Daytime heating combined with a moist airmass to bring storms during the late afternoon and evening hours on the 17th. Storms continued in association to a mesoscale convective vortex late on the 17th into the early morning hours of the 18th, bringing wind damage to portions of southwest Mississippi. Additional storms developed across Louisiana and west Mississippi through the night. These storms were extremely slow moving and continued to develop and move over the same areas, which resulted in significant flash flooding across portions of northeast Louisiana and west Mississippi.

Heavy Rain in WARREN, MISSISSIPPI
From 18-MAY-15 07:00:00 to 18-MAY-15 07:00:00 (CST-6)
Location: YOKENA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

An observer measured 6.28 inches of rain.

Thunderstorm Wind in NESHOBA, MISSISSIPPI
From 18-MAY-15 01:40:00 to 18-MAY-15 01:40:00 (CST-6)
Location: PHILADELPHIA
Magnitude: 60.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two commercial buildings and several convenience stores received wind damage. The convenience stores received awning damage. The first commercial building, the AT&T building, had damage to the ceilings and doors. The second commercial building, the Wells Lamont building, had one of its corner sections damaged. A tree also was blown down on County Road 505 seven miles south of town.

Thunderstorm Wind in HINDS, MISSISSIPPI
From 17-MAY-15 23:40:00 to 17-MAY-15 23:40:00 (CST-6)
Location: TERRY
Magnitude: 50.00 EG
Property damage: 9.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A couple of trees were blown down. A large oak tree was blown down across Lebanon Pinegrove Road.

Thunderstorm Wind in COPIAH, MISSISSIPPI
From 17-MAY-15 22:58:00 to 17-MAY-15 22:58:00 (CST-6)
Location: ALLEN
Magnitude: 52.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A couple of trees were blown down along Highway 547.

Thunderstorm Wind in ISSAQUENA, MISSISSIPPI
From 17-MAY-15 12:55:00 to 17-MAY-15 12:55:00 (CST-6)
Location: MAYERSVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Numerous large limbs were blown down.

Thunderstorm Wind in HINDS, MISSISSIPPI
From 17-MAY-15 14:10:00 to 17-MAY-15 14:10:00 (CST-6)
Location: BOLTON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Multiple trees were blown down and small limbs were scattered everywhere.

Thunderstorm Wind in ADAMS, MISSISSIPPI
From 17-MAY-15 19:25:00 to 17-MAY-15 19:25:00 (CST-6)
Location: JOHNSVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and powerlines were blown down in the Morgantown area.

Thunderstorm Wind in JEFFERSON, MISSISSIPPI
From 17-MAY-15 20:17:00 to 17-MAY-15 20:50:00 (CST-6)
Location: CANNONSBURG
Magnitude: 60.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A swath of damaging winds occurred across Jefferson County, which brought down trees and powerlines across the county. A roof was blown off of a bank on Main Street in Fayette.

Thunderstorm Wind in CLAIBORNE, MISSISSIPPI
From 17-MAY-15 22:50:00 to 17-MAY-15 22:50:00 (CST-6)
Location: PATTISON
Magnitude: 53.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A few trees were blown down in the southeast part of the county.

Flash Flood in WARREN, MISSISSIPPI
From 18-MAY-15 05:05:00 to 18-MAY-15 12:00:00 (CST-6)
Location: YOKENA
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread flooding occurred across the central to southern portions of the county with numerous roads flooded in the Yokena and Le Tourneau communities. Lake Blvd. was covered with water and closed near Yokena. Three to five inches of water entered a home on Quinola Lane. Highway 61, Fisher Ferry and Halls Ferry roads were flooded and one road had eroded. Highway 61 South was covered by 8 to 10 inches of water just south of Vicksburg. Two people had to be rescued from vehicles. Two homes had water inside that was waist deep. Radar estimates showed about 7 to 11 inches fell in southern Warren County. In addition, several trees were downed across the county due to heavy rain and flooding.