It’s part of the Oklahoma City bomb.
It sure made a bang, from the video seen on Fox News!The explosion reminds of the 1917 Halifax Explosion caused by a collision between a merchant vessel and an munitions ship.The residual cloud even looks similar. That munitions ship, carrying TNT, picric acid, the highly flammable fuel benzol and guncotton, leveled a large portion of the City. Also the resulting tsunami wiped out a tribe of natives living on a nearby cove:
https://en.wikipedia.org/wiki/Halifax_Explosion
The Beirut explosion was on this order of power.