The largest tornado of the 1970's hit Boone and Kenton Counties in Kentucky on April 2, 1977. It was 1.7 miles wide, but because it tore mostly across open countryside it did not do heavy damage and was only rated F1. There were no fatalities.
The deadliest tornado of the 1970's was an F4 that struck Mississippi on February 21, 1971, killing 58 also making it the deadliest tornado in Mississippi history. first touched down near the Louisiana border southwest of Cary and tore a damage path 202 miles long (one of the longest ever recorded), dissipating a few miles north of the Tennessee border.
The most destructive was an F5 that Struck Lubbock, Texas on May 11, 1970. It caused $250 million in damage, which is equivalent to over $1.4 billion in todays dollars, marking it as the second most destructive tornado of all time.
Which tornado was the strongest of this decade could go to any one of the 14 F5 tornadoes that touched down, but one particular candidate of interest was the tornado which struck Xenia, Ohio on April 3, 1974. It was most certainly one of the most intense tornadoes ever recorded.
The largest tornado ever recorded, the Hallam, Nebraska tornado, struck in 2004, so about 6 years ago.
The largest tornado even recorded caused about $160 million dollars in damage, but keep in mind this wasn't the most damaging tornado or the strongest. The tornado with the strongest recorded winds caused $1 billion in damage (about $1.3 billion in today's dollars). The most damaging tornado recorded caused the equivalent of $1.7 billion in today's dollars.
It is not known for certain, but a likely candidate was the tornado that hit Seneca, Kansas on May 27, 1896. At one point the tornado was 2.2 miles wide. The largest tornado ever recorded was the El Reno, Oklahoma tornado of May 31, 2013, measured at one point to be 2.6 miles wide. This tornado was officially rated EF3 as it was over open country when it reached peak intensity and so caused relatively little damage at that point. Radar analysis, however, suggests that it may have reached EF5 intensity.
No, a haboob is not a tornado.
There is no evidence of actual tornadoes on Saturn. However, there is an 8,000 km (5,000 mile) wide polar cyclone over Saturn's south pole.
It does not appear so. Official records list one tornado near but not in Beaufort in 1973. However, in the 1970s many F0 an F1 tornadoes went without being recorded. So it is possible that a tornado occurred but was never officially documented.
Hattiesburg
No. The largest tornado ever recorded hit Hallam, Nebraska in the United States.
It would be tornado alley in St. Helena,South Carolina in the USA
The Hallam Nebraska tornado occurred on May 22, 2004.
Officially, the second largest tornado on record was the Hallam, Nebraska tornado of May 22, 2004 at 2.5 miles wide.
The largest tornado ever recorded, the Hallam, Nebraska tornado, struck in 2004, so about 6 years ago.
The largest tornado ever recorded was the Hallam, Nebraska tornado of May 22, 2004. At one point this tornado was 2.5 miles wide.
The largest tornado in Oklahoma (and in fact the largest tornado ever recorded), was the El Reno, Oklahoma tornado of May 31, 2013. It was 2.6 miles wide.
The Hallam, NE tornado was 2.5 miles wide.
The largest tornado on record for South Dakota appears to be an F3 tornado that occurred on June 20, 1968 near Alexandria. It was a mile and a half wide.
The largest tornado on record (the Hallam, Nebraska tornado of May 22, 2004) was produced by a supercell thunderstorm that most likely was associated with a cold front or dry line.