Severe thunderstorms developed over eastern Oklahoma during the early afternoon hours of the 13th as a cold front moved into the area. These storms organized into a line as they approached northwestern Arkansas and produced damaging wind gusts across the area through early evening as well as a weak tornado. Scattered storms formed over far eastern Oklahoma ahead of the line and moved across portions of northwestern Arkansas during the mid afternoon. One of these storms produced a strong tornado in Crawford County that injured four people and caused considerable damage near and around the town of Mountainburg.

Thunderstorm Wind in CRAWFORD, ARKANSAS
From 13-APR-18 15:09:00 to 13-APR-18 15:09:00 (CST-6)
Location: ALMA
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind uprooted and snapped trees.

Thunderstorm Wind in CRAWFORD, ARKANSAS
From 13-APR-18 15:03:00 to 13-APR-18 15:03:00 (CST-6)
Location: RUDY
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Strong thunderstorm wind blew down a tree and tore the tin roof off of a barn.

Thunderstorm Wind in SEBASTIAN, ARKANSAS
From 13-APR-18 16:34:00 to 13-APR-18 16:34:00 (CST-6)
Location: GREENWOOD
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down trees in town.

Thunderstorm Wind in SEBASTIAN, ARKANSAS
From 13-APR-18 16:41:00 to 13-APR-18 16:41:00 (CST-6)
Location: CENTRAL CITY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down a large tree just west of the intersection of Highways 22 and 255.

Tornado in CRAWFORD, ARKANSAS
From 13-APR-18 15:04:00 to 13-APR-18 15:19:00 (CST-6)
Location: RUDY
Tornado F-scale: EF2
Property damage: 600.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado developed north of Rudy where numerous trees were snapped and uprooted as it crossed Frog Bayou Drive. The tornado then severely damaged a home, destroyed outbuildings, and snapped or uprooted numerous trees on Stapp Lane. Outbuildings were destroyed and numerous trees were snapped or uprooted as the tornado crossed Lancaster Road and County Road 27. The tornado continued to move northeast across Highway 282 and I-49 where several cars were rolled off the highway and severe damage to trees occurred. Several mobile homes were destroyed, a permanent home was damaged, and severe tree damage occurred as the tornado moved across Overlook Trail. A well-built outbuilding was destroyed and a home was severely damaged on Locust Mountain Road. Numerous trees were also snapped and uprooted in this area. Another home was severely damaged on Dollard Road before moving into Mountainburg, where numerous homes and businesses were damaged, outbuildings were destroyed, and trees and power poles were blown down. The tornado then moved across the south and east side of Lake Fort Smith, where homes were damaged, outbuildings were destroyed, and trees and power poles were blown down. Based on this damage, maximum estimated wind in the tornado was 110 to 120 mph.

Thunderstorm Wind in SEBASTIAN, ARKANSAS
From 13-APR-18 17:19:00 to 13-APR-18 17:19:00 (CST-6)
Location: MILLTOWN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down several trees near the intersection of Highways 60 and 252.

Hail in FRANKLIN, ARKANSAS
From 13-APR-18 17:09:00 to 13-APR-18 17:09:00 (CST-6)
Location: OZARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Tornado in FRANKLIN, ARKANSAS
From 13-APR-18 16:49:00 to 13-APR-18 16:54:00 (CST-6)
Location: VESTA
Tornado F-scale: EF1
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The is the second segment of a two segment tornado. In Franklin County, this tornado damaged a mobile home, uprooted trees, and snapped large tree limbs and power poles. Based on this damage, maximum estimated wind in this segment of the tornado was 85 to 95 mph.

Thunderstorm Wind in SEBASTIAN, ARKANSAS
From 13-APR-18 16:43:00 to 13-APR-18 16:43:00 (CST-6)
Location: LAVACA
Magnitude: 65.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down trees and power lines.

Tornado in SEBASTIAN, ARKANSAS
From 13-APR-18 16:46:00 to 13-APR-18 16:49:00 (CST-6)
Location: URSULA
Tornado F-scale: EF1
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first segment of a two segment tornado. In Sebastian County, this tornado uprooted trees and blew down power poles. Based on this damage, maximum estimated wind in this segment of the tornado was 85 to 95 mph.