A very unstable airmass developed ahead of a cold front which moved through Southern Arkansas during the afternoon and evening hours of May 7th.  While atmospheric wind shear was relatively weak, the extreme instability made up for the lack of shear.  Multicell and supercell thunderstorms were the end result, some of which produced large hail initially but the storms quickly transitioned into damaging wind producing thunderstorms with numerous reports of wind damage received across Southwest Arkansas.

Hail in HOWARD, ARKANSAS
From 07-MAY-12 15:45:00 to 07-MAY-12 15:45:00 (CST-6)
Location: BURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Quarter sized hail was reported in Umpire, Arkansas.

Thunderstorm Wind in HOWARD, ARKANSAS
From 07-MAY-12 15:45:00 to 07-MAY-12 15:45:00 (CST-6)
Location: BURG
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed on Hwy. 278 in Umpire, Arkansas.

Thunderstorm Wind in HOWARD, ARKANSAS
From 07-MAY-12 16:30:00 to 07-MAY-12 16:30:00 (CST-6)
Location: CENTER PT
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were downed near Center Point at the intersection of Hwy. 369 and Hwy. 26.

Thunderstorm Wind in HOWARD, ARKANSAS
From 07-MAY-12 16:45:00 to 07-MAY-12 16:45:00 (CST-6)
Location: NASHVILLE
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and powerlines were downed.

Hail in HOWARD, ARKANSAS
From 07-MAY-12 16:30:00 to 07-MAY-12 16:30:00 (CST-6)
Location: CENTER PT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Quarter sized hail was reported near Center Point at the intersection of Hwy. 369 and Hwy. 26.

Thunderstorm Wind in HEMPSTEAD, ARKANSAS
From 07-MAY-12 16:50:00 to 07-MAY-12 16:50:00 (CST-6)
Location: TOKIO
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Many loose items were destroyed.  A trampoline flew 1500 feet.  A shed was heavily damaged.

Thunderstorm Wind in HOWARD, ARKANSAS
From 07-MAY-12 17:00:00 to 07-MAY-12 17:00:00 (CST-6)
Location: MINERAL SPGS
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were downed in Mineral Springs.

Thunderstorm Wind in HOWARD, ARKANSAS
From 07-MAY-12 17:00:00 to 07-MAY-12 17:00:00 (CST-6)
Location: MINERAL SPGS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were downed along Hwy. 27 west of Mineral Springs.

Thunderstorm Wind in HEMPSTEAD, ARKANSAS
From 07-MAY-12 17:00:00 to 07-MAY-12 17:00:00 (CST-6)
Location: DOYLE
Magnitude: 55.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Powerlines were downed, trees were uprooted and a barn was damaged.

Thunderstorm Wind in LITTLE RIVER, ARKANSAS
From 07-MAY-12 17:25:00 to 07-MAY-12 17:25:00 (CST-6)
Location: OGDEN
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were reported downed near the Ogden area.  Powerlines were also downed.

Thunderstorm Wind in HEMPSTEAD, ARKANSAS
From 07-MAY-12 17:45:00 to 07-MAY-12 17:45:00 (CST-6)
Location: HOPE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and powerlines were downed in Hope and throughout the county along Hwy. 278 and Hwy. 29.

Thunderstorm Wind in LAFAYETTE, ARKANSAS
From 07-MAY-12 18:05:00 to 07-MAY-12 18:05:00 (CST-6)
Location: STAMPS
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were downed on County Road 28 in Stamps, Arkansas.

Thunderstorm Wind in LAFAYETTE, ARKANSAS
From 07-MAY-12 18:05:00 to 07-MAY-12 18:05:00 (CST-6)
Location: STAMPS
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Powerlines were downed in Stamps, Arkansas.