We in Canada have a waether overlay that can show any current weather, or the history over the last hour or so (in 2 shades of blue supposedly to indicate high intensity or low intensity). The feed isn't real time and it sucks. We do also have a function that displays lightning strikes. I pay that far more creedence as it is much closer to real time, and if you have a tight grouping, it's fairly accurate at indicating at least one aera the drivers don't want to go.