1 [of air, steam, wind] ráfaga (f); [of sand, water] chorro (m) (at) full blast a toda marcha
2 (sound) [of whistle etc] toque (m); [of bomb] explosión (f) at each blast of the trumpet a cada trompetazo
5 (fun) it was a blast fue el desmadre (informal)
You should have come to the party on Saturday, it was a real blast
we got a real blast out of the party nos lo pasamos de miedo en la fiesta (informal)