Enigma tornado outbreak


On February 19–20, 1884, a large tornado outbreak occurred over the Southeastern United States, known as the Enigma tornado outbreak due to the uncertain number of total tornadoes and fatalities. Nonetheless, an inspection of newspaper reports and governmental studies published in the aftermath reveals successive, long-tracked tornado families striking Alabama, Georgia, Illinois, Indiana, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee and Virginia, with an estimation of at least 51—and possibly 60 or more—tornadoes striking that Tuesday into Wednesday.
The majority of reported tornado activity was seen across Alabama, Georgia, South Carolina and North Carolina, which were all struck severely by multiple waves of tornado families. In the Southeast, the outbreak began during the late morning in Mississippi, preceded by severe thunderstorms in Louisiana. Shortly thereafter, the outbreak widened and intensified, progressing from Alabama to Virginia between noon and midnight. The outbreak also produced the deadliest individual tornado in North Carolina history, an F4 which swept through the Rockingham area, killing 23.

Confirmed tornadoes

The following events were also reported:
Prior to 1990, there is a likely undercount of tornadoes, particularly E/F0–1, with reports of weaker tornadoes becoming more common as population increased. A sharp increase in the annual average E/F0–1 count by approximately 200 tornadoes was noted upon the implementation of NEXRAD Doppler weather radar in 1990–1991. 1974 marked the first year where significant tornado counts became homogenous with contemporary values, attributed to the consistent implementation of Fujita scale assessments. Numerous discrepancies on the details of tornadoes in this outbreak exist between sources. The total count of tornadoes and ratings differs from various agencies accordingly. The list below documents information from the most contemporary official sources alongside assessments from tornado historian Thomas P. Grazulis.

Polkton–Ansonville–Mangum–Pekin, North Carolina

This was the first of a number of destructive North Carolina storms. Detailed coverage in a Wadesboro-based newspaper provides an unusually precise survey of the movement and damage produced by three of those storms in the southern Piedmont of North Carolina. This storm first formed in southeastern Union County, from a supercell that had produced significant damage in South Carolina earlier. Most of the path of this storm was in rural areas, with injuries and major damage along Beaverdam Creek, south of Marshville in Union County, and along Brown Creek in Anson County, northeast of Polkton.
Significant damage also occurred in and around the towns of Polkton and Ansonville, where structures in both towns were widely damaged, with homes and farm buildings destroyed south of Ansonville. A total of four people were killed: a pair in a "'mansion'" that was destroyed, and another pair in one of 28 homes that were wrecked on a plantation. Eyewitnesses in Polkton noted that the storm "crossed the railroad about a mile east of Polkton last night prostrating everything in its course. Could see the storm from Polkton by lightning, looked like a cloud of dense smoke and sounded like thunder. Hail stones measuring long, wide and thick fell."
Homes were also destroyed near Mangum in Richmond County and near Pekin in Montgomery County.

Pioneer Mills, North Carolina

This storm was preceded and followed by a wide area of downburst damage – with scattered areas of damage to farms and small structures reported across a wide area of southern Cabarrus County, eastern Mecklenburg County and the Goose Creek area of northwestern Union County.
The first tornado-specific damage occurred in the Pioneer Mills community between Harrisburg and Midland in Cabarrus County, where a mill was destroyed and estimated F2 damage was inflicted upon several residences, including several small and a few larger homes that were wrecked. The storm passed within of Albemarle; little damage was recorded elsewhere in Stanly County. Several poorly constructed buildings were destroyed along the Uwharrie River in Montgomery County, and damage to farms was widespread in the county. One person was killed, but there may have been other deaths. Downburst damage continued to southwest of Asheboro.

Pee Dee–Rockingham–Philadelphia–Manly, North Carolina

Spawned late in the outbreak, the storm which swept from Anson to Harnett Counties in North Carolina passed through the Rockingham area, and became the deadliest tornado in recorded North Carolina history. This storm first touched down east of the town of McFarlan, in southeastern Anson County. The storm produced little damage in Anson County, but caused two deaths south of Pee Dee.
Tracking to the northeast, it crossed the Pee Dee River into Richmond County and produced sporadic damage until just southeast of Rockingham. Extreme damage to pine forests was first noted just south of town. Strengthening considerably, the storm swept through the southeast edge of Rockingham, where large homes were destroyed to their foundations, and large hardwood trees were snapped at ground level. The Philadelphia Church community was devastated, with most of the poorly constructed dwellings in the community completely destroyed. 15 or more deaths occurred there. The storm had widened to nearly in width at this point.
Forests and rural homes were flattened in and beyond Philadelphia. The storm then tracked through what is now the town of Hoffman, before entering Moore County. Severe damage was again seen in the communities of Keyser and Manly, along the southeast edge of Moore County. The storm then curved slightly to the east, dissipating into a wide area of downburst damage near the community of Johnsonville. A total of at least 23 people were killed, for many of the injured may have died later. Eyewitnesses reported large hail and intense lightning displays preceding the storm.
An unusually detailed accounting of the storm's passage through Richmond County was provided two days later: a local resident undertook an informal, but detailed survey of the damage produced by the storm, and this account was published in an Anson County newspaper. This accounting establishes a steady southwest-to-northeast movement through the county, with a number of buildings—sharecropper cabins, large homes, and a mill—swept away along the path. As the storm passed southeast of downtown Rockingham, it may have peaked in intensity; it was noted that all structures along a segment of the path were destroyed. The surveyor noted a path width of, with the most extreme damage in the Philadelphia Church community. The surveyor noted that:
Trees were taken up by the roots and hurled with fearful rapidity through the air and those not uprooted had all the bark taken off. The scene after the storm, particularly the position of the prostrate trees, indicated a convergence toward the center, as if a vacuum was created there and the wind rushed in from either side to fill it.
A second, detailed survey of the path was made 10 days later by J. A. Holmes; his findings were published in the Elisha Mitchell Scientific Society journal for 1884.

Other effects

Elsewhere, wind damage, flash floods and derecho-like effects were also reported in published accounts of the outbreak. Homes were swept away by water in Louisville, Kentucky, New Albany, Indiana, and Jeffersonville, Indiana, as well as in other towns along the Ohio River. Blizzard conditions occurred in the eastern Midwest. In Tennessee the mid-latitude system associated with the outbreak generated severe thunderstorms that produced strong, destructive winds on February 19. These winds caused "great" damage to forestland, fencing, and housing, especially in and near Clarksville.

Aftermath, recovery, and records

The total impact of the outbreak was never adequately quantified and hence has been considered enigmatic. Individual deaths may have been counted multiple times, leading to an exaggerated death toll, but on the other hand rural Black dead may have been undercounted, many of whom were undocumented sharecroppers. Of thousands reported dead, the names of fewer than 100 could be verified. According to an article appearing in the Statesville Landmark three days later, the damage tally in Georgia alone was estimated to be $1 million, in 1884 dollars. Tabulations from 1884 estimate a total of $3–4 million in tornado damage, with 10,000 structures destroyed, as many as 800 dead, and up to 2,500 injured. The same reported an estimated 60 tornadoes and called the outbreak the worst in U.S. history to date. Between 10,000 and 15,000 people were reportedly rendered homeless and even said to be "starving". The outbreak produced the largest 24-hour total of killer tornadoes until the 1974 Super Outbreak. The precise number of tornadoes as well as fatalities incurred during the outbreak is unknown, but the death toll was variously estimated to range from 370 to 2,000 at the time. A reliable survey by the Signal Corps in 1889 located 182 fatalities, and a reanalysis by tornado researcher Thomas P. Grazulis in 1993 counted 178 deaths.