MLB weather rules

[DG]

The electrical discharge IS lightning and lightning produces the thunder. The electrical discharge can occur from a cloud that is 40,000 feet above ground. Lightning strikes randomly and from 40,000 feet it can strike anywhere. 30 second flash to bang is no comfort. Standing next to a grounded light pole is like standing next to tree, bad place to be if lightning strikes it. Lightning is not particularly attracted to aluminum bats. It could miss all the light poles and strike the ground near a fielder and cause a death due to ground step potential.

If you can see lightning striking or hear thunder it is close enough to stop an amateur game.

MLB is whole different subject from amateur baseball from a lot of standpoints including approaching bad weather.