That doesn't sound like a bad idea, but I don't think there would be enough time to put something like that into a local forecast, the IntelliStar is crammed with products as it is. Sometimes there's not enough time to read everything because so much has to be showed in a certain number of seconds. If they still had a J Flavor though...
EDIT: I guess showing something like that during a Flood Watch would be the best time to show it, it shouldn't be shown on a regular basis imo.