A lot of "fireworks" in that warehouse. They must have been planning a big celebration or something like that.
They are saying it was loaded up with seized high explosives from ships and containers.
They played the Twitter video below that showed a fire and then the big explosion ... the shock wave was WOWZER!
Homes as far as 10 kilometers away were damaged, according to witnesses.
One Beirut resident who was several kilometers away from the site of the blast said her windows had been shattered by the explosion.
"What I felt was that it was an earthquake," Rania Masri told CNN. "The apartment shook horizontally and all of a sudden it felt like an explosion and the windows and doors burst open. The glass just broke. So many homes were damaged or destroyed."