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Northeast Arkansas–Missouri Bootheel–Northwest Tennessee

Main article: 2021 Tri-State tornado

Northeast Arkansas–Missouri Bootheel–Northwest Tennessee

Low-end EF4 damage to a home east of Braggadocio, Missouri.
Meteorological history
Formed	December 10, 7:07 p.m. CST (UTC−06:00)
Dissipated	December 10, 8:36 p.m. CST (UTC−06:00)
Duration	1 hour, 29 minutes
EF4 tornado
on the Enhanced Fujita scale
Highest winds	170 mph (270 km/h)
Overall effects
Fatalities	8 (+1 indirect)
Injuries	16

This violent, long-tracked, and deadly EF4 wedge tornado was the fifth of eleven spawned by the Quad-State supercell, and the first of two violent tornadoes produced by the storm. It first touched down in Craighead County, Arkansas, just north of Bay, at 7:07 p.m. CST (01:07 UTC) on the evening of December 10. After initially only causing minor EF0 tree and outbuilding damage, the tornado moved through the south side of Bowman, inflicting EF0 to EF1 damage to roofs as well as downing power poles and tree limbs, and bending a radio antenna at a residence. The tornado then intensified to EF2 strength as it crossed AR 18 and passed northwest of Lake City, downing trees and damaging or destroying some metal outbuildings. A house also sustained minor damage in this area and AR 135 north of town was shut down due to downed power lines. The growing tornado then crossed County Road 505 as it continued northeastward, snapping power poles, unroofing a house, inflicting major roof damage to another home, overturning an irrigation pivot sprinkler, and damaging a silo. The tornado then reached EF3 strength as it moved through the western and northern fringes of Monette. Two industrial buildings were destroyed at the west edge of town, and many trees and power poles were snapped. The Monette Manor nursing home lost most of its roof and had masonry exterior walls knocked down, killing one person and trapping 20 other residents and employees, including five people who were injured. Multiple homes and mobile homes were damaged or destroyed in a neighborhood near the nursing home, several large grain silos were torn apart, and AR 139 were also shut down near the town due to downed power lines.

Maintaining EF3 intensity as it crossed into northwestern Mississippi County, the tornado struck Leachville, killing a person at a local Dollar General store that was completely destroyed, heavily damaging or destroying homes, mobile homes, and a few metal-framed warehouse buildings, and tossing cars and semi-trailers. Extensive tree damage also occurred, and businesses in downtown Leachville had roofing blown off. Still at EF3 intensity, the tornado grew larger as it passed near Buckeye, and very intense tree damage was noted along West County Road 38 as an entire row of large trees were completely debarked and denuded. Power poles were snapped, and an outbuilding was also destroyed. As it crossed the state line into Dunklin County in the Missouri Bootheel, high-end EF2 damage occurred as multiple outbuildings, mobile homes, and houses were damaged or destroyed, and many power poles and trees were snapped, with some low-end debarking noted. The tornado then continued south of Hornersville and over the Hornersville Swamp Conservation Area, damaging trees and power poles with a mobile home also sustaining minor damage. Farther to the northeast, the tornado reached EF3 intensity again, twisting or collapsing multiple metal truss transmission towers. A house along the periphery of the circulation sustained minor damage, and some power poles were pushed over as well. The tornado then crossed into Pemiscot County west of Steele at high-end EF2 intensity, snapping and denuding trees, downing power poles, heavily damaging a couple of homes, and tossing a pickup truck. The tornado then passed just south of Braggadocio, damaging or destroying some barns and outbuildings, and inflicting roof damage to homes before abruptly becoming violent and reaching low-end EF4 intensity east of the town. Two homes were obliterated and swept from their foundations with the debris being scattered across fields. A young girl was killed, and her parents and two younger sisters were injured one of the homes. The large wedge tornado then weakened but remained strong as it crossed I-55 just south of Hayti at EF2 intensity, blowing multiple semi-trailer trucks off the highway into a field, injuring the drivers. A car was also thrown, fatally injuring the driver. In addition to the two fatalities, at least nine people overall were injured in the county. An indirect fatality also occurred when a vehicle struck a downed utility pole and two indirect injuries were confirmed as well.

Trees that were completely debarked and denuded near Buckeye, Arkansas.

East of Hayti, the tornado caused additional EF2 power pole damage before crossing the Mississippi River into Lake County, Tennessee. It briefly crossed a bend in the river back into Missouri before crossing into Tennessee again. The tornado then narrowly missed Wynnburg, producing EF2-EF3 damage in rural areas outside of town, where numerous large trees were snapped and denuded, some of which sustained debarking. Some metal high-tension power poles were bent to the ground as well. The tornado then reached its peak intensity for a second time southeast of Tiptonville as it struck the Cypress Point Resort on the southern shore of Reelfoot Lake. A bait and tackle shop was swept away and reduced to a bare concrete slab at low-end EF4 intensity. EF3 damage occurred nearby as multiple cottages, houses, and cabins were destroyed, a couple of two-story hotel buildings had their top floors destroyed with many first floors walls also collapsing, and a gift shop and a restaurant sustained severe damage. Three people were killed at the resort and large amounts of debris were scattered throughout the area. The tornado then crossed the southeastern part of the lake, before moving ashore again as it entered Obion County, causing high-end EF2 damage as it damaged or destroyed cabins, outbuildings, and houses along Lake Drive. A person was killed at a mobile home park when their RV was destroyed. Continuing at high-end EF2 strength, the tornado narrowed as it moved along SR 22 and directly through Samburg. Houses had roofs and exterior walls ripped off, RV campers were tossed, and mobile homes were destroyed. The city hall building, post office, a gas station, and several other buildings were damaged or destroyed as well. Northeast of town, the tornado rapidly weakened to EF1 intensity, blowing the roof off of a farm building and downing trees and tree limbs. Continuing to weaken rapidly, the tornado caused EF0 tree limb damage until it dissipated approximately 2.5 miles (4.0 km) northeast of Samburg at 8:36 p.m. CST (02:36 UTC).

The tornado was rated as a low-end EF4 with winds estimated at 170 mph (270 km/h), reaching a peak width of 1,800 yards (1,600 m) along an 81.17-mile (130.63 km) path through portions of three states, remaining on the ground for 89 minutes. Eight fatalities and one indirect fatality occurred, along with at least 16 injuries and two indirect injuries, some of which were serious. After the tornado dissipated, the parent supercell entered a cycling phase, producing three brief tornadoes, one rated EF1 and the other two rated EF0, in Obion County northeast of Samburg and west of Union City. As the storm passed to the northwest of Union City, it produced a stronger, longer-tracked tornado near Woodland Mills.