An outflow boundary from showers and thunderstorms that developed over Southwest Oklahoma during the evening and overnight hours on April 10th became stationary over Northern McCurtain County Oklahoma into the adjacent sections of Western Arkansas during the early morning hours of April 11th. This boundary focused scattered shower and thunderstorm development through the morning of the 11th, with large scale forcing enhanced especially during the afternoon and evening hours as a weak upper level trough traversed the Red River Valley of Southern Oklahoma/North Texas into Southwest Arkansas. Afternoon heating and cooling temperatures aloft ahead of this disturbance contributed to moderate instability developing especially over Southeast Oklahoma, Northeast Texas, and portions of Southwest Arkansas, contributing to the development of several severe thunderstorms over these areas. Damaging winds were the primary severe weather mode over Southwest Arkansas, with numerous trees and power lines downed especially across the south side of Texarkana Texas and Arkansas, as well as adjacent Lafayette and Columbia counties. As the storms moved into a slightly more stable air mass across Northcentral Louisiana, they began to slow their southward motion such that heavy rainfall repeatedly moving over the same areas resulted in areas of flash flooding generally along and north of the Interstate 20 corridor.

Flash Flood in OUACHITA, LOUISIANA
From 11-APR-16 20:29:00 to 11-APR-16 23:45:00 (CST-6)
Location: DREW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous roads were flooded throughout Monroe and West Monroe. High water was encroaching on homes that were flooded a month earlier in March.

Flash Flood in OUACHITA, LOUISIANA
From 11-APR-16 20:57:00 to 11-APR-16 23:45:00 (CST-6)
Location: HIGHLAND PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The flood gates are open in the Treasure Island area of Monroe, which resulted in homes flooding for the second time since March. In addition, one pump station on Marquette Street in Monroe also failed resulting in flooding of homes in that area.

Thunderstorm Wind in UNION, LOUISIANA
From 11-APR-16 15:30:00 to 11-APR-16 15:30:00 (CST-6)
Location: ROCKY BRANCH
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Trees snapped and uprooted southeast of Farmerville.

Flash Flood in UNION, LOUISIANA
From 11-APR-16 18:58:00 to 11-APR-16 23:30:00 (CST-6)
Location: COOLEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous parish roads were flooded.

Flash Flood in CADDO, LOUISIANA
From 11-APR-16 19:00:00 to 11-APR-16 21:15:00 (CST-6)
Location: LORRAINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

High water covering the roads in Greenwood.

Flash Flood in OUACHITA, LOUISIANA
From 11-APR-16 19:03:00 to 11-APR-16 23:45:00 (CST-6)
Location: EUREKA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous parish roads were flooded and closed throughout Ouachita Parish.

Flash Flood in BIENVILLE, LOUISIANA
From 11-APR-16 18:59:00 to 11-APR-16 21:15:00 (CST-6)
Location: LAWHON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous parish roads were flooded and closed throughout Bienville Parish.