How do calamities work, again?

[Sylvain]

The Flood of Darkness on the Thirteenth was too much. The other shards rejoined before they were too flooded all the way.
The Flood of Light on the First would also have been too much if Minfilia hadn't interfered back during HW, so Elidibus was probably counting on Urianger getting involved and asking Minfilia for help.

I'm curious to see what the other shards were like in their floods. Was whatever shard had the Flood of Water seeing people transform into sea monsters like Leviathan's tempered followers do?

I wonder too, it'd be nice to know at some point.

So in order for a rejoining to occur, not only do you need to heavily tilt an element on a shard, but also cause a calamity at the exact same time before the shard gets entirely flooded.
Damn, that must require so insane precision.

So technically, bahamut calamity was suppose to rejoin the first right? Since both calamity happened nearly at the same time