Major Hurricane Laura tracked north northwest across the Central and Northern Gulf of Mexico from the Central Carribean Sea near Cuba, making landfall in Southwest Louisiana near Cameron around 1 am on August 27th as a strong Category 4 hurricane with maximum sustained winds near 150 mph, and a minimum central pressure of 938 mb. Laura remained a hurricane as it tracked north across Southwest and West-central Louisiana, before weakening to a tropical storm as it moved northeast across North-central Louisiana and South-central Arkansas. A combination of observed and estimated wind gusts ranged from 40-65 mph across Southern Arkansas, resulting in scattered to numerous downed trees and power lines over these areas from late morning through the afternoon before weakening as the remnants of Laura moved into Central Arkansas. Widespread rainfall amounts of 2-4 inches was observed across much of Southern Arkansas with the passage of Tropical Storm Laura. Given the progressive nature of this tropical storm, no flooding was reported.
Here are the peak wind gusts at various automated stations across the affected areas of Southern Arkansas:
El Dorado (Union County), 57 mph
Hope (Hempstead County), 42 mph
Texarkana (Miller County), 41 mph
Bluff City RAWS (Nevada County), 39 mph
Felsenthal RAWS (Union County), 37 mph
During the peak of the widespread power outages shortly after Laura's center of circulation exited North Louisiana during the afternoon of the 27th, 136,000 customers were without power in Western Louisiana, East Texas, and Southwest Arkansas, with nearly 108,000 Entergy customers without power across North-central and Northeast Louisiana, as well as South-central Arkansas.
Here are the known damage across various counties affected in Southern Arkansas:
Union County: Numerous trees and power lines were downed across the county. One large tree fell onto a home on West Cook Street and on Gale Place in El Dorado. Power was out to most of the county.
Columbia County: Numerous trees and power lines down countywide.
Lafayette County: Numerous trees and power lines down countywide.
Miller County: Sporadic trees and power lines down across the county, especially across the southern sections of the county near Fouke and Doddridge.
Hempstead County: Several trees and power lines down across the county. Interstate 30 east near mile marker 26 west of Hope was completely blocked by a fallen tree.
Nevada County: Trees and power lines were down across various locations in the county.

Tropical Storm in MILLER, ARKANSAS
From 27-AUG-20 10:00:00 to 27-AUG-20 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Tropical Storm in LAFAYETTE, ARKANSAS
From 27-AUG-20 10:00:00 to 27-AUG-20 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Tropical Storm in COLUMBIA, ARKANSAS
From 27-AUG-20 09:00:00 to 27-AUG-20 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Tropical Storm in UNION, ARKANSAS
From 27-AUG-20 09:00:00 to 27-AUG-20 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Tropical Storm in NEVADA, ARKANSAS
From 27-AUG-20 10:00:00 to 27-AUG-20 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Tropical Storm in HEMPSTEAD, ARKANSAS
From 27-AUG-20 10:00:00 to 27-AUG-20 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS