During the afternoon, evening, & night hours of Wednesday, March 28, 1984, a deadly and damaging tornado outbreak moved through Georgia and the Carolinas, producing strong downbursts and 24 confirmed tornadoes, of which several were intense–violent. One supercell, moving near the center of a low-pressure area, tracked from eastern Alabama to the North Carolina coastline before heading offshore, producing 13 of the outbreak's 24 tornadoes and becoming responsible for 49 of 57 tornadic fatalities. Individual storms & tornadoes, the majority of which were nocturnal, moved at speeds of up to , with some of the latter reaching widths near or exceeding ; a tornado that crossed into North Carolina from South Carolina (#11 on map) reached a maximum width of at one point. Preceding the outbreak, the National Severe Storms Forecast Center, now the Storm Prediction Center, issued a high risk that covered much of the Carolinas; such an issuance would not be seen again in the region until April 16, 2011. March 28, 1984 remained the deadliest high-risk day prior to April 27, 2011, where 271 people died in one day. This was the worst tornado outbreak to affect the Carolinas since the 1884 Enigma tornado outbreak just over a century earlier, and remained unrivaled until April 16, 2011, when 30 confirmed tornadoes struck North Carolina alone. The significant path length of the most notable tornado family, which tracked for at least ~ prompted comparisons to the 1925 Tri-State tornado, which had a path length of up to ~.

Tornadoes first touched down shortly after ~3:00 p.m. EST (UTC–05:00) in Georgia, continuing into South Carolina throughout the evening. Two more tornadoes struck Laurens County, injuring dozens, and another near Monroe, North Carolina, before a series of tornadoes struck Newberry, Monticello, and Winnsboro, South Carolina respectively, causing seven fatalities altogether and severe damage. After a downtrend in activity, during which tornadoes struck near Kershaw and in the Carolina Sandhills National Wildlife Refuge, three consecutive F4 tornadoes touched down near Cash, Bennettsville, and McColl, South Carolina near nightfall. The latter killed seven, all in South Carolina, and the third killed two in McColl before continuing into North Carolina, where it struck Maxton and Red Springs, killing three. Another series of tornadoes, on the ground almost always synonymously with each other at some point, struck Salemburg, Mt Olive, La Grange, and the Greenville suburbs respectively, killing a combined 31 people, 16 of which were from one tornado. Another supercell to the northeast first produced a tornado near Lewiston Woodville, killing six, then produced two tornadoes near Ahoskie and Harrellsville before producing another tornado that killed two people near Carter. A tornado struck near Loris in South Carolina before continuing into North Carolina and passing near Tabor City, after which the final tornado of the event formed over the Albemarle Sound at ~11:20 p.m. EST and struck Snug Harbor, killing one.

Meteorological synopsis

Progression through March 27 On the evening of March 27, upper-air plots identified a broad and powerful upper-level trough exiting the southern Rocky Mountains into the Great Plains. Winds in the upper reaches of the troposphere accelerated upwards of across Texas and Mississippi. In the mid-levels of the atmosphere, the trough detached into a cut-off low, while a potent shortwave trough rounded the base of this feature into the Gulf Coast of the United States. Winds at this level increased to , and notably, became increasingly diffluent across the Southeastern United States. Prior to the main event on March 28, several weak tornadoes, rated F0 to F1, occurred in Texas, Louisiana, Alabama, and Georgia.

March 28 Early on March 28, a surface area of low pressure developed over eastern Texas and reached a minimum barometric pressure of as it pushed into western Tennessee later that day. Winds in the lower levels of the atmosphere intensified to and likewise increased at the surface, contributing to significant warm air advection to the south of a warm front draped across the Appalachian Mountains in North Carolina. By 15:00 UTC, surface dewpoints had surged in excess of across Georgia and South Carolina, at which time forecasters at the National Weather Service Severe Local Storms Unit (SLSU) – equivalent to the modern-day Storm Prediction Center – outlined a moderate risk of severe weather from southwestern Georgia northeastward into southern Maryland. Within three hours, these moist dewpoints surged well into eastern North Carolina as the surface low pushed into southern Kentucky.

