Everyone should have a good, detailed map of their state for times like these. I like the Atlas & Gazetteer from DeLorme. You can get them on Amazon. They have been a life saver several times. I show horses and have an atlas for every state I travel to. Getting stuck on an interstate in extreme heat with a trailer load of valuable horses is not good. These Atlases are very detailed. For example, I live on a dirt road and my driveway is even on the map! I never leave home with out my atlas and my pistol.
Houston mayor on TWC (before they cut away) saying basically it's better to be stuck in traffic now than in a flood later.