A persistent southwest flow aloft dominated the Southern Plains and Lower Mississippi Valley.  Shortwave troughs embedded in this flow influenced the Four State Region during the late morning, afternoon and evening hours of May 24th.  Daytime heating resulted in the instability needed to produce showers and thunderstorms.  Some of these storms produced strong and damaging wind gusts and tornadoes.

Tornado in HARRISON, TEXAS
From 25-MAY-15 10:46:00 to 25-MAY-15 11:00:00 (CST-6)
Location: MARSHALL ARPT
Tornado F-scale: EF1
Property damage: 300.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

National Weather Service Storm Survey Team determined that damage on the east side of Marshall Texas was consistent with that of a tornado.  An EF1 tornado touched down on the south southeast side of Marshall and traveled almost due north.  Numerous trees and powerlines were downed along the tornadoes patch and several homes had damage to them, mainly from fallen trees.

Thunderstorm Wind in MARION, TEXAS
From 24-MAY-15 11:32:00 to 24-MAY-15 11:32:00 (CST-6)
Location: ORRS
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees were downed on Hwy 3612, 3503 and 3511.

Thunderstorm Wind in HARRISON, TEXAS
From 24-MAY-15 11:00:00 to 24-MAY-15 11:17:00 (CST-6)
Location: LEIGH
Magnitude: 78.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

National Weather Service Storm Survey Team determined that damage across Northeast Harrison County was consistent with that of straight line wind damage to near 90 mph.  Numerous trees and powerlines were downed in and around the Karnack and Uncertain Texas communities.  Some of these trees fell on homes in the area as well.

Tornado in HARRISON, TEXAS
From 24-MAY-15 10:34:00 to 24-MAY-15 10:36:00 (CST-6)
Location: GILL
Tornado F-scale: EF1
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

National Weather Service Storm Survey Team determined that damage across Harrison County was consistent with that of a tornado.  An EF1 tornado touched down south of Marshall, Texas and snapped and uprooted numerous trees.  A home sustained roof damage when the wind lifted the carport portion of the roof structure.  The owner also lost a 30 by 30 foot outbuilding.  A warehouse also had some roof damage south of the residence.

Funnel Cloud in HARRISON, TEXAS
From 24-MAY-15 10:53:00 to 24-MAY-15 10:53:00 (CST-6)
Location: MARSHALL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A funnel cloud was reported on Hwy. 2625 west of Hwy. 59.

Funnel Cloud in HARRISON, TEXAS
From 24-MAY-15 10:55:00 to 24-MAY-15 10:55:00 (CST-6)
Location: MARSHALL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A funnel cloud was reported at Hwy. 80 east of Marshall, Texas.

Thunderstorm Wind in MARION, TEXAS
From 24-MAY-15 11:17:00 to 24-MAY-15 11:22:00 (CST-6)
Location: GRAY
Magnitude: 78.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

National Weather Service Storm Survey Team determined that damage across eastern Marion County was a result of straight line wind damage near 90 mph.  This is a continuation of the storm that produced damage earlier across Karnack and Uncertain, Texas.  The storm crossed Caddo Lake and again produced numerous trees and powerlines downed east of Smithland Texas.  Some structures also had trees on them.

Funnel Cloud in MORRIS, TEXAS
From 24-MAY-15 11:31:00 to 24-MAY-15 11:31:00 (CST-6)
Location: DANGERFIELD ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A funnel cloud was reported 5 miles south of Naples, Texas.