More commonly called the Marfa Dry Line, here is the website I use for today's current dry line location near Marfa in southwest Texas: http://weather.unisys.com/surface/sf...de&inv=0&t=cur

The Marfa Dry Line occurs year-round. It is overhead today, with cumulus just to the north of Marfa visually indicating its presence. The website also shows a fairly tight gradient. Launch the fleet!