Here's why:

* Hydrogen Explosions: Hydrogen explosions are caused by the rapid reaction of hydrogen gas with oxygen. This is an exothermic reaction, meaning it releases heat and light.

* Combustion: The explosion is essentially a very rapid combustion process.

* Water Formation: The products of this combustion reaction are water (H₂O) and energy.

So, water is formed *as a result* of the hydrogen explosion, not during the explosion itself. The explosion is the rapid process of hydrogen reacting with oxygen, and water is one of the products of that reaction.