A vigorous upper level low over the northern High Plains during the evening hours of the 4th helped to spark thunderstorms across the Oklahoma Panhandle. Discrete thunderstorms developed along a surface trough across Colorado and northeast New Mexico. These thunderstorms moved eastward and entered the western Oklahoma Panhandle around the 6 PM CST hour. Higher instability and stronger deep layer shear provided an optimal environment for these storms to strengthen as they slowly progressed further into the Panhandle. Around 8:30 PM CST, a discrete supercell over southeast Colorado took a hard right turn to the southeast. As it moved towards the Oklahoma Panhandle, it underwent a transition from a discrete cell to a linear structure. Upon entering the central Oklahoma Panhandle, this line briefly merged with a discrete cell that was moving eastward across the southern portions of the Oklahoma Panhandle counties near the town of Guymon (Texas County). After this brief merger, both complexes continued to move across the Oklahoma Panhandle, and once again merged upon entering western Oklahoma by midnight of the 5th. At the same time these storms were exiting the Oklahoma Panhandle, another line of storms formed across the western Oklahoma Panhandle. These storms moved to the south quickly, and entered the northern Texas Panhandle shortly before 3 AM CST on the 5th.

Hail in TEXAS, OKLAHOMA
From 04-JUN-13 21:11:00 to 04-JUN-13 21:13:00 (CST-6)
Location: TEXHOMA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east across the western Oklahoma Panhandle. As this thunderstorm neared Texhoma (Texas County), a trained storm spotter one mile northeast of Texhoma (Texas County) reported quarter size hail (1.00 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Hail in TEXAS, OKLAHOMA
From 04-JUN-13 21:40:00 to 04-JUN-13 21:43:00 (CST-6)
Location: HITCHLAND
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east across the western Oklahoma Panhandle. As this thunderstorm neared Texhoma (Texas County), a trained storm spotter 12 miles south of Guymon  (Texas County) reported half dollar size hail (1.25 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Thunderstorm Wind in TEXAS, OKLAHOMA
From 04-JUN-13 21:05:00 to 04-JUN-13 21:07:00 (CST-6)
Location: HOUGH
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A line of thunderstorms developed over southeastern Colorado and moved to the southeast into the northern portion of the Oklahoma Panhandle counties. Upon entering the Panhandle the line took a left turn and began moving to the east. As the line moved near Guymon (Texas County), a trained storm spotter 15 miles north of Guymon (Texas Panhandle) reported a 65 mph thunderstorm gust. The line of thunderstorms continued moving to the east across the northern portion of the county after producing this gust.

Hail in TEXAS, OKLAHOMA
From 04-JUN-13 21:41:00 to 04-JUN-13 21:44:00 (CST-6)
Location: HOOKER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A line of thunderstorms developed over southeastern Colorado and moved to the southeast into the northern portion of the Oklahoma Panhandle counties. Upon entering the Panhandle the line took a left turn and began moving to the east. As the line moved near Hooker (Texas County), a trained storm spotter in Hooker (Texas Panhandle) reported quarter size hail (1.00 inch). The line of thunderstorms continued moving to the east across the northern portion of the county after producing this hail.

Thunderstorm Wind in BEAVER, OKLAHOMA
From 04-JUN-13 22:04:00 to 04-JUN-13 22:08:00 (CST-6)
Location: FLORIS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A line of thunderstorms developed over southeastern Colorado and moved to the southeast into the northern portion of the Oklahoma Panhandle counties. Upon entering the Panhandle the line took a left turn and began moving to the east. As the line moved near Floris (Beaver County), a member of the public 7 miles north of Floris (Beaver Panhandle) reported a 60 mph thunderstorm gust. The line of thunderstorms continued moving to the east across the northern portion of the county after producing this gust.

