Do you reckon they can fit all 30,000 odd folk inside the foyer?
They were asked to move inside to the inner concourse, not a foyer.
Locals are probably used to this and it probably is not a big deal. I'm sure there just have to be no lightening strikes near the ground for a period of time for play to be able to resume.
I don't even see why this is a thing, it's much different weather to England, so of course has different effects.