I heard that the first blast was the equivalent of 3 tons of TNT but the second was the equivalent of 21 Tons and the shockwave from it was recorded as a seismic event in the U.S.
You have to hope the poor people there didn't suffer. It's just horrific, even the aftermath around the area it looks like an atomic bomb has gone off with windows blown out in most if not all buildings and buildings flattened