superblast

plural superblasts

1. rareAn extremely intense, explosive blast.

   But consider the appalling effects of a mid-air nuclear superblast taking place a few miles above a major city (say at around 20 000 feet).

   1977, Jack Stoneley, Tunguska, Cauldron of Hell, Simon and Schuster, page 99

   2 more examples

   The Soviet chief’s East Berlin address Sunday had the sound of the classic superpower superblast that uses thousands of words to say practically nothing new.

   1974, Associated Students of Brigham Young University, The Daily Universe, Associated Students of Brigham Young, page 2

   The solid evidence he had acquired impressed the Soviet Academy of Sciences and quashed the skepticism and indifference with which many scientists had previously greeted stories of the strange superblast.

   1976, John Baxter, Thomas Atkins, The Fire Came by: The Riddle of the Great Siberian Explosion, Garden City, page 77