Chief Meteorologist Chris Franklin: Models still develop a low in the western Gulf, then move it eastward along the coast. If so, this non-tropical low could keep rain chances on the higher side from Tuesday through Thursday. A GREAT deal of uncertainty with the development and then track of such a system, as the only model consistency is the development of the low, the strength and trajectory remain uncertain. And this plays a huge role is just how much rain accumulation and coverage we will see.