Long out of print, Significant Tornadoes 1680-1991 was available at last check from a third-party seller on Amazon.com for a cool $634.11. The book’s only supplement to date, covering the period ...

Last June 11 Tim Samaras and two colleagues did the near impossible—they chased down a tornado and placed a probe with video cameras directly in its path. Beginning at precisely 2:23 p.m. the ...