In October 1859, the U.S. military arsenal at Harpers Ferry was the target of an assault by an armed band of abolitionists led by John Brown (1800-59).
A tornado appears as a rotating, funnel-shaped cloud that extends from a thunderstorm to the ground with whirling winds that can reach 300 miles per hour. Damage paths can be in excess of one mile wide and 50 miles long. Some tornadoes are clearly visible, while rain or nearby low-hanging clouds obscure others.t is not uncommon to see clear, sunlit skies behind a tornado. 1  Tornadoes cause an average of 70 fatalities and 1,500 injuries in the U.S. each year. 2  The strongest tornadoes have rotating winds of more than 250 mph.
The average tornado is on the ground for about 5 miles, but path lengths can vary greatly. Some tornadoes may be on the ground for only a few hundred feet while others may tra â¦ vel over 100 or even 200 miles. The longest damage path on record is 219 miles.1 person found this useful.he severity of damage caused by a torndo can vary widley, and  there is in fact a scale used to rate tornadoes based on that,  called the Enhanced Fujita scale which has si â¦ x levels ranging from  EF0 to EF5.