 15:19:00 to 28-MAY-13 15:19:00 (CST-6)
Location: HUB
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

An off-duty NWS employee estimated 1.25 inch diameter hail 12 miles south of Friona. No damage was observed.

Hail in PARMER, TEXAS
From 28-MAY-13 15:25:00 to 28-MAY-13 15:25:00 (CST-6)
Location: BOVINA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

A city official in Bovina estimated pea to quarter size hail. No damage was reported.

Thunderstorm Wind in PARMER, TEXAS
From 28-MAY-13 15:30:00 to 28-MAY-13 15:40:00 (CST-6)
Location: FRIONA BENGER ARPK
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas Mesonet site located two miles northeast of Friona measured two separate severe wind gusts. The first was 58 mph at 1530 CST and the second of 60 mph occurred at 1540 CST.

Hail in PARMER, TEXAS
From 28-MAY-13 14:37:00 to 28-MAY-13 14:37:00 (CST-6)
Location: FRIONA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An NWS COOP observer estimated a brief period of quarter size hail. No damage was reported.

Hail in PARMER, TEXAS
From 28-MAY-13 16:09:00 to 28-MAY-13 16:26:00 (CST-6)
Location: FRIONA
Magnitude: 1.75 
Property damage: 75.00K
Reported by: Emergency Manager

Multiple reports of large hail ranging from quarter size to golf ball size were received from Friona to about four miles east of Friona between 1609 and 1626 CST. Minor damage to vehicles and homes in Friona was common. The extent of damage to area crops, particularly young corn, was unknown.

Hail in PARMER, TEXAS
From 28-MAY-13 15:44:00 to 28-MAY-13 15:44:00 (CST-6)
Location: FRIONA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Volunteers from the Friona Fire Department estimated quarter size hail. No damage was reported.

Hail in PARMER, TEXAS
From 28-MAY-13 16:57:00 to 28-MAY-13 16:57:00 (CST-6)
Location: PARMERTON
Magnitude: 2.50 
Reported by: Fire Department/Rescue

After the first round of severe thunderstorms drifted northeast of Friona and dissipated, the retreating dryline ignited a more robust supercell thunderstorm near Rhea. This storm produce very large hail to tennis ball size four miles north-northwest of Rhea, reported by the local volunteer fire department. Damage from the hail was unknown. Shortly after crossing into Deaf Smith County, this supercell produced a tornado followed by more instances of very large hail.

Hail in PARMER, TEXAS
From 28-MAY-13 17:15:00 to 28-MAY-13 17:21:00 (CST-6)
Location: PARMERTON
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The Rhea fire department estimated golf ball size hail, lasting around six minutes. Damage, if any, was unknown.

Hail in PARMER, TEXAS
From 28-MAY-13 15:34:00 to 28-MAY-13 15:34:00 (CST-6)
Location: LAZBUDDIE
Magnitude: 2.21 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A storm chaser measured 2.21 inch diameter hail 12 miles north of Muleshoe. No reports of damage were received.