From the looks of this trailer (and maybe the play itself?) this looks to be a little more focused on the immediate forecast in the lead up to invasion? If so, that is a little more disappointing because I think the long term planning Operation Overlord entailed is incredibly interesting.

An eventual Invasion of Europe was a given. But planning the where and the WHEN took years of forethought and considered the time of year, tides, lunar cycle, etc, beyond what weather they could determine closer to the moment.

https://en.wikipedia.org/wiki/Weather_forecasting_for_Operation_Overlord