An upper level low pressure system progressed east southeast from the Pacific Northwest into the Central and Southern Rockies on the morning of February 20th, reinforcing a cold front slowly southeast into Southeast Oklahoma, Northeast Texas, and Southwest Arkansas during the early morning hours of February 21st. A deep southwest flow aloft was present along and behind the front across the Southern Plains and Mississippi Valley, with weak embedded disturbances in the flow helping to enhance the development of scattered to numerous showers and thunderstorms along and behind the front. A warm, moist, and weakly unstable air mass spread north ahead of the front into Northeast Texas, Southeast Oklahoma, Southwest Arkansas, and North Louisiana, with the southwest flow aloft tapping into the subtropical jet, thus transporting Pacific moisture northeast along and behind the front. Periods of moderate to at times, heavy rainfall fell along and behind the front across Southwest Arkansas during the evening hours on the 20th through much of the 21st before gradually diminishing during the late evening hours. However, additional periods of moderate to heavy rain spread across much of Southwest Arkansas on February 22nd north of the cold front, and continued through the morning hours on the 23rd. Widespread rainfall amounts of four to in excess of eight inches fell across much of Southwest Arkansas during this 3 day period, resulting in widespread flash flooding.

Flash Flood in MILLER, ARKANSAS
From 21-FEB-18 12:31:00 to 21-FEB-18 14:30:00 (CST-6)
Location: TEXARKANA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water across South State Line Road in Texarkana.

Flash Flood in LAFAYETTE, ARKANSAS
From 21-FEB-18 13:30:00 to 21-FEB-18 14:30:00 (CST-6)
Location: STATE LINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water over Highway 53.

Flash Flood in MILLER, ARKANSAS
From 21-FEB-18 13:40:00 to 21-FEB-18 14:30:00 (CST-6)
Location: MT PLEASANT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water across several roads throughout Miller County, including County Road 10, County Road 17, County Road 21, and County Road 68/Goodson Lane.

Flash Flood in HEMPSTEAD, ARKANSAS
From 21-FEB-18 13:35:00 to 21-FEB-18 14:30:00 (CST-6)
Location: TOKIO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water over several roads throughout Hempstead County.

Flash Flood in COLUMBIA, ARKANSAS
From 21-FEB-18 13:50:00 to 21-FEB-18 14:30:00 (CST-6)
Location: NEW HOPE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water over County Road 9.

Flash Flood in HEMPSTEAD, ARKANSAS
From 21-FEB-18 16:30:00 to 21-FEB-18 17:45:00 (CST-6)
Location: CENTER PT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water over County Road 5 near the Spring Hill community.

Flash Flood in MILLER, ARKANSAS
From 22-FEB-18 13:51:00 to 22-FEB-18 16:00:00 (CST-6)
Location: FOUKE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

County Road 22 closed between County Road 249 and County Road 10 due to flooding.

Flash Flood in NEVADA, ARKANSAS
From 23-FEB-18 05:00:00 to 23-FEB-18 09:30:00 (CST-6)
Location: READER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 53 north of Bluff City was closed due to flooding.

Flash Flood in NEVADA, ARKANSAS
From 21-FEB-18 16:30:00 to 21-FEB-18 17:45:00 (CST-6)
Location: DIAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water over Highway 67 at County Road 48.

Flash Flood in HOWARD, ARKANSAS
From 23-FEB-18 06:00:00 to 23-FEB-18 09:30:00 (CST-6)
Location: MINEOLA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Several roads were closed throughout Howard County due to flooding, including the bridge over the Saline River near Umpire, and near creeks in Center Point and just southwest of Nashville.

Flash Flood in HEMPSTEAD, ARKANSAS
From 21-FEB-18 16:45:00 to 21-FEB-18 17:45:00 (CST-6)
Location: ROCKY MOUND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High water over County Road 243.