I read through the article and the level he came up with was 1.98 kt.
Which is pretty close to 2700 tons (2.7kT) of explosive Ammonium Nitrate................
Such an amazingly high number, at 1.98 kilotons that’s getting into the range of small nukes. Hiroshima was 15 kilotons, this is 13% of the blast energy of Hiroshima.
I think thats right. .95 conversion rate to TNT.
I suspect a lot of it was dispersed and didnt blow up.
It also looked like a strangely slow explosion.
Ive seen my share of true HE explosions, and the wave is much faster.