Watch the videos. It is quite impressive in the bad way.
The first one is the best. The guy was very steady but much further away than the second video. The second video is closer to ground zero. You can see debris flying up in the air.
I was on the design team of a propane truck loading facility years ago.
A couple numbers stuck in my brain because I was amazed at how powerful a propane blast could be.
A 60,000 gallon tank half full, if ignited, should produce a ball of flame 300 feet tall and 1,000 feet around.
The code was written to first address if found, should a fire even be fought or simply run away as fast as you can. They address several items on how to address if it was past time to leave. Such as bulging in the tank or rising pitch of the emergency relief valves. The point the code made was if you were fighting the fire, you were too close if a tank ruptured.