A strong upper level low pressure system settled over northern Mexico on March 8th, and became stationary through March 12th as it was cut off from the upper level jet stream, with a blocking upper ridge having developed over Florida and the western Atlantic. Meanwhile, a weak frontal boundary entered the region from the west on the 8th, and became stationary over Deep East Texas, Northwest Louisiana, and Southwest Arkansas. Upper level disturbances ejected northeast ahead of the Northern Mexico low pressure system, resulting in periods of showers and thunderstorms containing heavy rainfall to move repeatedly over these areas. The air mass was most unstable on the 8th, where several severe thunderstorms developed and produced wind damage across portions of Northwest and Northcentral Louisiana, as well as East Texas. However, widespread heavy rainfall was relentless along and ahead of the surface front over Deep East Texas, all of North Louisiana, and Southwest Arkansas where widespread flash flooding occurred. Numerous roads and bridges were flooded or washed out, homes were flooded, and many high water rescues were required as many drivers drove around barricades and into the flooded roadways. Widespread rainfall amounts of 5-10+ inches fell during the 4 day period across all of Southwest Arkansas, with amounts of 12-18+ inches across Deep East Texas and all of North Louisiana. Some of the more impressive 5-day rainfall totals were as follows: Locust Ridge RAWS: 11.05, El Dorado: 9.45, Magnolia: 9.39, Lewisville: 7.24, Fouke 5.3 ENE: 7.06, Bluff City RAWS: 6.52.

Flash Flood in UNION, ARKANSAS
From 09-MAR-16 11:00:00 to 10-MAR-16 11:45:00 (CST-6)
Location: EL DORADO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Junction City Highway near South Jackson Street was flooded and closed.

Flash Flood in COLUMBIA, ARKANSAS
From 09-MAR-16 11:03:00 to 09-MAR-16 15:00:00 (CST-6)
Location: NEW HOPE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

County Road 8 was flooded and closed.

Thunderstorm Wind in COLUMBIA, ARKANSAS
From 08-MAR-16 17:00:00 to 08-MAR-16 17:00:00 (CST-6)
Location: NOXOBE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees down across the southeast portions of Columbia County.

Flash Flood in LAFAYETTE, ARKANSAS
From 09-MAR-16 03:00:00 to 09-MAR-16 10:00:00 (CST-6)
Location: KIZER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hwy. 9 was flooded and closed west and southwest of Bradley, Arkansas.

Flash Flood in LAFAYETTE, ARKANSAS
From 09-MAR-16 04:50:00 to 09-MAR-16 10:00:00 (CST-6)
Location: GIN CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

County Road 62 east of Highway 360 is flooded and closed.

Flash Flood in LAFAYETTE, ARKANSAS
From 09-MAR-16 04:50:00 to 09-MAR-16 10:00:00 (CST-6)
Location: GIN CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 360 in the Gin City community was flooded and closed.

Flash Flood in UNION, ARKANSAS
From 08-MAR-16 21:00:00 to 10-MAR-16 11:45:00 (CST-6)
Location: EL DORADO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple roads flooded and closed in El Dorado, Arkansas.