A TNT explosion is a powerful BLAST caused by the detonation of trinitrotoluene (TNT). It is a highly explosive chemical compound used in military and industrial applications. The BLAST from a TNT explosion is so powerful that it can cause significant damage to buildings and other structures. The term 'BLAST' is often used to describe the effects of a TNT explosion, as it is capable of producing a loud noise and a shockwave that can travel long distances.