EF3 tornado in Cross County, Arkansas

NWS meteorologists determined an EF-3 tornado touched down in western Cross County at 431 PM CDT on March 31 on County Road 537, just south of Highway 284. The tornado tracked to the east-northeast towards Wynne, AR where it crossed Highway 284 multiple times. EF-2 damage was observed north of Ellis Chapel and McElroy. Just east northeast of McElroy, significant EF-2 damage to the sewage treatment plant was noted where an 80-yard-long shed with a sturdy roofing structure of metal failed and became lofted. The roofing wadded up and destroyed two cinder block buildings before landing 100 yards away. The tornado strengthened to an EF-3 as it moved into the western section of Wynne, AR. The tornado then ravaged the center of Wynne, including the Wynne High School. Several one and two-family residences in Wynne were partially to completely destroyed. The tornado weakened as it moved away from Wynne and traveled to the north of Parkin, AR where EF-2 damage was observed. The tornado then crossed into Crittenden County. Peak winds in Cross County were estimated at 150 mph.

A regional tornado outbreak occurred during the late afternoon of Friday, March 31, 2023, and continued into the early morning hours of Saturday, April 1, 2023. This outbreak covered portions of the Ohio Valley, and the Middle and Lower Mississippi Valleys, including a good portion of the Mid-South and stretching into the Tennessee Valley. On Friday, March 31, a surface low was located near La Crosse, WI, with a cold front stretching south into central/southwest Missouri, western Arkansas, and eastern Texas. Surface temperatures were mainly in the 70s to approaching 80 degrees with surface dewpoints in the lower to middle 60s, yielding Surface-Based CAPE (SBCAPE) values between 1500-2000 J/kg by Friday evening. Favorable upper-level divergence produced by the right entrance region of a 140-kt jet streak at 300 mb provided ample lift to produce strong to severe thunderstorms across the region. Directional and speed shear were impressive with 70-80 knots of Effective Bulk Shear present and 0-1 km Storm Relative Helicity values between 500-600 m2/s2, all more than enough for organized thunderstorms across the area. Discrete supercells started to develop across the Lower Mississippi Valley during the afternoon hours on March 31, 2023, eventually tracking into the Mid-South by late afternoon. The first supercell that developed in the Mid-South produced an EF-3 that caused major damage in Wynne, Arkansas. Tornadic supercells continued to produce significant tornado damage across the Mid-South into the early morning hours of April 1, 2023. The hardest hit areas besides Wynne, Arkansas included Covington, Tennessee, and McNairy County, Tennessee. Overall, 14 tornadoes occurred across the Mid-South along with several reports of wind damage and measured damaging wind speeds. Eighteen people in the Mid-South lost their lives in this outbreak.