To the south of the original area of low pressure, a distinct mesoscale low-pressure center developed along the warm front across northern Alabama at around 18:00 UTC, and within three hours, it had rapidly deepened to a barometric pressure of . This system moved rapidly northeast at speeds up to , thus crossing into eastern North Carolina during the evening hours. As it did so, low-level winds across the eastern Carolinas originated from a southerly direction instead of a southwesterly direction; this shift in flow created a strongly sheared environment across the region. Meanwhile, afternoon temperatures climbed above , contributing to significant destabilization. Convective available potential energy values rose between 2,000 and 3,000 J/kg into North Carolina, with locally higher values observed in northeastern South Carolina.

These environmental conditions bore strong resemblance to the idealized tornado setup across the Carolinas, and they prompted the SLSU to upgrade areas from eastern Alabama into the Outer Banks of North Carolina to a high risk of severe weather, the first occurrence on record in this portion of the United States. As the meso-low moved across the Carolinas, it was supported by a surface trough to its east-northeast which likely formed as a result of differential heating. Strong low-level convergence associated with this feature led to vigorous thunderstorm development in close proximity to the low, where low-level helicity was maximized and highly supportive of supercell thunderstorms. Supercells first began producing tornadoes across Upstate South Carolina around 19:15 UTC and continued to do so as they moved northeast, passing between Columbia and Charlotte around 22:00 UTC, near Fayetteville around 00:00 UTC on March 29, and finally ending north of the Albemarle Sound in northeastern North Carolina around 02:00 UTC. One supercell moving near the center of a low pressure system produced the brunt of the tornadoes that day, of which seven were rated F4 and three F3. In total, 24 tornadoes were confirmed, with 11 each in the Carolinas and 2 in Georgia. The size and scope of the event drew parallels to the 1884 Enigma tornado outbreak and, later, the tornado outbreak of April 16, 2011. March 28, 1984 held the record for number of tornadoes in the Carolinas until the latter event, where 39 tornadoes struck the Carolinas, of which 31 struck North Carolina alone. To date, it holds the record for the most violent tornadoes seen in the Carolinas on a single day. Comparisons were also drawn to the 1925 Tri-State tornado outbreak given the progression of an intense collection of tornadoes located near the meso-low, and the significant track length of an extensive tornado family from South Carolina to North Carolina.

Confirmed tornadoes

A preliminary reanalysis by meteorologist Jonathan D. Finch in 2009 uncovered many unconfirmed and/or possible tornadoes, including the following:

Georgia A wind event/possible tornado struck Lithonia in eastern DeKalb County at 3:13 p.m. EST (20:13 UTC), significantly damaging the roof of a business, while also causing roof damage to a nearby apartment. A piece of roofing fell onto an automobile, badly damaging the latter. A tornado was sighted near Highway 211 north of Statham in Barrow County around 3:30 p.m. (20:30 UTC), but without damage. A tornado formed on Nowhere Road near Sanford in Madison County around 3:45 p.m. EST (20:45 UTC) and passed north of Colbert and Comer, causing a notable swath of tree and structural damage along a path long. 35 homes sustained moderate–severe damage, and 50 more sustained minor damage. Several trailers were destroyed, and six others were blown from their foundations. Six chicken coops were also destroyed, along with five utility buildings and barns. Over two dozen others incurred minor damage. Trees were felled and thrown across roads, striking buildings. A likely tornado hit Point Peter in Oglethorpe County around 3:57 p.m. (20:57 UTC), collapsing a brick building. An apparent tornado occurred south of Elberton in Elbert County, where fallen trees hit a home and automobile.

South Carolina

A tornado struck north of West View in Abbeville County, flipping a truck & attached trailer and crushing several mobile homes, causing several injuries. An apparent tornado struck near Due West in Abbeville County. A tornado was sighted along SC 151 between Jefferson and McBee in Chesterfield County, although damage information was not available.

North Carolina

A wind event/possible tornado struck Waldos Beach southwest of Hope Mills, where two mobile homes were severely damaged and another was split in half. A woman frantically called in a tornado report from the Lake Wendell area. A tornado struck the Farm Life area south of Williamston, flattening several storage buildings and felling multiple pine & hardwood trees. One tree was driven several feet into the ground. A tornado struck in the Reynoldson area of Gates County, destroying a barn west of US 13.

Virginia

A tornado struck Neck Road in extreme southern Chesapeake, destroying a barn, damaging a house, and felling several trees.