- Source: 1974 Guin tornado
In the evening hours of April 3, 1974, a powerful and fast tornado would move across northeast portions of Alabama, hitting several towns along a 79.5 miles (127.9 km) path and devastating the town of Guin. The tornado would receive a rating of F5 on the Fujita scale, and was one of seven tornadoes to obtain that rating as part of the 1974 Super Outbreak. The tornado is widely believed to be one of the most violent in recorded history, and had the fastest forward speed ever recorded in a tornado, at 75 miles per hour (121 km/h). A lot of structures in the tornado were swept away, and some reportedly had their "foundations dislodged, and in some cases swept away as well."
The tornado first touched down in eastern Mississippi before crossing state lines into Alabama. It would move to the northeast while retaining a low intensity, but would rapidly intensify as it neared the town of Guin. The tornado would obliterate many brick buildings in Guin and would kill twenty-three residents before exiting the town, which was left in ruins. The tornado would produce extreme damage as it moved over forests and other rural areas; this damage was visible from satellite imagery that was conducted after the outbreak. The tornado would dissipate over an hour and a half after touching down while reaching a maximum width of 1,350 yards (1,230 m).
The tornado was so powerful that Ted Fujita considered assigning the tornado an F6 rating; the tornado was eventually rated by Fujita as "F5+".
Meteorological synopsis
Earlier on April 3, three bands of convection would develop, the third developing at about 16:00 UTC and extended from near St. Louis into west-central Illinois. Based upon real-time satellite imagery and model data, differential positive vorticity advection coincided with the left exit region of an upper-level jet streak which reached wind speeds of up to 130 kn (150 mph) (66.9 m/s (241 km/h)), thereby enhancing thunderstorm growth. Storms grew rapidly in height and extent, producing baseball-sized hail by 17:20 UTC in Illinois and, shortly thereafter, in St. Louis, Missouri, which reported a very severe thunderstorm early in the afternoon that, while not producing a tornado, was the costliest storm to hit the city up to that time. By 19:50 UTC, supercells producing F3 tornadoes hit the Decatur and Normal areas in Illinois. As thunderstorms moved into the warmer, moister air mass over eastern Illinois and Indiana, they produced longer-lived tornadoes—one of which began near Otterbein and ended near Valentine in Indiana, a distance of 121 miles (195 km).
Meanwhile, by 00:00 UTC the southern half of the first convective band became indistinguishable from new convection that had formed farther south over Alabama and Tennessee in connection with convective band two. In this area, increasing west-southwesterly wind shear at all levels of the troposphere, juxtaposed over near-parallel outflow boundaries, allowed successive supercells, all producing strong, long-tracked tornadoes, to develop unconstrained by their outflow in a broad region from eastern Mississippi to southern Tennessee. These storms, forming after 23:00 UTC, produced some of the most powerful tornadoes of the outbreak, including a large and long-tracked F4 that struck the western and central portions of Alabama, tracking for just over 110 miles (180 km), two F5s that both slammed into Tanner, causing extensive fatalities, and at around the same time the Guin tornado would first touch down.
Tornado summary
Although the exact time that the tornado touched down is unknown, it is estimated to have been at approximately 8:25 pm CDT near Caledonia, Mississippi. Ted Fujita would later make a track map of the tornado, which showed its damage path start in this area, although other maps dispute this. The tornado would produce minimal damage and retain F0 intensity as it moved to the northeast through Lamar County, before intensifying as it hit the Lamar County Airport, lofting planes in the air and damaging a grocery store that was located nearby. A short time later and after further strengthening, the tornado would impact several homes located in the Beaverton area, destroying five and producing a damage path that would later be visible on satellite imagery.
The tornado would then cross into Marion County, tracking directly at the city of Guin while retaining a speed of 45 miles per hour (72 km/h). As the tornado entered the city, it destroyed the White Rock Church of Christ and damaged several other homes located nearby. The Monterey Mobile Homes Plant, located a short distance to the northeast, would be hit moments later and was obliterated. 85 workers were employed at the plant at the time of the tornado; it is unknown how many were injured at the location. Don Drury, who managed the plant, wrote in The Marion County Journal after the tornado:
"It was unbelievable. The damage was so sudden and so complete, it left us all with a hollow feeling."The town's downtown area would then be heavily damaged, with many brick businesses and two churches completely destroyed. Trees in town were debarked, ground scouring occurred, and vehicles were thrown and mangled as well. Residential areas in Guin suffered total devastation, with many homes swept completely away and scattered across fields. According to NWS damage surveyor Bill Herman, the damage in one 6-block area was particularly extreme, and remarked that "It was just like the ground had been swept clean. It was just as much of a total wipeout as you can have." Surveyor J.B. Elliot noted that the destruction was so complete, that even some of the foundations were "dislodged, and in some cases swept away."At around this time, the tornado would reach its maximum width, at 1,350 yards (1,230 m) while enveloping much of Guin. A total of 23 people were killed in the town, which was left in ruins.
The tornado continued past Guin and struck the small community of Twin, destroying numerous homes, mobile homes, and businesses at that location, though the damage was less intense than that observed in Guin. Crossing into Winston County, the tornado struck the small community of Delmar, destroying additional homes and killing 5 people. Mobile homes in Delmar were obliterated, with their frames wrapped around trees. Past Delmar, the tornado grew up to a mile wide as it tore through the William B. Bankhead National Forest, flattening a huge swath of trees. Surveyors noted that timber damage was equally severe at all elevations in this area, with numerous trees snapped both along exposed ridges and in deep gorges. So many trees were snapped in this area that the tornado path was visible from satellite. The tornado finally dissipated south of Basham after destroying 546 structures.
The fast-moving nighttime tornado that devastated the town of Guin, was the longest-duration F5 tornado recorded in the outbreak, and considered to be one of the most violent ever recorded, possibly the most violent. The Guin Tornado traveled over 79.5 miles (127.9 km), from the town of Vernon, Alabama, to just south of the small town of Basham, before lifting just after 10:30 pm CDT.
Aftermath
= Fatalities
=See also
1974 Xenia tornado, another F5 tornado that would hit Ohio on the same day
2011 Hackleburg–Phil Campbell tornado, another EF5 tornado that would hit similar areas over 30 years later
Tornado records
Notes and references
= Notes
== References
== Sources
=Narramore, Jen; Tucker, Nelson (March 25, 2024). "Guin, AL F5 tornado - April 3, 1974". TornadoTalk. Retrieved November 26, 2024.