Hail in TEXAS, OKLAHOMA
From 04-JUN-13 21:15:00 to 04-JUN-13 21:18:00 (CST-6)
Location: GOODWELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east across the western Oklahoma Panhandle. As this thunderstorm neared Goodwell (Texas County), trained storm spotter in Goodwell (Texas County) reported quarter size hail (1.00 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Hail in CIMARRON, OKLAHOMA
From 04-JUN-13 19:35:00 to 04-JUN-13 19:38:00 (CST-6)
Location: BOISE CITY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east into the western Oklahoma Panhandle. As it moved into the Oklahoma Panhandle it intensified as a result of a more unstable environment. As this thunderstorm neared Boise City (Cimarron County), a member of the public 1 mile west-northwest of Boise City (Cimarron County) reported golf ball size hail (1.75 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Hail in CIMARRON, OKLAHOMA
From 05-JUN-13 01:55:00 to 05-JUN-13 01:58:00 (CST-6)
Location: FELT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A discrete thunderstorm developed over northeast New Mexico and moved southeastward into the western Oklahoma Panhandle. as the thunderstorm neared Boise City (Cimarron County) reported half dollar size hail (1.25 inches) 15 miles southwest of Boise City (Cimarron County). The thunderstorm that produced this hail quickly moved into the northwestern Texas Panhandle.

Hail in CIMARRON, OKLAHOMA
From 04-JUN-13 19:44:00 to 04-JUN-13 19:46:00 (CST-6)
Location: BOISE CITY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east into the western Oklahoma Panhandle. As it moved into the Oklahoma Panhandle it intensified as a result of a more unstable environment. As this thunderstorm neared Boise City (Cimarron County), a trained storm spotter 5 miles southeast of Boise City (Cimarron County) reported golf ball size hail (1.75 inches). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Hail in CIMARRON, OKLAHOMA
From 04-JUN-13 19:45:00 to 04-JUN-13 19:47:00 (CST-6)
Location: BOISE CITY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east into the western Oklahoma Panhandle. As it moved into the Oklahoma Panhandle it intensified as a result of a more unstable environment. As this thunderstorm neared Boise City (Cimarron County), a trained storm spotter 10 miles southeast of Boise City (Cimarron County) reported ping pong ball size hail (1.50 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Hail in CIMARRON, OKLAHOMA
From 04-JUN-13 19:25:00 to 04-JUN-13 19:27:00 (CST-6)
Location: BOISE CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east into the western Oklahoma Panhandle. As it moved into the Oklahoma Panhandle it intensified as a result of a more unstable environment. As this thunderstorm neared Boise City (Cimarron County), a trained storm spotter 1 mile west of Boise City (Cimarron County) reported quarter size hail (1.00 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Hail in CIMARRON, OKLAHOMA
From 04-JUN-13 19:27:00 to 04-JUN-13 19:29:00 (CST-6)
Location: BOISE CITY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east into the western Oklahoma Panhandle. As it moved into the Oklahoma Panhandle it intensified as a result of a more unstable environment. As this thunderstorm neared Boise City (Cimarron County), a trained storm spotter 1 mile west of Boise City (Cimarron County) reported ping pong ball size hail (1.50 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Thunderstorm Wind in CIMARRON, OKLAHOMA
From 04-JUN-13 20:30:00 to 04-JUN-13 20:33:00 (CST-6)
Location: GRIGGS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east into the western Oklahoma Panhandle. As it moved into the Oklahoma Panhandle it intensified as a result of a more unstable environment. As this thunderstorm neared Griggs (Cimarron County), a trained spotter 5 miles west of Griggs (Cimarron County) reported a 60 mph wind gust from this thunderstorm. After producing this gust the supercell continued moving to the east across the southern portion of the county.

Hail in CIMARRON, OKLAHOMA
From 04-JUN-13 20:25:00 to 04-JUN-13 20:28:00 (CST-6)
Location: GRIGGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east into the western Oklahoma Panhandle. As it moved into the Oklahoma Panhandle it intensified as a result of a more unstable environment. As this thunderstorm neared Griggs (Cimarron County), the Griggs Fire Department 2 miles west of Griggs (Cimarron County) reported quarter size hail (1.00 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.

Hail in TEXAS, OKLAHOMA
From 04-JUN-13 21:05:00 to 04-JUN-13 21:07:00 (CST-6)
Location: TEXHOMA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A discrete supercell thunderstorm developed over the northeastern New Mexico Plains and moved to the east across the western Oklahoma Panhandle. As this thunderstorm neared Texhoma (Texas County), a member of the public in Texhoma (Texas County) reported ping pong ball size hail (1.50 inch). After producing this hail the supercell continued moving to the east across the southern portion of the county.