An upper level trough shifted southeast across Eastern Oklahoma and much of Arkansas during the early morning hours of August 12th, which helped to ignite scattered showers and thunderstorms over these areas. A weak inverted surface trough had developed along the Red River Valley of Southeast Oklahoma and extreme Northeast Texas, with a 25-30 kt southwesterly low level jet feeding near and atop this boundary along the base of the upper trough. As a result, a complex of showers and thunderstorms developed over Southwest Arkansas during the early morning hours, which slowly shifted south-southeast into extreme Southeast Oklahoma, Northeast Texas, and eventually into Northern Louisiana. Given the high moisture content within the atmosphere, these storms produced very heavy rainfall while moving repeatedly over the same areas, which resulted in flash flooding across portions of Southwest Arkansas where widespread rainfall amounts of 3-6+ inches fell. In fact, 7.89 inches of rain fell at an automated gauge in the Ben Lomond community in Southeast Sevier County, while 7.43 inches was recorded at the Texarkana Regional Airport in Miller County, which set a daily and August monthly rainfall record. This thunderstorm complex gradually weakened during the late morning and early afternoon hours.

Flash Flood in HEMPSTEAD, ARKANSAS
From 12-AUG-20 05:00:00 to 12-AUG-20 09:30:00 (CST-6)
Location: DOYLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water covered Highway 371 in Northwest Hempstead County near the Howard County line.

Flash Flood in HOWARD, ARKANSAS
From 12-AUG-20 07:00:00 to 12-AUG-20 11:00:00 (CST-6)
Location: NASHVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

High water entered the Dollar General Store at the corner of Highway 371 and Highway 27 in Nashville.

Flash Flood in MILLER, ARKANSAS
From 12-AUG-20 07:00:00 to 12-AUG-20 14:00:00 (CST-6)
Location: TEXARKANA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Nearly 60 units from the Sterling Crest Apartments were flooded with water nearly 3 feet deep. Nearly 20 residents had to be rescued from their apartments.

Flash Flood in MILLER, ARKANSAS
From 12-AUG-20 07:13:00 to 12-AUG-20 14:00:00 (CST-6)
Location: TEXARKANA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Grand Avenue and 24th Street was flooded and closed. Timberwood Lane was also flooded and closed.

Flash Flood in LITTLE RIVER, ARKANSAS
From 12-AUG-20 08:04:00 to 12-AUG-20 14:00:00 (CST-6)
Location: JEWELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread flooding was observed throughout much of Western Little River County. Several roads were washed out.

Flash Flood in LITTLE RIVER, ARKANSAS
From 12-AUG-20 08:08:00 to 12-AUG-20 14:00:00 (CST-6)
Location: OGDEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several streets were flooded and closed in Ogden.

Flash Flood in HOWARD, ARKANSAS
From 12-AUG-20 09:20:00 to 12-AUG-20 14:00:00 (CST-6)
Location: BAKER SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread flooding was reported across much of Howard County, with multiple roads flooded and closed.

Flash Flood in LAFAYETTE, ARKANSAS
From 12-AUG-20 10:20:00 to 12-AUG-20 11:00:00 (CST-6)
Location: KRESS CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

AR 313 was flooded southeast of Lewisville.

Flash Flood in LAFAYETTE, ARKANSAS
From 12-AUG-20 10:20:00 to 12-AUG-20 11:00:00 (CST-6)
Location: OLD LEWISVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Fullermill Road and Lafayette County Road 32 was flooded.

Flash Flood in LAFAYETTE, ARKANSAS
From 12-AUG-20 10:20:00 to 12-AUG-20 11:00:00 (CST-6)
Location: CANFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

AR 360 north of Gin City was flooded.