At least once a year I go on a drive 800km drive during a period when the weather could be questionable, I generally look at the weather in major points along my route several days in advance to determine if we need to leave early or perhaps late to avoid weather. This year we left a couple of hours before a major storm, but managed to stay ahead of it.

I would like to see a planning mode where I could potentially input my planned destination into Waze a couple of weeks before my planned trip, along with my earliest possible departure, ideal and latest departure. Then Waze could alert me to potential storms impacting my route and maybe suggest leaving earlier or later depending on weather.